CommandPro
®
General Purpose & Safety Applications
User Manual
21
9M02-9028-A031-EN
Rev 4
Figure 5: Receiver with NEMA 4 Enclosure
7.2
Receiver Testing
7.2.1 Receiver LEDs
Refer to Figure 5 for the locations of the decoder diagnostic LEDs inside the receiver enclosure.
LED Indication
Possible Cause
POWER LED lit
Receiver operating voltage is present
SIGNAL LED flashes rapidly
Signal is being received
SIGNAL LED flashes dimly
Receiver is scanning (FCFS only)
Output LED On
Control function activated
K1 through K8
Corresponding relays are energized