Troubleshooting; What To Do In Case Of Failure; Operating Indicators Of The Leds - Leuze electronic MLC 500 Original Operating Instructions

11

Troubleshooting

11.1

What to do in case of failure?

After switching the safety sensor on, the display elements (see chapter 3.4 "Display elements") assist in
checking the correct functionality and in faultfinding.
In case of failure, you can determine the fault from the LED displays or read a message from the 7-seg-
ment display. With the error message you can determine the cause of the error and initiate measures to
rectify it.
NOTICE
If the safety sensor responds with an error display, you will often be able to eliminate the
cause yourself!
Ä Switch off the machine and leave it switched off.
Ä Analyze and eliminate the cause of the fault using the following table.
Ä If you are unable to rectify the fault, contact the Leuze electronic branch responsible for you
or call the Leuze electronic customer service (see chapter 13 "Service and support").
11.2

Operating indicators of the LEDs

Tab. 11.1: LED indicators at the transmitter - causes and measures
LED State
LED1 OFF
Red
Leuze electronic
Cause
Transmitter without supply
voltage
Device failed
MLC 520 Host/Guest
Measure
Check the power supply unit and the elec-
trical connection. Exchange the power
supply unit, if applicable.
Replace the device.
Troubleshooting
48