MS2 Two Stage Electronic Control

Вид документа	Інструкція з монтажу
Виробник	JCI
Код документа	ms2-two-stage-electronic-control
Група обладнання	MS2 Multi‐Stage Temperature Controller
Сторінок	6
Мова документа	англійська
Розмір файлу	0.3 МБ

Текст документа

FANs 125, 121
Pressure Controls Section P
Installation Bulletin
Issue Date 1199

INSTALLATION BULLETIN

MS2 Two Stage Electronic Control

W iring
IMPORTANT: All MS2 controls are designed for !
use only as operating controls. WARNING: Risk of Electrical Shock.
Where an operating control Disconnect power supply before
failure would result in personal making electrical connections to
injury or loss of property, it is the avoid possible electrical shock or
responsibility of the installer to equipment damage.
add devices (safety, limit
controls) or systems (alarm,
supervisory systems) that protect Follow these wiring guidelines:
against, or warn of, control  All wiring must conform to the National Electric
failure. Code and local regulations.
 Make all wiring connections using adequate gauge
copper conductors only. Connectors are rated for
Refer to the MS Series Multi-Stage Electronic Controls 14-22 AWG wiring.
Product Bulletin, LIT-125502, for necessary
Refer to Rating Table for more information.
information on operation and performance
specifications for this product. Internal to Control

C1  C2  V1 V2 D SC VO
M ounting +
Stage  Stage  Power
The MS2 control is not position-sensitive but should be Supply
mounted for convenient wiring and adjustment. Terminal Binary /
Sensor
Not Used Binary Input Sensor
To mount the DIN Rail Mount version, install the DIN Common
rail where appropriate. Snap the control onto the rail in
position. Figure 1: MS2 Panel Mount Wiring
To mount the Panel Mount version, ensure that there Binary
is sufficient space behind the panel. At least Sensor Sensor Common Common
2-3/4 inches (70 mm) are needed. Make a cutout Binary Input
Stage 
1-3/16 by 2-13/16 inches (29 by 71 mm). Remove
retaining clip from control. Insert the control into the +
hole. Install retaining clip and adjust for tightness. VO S1 SC D CD C2 
Internal
to Control
V1 V2 C1 
Terminal
Not Used
Power Supply Stage 
Refer to Rating Table for more information.

Figure 2: MS2 DIN Rail Mount Wiring

© 1999 Johnson Controls, Inc. 1
Part No. 24-7664-1814, Rev. A www.johnsoncontrols.com
Code No. LIT-125504
process temperature.

Table 1: Wiring
MS Series P99-1V HE-6300 or
Terminal Wire Color HE-6310
Terminal
VO Brown (+) PWR
SC Green (common) COM
S1 White (signal) OUT

Table 2: Rating Table
Rating Category 120 240 24
VAC VAC VDC
Horsepower 1/4 1/2 -
Full Load Amperes 5.8 4.9 -
Locked Rotor Amperes 34.8 29.4 -
Inductive (non-motor) 8 8 8
Amperes
Pilot Duty VA 275 450 -

Power supply is 24 VAC.
Terminal VO output is 12-17 VDC.

F CC Compliance
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the
instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in
a residential area is likely to cause harmful
interference, in which case the user will be required to
correct the interference at his/her own expense.

C anadian DOC Compliance
This digital apparatus does not exceed the Class A
limits for radio noise emissions from digital apparatus
set out in the Radio Interference Regulations of the
Canadian Department of Communications.

D isplay
Press Up and Down buttons to scroll
through process temperature and binary
input status (On or OF). After 15 seconds
of inactivity, the display shows the
2 P—MS2 Two Stage Electronic Control Installation Bulletin
1. Hold the Enter button down for 3 seconds.
S etting Up the Stage Control The display will change to show the setpoint.

2. Press the Up or Down button until you reach
the new setpoint.
To lock/unlock the unit for programming
Press the Enter, Up, and Down buttons 3. Press the Enter button to save the new
simultaneously and hold until “- - -” is displayed. setpoint.
Hold for about 10 seconds until the current
condition value is displayed. This toggles the Note: If you do not press the Enter button after selecting the new
keypad between locked and unlocked. setpoint, it is not saved. The control reverts to old setpoint.

To run the self test procedure To program other settings (modes b, d, r only) or to
program setpoints and settings (mode i only)
IMPORTANT: Disconnect loads before beginning self-test
1. Hold the Enter button down for about
procedure. Cycle power to resume normal
10 seconds. The display will change to HY.
operation.
(The display shows S1 if in Mode i.)
Press the Up and Down buttons in sequence, 2. Press the Up or Down button until the desired
and hold for 5 seconds. setting is shown.

3. Press the Enter button. The setting’s current
value is displayed.
To select the mode of operation
1. Press and hold the Enter and Down buttons 4. Press the Up or Down button until the desired
simultaneously for approximately 7 seconds. value is shown.

2. Press the Up or Down button until the desired 5. Press the Enter button to save the new
setting is shown. value. After 10 seconds of inactivity, the
display will return to its normal function.
2d =Direct
2r = Reverse Note: If you do not press the Enter button after selecting the new
2b = Deadband value, it is not saved. The control reverts to the old value.
2i = Independent Setpoint
3. Press the Enter button to save the new mode
of operation.

To change the setpoint (modes b, d, and r only)

P—MS2 Two Stage Electronic Control Installation Bulletin 3
Table 3: Functions and Settings
Mode 2d = Direct 2r = Reverse 2b = Deadband 2 = Independent Setpoint d
Setting Description Setting Range Default

SI Setpoint Modes d, r, b: relay cut-off point 0 to 99 —
Mode I: primary setpoint
HY Differential (Hysteresis) Difference relative to setpoint or offset at which the 1 to 9 5
load is switched On or Off
S2 Setpoint 2 (Offset) Modes d, r: difference between setpoint and Stage 2 d, r: 1 to 40 5
Mode b: deadband (centered on setpoint) b: 2 to 40
Mode I: secondary setpoint I: LL to HL
H2 Differential (Hysteresis) 2 See Differential (Hysteresis). 1 to 9 0
LL Low Setpoint Stop Lower limit of end-user setpoint adjustment 0 to HL 99
HL High Setpoint Stop Upper limit of end-user setpoint adjustment LL to 99 90
Cc Anti-short Cycle Timer, Time delay between equipment On cycles for direct 0 to 9 minutes 2
Direct stages
CH Anti-short Cycle Timer, Time delay between equipment On cycles for reverse 0 to 9 minutes 0
Reverse stages
rt Soft Start Rate at which condition approaches setpoint 0 to 99 minutes/ 10
(1% or 1 psi)
AH High Condition Alarm High condition alarm On, value relative to setpoint 0 to 50 above setpoint 15
AL Low Condition Alarm Low condition alarm On, value relative to setpoint -50 to 0 below setpoint -15
Ad Alarm Differential Condition difference relative to high and low alarms at 1 to 9 5
which alarm output is switched Off
At Alarm Time Delay Delay between alarm detection and activation 0 to 99 minutes 15
So Sensor offset Compensates for long sensor leads or sensor location -20 to +20 0
Lr Low range Analog Input Adjusted condition value when sensor input is 0.0 VDC -40 to Hr 0
Hr High range Analog Input Adjusted condition value when sensor input is 10.0 VDC Lr to 99 99
PU Display Refresh Rate Time delay between display refreshes 1 to 99 seconds 1
IF Binary Input Function Configuration for normally closed binary input 0 = No binary input 0
1 = Shutoff/alarm
signaling
2 = Setback
3 = Remote shutoff
Sb Setback Value of setpoint shift when binary input is open and 0 to 20 10
IF=2
Id Binary Input Time Delay Time between binary input detection and enabling of IF 0 to 99 minutes 0
iS Interstage Time Delay Minimum amount of time between two successive 3 to 99 seconds 3
stages

R epair and Replacement
Field repair must not be made. In case of defective or When requesting a replacement, refer to the model
improperly functioning control, contact your nearest number found on the data plate of the control.
authorized Johnson Controls/PENN distributor.

4 P—MS2 Two Stage Electronic Control Installation Bulletin
F ault/Alarm and Status Codes
Table 4: Status Codes (steady on display)
Status Code Indicates

On Binary Input is closed
OF Binary Input is open.

Table 5: Fault/Alarm and Status Codes
Error Code (Flashing on Display) System Status

EE Program failure; control must be replaced. Alarm message displays, other outputs off.
FI Indicates an open or shorted sensor. Alarm message displays. Correct problem and cycle power to
reset.
AI Binary input (IF) Option 1 selected and binary input Control output is switched off; alarm message displays.
open for longer than time delay (id). Correct condition to reset. Restarts without using soft start.
DF Binary input (IF) Option 3 is selected and binary input Control output is switched off. Close binary input to reset.
open. Restarts using soft start.
HI Condition has reached or exceeded (setpoint + AH). Alarm message displays. Correct condition to reset.

LO Condition has reached or fallen below (setpoint - AL). Alarm message displays. Correct condition to reset.

O rdering Information
Table 6: Specifications
Power Requirements 3.7 VA @ 24 VAC, 50/60 Hz, Class 2 (20-30 VAC)

Ambient Conditions Operating: +14 to +140oF (-10 to +60oC); 0 to 95% RH (non-condensing)
Storage: -22 to +176oF (-30 to +80oC); 0 to 95% RH (non-condensing)
Agency Listings UL Recognized: File E194024, CCN XAPX2
Canadian UL Recognized: File E194024, CCN XAPX8
FCC Compliant per Class A Digital Device, Part 15
Canadian DOC Compliant per Class A, Radio Interference Regulations

Table 7: Ordering Information
Item Code Description
MS2DR24V-11C MS2 DIN Rail Mount Control; 0-10 VDC input; sensor sold separately
MS2PM24V-11C MS2 Panel Mount Control; 0-10 VDC input; sensor sold separately
HE-6300 Series Humidity Sensor, Wall Mount, 0-100% RH
HE-6310 Series Humidity Sensor, Duct Mount, 0-100% RH
P99V-1C P99 Pressure Transducer, 0-100 psig
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult Johnson Controls/Penn Refrigeration Application Engineering at (414) 274-5535. Johnson Controls, Inc. shall not be
liable for damages resulting from misapplication or misuse of its products.

Controls Group
507 E. Michigan Street
P.O. Box 423 Printed in U.S.A
Milwaukee, WI 53201 www.johnsoncontrols.com
P—MS2 Two Stage Electronic Control Installation Bulletin 5
6 P—MS2 Two Stage Electronic Control Installation Bulletin

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