Mitsubishi Electronics -QS90SR2SP-EX ユーザーズマニュアル
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6.3 Extension Safety Relay Module
6.3.1 Error check method with LED
6.3.1 Error check method with LED
6
TROUBLESHOOTING
6.3
Extension Safety Relay Module
6.3.1
Error check method with LED
Table 6.5 shows description, cause investigation, and corrective action of errors
depending on LED display on the module.
depending on LED display on the module.
: ON, : Flash, : OFF, *: ON or OFF
* 1: The status that start-up processing has been performed to the module
Table 6.5 Error handling of safety part with LED
LED signal
Cause
Corrective action
PW
ERR.
Z
K1
K0
X1
X0
Normal (before start-up)
-
Normal (started up)
-
*
*
The module power supply is not normally
supplied.
supplied.
•Check if the power supply is normally
supplied.
•Check between the power supplies for
short.
•In case of input N type, check between
the dual inputs for short.
*
*
Contact welding of K0 and K1 relays
•Replace the module.
K0 and K1 relays do not turn ON.
*1
Safety system 1 does not turn ON.
*1
Safety system 2 does not turn ON.
*1
Safety system 1 does not turn OFF.
*1
Safety system 2 does not turn OFF.
*1
*
*
*
*
*
*
•System error occurred.
•The safety power supply is not normally
•The safety power supply is not normally
supplied.
•Check if the power supply is normally
supplied.
•Check between the power supplies for
short.