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Diagnostics and Fault Finding
5-2
514C Product Manual
DRIVE TRIPS
When a fault occurs the drive will trip and display the cause of the trip on the indicator LEDs
or on the diagnostic (test point 6) for the Thermistor/Microtherm Trip.
The Stall Trip (LED2 on) and the Thermistor/Microtherm Trip are reset by re-applying the
run signal to Terminal 5. The drive will then re-start. (It is necessary to remove then re-apply
the run signal).
An Overcurrent (LED3 on) is not reset by the Run signal re-application as this trip can
indicate that a major fault has occurred. The overcurrent trip is reset by removing then re-
applying the auxiliary supply. Remove the Run signal before removing the auxiliary supply.
Resetting the Stall Trip does not reset the drive’s internal timer that caused the trip. If the
drive is operated in current limit (LED5 illuminated) immediately after a Stall Trip the trip
could re-occur. This protects the drive and the motor from continuous overload operation.
However, it is possible to prevent the stall trip by using the Stall Override (Terminal 15).
DIAGNOSTIC TEST POINT DESCRIPTIONS
Test
Node
Description
Condition
Voltage
1
In15V Supply
Auxiliary Supply On
+15V ±0.15V
2
Ex10V Supply
Auxiliary Supply On
+10V ±0.025V
3
External -10V Supply
Auxiliary Supply On
-10V ±0.025V
4
Internal -15V Supply
Auxiliary Supply On
-15V ±0.15V
5
Drive Enable
Enable
+10V to +24V
Terminal T20
Inhibit
0V
6
Motor Microtherm
Normal
+12V to +15V
/Thermistor
Overtemperature
0V to 2V
7
At Zero Setpoint
At Zero Setpoint
+13V
2V
Above Zero Setpoint 0V
8
At Zero Speed
At Zero Speed
+13V
2V
Above Zero Speed
0V
9
Run
Run
+24V
4V
Terminal T5
Inhibit
0V
10
Health
Healthy
+24V
4V
Terminal T19
Unhealthy
0V
11
Setpoint Ramp Input
100% Forward Speed +10V
Terminal T13
Zero Speed
0V
100% Reverse Speed -10V
12
Positive Trim Setpoint
100% Forward Speed +10V
Terminal T10
Zero Speed
0V
100% Reverse Speed -10V
13
Inverted Setpoint Sum
100% Forward Speed -10V
Terminal T21
Zero Speed
0V
100% Reverse Speed +10V
14
Negative Trim Setpoint 100% Forward Speed -10V
Terminal T17
Zero Speed
0V
100% Reverse Speed +10V