McQuay TSC User Manual

88 OM Centrif Micro ΙΙ-5
Phase Order
Description
The line phasing parameter sets the phase sensitivity of the starter. This can be used to protect the
motor from a possible change in the incoming phase sequence. If the incoming phase sequence
does not match the set phase rotation, the starter will display phs err while stopped and will fault if
a start is attempted.
Values
The line phasing can be set to:
• INS - will run with either phase sequence
• ABC - will only run with ABC phase sequence
• CBA - will only run with CBA phase sequence
Default
The default value for the phase sensitivity parameter is INS.
Troubleshooting
The following troubleshooting charts can be used to help solve some of the more common
problems that occur.
Table 40, Motor will not start, no output to motor.
Display Cause Solution
Fault Displayed. Shown on display. See fault code table.
Watchdog LED on. CPU card problem. Consult McQuayService.
Display is blank.
Control voltage is absent.
FU1 on power card.
Ribbon Cables.
Check for proper control voltage.
Replace FU1.
Check ribbon cables.
Stopped
Control Devices
Display buttons disabled.
Check control devices
Enable display buttons.
No line
Missing at least one phase of main
power
Check power system.
Table 41, Motor rotates but does not reach full speed.
Display Cause Solution
Fault displayed. Shown on display See fault code table.
Accel or Running
Mechanical problems.
Abnormally low line voltage.
Check for load binding. Check motor.
Fix line voltage problem
Table 42, Deceleration profile not operating correctly.
Display Cause Solution
Motor stops too quickly.
Time setting. or improper level
setting.
Contact McQuayService
Time seems correct but motor
surges at start of decel.
Decel level 1
Contact McQuayService
Time seems correct but motor
stops before cycle complete.
Decel level 2.
TruTorque DCL End Torque
Contact McQuayService
Time seems correct but water
hammer occurs at end of cycle.
Decel level 2.
TruTorque DCL End Torque
Contact McQuayService
Table 43, Motor stops while running.
Display Cause Solution
Fault displayed. Shown on display. See fault code table.
Display is blank.
Control voltage is absent.
FU1 on power card
Check control wiring and voltage.
Replace fuse.
Stopped Control devices. Check control system.

McQuay TSC Specifications

General

Brand	McQuay
Model	TSC
Category	Controller
Language	English