Johnson Controls MS1 Manual

FANs 125, 121

Pressure Controls Section P

Installation Bulletin

Issue Date 1199

Part No. 24-7664-1806, Rev. A www.johnsoncontrols.com

Code No. LIT-125503

IMPORTANT: All MS1 controls are designed for

use only as operating controls.

Where an operating control

failure would result in personal

injury or loss of property, it is the

responsibility of the installer to

add devices (safety, limit

controls) or systems (alarm,

supervisory systems) that protect

against, or warn of, control

failure.

Refer to the MS Series Multi-Stage Electronic Controls

Product Bulletin, LIT-125502, for necessary

information on operation and performance

specifications for this product.

Mounting

The MS1 control is not position-sensitive but should be

mounted for convenient wiring and adjustment.

To mount the MS1 DIN Rail Mount version, install the

DIN rail where appropriate. Snap the control onto the

rail in position.

Wiring

WARNING: Risk of Electrical Shock.

Disconnect power supply before

making electrical connections to

avoid possible electrical shock or

equipment damage.

Follow these wiring guidelines:

•All wiring must conform to the National Electric

Code and local regulations.

•Make all wiring connections using adequate gauge

copper conductors only. Connectors are rated for

14-22 AWG wiring.

Internal

to Control

Power

Supply

Stage

➀

SCS1

Alarm

V1 V2 C1

Sensor

➀

Sensor

Common

Terminal

Not Used

A+ A-

Refer to Rating Table for more information.

Figure 1: MS1 DIN Rail Mount Wiring

INSTALLATION BULLETIN

MS1 One Stage Electronic Control

2 P—MS1 One Stage Electronic Control Installation Bulletin

Table 1: Control and Sensor Wiring

MS Series

Terminal

P99-1V

Wire Color

HE-6300 or

HE-6310

Terminal

VO Brown PWR

SC Green COM

S1 White OUT

Table 2: Rating Table

Rating Category 120

VAC

240

VAC

VDC

Horsepower 1/4 1/2 -

Full Load Amperes 5.8 4.9 -

Locked Rotor Amperes 34.8 29.4 -

Inductive (non-motor)

Amperes

888

Pilot Duty VA 275 450 -

Alarm circuit is 40 VDC, 100 mA maximum.

Alarm requires separate power source.

Power supply is 24 VAC.

Terminal VO output is 12-17 VDC.

Setting Up the Stage Control

To lock/unlock the unit for programming

Press the Enter, Up, and Down buttons in

sequence and hold until “- - -” is displayed. Hold

for about 10 seconds until the current condition

value is displayed. This toggles the keypad

between locked and unlocked.

To run the self test procedure

IMPORTANT: Disconnect loads before beginning self-test

procedure. Cycle power to resume normal

operation.

Press the Up and Down buttons in sequence,

and hold for 5 seconds.

To select the mode of operation

1. Press and hold the Enter and Down buttons

simultaneously for approximately 7 seconds.

2. Press the Up or Down button until the

desired setting is shown.

1d = Direct 1r = Reverse

3. Press the Enter button to save the new mode

of operation.

To change the setpoint

1. Hold the Enter button down for 3 seconds.

The display will change to show the setpoint.

2. Press the Up or Down button until you reach

the new setpoint.

3. Press the Enter button to save the new

setpoint.

Note: If you do not press the Enter button after selecting the new

setpoint, it is not saved. The control reverts to old setpoint.

To program other values

1. Hold the Enter button down for about

10 seconds. The display will change to HY.

2. Press the Up or Down button until the

desired setting is shown.

3. Press the Enter button. The setting’s current

value is displayed.

4. Press the Up or Down button until the

desired value is shown.

5. Press the Enter button to save the new

value. After 10 seconds of inactivity, the

display will return to its normal function.

Note: If you do not press the Enter button after selecting the new

value, it is not saved. The control reverts to the old value.

P—MS1 One Stage Electronic Control Installation Bulletin 3

Table 3: Functions and Settings

Mode 1d = Direct 1r = Reverse 1d

Setting Description Setting Range Default

SI Setpoint d, r, relay cut-off point 0 to 99 —

HY Differential (Hysteresis) Difference relative to setpoint or offset at

which the load is switched On or Off

1 to 9 5

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,

Direct

Time delay between equipment On cycles for

direct stages

0 to 9 minutes 2

CH Anti-short Cycle Timer,

Reverse

Time delay between equipment On cycles for

reverse stages

0 to 9 minutes 0

rt Soft Start Rate at which condition approaches setpoint 0 to 99 minutes/(% or psi) 10

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 which alarm output is switched Off

1 to 9 5

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

Repair and Replacement

Field repair must not be made. In case of defective or

improperly functioning control, contact your nearest

authorized Johnson Controls/PENN distributor. When

requesting a replacement, refer to the model number

found on the data plate of the control.

Canadian 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.

FCC 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.

4 P—MS1 One Stage Electronic Control Installation Bulletin

Fault/Alarm Codes

Table 4: 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.

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.

Ordering Information

Table 5: 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 6: Ordering Information

Item Code Description

MS1DR24V-11C MS1 DIN Rail 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 psi

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.

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