| Вид документа | Інструкція |
|---|---|
| Виробник | JCI |
| Моделі | YLCS-SA/HA/AA, YAES-SA 2 System, YAES-SA 3 System, YAES-DSA 4 System |
| Група обладнання | automation |
| Мова документа | англійська |
| Розмір файлу | 0.8 МБ |
Про документ
Operation instruction for the YORK Microprocessor Based Control System (MBCS) fitted to a range of YORK screw liquid chillers. The system provides multi-circuit control to maintain chilled liquid temperature, with heatpump operation available on YLCS HA units. It covers panel hardware, keypad programming of setpoints and cutouts, safeties, controls, I.S.N network messages, technical data tables and optional accessories.
Ключові дані
| Refrigerant | R134a |
|---|---|
| Display | 40 character LCD (2 x 20), update ~2 s (system 3/4 ~10 s) |
| Software version YLCS-SA/HA/AA | B.A05.01.01 and higher |
| Software version YAES-DSA 4 System main | B.A06.14.07 and higher |
| Motor current electronic overload trip | <5% or >115% FLA; >105% FLA for 30 sec |
| Oil pressure cutout | <2.5 BAR G differential for 90 sec |
| Anti-recycle timer | min start-to-start 10 min, stop-to-start 5 min (2 min after power failure) |
| Manual doc no. | 035L02631-100 Rev. 3 (11/05) GB |
Застосування
- Multi-circuit chilled liquid temperature control on YORK screw liquid chillers (YLCS SA/AA, YAES SA/3/4-system air cooled units)
- Heatpump operation maintaining hot liquid temperature on YLCS HA units
- Glycol cooling applications with programmable leaving water cutout and heater mat
- Integration with York I.S.N network (remote shutdown, demand limit, setpoint, lead system)
- Customer EMS interfacing via 0-10 Vdc, 4-20 mA dc or discrete contact closure setpoint reset
Особливості
- 40 character backlit display (2 lines of 20 characters) with intensified viewing in direct sunlight
- Real Time Clock with 10-year lithium battery back-up retaining programmed values during power failure
- Rate Control / Rate Sensitivity anticipation to limit pulldown demand and prevent overshoot
- Lockout, manual reset (3 faults in 90 minutes) and automatic reset safety categories
- Anticipation safeties (motor current unloading, discharge pressure unloading) avoid total loss of cooling
- Discharge pressure step 1 skip routine above 15.5 BAR
- Daily start/stop and holiday scheduling with manual override (30 min)
- Remote printout of live data and last 3 safety shutdowns; optional local printer kit (362L11330-002 UK / -003 EUROPE)
- Optional York EMS micro interface card converting customer signals into 1–21 second PWM reset up to 22 °C
- Slave control panel on YAES 3 & 4 system units linked by RS485 communication
Технічні дані
| Parameter | Value |
|---|---|
| Refrigerant | R134a |
| Display | 40 character liquid crystal, 2 lines of 20 characters |
| Display update rate | ~2 seconds (systems 1 & 2); ~10 seconds (systems 3 & 4) |
| Software YLCS-SA/HA/AA | B.A05.01.01 and higher |
| Software YAES-SA 2 System | B.A05.01.01 and higher |
| Software YAES-SA 3 System main/slave | Main B.A06.12.01 / Slave B.A05.13.01 and higher |
| Software YAES-DSA 4 System main/slave | Main B.A06.14.07 / Slave B.A05.15.07 and higher |
| Chilled liquid temp display limits | min -20.6°C, max 61.0°C |
| Ambient temp display limits | min -18.4°C, max 56.2°C |
| Leaving water temp sensor check range | -20 to +60 °C |
| LWT setpoint range (water cooling) | 3.5 to 21.1 °C |
| LWT setpoint range (glycol cooling) | -12.2 to 21.1 °C |
| Leaving Water Temp Cutout (water) | 2.2 °C fixed |
| Leaving Water Temp Cutout (glycol) | -13.3 to 2.2 °C programmable |
| Suction Pressure Cutout range | 0.28 to 2.5 BAR G |
| Ambient Temp Low Cutout | factory -18 °C, range -18 °C to +10 °C |
| Ambient Temp High Cutout | 46 °C standard |
| Discharge cutout YLCS (micro/mech) | 18.0 BAR SA / 22.0 BAR AA-HA micro; mech 18.9 BAR SA / 24.8 BAR AA-HA (second 19.3 BAR SA) |
| Discharge cutout YAES (micro/mech) | 20.8 BAR micro; mechanical standard 24.0 BAR, Dutch 24.0 / 25.0 BAR |
| Discharge Pressure Unload | 16.5 BAR SA / 20.0 BAR AA-HA (YLCS); 19.8 BAR (YAES) |
| Motor Current Unload | factory 101% FLA, range 85 % to 101 % |
| Electronic overload thresholds | <5% or >115% FLA shutdown; >105% for 30 sec shutdown (EN 60947-4-1 class 10A) |
| Oil pressure cutout | <2.5 BAR G differential for 90 sec |
| High oil temperature | shutdown >100 °C (start inhibit), running >95 °C after 120 s |
| High discharge temperature | shutdown >105 °C, restart below 80 °C |
| Motor protector module trip/reset | trip 110 °C (4.5 kΩ), reset 75 °C (2.75 kΩ) |
| Rate Control Temp | factory 5.0 °C, range 0.1 to 11.1 °C |
| Rate Sensitivity | factory 2.0 °C/min, range 0.3 to 8.0 °C/min |
| Local Control Range (YAES 4) | 0.6 °C – 4.4 °C |
| Fan Control Dsch Pressure Setpoint | factory 10.0 BAR, range 5–14 BAR (programmable) |
| Fan On/Off Press Diff | factory 3.5 BAR, range 2–10.4 BAR |
| Fan stage spacing (single speed) | +1.38, +2.41, +3.1, +3.79 BAR per stage |
| Two-speed fan stage 4 (fast) | ON DP > FPSP + 4.14 BAR |
| Anti-recycle timer | min start-to-start 10 min; stop-to-start 5 min; resets to 2 min after power failure |
| Anti-coincidence timer | minimum 1 minute between compressor starts |
| Load timer / Unload timer | normal 150 s (100 s YAES 4); down to 25 s (17 s YAES 4) in rate-control range |
| Pumpdown | suction falls to suction cutout or pumpdown time exceeds 10 s |
| Heatpump HLTSP range | 30 to 65 °C, control range 0.5 to 5 °C |
| LLTH sensor valid range | -12.7 °C to 68.4 °C |
| Voltage free contacts rating | 125 VA (York contacts); customer inputs 30 Vdc, gold contacts recommended |
| Chilled liquid pump contact terminals | 33 & 34 |
| Run contact terminals | 35 & 36 |
| Alarm contacts | Sys 1: 32/31 close, 32/30 open; Sys 2: 39/38 close, 39/37 open |
| Remote emergency stop device | connected to terminals 3 and 4 |
| Printer interface | RS232, 1200 baud, 8 data bits, no parity; max cable 7.5 m |
| Battery back-up | 10-year lithium RTC chip (U13); ~10 yr clock off, ~5 yr clock on |
| History buffers | 3 safety shutdown buffers |
Варіанти замовлення
- Local printer kit: 362L11330-002 (UK), 362L11330-003 (EUROPE)
- Printer paper spare roll: 025L01992-000; spare ink ribbon: 025L01993-000
- Optional accessories: York EMS Micro Interface Card (J18), micro gateway, discrete contact closure, 0-10 Vdc EMS signal, 4-20 mA dc EMS signal
Допуски та стандарти
- EN 418 (emergency stop reset requirements)
- EN 60204-1 (emergency stop / supply disconnect marking; customer wiring recommendation)
- EN 60947-4-1 class 10A time-delay overload relays (electronic motor current protection, incl. phase loss sensitivity)
Текст документа
MICRO BASED CONTROL SYSTEM
YLCS-SA/HA/AA
YAES-SA 2 System
YAES-SA 3 System
YAES-DSA 4 System
OPERATION INSTRUCTION
YLCS-SA/HA/AA: R134a - Software Version B.A05.01.01 and higher version levels
YAES-SA 2 System: R134a - Software Version B.A05.01.01 and higher version levels
YAES-SA 3 System: R134a - Main Software Version B.A06.12.01 and higher version levels
R134a - Slave Software Version B.A05.13.01 and higher version levels
YAES-DSA 4 System: R134a - Main Software Version B.A06.14.07 and higher version levels
R134a - Slave Software Version B.A05.15.07 and higher version levels
035L02631-100 Rev. 3
(11/05) GB
This manual contains a description of the operation of the Microprocessor Control System for a
range of York Chillers.
All work must be carried out in accordance with this manual and the relevant Installation,
Commissioning, Operation and Maintenance Documents for the specific Chiller.
This manual is essential as it contains information on Safety issues that relate to the product.
035L02631-100 Rev. 3 i
Table of Contents
1 LOGIC SECTION 5 PROGRAM KEY
1.1 Introduction 1 5.1 General 13
1.2 Microprocessor Board 1 5.2 Leaving Water Temperature Setpoint 13
1.3 Power Supply Board 1 5.3 Local Control Range 13
1.4 Relay Output Board 1 5.4 Selected Refrigerant 13
1.5 Current Transformer (-TC) 2 5.5 Discharge Cutout 14
1.6 40 Character Display 2 5.6 Ambient Temp Low Cutout 14
1.7 Emergency Stop Device 2 5.7 Ambient Temp High Cutout 14
1.8 Unit 1/0 (Auto/Off) Switch 2 5.8 Discharge Pressure Unload 14
1.9 System Switches 3 5.9 Rate Control Temp 14
1.10 Keypad 3 5.10 Leaving Water Temp Cutout 14
1.11 Battery Back-up 3 5.11 Suction Pressure Cutout 15
5.12 Rate Sensitivity 15
2 DISPLAY KEYS
5.13 Fan Discharge Pressure 16
2.1 General 5
5.14 Fan On/Off Fan Differential 16
2.2 Chilled Liquid Temps 5
5.15 Fan Speed Control 16
2.3 Ambient Temp 5
5.16 Number of Fans 16
2.4 System 1 Pressures 5
5.17 Motor Current / % FLA 16
2.5 System 2 Pressures 6
5.18 Leaving Water Temperature
2.6 Compressor Temperatures 6 Target Percent 16
2.7 Motor Current 6 5.19 Heater Mat On Glycol 16
2.8 Operating Hours 5.20 Manual/Auto Restart 16
Start Counter 6
2.9 Options 6 6 CLOCK KEYS
6.1 General 18
3 STATUS KEY
6.2 Programming The Day, Time, and the
3.1 General 8 Date Set Time 18
3.2 General Status Message 8 6.3 Programming the Daily Start/Stop and
Holiday Schedule 19
3.3 Fault Status Messages 10
6.4 Units With Two Speed Fans 20
4 ENTRY KEYS
6.5 Manual Override 20
4.1 General 12
7 SETPOINT KEYS
4.2 Numerical Keypad 12
7.1 Programming
4.3 Enter Key 12 Leaving Water Control 21
4.4 Cancel Key 12 7.2 Programming Leaving Water Rate Control 22
4.5 AM/PM Key 12 7.3 Leaving Water Temperature Control 24
4.6 Advance Day Key 12
(11/05)
ii 035L02631-100 Rev. 3
8 SYSTEM SAFETIES 12 OPERATING SEQUENCE
8.1 Lockout Safeties (Lockout on first trip) 25 13 I.S.N RELATED STATUS MESSAGES
8.2 Manual Reset Safeties
13.1 I.S.N. Pages 64
(Locks out after 3 faults in 90 minutes) 27
8.3 Automatic Reset Safeties 30 14 HEATPUMP OPERATION ON
YLCS HA UNITS
8.4 Anticipation Safety Controls 31
8.5 Discharge Pressure Step 1 Skip Routine 32 14.1 Mode Selection. 68
14.2 LIQUID TEMP/RANGE KEY 68
9 CONTROLS
14.3 Leaving Liquid Temperature Control 68
9.1 Condenser Fan Control 33
14.4 Leaving Liquid Hot\Cold Differential
9.2 Imperial Display 37 Skip Step 1 Routine 71
10 PRINT KEYS 15 TECHNICAL DATA
15.1 Pressure, Temperature and
10.1 General 46 Motor Current Tables 72
10.2 Remote Printout 15.2 Fan Pressure Settings 73
Oper Data 46
15.3 Motor Current Program Values 74
10.3 Remote Printout
History 46 15.4 Loading Charts 76
10.4 Local Display Readout 15.5 Digital Input/Output Software
Oper Data 47 Cross Reference Tables 77
10.5 Local Display Readout 16 OPTIONAL ACCESSORIES
History 50
16.1 York EMS Micro Interface Card 82
10.6 Memory Battery Back-up 54
16.2 Discrete Contact Closure 83
16.3 0-10 Vdc Customer EMS Signal 84
11 SYSTEM COMPONENTS
16.4 4-20 mA dc Customer EMS Signal 84
11.1 Control Panel 57
11.2 Remote Emergency Stop Device 57
11.3 Voltage Free Contacts 57
11.4 Alarm Contacts 57
11.5 Chilled Liquid Pump Contact 57
11.6 Run Contact 57
11.7 Customer Voltage Free Contacts 58
11.8 Remote Start/Stop 58
11.9 Flow Switch 58
11.10 Remote Unloading 58
11.11 Remote Setpoint Reset 59
11.12 Fan Full Speed Inhibit 60
11.13 Local Printer Option 60
(11/05)
035L02631-100 Rev. 3 1
1 LOGIC SECTION Keypad commands are acted upon by the
microprocessor to change setpoints, cutouts,
1.1 Introduction scheduling, operating requirements, and to
provide displays.
The YORK Microprocessor Based Control System
(MBCS) is capable of multi-circuit control to A +12 V REG supply voltage from the Power
maintain chilled liquid temperature. On YLCS HA Supply Board is converted to +5 V REG by a
units heatpump operation is also possible to voltage regulator located on the Microprocessor
maintain a hot liquid temperature, see section 14 Board. This voltage is used to operate integrated
for details. circuitry on the board.
A 40 character display (2 lines of 20 characters) Four system switches located on the
allows the operator to display system operating Microprocessor Board activate or deactivate the
parameters as well as access programmed individual systems (compressors). These switches
information already in memory. A keypad for are also used to reset electrical lockout conditions.
programming and accessing setpoints, pressures,
temperatures, motor current, cutouts, daily 1.3 Power Supply Board
schedule, options, and fault information is
provided. The on-board switching power supply (protected
by fuse –F5) converts 24 Vac from the logic
A unit 1/0 (Auto/Off) (lockable in the off position) transformer to +12 V REG which is supplied to the
switch is available to activate or de-activate the Microprocessor Board, Relay Board and
chiller system. Separate system (SYS) switches 40 Character Display to operate the integrated
for each refrigerant system are provided on the circuitry.
Microprocessor Board.
A rectifier and filtering circuit for each motor current
Remote cycling, unloading and liquid temperature transformer (CT) rectifies and filters these current
reset can be accomplished by voltage free signals to a proportional dc voltage.
customer contacts.
This dc voltage representing motor current is then
Compressor starting/stopping and passed to the Microprocessor Board as an
loading/unloading decisions are performed by the analogue input for processing into digital values.
microprocessor to maintain leaving water
temperature. These decisions are a function of 1.4 Relay Output Board
temperature deviation from setpoint and rate of
change of temperature. This board is fitted with relays to operate as
outputs. Output 1 to 24 are directly connected to
1.2 Microprocessor Board output drivers on the micro board. For these
outputs the board convert the 12 V dc signal from
The Microprocessor Board is the controller and the micro board into a 220/230 V level used by the
decision maker in the control panel. System inputs motor contactors, solenoid valves, etc. to control
from pressure transducers and temperature system operation. The common side of all relays
sensors are connected directly to the are connected to 12 Vdc unregulated.
Microprocessor Board.
The open collector outputs of the Micro Board
The Microprocessor Board circuitry multiplexes drivers energise the DC relays by pulling the other
these analogue inputs, digitises them, and side of the relay coil to 0 Vdc. When not energised,
constantly scans them to keep a constant watch on both sides of the relay coils will be at 12 Vdc
the chiller operating conditions. From this potential. Outputs 25 to 32 are controlled by relay
information, the microprocessor then issues drivers which in turn are controlled by a data latch.
commands to the Relay Output Board to control The latch is connected to 3 address, one enable
contactors, solenoids, etc. for water temperature and one data line from the micro board. The
control and to react to safety conditions. common side of all relays are connected to 12 Vdc
unregulated.
(11/05)
2 035L02631-100 Rev. 3
The open collector outputs of the relay board 1.7 Emergency Stop Device
drivers energise the DC relays by pulling the other
side of the relay coil to 0 Vdc. When not energised, The EMEGENCY STOP DEVICE takes the form of
both sides of the relay coils will be at 12 Vdc. a red/yellow switch. This switch performs two
functions. The first function of the switch is an
The relay board has customer terminals for the EMERGENCY STOP DEVICE. In the 0 (OFF)
connection of the customer voltage free contacts. position the EMERGENCY STOP DEVICE will
The output relay board also has a seperate remove the 220/230V control supply and supply to
customer terminal block which is connected to the electronics. All devices are de-energised
voltage free contacts on the output relays to including compressor and on air cooled units fan
provide remote signalling. contactors. The loss of supply to the Power Board
results in the display going off.
1.5 Current Transformer (-TC)
To conform with the requirement of EN 418 and
A Current Transformer on the 3 q power wiring of EN 60204-1 that re-setting the EMERGENCY
each motor sends ac signals proportional to motor STOP DEVICE will not initiate a restart, MANUAL
current to the Power Supply Board which rectifies RESTART should be programmed under the
and filters the signal to variable dc voltage PROGRAM key. MANUAL RESTART requires a
(analogue). This analogue level is then fed to the reset using the unit switch under the key pad. The
Microprocessor Board to allow it to monitor motor second function of the switch is as a common
current. control circuit disconnector. The switch can be
locked in the 0 (OFF) position using a padlock.
1.6 40 Character Display
YAES 3 & 4 system units Emergency Stop
The 40 Character Display (2 lines of 20 characters) Device
is a liquid crystal display used for displaying
system parameters and operator messages. The The main panel Emergency Stop Device is as
display has back lighting for night viewing as well described above and only affects systems 1 and 2.
as a special feature which intensifies the display The slave panel is fitted with its own Emergency
for viewing in direct sunlight. Stop Device and has the same features as the
main panel Emergency Stop Device but for system
YAES 3 & 4 System Units 3/4 only.
On the YAES 3 & 4 system units a second panel a 1.8 Unit 1/0 (Auto/Off) Switch
Slave control panel is fitted. This panel contains
the power contactors for the compressor and fans A unit 1/0 (Auto/Off) Switch is located control
for system 3/4. It also contains a slave micro board section door. This switch allows the operator to
powered from its own power board and controls its turn the entire chiller OFF if desired. The switch
own relay board. The slave micro board is must be placed in the 1 (AUTO) position for the
responsible for the control and safety routines for chiller to operate.
system 3/4 and receives data such as capacity
demand step and other operating instruction from Whenever the switch is placed in the 0 (OFF)
the main panel micro board via a R485 position, a STATUS display indicating the
communications link. The slave panel is not fitted condition will be displayed. This message is shown
with a keypad or display the required data being below.
transmitted to the main panel where this data is
available along with system 1 and 2 data on a UNIT SWITCH IS IN
THE OFF POSITION
single key pad and display. Due to the
communication link data for system 3/4 is only
On YAES 3 & 4 system unit the unit switch is fitted
updated every 10 second instead of 2 seconds for
to the main panel only.
systems 1 and 2.
(11/05)
035L02631-100 Rev. 3 3
1.9 System Switches
SYSTEM 1-4 SWITCHES are located on the
Microprocessor Board.These switches allow the
operator to selectively turn ON or OFF a given
system as desired.
The System Switch for a designated system must
be ON, switch to right for the system to operate.
Whenever a switch is placed in the OFF position, a
STATUS display indicating this is displayed. A
sample of this message is shown below.
SYS # 1 SYS SWITCH OFF
SYS # 2 SYS SWITCH OFF
This message will not appear if
Anti-recycle or Anti-coincident timers are
in effect and are being displayed.
On YAES 3 system unit there are two system 3
system switches, SYS 3(S4) on the main micro
board and SYS 1 (S2) on the slave micro board.
Both these switches must be in the On position for
system 3 to be allowed to run. Either switch in the
Off position will shutdown system 3. In the same
way on YAES 4 system unit system 4 uses SYS
4(S5) on main micro board and SYS2 (S3) on the
slave micro board.
1.10 Keypad
The operator keypad allows complete control of
the system from a central location. The keypad
offers a multitude of commands available to
access displays, program setpoints, and initiate
system commands.
1.11 Battery Back-up
The Microprocessor Board contains a Real Time
Clock integrated circuit chip with an internal battery
back-up. The purpose of this battery back-up is to
assure any programmed values (setpoints, clock,
cutouts, etc.) are not lost during a power failure
regardless of the time involved in a power cut or
shutdown period.
(11/05)
4 035L02631-100 Rev. 3
POWER BOARD
OPTIONAL
MICRO GATEWAY
RELAY BOARD
OPTIONAL
J 18 EMS CARD
EPROM
S6
(U6)
S1
RTC 1
(U13)
S2
to
S5 RS485
J19
RS232
MICROPROCESSOR BOARD
Microprocessor Board On YAES 3 & 4 system units main micro
J18 Clock On/Off board S4 is system 3 system switch. On
J19 Set to RS485 YAES 4 system units main micro board
RTC Real Time Clock / S5 is system 4 system switch. Slave
Battery Backup IC micro board DIP switch S1 is not used, S2
is system 3 system switch, S3 is system 4
EPROM Software IC
system switch and S5 and S6 are not
(Label shows Version)
used. When fitted optional micro gateway
S1 Dip Switch
or optional EMS card are only fitted to the
S1-5 Display - SI or Imperial
main panel.
S2 System 1 Switch
S3 System 2 Switch
S4 Not used
S5 Not used
S6 ISN Mode Selection Switch
(11/05)
035L02631-100 Rev. 3 5
Each of the keys and an example of the typical
corresponding display messages is detailed
below.
2.2 Chilled Liquid Temps
Displays chiller leaving water temperature from the
cooler.
LWT = 8.2 DEG C
Or on YAES 4 system units
LWT1 = 8.2 DEG
LWT2 = 8.1 DEG C
2 DISPLAY KEYS The minimum limit is -20.6°C
The maximum limit is 61.0°C
2.1 General
2.3 Ambient Temp
The DISPLAY keys allow the user to retrieve
system pressures, system motor currents, chilled Displays the ambient temperature.
liquid temperature, ambient temperature,
compressor running times, number of compressor AMBIENT AIR
starts, and option information on the chiller = 14.2 DEG C
package. This data is useful for monitoring chiller
operation, diagnosing potential future problems, The minimum limit on the display is -18.4°C.
troubleshooting, and commissioning the chiller. The maximum limit on the display is 56.2°C.
Displayed data will be real-time data displayed on 2.4 System 1 Pressures
a 40 character display consisting of two lines of 20
characters. The display will update all information On YAES 3/4 system units press the
at a rate of about 2 seconds. For YAES 3/4 system System 1 & 2 Pressures key a second
units due to the communication delay with the time to display System 2 pressures.
slave panel the display of system 3 information is
at a rate of about 10 seconds.
Displays oil pressure, suction pressure, and
W h e n a DI S P L A Y k e y i s p r e s s e d t h e discharge pressure on System 1 when this key is
corresponding message will be displayed and will pressed.
remain there until another key is pressed.
SYS # 1 OIL = 4.7 BARD
SP = 4.18 DP = 17.4 BARG
The display message may show characters
indicating “greater than”(>) or “less than” (<) as an The minimum limits are:
out of range value. These characters indicate the
actual values are greater than or less than the limit Oil Pressure: 0 BAR_D (Differential)
and thus out of range. Suction Pressure: 0 Bar
Discharge Pressure: 0 BAR
For YAES 3 system units System 1 pressures
becomes System 1 & 2. System 2 pressures The maximum limits are:
becomes System 3 and on YAES 4 system units
system 3 & 4. Oil Pressure: 27.5 – Suction Pressure BAR_D
(Differential)
Suction Pressure: 13.79 BAR
Discharge Pressure: 27.5 BAR
(11/05)
6 035L02631-100 Rev. 3
2.5 System 2 Pressures COMP1 = 105 A 53% FLA
COMP2 = 120 A 64% FLA
On YAES 3 system units this key is for
The minimum limit is “0" amps 0% FLA.
system 3 pressures. On YAES 4 system
The maximum limit is dependant on unit size.
units this key is for system 3 & 4
pressures. On YAES 4 system units press
On YAES 3 system units pressing the key a second
the System 3 & 4 Pressures key a second
time displays system 3 motor current data as well
time to display System 4 pressures.
as system 4 data on YAES 4 system units.
Displays oil pressure, suction pressure, and
2.8 Operating Hours
discharge pressure on System 2 when this key is
Start Counter
pressed.
SYS # 2 OIL = 4.9 BARD Displays accumulated running hours and starts on
SP = 4.21 DP = 18.3 BARG each compressor when this key is pressed.
The minimum limits are: The hours counters for an individual system count
to a total of 99,999 hours before rollover. A total of
Oil Pressure: 0 BAR_D (Differential) 99,999 starts can be logged on a system before the
Suction Pressure: 0 Bar counter will roll over.
Discharge Pressure: 0 BAR
HRS 1 = 462, 2 = 718
STR 1 = 37, 2 = 48
The maximum limits are:
The numbers “1” and “2” on the display message
Oil Pressure: 27.5 – Suction Pressure BAR_D
indicate compressor #1 and compressor #2.
(Differential)
Suction Pressure: 13.79 BAR
These counters are “zeroed” at the factory or will
Discharge Pressure: 27.5 BAR
indicate only run time and number of starts logged
during factory testing at the time of shipment.
2.6 Compressor Temperatures
On YAES 3 system units pressing the key a second
D i s p l a y s c o mp r e s s o r o i l a n d d i s c h a r g e
time displays system 3 operating hours and starts
temperature for system 1 when this key is pressed
counter as well as the data for system 4 on YAES 4
and system 2 when this key is pressed a second
system units.
time.
SYS1 OIL = 34.7 DEG C 2.9 Options
SYS1 DSCH = 37.8 DEG C
The Options key provides a display of options
The minimum limit oil is -17.7°C discharge 29.6°C factory set based on customer order.
The maximum limit oil is 122.4°C discharge
144.4°C When the OPTIONS key is pressed, the following
message will first be displayed for 3 seconds:
On YAES 3 system units pressing the key a third
time displays system 3 compressor temperatures. THE FOLLOWING
ARE PROGRAMMED
On YAES 4 system units pressing the key a fouth
Option Messages will then follow. Each will be
time displays system 4 compressor temperatures
displayed for 3 seconds before the next display is
automatically indexed. When all messages are
2.7 Motor Current
displayed, the display message will automatically
change to show a chiller “STATUS” message, just
Displays motor currents and %FLA when this key
as if the STATUS key was pressed.
is pressed.
Below is a list and explanation of the messages in
the order they appear. For all messages, two
(11/05)
035L02631-100 Rev. 3 7
possible variations may appear for each of the May be displayed as an alternative to remote
messages depending on the customer order. control mode. When connected to a York I.S.N
system the I.S.N is only allowed to remotely
MESSAGE 1 monitor the machine.
GLYCOL MESSAGE 4
COOLING
DIP SW 4 SPARE
The chilled liquid temperature setpoint can be
programmed from -12.2 to 21.1°C and cutout set in
the range of -13.3°C to 2.2°C MESSAGE 5
OR IMPERIAL
UNITS
WATER
COOLING Display messages will show units of measure in
Imperial units (°F and PSI).
The chilled liquid temperature setpoint can only be
programmed from 3.5 to 21.1°C and the cutout is OR
set to 2.2°C
SI
UNITS
MESSAGE 2 (2 System Units Only)
STANDARD UNITS Display messages will show units of measure in SI
units (°C and Bar).
This message STANDARD UNITS indicates that MESSAGE 6
the unit is configured to cover YAES and YLCS
SA/AA units SEQUENCE COMMANDER
OPTION DISABLED
YLCS HA UNITS
This message shows that switch 6 of S1 DIP switch
on the microprocessor board is set to open. With
This message indicates the unit is configured for this selection the unit is set for single unit operation
YLCS HA units. See section 14. using its own controls.
OR OR
MESSAGE 2 (3 System Units Only) SEQUENCE COMMANDER
OPTION ENABLED
DIP SW 2 SPARE
This message shows that switch 6 of S1 DIP switch
on the microprocessor board is set to closed. With
MESSAGE 3 this selection the unit will operate under multiple
unit control using York Sequence Commander
REMOTE CONTROL concept.
MODE
MESSAGE 7
Standard mode. When connected to a York I.S.N
system the I.S.N is allowed to take control of the USE ALL COMPRESSOR
systems operation and remotely monitor the LOADING STEPS
machine.
MESSAGE 8
OR
REFRIGERANT TYPE
LOCAL CONTROL R134a
MODE
(11/05)
8 035L02631-100 Rev. 3
has been tampered with and the unit will
not run.
UNIT SWITCH IS IN
THE OFF POSITION
This message informs the operator that the unit 1/0
(AUTO/OFF) switch on the main control panel is in
the 0 (OFF) position which will not allow the chiller
to run.
POWER FAILURE
MANUAL RESET
3 STATUS KEY
Or on YAES 3/4 system units:
3.1 General
MASTER POWER FAILURE
MANUAL RESET
Pressing the STATUS key will enable the operator
to determine current chiller operating status as a or
whole and as individual systems. The messages
displayed will include running status, cooling SLAVE POWER FAILURE
demand, fault status, external cycling device MANUAL RESET
status, and anti-recycle timer status. The display
will be a single message relating to the highest These messages inform the operator that a supply
priority message as determined by the interruption or under voltage condition has
microprocessor. Status messages fall into the occurred and that manual reset after power failure
categories of General and Fault Status with each of has been programmed under the PROGRAM key.
the categories discussed below. A reset using the unit switch is then required.
On YAES 3 system units pressing the Status key a On YAES 3 & 4 system units leave the unit switch in
second time displays system 3 Status messages the Off position for at least 10 seconds to allow the
as well as system 4 on YAES 4 system units. reset to be transmitted to the slave panel. Or
alternatively the Slave panel power failure can be
3.2 General Status Message reset by setting the main panel micro board system
switch 3 (SYS 3(S4)) and switch 4 (SYS 4(S5)) to
Each of the general status messages with a Off, thus resetting the slave panel without
description of it’s meaning will follow. In the case of interrupting systems 1 and 2's operation.
messages which apply to individual systems,
DAILY SCHEDULE
SYS 1 and SYS 2 messages will both be displayed SHUTDOWN
and may be different.
The DAILY SCHEDULE SHUTDOWN message
For YAES 3 system units and YAES 4 system units indicates that the schedule programmed into the
where the status messages are the same as for “CLOCK” “SET SCHEDULE/HOLIDAY” is
system 1 & 2, they will not be given, only the keeping the chiller from running.
messages unique to system 3 or system 4 will be
included. SYS#1 NO RUN PERM
SYS#2 NO RUN PERM
REPROGRAM TYPE OF
REFRIGERANT TO RUN No Run Permissive shows that a remote contact is
open either the flow switch terminals 10 & 13 or the
This message should never appear, if it remote Off/Auto contacts/terminals 11 & 14 No.
does consult your local York office. This 1 system and No. 2 system terminals 12 & 15.
message is a warning that the setting for
the type of refrigerant used with the unit On YAES 3 system units a flow switch with two
separate normally open contacts or two separate
(11/05)
035L02631-100 Rev. 3 9
flow switches are required, the second contact units fitted with a starting bypass valve this valve
wired to terminals 10 & 13 in the slave panel. With opens at the start of the start sequence and closes
this contact open or the remote Off/Auto contact when the starter goes into delta .
terminals 11 & 14 No 3 system slave panel a
SYS#3 NO RUN PERM message will be given. SYS#1 COMP RUNNING
SYS#2 COMP RUNNING
On YAES 4 system units a second flow switches is
The COMP RUNNING message indicates that the
required. No Run Permissive messages shows
respective compressor is running due to demand.
that a remote contact is open either the slave flow
switch slave panel terminals 10 & 13 or the remote SYS#1 PUMPING DOWN
Off/Auto contacts slave panel terminals 11 & 14 SYS#2 PUMPING DOWN
No. 3 system and No. 4 system terminals 12 & 15.
This message shows that a system is pumping
SYS#1 SYS SWITCH OFF down before stopping. When system shut down is
SYS#2 SYS SWITCH OFF
initiated by fall in demand the liquid line solenoid
valve will close.
This message informs the operator that a system
switch on the micro board in the logic section is set
The system will continue to run and only shut down
to OFF.
when the suction pressure falls to below the
SYS#1 OIL TEMP INHIB suction pressure cutout value programmed under
SYS#2 OIL TEMP INHIB the PROGRAM key.
This message informs the operator that a minimum A system does not pump down on a fault shutdown
safe oil temperature above ambient has not been or if the unit switch is set to off. This message is
reached, prior to allowing the system to start. overwritten by the SYS SWITCH OFF and DAILY
SCHEDULE SHUTDOWN messages.
As the crankcase heater boils off the refrigerant
from the oil, the oil heats up until the required oil / SYS#1 AR TMR 240 S
SYS#2 AR TMR 120 S
ambient temperature differential is reached and
the system is available to start if required.
The anti-recycle timer message shows the amount
SYS#1 OIL LEVEL INHIB of time left on the respective anti-recycle timer.
SYS#2 OIL LEVEL INHIB This message is displayed when demand requires
the respective system to start but is being held off
This message informs the operator that the oil level due to the timer.
in the compressor is below the minimum safe oil
level thus preventing the system from starting. SYS#1 AC TMR 13 S
SYS#2 AC TMR 13 S
SYS#1 NO COOL LOAD
SYS#2 NO COOL LOAD The anti-coincident timer is a software feature that
guards against 2 compressors starting
This message informs the operator that the chilled simultaneously. This assures instantaneous
liquid temperature is below the point (determined starting current does not become excessively high
by the setpoint and control range) that the due to simultaneous starts.
microprocessor will bring on a system, or that the
microprocessor has not yet loaded far enough into The microprocessor limits the time between
the loading sequence to be ready to bring on the compressor starts to 1 minute regardless of
indicated system ON. The lag system will display demand of the anti-recycle timer being timed out.
this message until the loading sequence is ready The time shown on the anti-coincident timer is the
for the lag system to start. time left on the timer before the respective system
will start. Demand must be present for the
SYS#1 START SEQUENCE message to be displayed and will only appear
SYS#2 START SEQUENCE
when the anti-recycle timer has timed out.
The start sequence messages indicate that the
system is in the 12 second start sequence. On
(11/05)
10 035L02631-100 Rev. 3
SYS#1 CURR LIMITING A detailed explanation of the shutdown thresholds
SYS#2 CURR LIMITING
and associated information related to each fault is
covered in the SYSTEM SAFETIES Section.
Current limiting takes effect when the current nears
the point at which the high current cutout will
Chiller shutdown faults will shut the entire chiller
shutdown the system down. When this message
down, while system shutdown faults will only shut
appears the current has exceeded the
down and lock out the affected system
programmed threshold and the micro is unloading
(compressor).
the affected system to prevent shutdown, until load
conditions moderate to allow reloading. This
CHILLER FAULTS
would typically occur on high pull down conditions.
(Refer to Data section). CHILLER FAULT
LOW AMBIENT TEMP
SYS#1 DSCH LIMITING
SYS#2 DSCH LIMITING CHILLER FAULT
LOW WATER TEMP
Discharge Pressure Limiting takes affect when
discharge pressure nears the point at which the CHILLER FAULT
HIGH AMBIENT TEMP
high pressure cutout will shut the system down
causing total loss of cooling. When this message POWER FAILURE
appears, discharge pressure has exceeded the MANUAL RESET
programmed threshold and the microprocessor is
unloading the affected system to prevent Or on YAES 3/4 system units:
shutdown on a manual high pressure cutout, until
MASTER POWER FAILURE
load conditions moderate to allow reloading. Refer MANUAL RESET
to Data Section.
MANUAL
or
OVERRIDE
SLAVE POWER FAILURE
MANUAL RESET
If the MANUAL OVERRIDE key is pressed, the
STATUS display will display the message shown CHILLER FAULT
above. This will indicate that the Daily Schedule is LWT SENSOR FAULT
being ignored and the chiller will start-up when
CHILLER FAULT
water temperature remote contacts, unit Auto/Off VAC UNDER VOLTAGE
switch and SYSTEM switches permit.
For YAES 3/4 system units:
This is a priority message and cannot be
overridden by anti-recycle messages, LOSS OF COMM LINK
fault messages, etc. when in the STATUS TO SLAVE PANEL
Display mode. Therefore, do not expect to
SYS# 3/4 LOCKED OUT
see any other STATUS messages when LOSS OF COMM LINK
in the MANUAL OVERRIDE mode.
MANUAL OVERRIDE is to only be used in For YAES 4 system units:
emergencies or for servicing.
CHILLER FAULT
3.3 Fault Status Messages MWT SENS FAULT
MASTER PANEL FAULT
A number of possible fault messages may appear LWT SENS FAULT
when the STATUS key is pressed. Whenever a
fault message appears, the safety thresholds on SLAVE PANEL FAULT
the chiller have been exceeded and the entire LWT SENS FAULT
chiller or a single system will be shut down and in
some cases locked out.
(11/05)
035L02631-100 Rev. 3 11
SYSTEM FAULTS
SYS#1 HIGH DSCH
SYS #2 HIGH DSCH
SYS #1 LOW OIL PRESSURE
SYS #2 LOW OIL PRESSURE
SYS #1 LOW SUCTION
SYS #2 LOW SUCTION
SYS #1 CURRENT/MP/HPX
SYS #2 CURRENT/MP/HPX
SYS #1 PUMP DOWN FAIL
SYS #2 PUMP DOWN FAIL
SYS #1 HIGH OIL TEMP
SYS #2 HIGH OIL TEMP
SYS#1 OIL LEVEL FAIL
SYS#2 OIL LEVEL FAIL
SYS#1 DSCH TEMP FAIL
SYS#2 DSCH TEMP FAIL
(11/05)
12 035L02631-100 Rev. 3
The ENTER key is also used to scroll through
available data after any one of the following keys is
pressed:
PROGRAM
SET SCHEDULE/HOLIDAY
OPER DATA
HISTORY
4.4 Cancel Key
The CANCEL key allows the user to change errors
in the data being programmed into memory.
4 ENTRY KEYS When the CANCEL key is pressed, any data which
has been keyed in, but not entered, will be erased.
The original values will re-appear on the display
4.1 General and the cursor will return to the first character to be
programmed in the display message.
The ENTRY key allows the user to change
numerical values programmed in as chiller 4.5 AM/PM Key
setpoints, cutouts, clock, etc.
The AM/PM key allows the user to change AM/PM
4.2 Numerical Keypad while programming the correct time in the SET
TIME display. The same key allows changing the
The NUMERICAL keypad provides all keys AM/PM schedule while programming daily chiller
needed to program numerical values as required. start and stop times in the SET
SCHEDULE/HOLIDAY display.
The “ * ” Key is used to designate holidays when
programming special start and stop times for 4.6 Advance Day Key
designated holidays in the SET SCHEDULE
/HOLIDAY display. The ADVANCE DAY key advances the day when
the SET TIME display is being programmed. The
The “ * ” Key is also used when programming day is normally advanced to correspond to the
languages. current day of the week. The day will advance a
day at a time, each time the key is pressed.
“The “+/-” key allows programming -°C setpoints
and cutouts in the SI display mode.
4.3 Enter Key
The ENTER key must be pressed after any change
is made to setpoints, cutouts or the system clock.
Pressing this key tells the microprocessor to
accept the new values into memory.
If this is not done, the new numbers entered will be
lost and the original values will be returned.
(11/05)
035L02631-100 Rev. 3 13
These values must be checked and
properly programmed wh e n
commissioning the chiller. Failure to
properly program these values may
cause damage to the chiller or
operation problems.
5.2 Leaving Water Temperature Setpoint
YAES 4 system units only
LEAVING WATER TEMP
SETPOINT = 4.5 DEG C
The LEAVING WATER TEMP SETPOINT is the
5 PROGRAM KEY minimum leaving water temperature from each of
the two coolers. See section on PROGRAMMING
PROGRAMMING OR VIEWING SAFETIES LEAVING WATER CONTROL for further details.
LIMITS On chilled water applications, WATER COOLING
is displayed when OPTION key is pressed, the
5.1 General setpoint is adjustable from 3.5 to 21.1°C. On glycol
applications, GLYCOL COOLING is displayed
Pushing the PROGRAM key allows the user to when OPTION key is pressed, the setpoint is
program “selected” system operating limits. As adjustable from -12.2°C to 21.1°C.
well as the programmable values there are a
number of operating limits to inspect. The display 5.3 Local Control Range
includes cutout points for safeties, and the reaction
time of the microprocessor to abrupt changes in YAES 4 system units only
the chilled water temperatures.
LOCAL CONTROL RANGE
1 DEG C
After the PROGRAM key is pressed the
microprocessor will respond by displaying:
The LOCAL CONTROL RANGE applies to each of
PRESS ENTER TO the two coolers. Within the lower section of this
PROGRAM DATA range no further loading of its associated systems
can occur at the dictates of the mixed leaving
Pressing the ENTER key will display the first temperature. See section on PROGRAMMING
setting. The ENTER key must be used to advance LEAVING WATER CONTROL for further details.
the display to the next setting. Settings may be The LOCAL CONTROL RANGE can be set in the
reprogrammed using the 12 “ENTRY” keys. New range of 0.6°C - 4.4°C.
values will be programmed into memory when the
ENTER key is pushed. 5.4 Selected Refrigerant (Factory Set)
If the operator attempts to enter an unacceptable SELECTED REFRIGERANT
R407C OR R134A = 134
value, the microprocessor will respond with a
momentary message indicating the value selected
Display the type of refrigerant the unit is designed
has been ignored. This error message is shown:
to operate with.
OUT OF RANGE
TRY AGAIN! DISPLAY LANGUAGE
ENGLISH
The programmable setting displays are shown and
The following display languages can be
described below along with the range of values
programmed: English, German, French, Italian, ,
which the microprocessor will accept for each
Spanish and Portuguese. Press “ * ” repeatedly
setting.
(11/05)
14 035L02631-100 Rev. 3
until the desired language is displayed. Then press Motor Current Unloading
the ENTER key to accept the new language.
MOTOR CURRENT
UNLOAD = 101% FLA
5.5 Discharge Cutout (Factory Set)
DISCHARGE CUTOUT The motor current unload point can be set in the
= 20.80 BARG range 85% to 101%. Set to 101% to keep the
system from faulting on high motor current due to
The DISCHARGE CUTOUT is a software cutout in high loads or pull down conditions. By unloading
the microprocessor and is backed-up by a the compressor at high motor currents, the chiller is
mechanical high pressure cutout located in the allowed to continue to run automatically at reduced
refrigerant circuit. See Data Section for settings. capacity until load conditions moderate to allow
re-loading. Settings within the range 85% to 100%
5.6 Ambient Temp Low Cutout can be used to limit current demand on the building
by unloading the systems.
AMBIENT TEMP LOW
CUTOUT = -17.6 C
5.9 Rate Control Temp
The AMBIENT TEMP LOW CUTOUT can be set to RATE CONTROL TEMP
establish a chiller low ambient temperature cutout = 5.0 C
point. If the ambient falls below this point the chiller
will shut down. Restart can occur, if demand The RATE CONTROL TEMP establishes a
allows, when temperature rises above the cutout. temperature range over which the microprocessor
may override normal system loading timers and
For normal ambient applications, the cutout is set react to actual rate of change of leaving water
at –18.0°C. temperature. This temperature range starts at the
top of the control range with its band width being
5.7 Ambient Temp High Cutout proПоказано початок документа. Повний текст — у PDF за посиланням вище.
Документ виробника, опублікований як довідковий матеріал на обладнання, яке ми постачаємо. Правовласник може попросити прибрати його — приберемо.