Cumberland 064-11343, Installation Manual

Page: 105 / 138

Chapter 10: Troubleshooting
3-Slot or 6-Slot Expansion Box
Figure 10-2 PCB422 in an expansion box enclosure
1 Safety network activity LED’s
2 Automation network activity LED’s
3 F1 & F2 Safety network fuses
F3 & F4 Automation network fuses
The 3 or 6-Slot Expansion
Box doesn’t power on Verify if wires are connected from the Panel Mount Power Supply to the Backplane
(PCB-420 and PCB-421)
Verify if wires from the main voltage supply are connected to the Panel Mount
Power Supply
Verify if wires are connected at the right terminals
Measure the voltage between the terminal 24V and GND. The voltage must be at
least 24V
If the problem persists, contact AP/Cumberland or GSI Electronics
The 3 or 6-Slot Expansion
Box does not communi-
cate with the EDGE 2
Controller or other Expan-
sion Box without power
supply Verify if the Expansion Box is powered up
Verify if there are activities on the bus communication by looking at the activities
LED’s on PCB-422
Verify if F1, F2, F3 or F4 on PCB422 are not blown.
Verify if the network link is installed correctly: Terminal A from Expansion Box to x
Slots Expansion Box terminal A, Terminal B from Expansion Box to x Slots Expan-
sion Box terminal B
Verify if the network communication is installed in daisy chain.
890–00687 EDGE 2 105