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Joint 1 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Joint 2 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Joint 3 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Joint 4 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Joint 5 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Tool CRC check failure on
primary bus
Serial communication problem
with tool or secondary bus
node
Replace Tool mounting
bracket
CRC Check failure on primary
bus
Most likely an interference on
the communication bus
a) Check green 2-wire
connectors and wires in
joints, b) If the error
reappears contact your
local service provider for
assistance.
Loose gearbox or bad encoder
mounting
Mechanical problem in gear
related to encoder mounting
AD-Converter hit low limit
EMC issue external or
electronics internal
a) Check grounding and
shielding for EMC
problems. B) Replace Item
Powerbus voltage drop
detected.
Error on 48V powerbus to
robot arm
Check 48V output from
PSU. Check current-
distributor PCB.
Replacement of 48V PSU or
current-distributor is
necessary
Secondary RS485 bus is down
Bus for: Teach Pendant,
Processor A and Processor B
on the Safety Control Board.
Check TCP/IP-12V cable to
Teach Pendant
Electrical error control box
Remove all external
connections to I/O-
interface of Safety Control
Board. Check for short
circuit. Argument of error
code specifies in detail
what causes the error.
Voltage detected at 24V rail
before startup
Voltage present at unpowered
robot
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