Johnson Controls MS1 Installation Bulletin

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.
M
ounting
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.
© 1999 Johnson Controls, Inc.
Part No. 24-7664-1806, Rev. A
Code No. LIT-125503
I
NSTALLATION
MS1 One Stage Electronic Control
Pressure Controls Section P
B
ULLETIN
W
iring
!
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.
Sensor
Sensor
Common
V0 S1 SC
Internal
to Control
V1 V2 C1
Power
Stage
Supply
Refer to Rating Table for more information.
Figure 1: MS1 DIN Rail Mount Wiring
FANs 125, 121
Installation Bulletin
Issue Date 1199
Alarm
+
-
A+ A-
➀
Terminal
Not Used
➀
www.johnsoncontrols.com
1