Specifications

I.B. ATS-I005
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Effective 6/00
Table 6.1 Troubleshooting Guide (continued)
Symptom Probable Cause Possible Solution(s)
Changed undervoltage or Pickup upper or lower limit ranges are
overvoltage or underfre- dependent upon dropout setpoints. To
quency or overfrequency prevent misapplication, they are automat-
dropout setpoint and the ically adjusted when overlapping occurs.
pickup setpoint changed also.
Source 1 or Source 2 is not Voltage and/or frequency is not within Verify voltage and/or frequency with multi-meter.
available when it should be. setpoint values. Check programmed setpoint values.
Source 1 or Source 2 is not Do not have contact closure at S1 or S2 Verify contact closure at desired contact
shown connected when it AUX CLOSE contact input. input on J4.
should be on faceplate LEDs.
IQ Transfer is malfunctioning. Replace the unit.
Engine fails to start after S1 or S2 Generator start relay contacts Replace the unit.
TDES times out. not closed.
Incorrect wiring at generator. Check engine wiring/maintenance.
Engine fails to turn off after S1 or S2 Generator start relay contacts Replace the unit.
TDEC times out. not open.
Incorrect wiring at generator. Check engine wiring.
Connected LED not lit for either source. Verify contact closure at desired contact input
on J4. Replace the unit.
Unit will not perform an Engine Test pushbutton was not pressed Press Engine Test pushbutton twice to initiate
Engine Test. twice. test.
Display window is not blank before Use Display Select pushbutton to toggle to
initiating test. Status LED. If a timer is timing down, wait until
it is done.
Engine Test setpoint is set to Disable- Re-program Engine Test setpoint.
(value of “2”).
Number of Generators setpoint is set to 0. Re-program Number of Generators setpoint.
Unit displays “WAIT 0.00” Voltage and/or frequency of generator is Verify voltage and/or frequency with multi-meter.
not within setpoint values. Check programmed setpoint values.
Plant exerciser (PE) failed to Incorrect date or time setting. Verify real time settings for Time/Date.
exercise.
Incorrect setpoint programmed for PE day Re-program PE day and/or time setpoint.
and/or time.
Generator voltage and/or frequency did not Verify voltage and/or frequency with multi-meter.
become available within 30 seconds of Check programmed setpoint values. Check
engine starting. engine maintenance.