ABB Robotics OmniCore C90XT Product Manual page 417

Troubleshooting flowchart
Repair
Measure 24V
connection
DC input voltage
DC < 24V
Check connection
Connection to power supply
not ok
Connection ok
CRB 15000
controller
No
Troubleshoot power supply
xx1800002356
Troubleshooting procedure
The troubleshooting table is supposed to be used as a detailed instruction together
with the troubleshooting flowchart.
1
Product manual - OmniCore C90XT
3HAC073706-001 Revision: E
7.3.12 Troubleshooting the robot signal exchange proxy
Troubleshooting robot
signal exchange proxy
Turn off power until all LED (except MS) are off,
then turn on power and wait 1 min
Not lit
Check LED MS
Green
DC = 24V
Measure 24V DC
output voltage
DC = 24V
Yes Check LEDs:
AS1, AS2, ES1, ES2
Lit
No problem found in robot
signal exchange proxy
Test
Check the indicator LED MS.
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Flashing red/green
DC < 24V
Repair connection
Not lit
Connection
not ok
Check connector
X14, X15
Connection ok
Resistance
Check external safety
accessories
No resistance
Low
impedance
Measure AC OK signal
High impedance
Troubleshoot power unit
Action
If the LED_MS is:
• Green, proceed with step 5.
• Flashing red/green, a firmware upgrade error
has occurred. This is not supposed to happen
during runtime mode, proceed with step 10.
• OFF, either the robot signal exchange proxy
is faulty or it does not have sufficient input
voltage. Proceed with step 2.
7 Troubleshooting
Continued
Replace robot
signal exchange
proxy
Troubleshoot
external
equipment
Continues on next page
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