Carrier PC211 specifications Cutler-Hammer Solid-State Starter Troubleshooting Guide

Table 13 — Cutler-Hammer ® Solid-State Starter Troubleshooting Guide (Continued)

Problem	Probable Cause	Area of Correction
Motor accelerates too	Current limit is too high.	Decrease current limit setting counter-
quickly.		clockwise.
	Improper current feedback.	Check current calibrator for proper resis-
		tance value.
	Pulse start setting is too long.	Decrease pulse start time counterclock-
		wise.
	Broken current feedback transformer wire.	Check for a broken current feedback
		transformer wire.
Current limit adjustment	Improper current feedback.	Check current calibrator for proper resis-
has no effect during		tance value.
acceleration.
Starter or motor is noisy	Single phasing due to open phase.	Check wiring and overload heater coils.
or vibrates when start-
	Single phasing or unbalanced current due	Check gate lead wiring to SCRs.
ing.
	to non-firing SCR.
	Defective motor.	Check motor for shorts, opens, and
		grounds.
Mechanical shock to	Current increases too quickly.	Decrease starting current counterclock-
machine.		wise. If necessary, increase ramp time
		clockwise.
End of limit contact	Starter is in current limit.	Perform SCR full voltage test.
does not close.
Current trip contact	Improper current feedback.	Check current calibrator for proper resis-
does not close when		tance value.
current goes above the
trip setting.
Current trip contact	Improper current feedback.	Check current calibrator for proper resis-
closes when current is		tance value.
below trip setting.
Motor current, voltage,	Power saver is misadjusted.	Turn power saver adjustment CCW until
and speed oscillate.		oscillations cease.