Rectifying the fault
Leuze electronic
MC3x
42
10
Rectifying the fault
10.1 What to do in case of failure?
After switching on the Safety Relay, display elements (see chapter 3.1 „Device overview“) assist in
checking the proper function and troubleshooting.
In case of failure, use the LEDs to recognize the fault and initiate rectification measures.
10.2 Rectifying the fault
NOTICE
If the MSI-MC3x does not switch on with closed guard, a component may be defective.
Switch off the machine and protect it against being restarted.
Analyze and eliminate the cause of the fault using the following table.
If you are unable to rectify the fault, contact the Leuze branch responsible for you or call the Leuze
electronic Hotline (see chapter 12 „Service and support“).
Power sup
-
ply unit
Display
OSSDs
Cause
Measure
On
“Supply” LED on
K1, K2 off
Guard open
Close the guard.
On
“Supply” LED on
K1, K2 off
Sensor incorrectly
aligned
Correct the sensor again.
On
“Supply” LED on
K1, K2 off
Actuator missing
Mount the corresponding actua
-
tor.
On
“Supply” LED on
K1, K2 off
Sensor defective
Replace the respective sensor.
On
“Supply” LED off
K1, K2 off
Fuse U
b
defective
Replace fuse U
b
.
On
“Supply” LED off
K1, K2 off
MSI-MC310 defec
-
tive
Replace the Safety Relay.
Off
“Supply” LED off
K1, K2 off
No operating volt
-
age
Switch on the power supply unit.
???
“Supply” LED off
K1, K2 off
Power supply unit
defective
Replace the power supply unit.
On
“Supply” LED on
K1, K2 on
External fuse in
switch-off circuit
defective
Replace the external fuse.
On
“Supply” LED off
K1, K2 off
External short circuit
U
b
Rectify the short circuit and
replace the fuse.
On
“Supply” LED on
K1, K2 on
External cross con
-
nection in the
switch-off circuit
Rectify the cross connection and
replace the fuse.
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