| Вид документа | Бюлетень виробу |
|---|---|
| Виробник | JCI |
| Код документа | ms-series-multi-stage-electronic-temperature-control |
| Група обладнання | MS2 Multi‐Stage Temperature Controller |
| Сторінок | 17 |
| Мова документа | англійська |
| Розмір файлу | 0.4 МБ |
Текст документа
Master Catalog 125
Temperature Controls Section A
Product Bulletin MS
Issue Date 0618
MS Series Multi-Stage Electronic Temperature Controls
The MS Series Controls are versatile,
microprocessor-based, multifunction, programmable
temperature controls. They are designed for single and
multiple stage temperature control applications.
Depending on the model selected, the MS Series
Controls can operate in the following modes:
Direct mode
Reverse mode
Deadband mode
Independent Setpoint mode
The MS Series Controls have large, easy-to-read,
red Light-Emitting Diode (LED) displays. These
compact controls are available in Panel Mount and Figure 1: MS4 Panel Mount and DIN Rail
DIN Rail Mount models. MS Series Controls use the Multi-Stage Electronic Temperature Controls
A99B temperature sensors, which allow remote
mounting of the display unit.
Features and Benefits
Programmable Functions Allows adjustment of control settings to meet
application needs
Alarm Management Provides visible alarm codes on the display
Functions
Easily Readable LED Displays temperature and functions quickly
Display and clearly
Programming Button Allows user to disable programming buttons
Lockout and deter accidental or unauthorized changes
Accurate Sensors for Provides accurate control performance with up to
Temperature 300 feet of wiring (an adjustable offset is provided
for longer wiring)
Self-Test Procedure Checks control operation by cycling all
outputs and testing all LEDs
© 2018 Johnson Controls 1
Code No. LIT-125198
O verview
IMPORTANT: All MS Series Controls are Mode Selection
designed for use only as
operating controls. Where an Mode Selection allows selection of one of several
operating control failure would modes, depending on the model:
result in personal injury or loss of
Direct mode for cooling applications
property, it is the responsibility of
the installer to add devices Reverse mode for heating applications
(safety, limit controls) or systems
Deadband mode for applications requiring cooling
(alarm, supervisory systems) that
and heating with a common setpoint and a
protect against, or warn of,
deadband
control failure.
Independent Setpoint mode for applications
Refer to a specific model’s installation bulletin for the requiring cooling and heating with an independent
necessary information on installation, use, and setpoint for each
servicing.
Table 1: Selected Applications Stage Control Functions
MS1 MS2 MS4 Application Adjustable Setpoint Stops restrict setpoint
adjustment to avoid extreme settings. The setpoint
Cooling tower pump and/or
cannot be changed to a value outside of these stops.
fan control
Rooftop heating or cooling Soft Start controls the rate at which temperature
approaches the setpoint on power up, both initially and
units
when the binary input is configured as a remote
Boiler or pump control shutoff.
Anti-short Cycle Delay avoids situations where the
Space temperature control
equipment starts, stops, and restarts in a short period
of time. This feature determines the minimum time
Compressor or chiller staging between two subsequent On cycles of the equipment.
Binary Input Functions
The MS2 and MS4 controls are equipped with a binary
input that can perform one of the following functions:
Shutoff and Alarm Signaling: When the binary
input is open for a time longer than the binary input
time delay, all outputs are shut off and an alarm
message is displayed. Restart does not use the
soft start feature.
Setback: When the binary input is open, the
setpoints are shifted by a preset value in order to
save energy.
Remote Shutoff: When the binary input is open for
a time longer than the binary input time delay, all
outputs are shut off and an alarm message is
displayed. Restart uses the soft start feature.
2 MS Series Product Bulletin
Dual Sensor Temperature Reset Display Updating Time provides an adjustable
refresh rate to avoid displaying short duration
This feature resets the Setpoint based on the fluctuations.
difference between temperature reading from the
Auxiliary Temperature Sensor (ATS) and the setpoint. Units of Measurement for temperature measurement
This feature is available only on the MS4 Series and can use either Fahrenheit or Celsius temperature
can only be used when the ATS is connected. scales.
Alarm Management Functions D imensions
High and Low Temperature Alarms have setpoints 2 11/16 1/4
relative to the main setpoint. If the temperature (68) (6)
reaches or exceeds the alarm values, the display
flashes a specific alarm message. On the MS1, an 1 1/8 1 3/8
alarm output circuit is energized. The MS2 and MS4 (28) (35)
2
controls have no alarm output. Alarms are disabled for (50)
20 minutes after startup in addition to the alarm time 2 5/16
delay. (58)
Alarm Time Delay is used to avoid short-duration
events triggering the alarm.
2 3/4
Alarm Differential can be set to keep the alarm from (70) 3
cycling rapidly on and off. (75) 78 3/4
Sensor Failure is indicated by an alarm message on (2000)
the display.
Alarm codes are displayed by the LEDs and are used
to help troubleshoot errors. Alarm codes exist for these
conditions:
process sensor failure Figure 2: Panel Mount Control and
A99 Sensor, in. (mm)
high temperature alarm
2 3/4
low temperature alarm (70)
2 1/8
(52.5)
program failure
binary input codes
Self-Test Procedure
The self-test procedure allows the user to verify that 1
13 11
16 4
the LEDs and outputs of an MS control are operating 16
correctly before the control is put into service. (45)
(118)
Additional Features
Programming Button Lockout allows the
programming buttons to be deactivated, which deters
accidental or unauthorized modifications to the
settings. Figure 3: DIN Rail Mount Control, in. (mm)
Sensor Offset allows programming an offset of the
measured temperature for use with sensor leads
longer than 300 ft.
MS Series Product Bulletin 3
M odes of Operation
Display The MS1 Series Control performs temperature and
The display has two 7-segment LEDs and a minus (-) alarm management for single-stage applications. It
indication to display temperatures from -40 to 99°F operates in either Direct or Reverse modes.
(-40 to 70°C), with 1F° (C°) resolution. Three individual The MS2 Series Control performs temperature
stage status LEDs display the relay status. management for 2-stage applications. In addition to
LED indicates Relay Output 1 is energized. the MS1 modes, it has Deadband and Independent
Setpoint modes for applications that require both
LED indicates Relay Output 2 is energized. cooling and heating.
LED indicates Relay Output 3 is energized. The MS4 Series Control performs temperature
management for 4-stage applications. It has the same
The MS1 has one stage status LED. The MS2 has
mode selection as the MS2. It can automatically adjust
two stage status LEDs. The MS4 has three stage
the setpoint to save energy, based on readings from
status LEDs.
the auxiliary temperature sensor and the function
Stage Status LEDs
settings.
Table 2: Modes of Operation
Up
Button MS1 MS2 MS4 Modes of Operation
Enter
Down
Button
Button Direct (Cooling)
Reverse (Heating)
Deadband (Cooling and
Figure 4: Panel Mount Front Panel and Display Heating)
Independent Setpoint
(Cooling and Heating)
Stage Status LEDs
The illustrations on the following pages show the
modes that each MS Series Control is capable of
Up Button using.
Down Button
Figure 5: DIN Rail Mount Front Panel and Display
The MS1 has one stage status LED. The MS2 has
two stage status LEDs. The MS4 has three stage
status LEDs.
4 MS Series Product Bulletin
Direct Mode (Cooling)
Temperature
Interstage
Time
Delay
On
Interstage
Time
Delay
Stage 4 Differential 4
On
Interstage Off
Time Stage 3
Delay Differential 3
On
Off Setpoint 4
(Offset from
Stage 2 Differential 2 Setpoint)
Setpoint 3
On Off (Offset from
Setpoint)
Setpoint 2
(Offset from
Stage 1 Differential Setpoint)
Off Setpoint
Time
Figure 6: Direct Mode
Direct mode is used for cooling applications. The MS1 Setpoint 3 is the offset from setpoint that activates
has one stage. The MS2 has two stages. The MS4 Stage 3.
has four stages. Where desirable, stages may overlap
Differential 3 is the operational range of Stage 3.
or have space between them.
Setpoint 4 is the offset from setpoint that activates
Setpoint is the desired temperature.
Stage 4.
Differential is the operational range of Stage 1.
Interstage Time Delay is the minimum amount of time
Setpoint 2 is the offset from setpoint that activates between two successive stages when multiple stages
Stage 2. are called for in rapid sequence.
Differential 2 is the operational range of Stage 2.
MS Series Product Bulletin 5
Reverse Mode (Heating)
Temperature
Off Setpoint
Setpoint 2
Stage 1 Differential (Offset from
Setpoint)
Off
Setpoint 3
On (Offset from
Setpoint)
Stage 2
Differential 2
Setpoint 4
(Offset from
On Off Setpoint)
Differential 3
Stage 3
Off
Interstage On
Time
Delay
Stage 4 Differential 4
Interstage
Time
On
Delay
Interstage
Time
Delay
Time
Figure 7: Reverse Mode
Reverse mode is used for heating applications. The Setpoint 3 is the offset from setpoint that activates
MS1 has one stage. The MS2 has two stages. The Stage 3.
MS4 has four stages. Where desirable, stages may
Differential 3 is the operational range of Stage 3.
overlap or have space between them.
Setpoint 4 is the offset from setpoint that activates
Setpoint is the desired temperature.
Stage 4.
Differential is the operational range of Stage 1.
Differential 4 is the operational range of Stage 4.
Setpoint 2 is the offset from setpoint that activates
Interstage Time Delay is the minimum amount of time
Stage 2.
between two successive stages when multiple stages
Differential 2 is the operational range of Stage 2. are called for in rapid sequence.
6 MS Series Product Bulletin
Deadband Mode
Temperature
Interstage
Time Delay
Cooling
Stage 4 Differential 4
Setpoint 4
Stage 2 Differential 2 (Offset from Stage 2)
Setpoint + (1/2 Setpoint 2)
Setpoint
Setpoint - (1/2 Setpoint 2)
Setpoint 3
Stage 1 Differential
(Offset from Stage 1)
Stage 3 Differential 3
Heating
Interstage
Time Delay
Time
Figure 8: Deadband Mode
Deadband mode is used for applications requiring Setpoint 3 is the offset from the low end of the
cooling and heating. The MS2 has two stages. The deadband that activates Stage 3.
MS4 has four stages. Where desirable, stages may
Differential 3 is the operational range of Stage 3.
overlap or have space between them.
Setpoint 4 is the offset from the high end of the
Setpoint is the desired temperature.
deadband that activates Stage 4.
Differential is the operational range of Stage 1.
Differential 4 is the operational range of Stage 4.
Setpoint 2 is width of the deadband, which is centered
Interstage Time Delay is the minimum amount of time
on setpoint.
between two successive stages when multiple stages
Differential 2 is the operational range of Stage 2. are called for in rapid sequence.
MS Series Product Bulletin 7
Independent Setpoint Mode
Temperature
Interstage
Time Delay
Cooling
Stage 4 Differential 4
Stage 2 Differential 2 Setpoint 4
Setpoint
Stage 1 Differential Setpoint 3
Stage 3 Differential 3
Heating
Interstage
Time Delay
Time
Figure 9: Independent Setpoint Mode
Independent Setpoint mode is used for applications Differential 2 is the operational range of Stage 2.
requiring cooling and heating. The MS2 has
Setpoint 3 is the offset from Setpoint that activates
two stages. The MS4 has four stages. Where
Stage 3.
desirable, stages may overlap or have space between
them. Differential 3 is the operational range of Stage 3.
Setpoint is the desired heating temperature. It is the Setpoint 4 is the offset from Setpoint 2 that activates
basis for the reverse stages. Stage 4.
Differential is the operational range of Stage 1. Differential 4 is the operational range of Stage 4.
Setpoint 2 the desired cooling temperature Interstage Time Delay is the minimum amount of time
programmed by the user. It is the basis for the direct between two successive stages when multiple stages
stages. are called for in rapid sequence.
8 MS Series Product Bulletin
F unction Definitions
The MS Series controls include a variety of Anti-short Cycle Timer, Reverse establishes the
temperature and alarm management functions, which minimum time in minutes between two subsequent On
are listed below. Not all of these functions are cycles of reverse (heating) stages.
available on every model.
Refer to Table 3 for functions and setting ranges for Load Demand
specific models.
Output Status
Temperature Management Anti-short Cycle
Timer
Setpoint is the primary control point programmed by
the user.
Figure 10: Anti-short Cycle Timer
Setpoint 2, Setpoint 3, Setpoint 4 depend on the
mode used. For information on function in each mode, Interstage Time Delay is the minimum amount of time
see Modes of Operation. between two successive stages when multiple stages
Differentials (or hysteresis) establishes the difference are called for in rapid sequence.
between the value at which the output is switched Off Soft Start controls the rate at which the process
and the value at which the output is switched On. For temperature is allowed to approach the setpoint on
further information, see Modes of Operation. power up, both initially and when the binary input is
Example: In Direct (cooling) mode, with the setpoint at configured as remote shutoff. The setting is
40°F, and the differential at 4F°, the compressor is minutes/temperature units, such as minutes/F°.
switched On when the temperature goes above 44°F, Example:
and is turned Off when the temperature decreases to
below 40°F. Process temperature = 20°
Setpoint = 30°
High and Low Setpoint Stops are temperature Soft start = 2 minutes
settings (F or C) that define how high and low the
primary setpoint may be adjusted. Setpoint stops Rate of Increase =
deter unauthorized or accidental overadjustment of Soft start x (setpoint – sensor reading)
setpoint. Process setpoint increases by 1° every two minutes,
Anti-short Cycle Timer, Direct establishes the until the setpoint temperature is reached. To go from
minimum time in minutes between two subsequent On 20° to 30° takes 10 minutes.
cycles of Direct (cooling) stages. Temperature Sensor Offset allows the user to
compensate for temperature differences between
actual and displayed temperature, such as those
experienced when using long sensor leads or when
the location of the sensor results in inaccurate
readings.
Temperature Units allows the user to select either the
Fahrenheit or Celsius temperature scale.
Display Refresh Rate establishes the time delay
(seconds) between updates of the temperature
display.
MS Series Product Bulletin 9
Heating Reset and Cooling Reset are used in Alarm Time Delay establishes the time delay
Deadband mode. The reset is an automatic shift of the (minutes) between reaching an alarm condition
setpoint, based on the temperature at the Auxiliary (high or low temperature) and activating the alarm.
Temperature Sensor (ATS). This function reduces nuisance alarms caused by
transient changes that temporarily exceed alarm
Non-compensated Band establishes the temperature
setpoint temperatures. Conditions that would cause a
range (F or C) over which reset does not take place. temperature alarm are disregarded by the unit during
the first 20 minutes after power up.
Alarm Management
High Temperature Alarm sets the temperature Binary Input
(F or C) relative to setpoint at which the control goes Binary Input Function allows the user to select how
into a high temperature alarm condition. the binary input will activate the stage control contacts.
Example: If setpoint is 40°F and high temperature The user can select to disengage this function or set
alarm is 15F°, the alarm message will be displayed at one of three actions:
or above 55°F. Shutoff and Alarm Signaling - If the binary input
Low Temperature Alarm sets the temperature contact is open for a time longer than that set
(F or C) relative to setpoint at which the control goes through the binary input time delay, the stage
into a low temperature alarm condition. control contacts are switched Off, and an alarm
message (A1) is displayed. On the MS1, the alarm
Example: If setpoint is 40°F and low temperature is also activated.
alarm is -10F°, an alarm message will be displayed at
or below 30°F. Setback - If the binary input contact is open for a
time longer than that set through the binary input
Alarm Differential establishes the difference time delay, the setpoints are shifted by setback.
(F or C) between the temperature at which the alarm Reverse setpoints (heating) decrease. Direct
is activated and the temperature at which the alarm is setpoints (cooling) increase.
deactivated. On the MS1, alarm activation triggers an
external alarm and displays an alarm message. On the Remote Shutoff of the outputs. - If the binary
MS2 and MS4, an alarm message is displayed. input contact is open for a time longer than that set
through the binary input time delay, the stage
Example (cooling): control contacts are switched Off.
Setpoint = 40°F
High Temperature Alarm = 15F° If a set of stage control contacts are used to control an
Alarm Differential = 2F° external alarm, this function should be disabled.
When the room temperature exceeds 40 + 15 = 55°F Binary Input Time Delay establishes the time delay
for a time greater than the alarm time delay setting, (minutes) between binary signal reaching the control
the alarm message is displayed; however, it will reset and control’s response to the binary signal.
after the temperature drops below 40+15-2=53°F. Setback determines the value of the setpoint shift
when the binary input is open and the binary input
function is set at setback.
10 MS Series Product Bulletin
Temperature Reset Temperature Reset Examples
Heating reset, cooling reset, and Non-compensated Heating Reset Example:
Band (NCB) are used only with the MS4. Heating reset Setpoint = 70°
only affects the heating setpoint, and cooling reset Auxiliary Temperature Sensor (ATS) = 42°
only affects the cooling setpoint. These functions NCB = 20°
appear only when the Auxiliary Temperature Sensor Heating Reset = 2°
(ATS) is connected. Step 1
ATS–(setpoint–NCB) = differential
Heating Reset 42 – (70 – 20) = -8
When the ATS reading is lower than the setpoint, and Step 2
the difference exceeds the deadband, temperature differential/heating reset = reset
reset will take place. The setpoint will be lowered. -8/2 = -4
Degrees of reset are equal to: Step 3
[ATS – (setpoint – NCB)] / heating reset setpoint + reset
70 + (-4) = 66
Cooling Reset Setpoint is reset to 66° to save energy.
When the Auxiliary Temperature Sensor (ATS) reading
is higher than the setpoint, and the difference exceeds Cooling Reset Example:
the deadband, temperature reset will take place. The Setpoint = 70°
setpoint will be raised. Degrees of reset are equal to: Auxiliary Temperature Sensor (ATS) = 92°
[ATS – (setpoint + NCB)] / cooling reset NCB = 10°
Cooling Reset = 2°
Non-compensated Band (NCB) Step 1
ATS–(setpoint + NCB) = differential
The temperature range over which reset does not take 92 – (70 + 10) = 12
place.
Step 2
differential/cooling reset = reset
12/2 = 6
Step 3
setpoint + reset
70 + 6 = 76
Setpoint is reset to 76° to save energy.
Heating Reset Cooling Reset
Only Affects Heating Stages Only Affects Cooling Stages
76°
1°
Setpoint Process Setpoint
Heating
70° Temperature 70°
Reset
1°
66° Cooling
Reset
Deadband Deadband
Auxiliary NCB = 20° NCB = 10° Auxiliary
Temperature Temperature
Sensor 42° 50° 70° 70° 80° 92° Sensor
(ATS) (ATS)
MS Series Product Bulletin 11
Heating Reset Cooling Reset
Only Affects Heating Stages Only Affects Cooling Stages
76°
1°
Setpoint Process Setpoint
Heating
70° Temperature 70°
Reset
1°
66° Cooling
Reset
Deadband Deadband
Auxiliary NCB = 20° NCB = 10° Auxiliary
Temperature Temperature
Sensor 42° 50° 70° 70° 80° 92° Sensor
(ATS) (ATS)
Figure 11: Temperature Reset Examples
12 MS Series Product Bulletin
Table 3: Functions and Settings
MS1 MS2 MS4 Setting Setting Range
D = Direct (Cooling)
R = Reverse (Heating)
Mode Selection
B = Deadband (Direct and Reverse)
I = Independent Setpoint (Direct and Reverse)
Setpoint -40 to 99°F (-40 to 70°C)
Differential 1 F°/1 to 9 C°
D, R modes 1 to 40F° (1 to 40C°)
Setpoint 2 B mode 2 to 40F° (2 to 40C°)
I mode Low to High Setpoint Stop
Differential 2 1 to 9F° (1 to 9C°)
Setpoint 3 1 to 40F° (1 to 40C°)
Differential 3 1 to 9F° (1 to 9C°)
Setpoint 4 1 to 40F° (1 to 40C°)
Differential 4 1 to 9F° (1 to 9C°)
Low Setpoint Stop -40° to High Setpoint Stop
High Setpoint Stop Low Setpoint Stop to 99°F (70°C)
Interstage Time Delay 3 to 90 seconds
Anti-short Cycle Timer, Direct 0 to 9 minutes
Anti-short Cycle Timer, Reverse 0 to 9 minutes
Soft Start 0 to 99 minutes/1F° (1C°)
Heating Reset 0 to 6F° (0 to 6C°)
Cooling Reset 0 to 6F° (0 to 6C°)
Non-compensated Band 0 to 20F° (0 to 20C°)
Sensor Offset -20 to +20F° (-20 to +20C°)
Units Used 0 = °C
1 = °F
Display Refresh Rate 1 to 99 seconds
High Temperature Alarm 0 to 50F° (0 to 50C°) above Setpoint
Low Temperature Alarm -50 to 0F° (-50 to 0C°) below Setpoint
Alarm Differential 1 to 9F° (1 to 9C°)
Alarm Time Delay 0 to 99 minutes
Binary Input Function 0 = No binary input
1 = Shutoff and alarm signaling
2 = Setback
3 = Remote shutoff
Setback 0 to 20F° (0 to 20C°)
Binary input Time Delay 0 to 99 minutes
MS Series Product Bulletin 13
M S1 – One Stage Electronic
Temperature Control
The MS1 control is designed for 1-stage temperature Modes of Operation
and alarm control applications. This model uses the
A99B Series temperature sensors. Direct (Cooling)
Alarm
+ Reverse (Heating)
Process Sensor -
Sensor Common
S1 SC A+ A- Temperature Management Settings
Terminal Not Used Setpoint
Internal to Differential (Hysteresis)
Control
V1 V2 C1 Low Setpoint Stop
Refer to Rating Table
Power Stage for more information. High Setpoint Stop
Supply
Anti-short Cycle Timer
Figure 12: MS1 DIN Rail Mount Wiring Soft Start
Temperature Sensor Offset
Table 4: Rating Table
Temperature Units Used
120 240 24
Rating Category Display Refresh Rate
VAC VAC VDC
Horsepower 1/4 1/2 -
Full Load Amperes
Alarm Management Settings
5.8 4.9 -
Locked Rotor Amperes 34.8 29.4 - High Temperature Alarm
Inductive (non-motor) 8 8 8 Low Temperature Alarm
Amperes
Alarm Differential
Pilot Duty VA 275 450 -
Alarm Time Delay
Alarm circuit is 40 VDC, 100 mA maximum.
Alarm requires separate power source. Table 5: Ordering Information
Power supply is 24 VAC. Product Code Description
Number
MS1DR24T-11C MS1 DIN Rail Mount Control;
A99BB-200C sensor included;
shipping weight 0.75 lb (340 g)
14 MS Series Product Bulletin
M S2 – Two Stage Electronic
Temperature Control
The MS2 control is designed for 2-stage temperature Modes of Operation
control applications. These models use the A99B
Direct (Cooling)
Series temperature sensors.
Sensor Common Binary
Reverse (Heating)
Input
Process Binary Stage Deadband (Cooling and Heating)
Sensor Common
Independent Setpoint (Cooling and Heating)
S1 SC D CD C2
Internal to Control Temperature Management Settings
V1 V2 C1 Multiple Setpoints
Terminal Not Used
Power Stage Multiple Differentials (Hysteresis)
Supply
Refer to Rating Table for more information. Low Setpoint Stop
High Setpoint Stop
Figure 13: MS2 DIN Rail Mount Wiring
Interstage Time Delay
Refer to Rating Table for more information.
Anti-short Cycle Timers
Internal to Control
Terminal Not Used
Soft Start
C1
C2 V1 V2 D SC Temperature Sensor Offset
Binary Temperature Units Used
Stage Stage Power Input Process
Supply Sensor Display Refresh Rate
Binary and Sensor Common
Alarm Management Settings
Figure 14: MS2 Panel Mount Wiring
High Temperature Alarm
Table 6: Rating Table Low Temperature Alarm
Rating Category 120 240 24
Alarm Differential
VAC VAC VDC
Alarm Time Delay
Horsepower 1/4 1/2 -
Full Load Amperes 5.8 4.9 -
Binary Input Management Settings
Locked Rotor Amperes 34.8 29.4 -
Inductive (non-motor) Binary Input Function Selection
8 8 8
Amperes Binary Input Time Delay
Pilot Duty VA 275 450 -
Setback
Power supply is 24 VAC.
Table 7: Ordering Information
Product Code Description
Number
MS2DR24T-11C MS2 DIN Rail Mount Control;
A99BB-200C sensor included;
shipping weight 0.79 lb (360 g)
MS2PM24T-11C MS2 Panel Mount Control;
A99BB-200C sensor included;
shipping weight 0.53 lb (240 g)
MS Series Product Bulletin 15
M S4 – Four Stage Electronic
Temperature Control
The MS4 control is designed for 4-stage temperature Modes of Operation
control applications. These controls use the
Johnson Controls/PENN A99B temperature sensor. Direct (Cooling)
Refer to Rating Table for more information. Reverse (Heating)
Deadband (Cooling and Heating)
Internal to Control Independent Setpoint (Cooling and Heating)
C V1 V2 D S2 SC S1
Temperature Management Settings
Stage Stage
Power Multiple Setpoints
Stage Supply Process
Binary Sensor Multiple Differentials (Hysteresis)
Common Input Binary / Sensor Low Setpoint Stop
Auxiliary Temperature Sensor Common
High Setpoint Stop
Figure 15: MS4 Panel Mount Wiring Interstage Time Delay
Anti-short Cycle Timers
Binary Input
Sensor Common Binary and Sensor Common Soft Start
Process Auxiliary Heating Reset
Sensor Temperature Stage
Sensor Cooling Reset
SC D CD S2 C2 Non-compensated Band
Internal to Control Temperature Sensor Offset
V1 V2 C1 C4 C3 Temperature Units Used
Display Refresh Rate
Stage Stage Stage
Power Supply
See Rating Table Alarm Management Settings
Terminal Not Used for more information.
High Temperature Alarm
Figure 16: MS4 DIN Rail Mount Wiring Low Temperature Alarm
Alarm Differential
Table 8: Rating Table Alarm Time Delay
Rating Category 120 240 24
VAC VAC VDC Binary Input Management Settings
Horsepower 1/4 1/2 - Binary Input Function Selection
Full Load Amperes 5.8 4.9 - Binary Input Time Delay
Locked Rotor Amperes 34.8 29.4 - Setback
Inductive (non-motor) 8 8 8
Amperes Table 9: Ordering Information
Pilot Duty VA 275 450 - Product Code Description
Number
Power supply is 24 VAC. Relay outputs must not exceed
MS4DR24T-11C MS4 DIN Rail Mount Control;
20 amperes total connected load.
includes one A99BB-200C sensor;
shipping weight 1.17 lb (530 g)
MS4PM24T-11C MS4 Panel Mount Control;
includes one A99BB-200C sensor;
shipping weight 0.90 lb (410 g)
16 MS Series Product Bulletin
Table 10: Replacement Sensor Ordering Information
Product Code Operating Range Cable
Number
A99BB-200C 6-1/2 ft (2 m) PVC
A99BB-300C 9-3/4 ft (3 m) PVC
A99BB-500C -40 to 212oF (-40 to 100oC) 16-3/8 ft (5 m) PVC
A99BB-600C 19-1/2 ft (6 m) PVC
A99BA-200C 6-1/2 ft (2 m) Shielded
Table 11: Electrical Ratings of Contacts
Rating Category 120 VAC 240 VAC 24 VDC
Horsepower 1/4 1/2 ---
Full Load Amperes 5.8 4.9 ---
Locked Rotor Amperes 34.8 29.4 ---
Inductive (non-motor) Amperes 8 8 8
Pilot Duty VA 275 450 ---
Relay outputs must not exceed 20 amperes total connected load. Open collector transistors on the MS1 alarm circuits have a
maximum rating of 40 VDC, 100 mA. Alarm requires separate power source.
S pecifications
Product MS Series One-and Multi-Stage Electronic Temperature Controls
Power Requirements 3.7 VA @ 24 VAC, 50/60 Hz, Class 2 (20-30 VAC)
Accuracy 1.8F°( 1C°)
Ambient Conditions Operating: +14 to +140°F (-10 to +60°C); 0 to 95 % RH (non-condensing)
Storage: -22 to +176°F (-30 to +80°C); 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
Dimensions (H x W x D) Panel Mount: 1.38 x 2.95 x 2.68 in. (35 x 75 x 68 mm)
DIN Rail: 4.65 x 2.76 x 2.07 in. (118 x 70 x 52.5 mm)
Shipping Weight See ordering information in Tables 5, 7, and 9.
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 shall not be liable
for damages resulting from misapplication or misuse of its products.
www.penncontrols.com
® Johnson Controls and PENN are registered trademarks of Johnson Controls in the
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