General Information 1-13
MN1269
Fault Indicators
Each servo control card contains four (4) red fault indicators located on the top left side of
the unit (for location see Figure 1-4). Each fault is a latch type function (unless in
Foldback Mode) where the servo control card will not function when tripped. A reset must
be done in order to restart the servo control. Refer to Section 4 – Troubleshooting for
detailed information on solving fault problems.
Voltage Error (VE)
The purpose of the (VE) indicator is to identify either excess bus voltage detected by the
overvoltage protector or insufficient logic voltage at the servo control.
Excess Current/Overtemperature (EC)
The purpose of the (EC) indicator is to identify either excess RMS current or over
temperature condition.
Ground Fault (GF)
The purpose of the (GF) indicator is to identify if current is flowing at or leaking to ground
potential in either the motor or servo control.
Surge Current (SC)
The purpose of the (SC) indicator is to identify a peak current draw, which exceeds the
rating of the servo control.
Status Indicators
The logic power supply on the chassis has four (4) green status indicators (see Figure
1-5) which when lit verify the presence of the +15 VDC, –15 VDC, AC for fans and logic,
and Bus voltage (DC).
Figure 1-5 Status Indicators
Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097
(973) 335-1007 • Toll Free: (800) 922-1103 • Fax: (973) 335-1661
www.servosystems.com
