Twin City Electronically Commutated Motors - IM-4055 - Manual (Page 3)

3 Twin City IM 4055
control range available for a given fan/motor combina-
tion, the motor mounted dial must be turned all the way
in the CW direction or to the maximum RPM available.
Figure 1 below is a detailed wiring diagram for the Re-
mote Mounted Dial option.
CAUTION: Always disconnect power before inspection or
maintenance. Although motor may be off and not running
when a 0-1.9V DC signal is present, high voltage will still
be present at the motor.
Figure 1. Remote Mounted Dial Wiring Diagram
24 VAC
REMOTE DIAL (TCF)
2
3
1
120 VAC
YELLOW BLUE
COM
0 - 10 V
24 VAC
BLACK
WHITE
GROUND
SIGNAL
CONTROL
LEADS
POWER
LEADS
MOTOR
BLACK
WHITE
RED
DISCONNECT
BOX
GROUND
BLACK
WHITE
FACTORY PROVIDED
FIELD INSTALLED
Maintenance
Keep motor dry and free of dirt, dust and debris.
Troubleshooting
Remote Dial does not vary the motor speed
•
Verify that correct connections are made (refer to
page 2)
•
Make sure that the connections are solid
•
Check control input voltage at connection (inside
transformer box)
•
Make sure that the dial on the motor is opened CW