EPC
SERVO AMPLIFIER MODULE
Part Number L723888-3xx
ELECTRONIC
Telephone: (231) 929-1660
Oilgear
Fax:
(231) 929-7879
1424 International Dr
Issued May 31, 2018
Web Site:
www.oilgear.com
Traverse City, MI USA 4 9 6 8 6
Bulletin 836260F
5.2.1 Run / Fault LED
The bi-color LED provides diagnostics information about the Run / Fault conditions. The Run
/ Fault LED has several modes. See Table 22 for detail information on high priority faults and
Table 23 for system messages.
Mode
Description
Steady Green
EPC has power (24V supply).
Flashing Green
EPC is communicating with a PC.
Steady Red
High priority faults.
Flashing Red
System messages and during power on for approximately 2 seconds.
Table 18: Run / Fault LED
5.2.2 Valve Current LED
The bi-color LED provides diagnostic information about the Valve Current. The color of
Valve Current LED indicates the direction of the current to the valve. The intensity of the
Valve Current LED indicates the amount of current to the valve.
Color
Direction
Intensity
Current
Green
Positive
Low
Low Green
Positive
High
High Amber
Negative
Low
Low Amber
Negative
High
High
Table 19: Valve Current LED
5.2.3 Feedback LED
The bi-color LED provides diagnostic information about the Feedback. The color of the Feedback
LED indicates the direction of the Feedback. The intensity of the Feedback LED indicates the amount
of Feedback.
Color
Direction
Intensity
Feedback
Green
Positive
Low
Low Green
Positive
High
High Amber
Negative
Low
Low Amber
Negative
High
High
Table 20: Feedback LED
5.2.4 Test Points
Two test points are accessible from the front of the EPC. The first is directly below the USB port,
which is a copy of the signal driving analog output #2. The second, which is toward the bottom,
is a copy of the signal that drives analog output #1. They accept 0.080” test probes.
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