Nachi RMU20-20 Instruction Manual page 181

Error code
Error
Top: Controller
Bottom: RMU
Internal error E1106
Safety output 1 E20-E22
Error code
Error
Top: Controller
Bottom: RMU
Internal error E1106
Safety output E23-E25
2-4
Error code
Error
Top: Controller
Bottom: RMU
Internal error E1106
Power source E26
voltage
Error code
Error
Top: Controller
Bottom: RMU
Internal error E1106
Input signal E27
Assist code
SUB1 SUB 2 SUB 3
20 - - This error occurs if the back
check of the safety output 1
is not inputted normally.
21-22 - - This error occurs if the
output diagnostic for the
safety output 1 is not finished
normally.
Assist code
SUB1 SUB 2 SUB 3
24 5 - This error occurs if the back
check of the safety output 2
is not inputted normally.
21 - This error occurs if the back
check of the safety output 3
is not inputted normally.
37 - This error occurs if the back
check of the safety output 4
is not inputted normally.
23,25 1-4 - This error occurs if the
6-9
output diagnostic for the
safety output 2 is not finished
normally.
17-20 - This error occurs if the
22-25
output diagnostic for the
safety output 3 is not finished
normally.
33-36 - This error occurs if the
38-41
output diagnostic for the
safety output 3 is not finished
normally.
Assist code
SUB1 SUB 2 SUB 3
26 - - This error occurs if the power
source voltage in the RMU is
not normal.
Assist code
SUB1 SUB 2 SUB 3
27 1-26 - This error occurs if the
diagnostic of the safety input
signal failed.
32-39 - This error occurs if the
diagnostic of the monitor
input signal failed.
Description of trouble
Description of trouble
Description of trouble
Description of trouble
7.2Troubleshooting
Remedy
Check if the wiring of the
safety output 1 is normally
connected.
Turn OFF and ON the
controller power.
Replace the RMU.
Remedy
Check if the wiring of the
safety output 2-4 is
normally connected.
Turn OFF and ON the
controller power.
Replace the RMU.
Remedy
Turn OFF and ON the
controller power.
Replace the RMU.
Remedy
Check the input signal
wiring.
Turn OFF and ON the
controller power.
Replace the RMU.
7-13