Pa-4 Cat-3 Power Chassis Led Functions; Figure 6-1. Pa-4 Chassis Led Locations - adept technology PA-4 Series User Manual

Chapter 6 - Maintenance
6.4

PA-4 CAT-3 Power Chassis LED Functions

The labels on the lower-right corner of the front of the power chassis are for diagnostic
s that can be viewed through the front grill. The functions for these LEDs are shown in
LED
Table 6-1. These
LED
LED # Color Label
1 Yellow HV ON
2 Green LV ON
3 Red SC LS
4 Red K1-K2-F
5 Red IR ER
6 Red Q1DE
50 Adept PA-4 Power Chassis User's Guide, Rev E
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s are typically for Adept Field Service use only.

Figure 6-1. PA-4 Chassis LED Locations

Table 6-1. CAT-3 PA-4 Chassis LED Functions
Function Description
This STATUS LED lights approximately 2.5 seconds after
high-power relays are energized.
This STATUS LED lights when +5 V logic power is present.
This FAULT LED lights when the lower-right mounting screw in
any of the four slots is loose. The fault will reset when the
screws are tightened.
This FAULT LED lights when a failure has occurred during
cyclic testing of the dual-channel safety relays. The LED will
reset when PA-4 power is turned off and on.
This FAULT LED lights when an inrush error occurs while
enabling power. The error may indicate a fault in an amplifier
or control module. The LED will reset when PA-4 power is
turned off and on.
This FAULT LED lights when an over-current error occurs. The
error may be caused by a severe power surge or a fault in an
amplifier or control module. The LED will reset when PA-4
power is turned off and on.