Troubleshooting - SICK IN4000 Direct Manual Del Usuario

en
Chapter 7
Tab. 8: Trouble-
shooting for the
IN4000 Direct
(LED indicators
see 3.4 on
page 62)
80
Fault diagnosis
7.2

Troubleshooting

Problem
No LED
indication
• Power
LED does
not flash.
• Sensor
does not
switch.
• Power
LED is
off.
• Signal
LED
flashes.
© SICK AG • Germany • All rights reserved
Possible cause
No supply voltage
• Undervoltage
• Overvoltage
Internal or
external fault
Operating instructions
IN4000 Direct
Rectification of the
error
⋅ Switch the voltage
supply on.
⋅ Check supply
voltage (see 9.1
"Data sheet" on
page 83).
⋅ Undamp/damp
⋅ Switch the voltage
supply off and
back on again.
⋅ Test the
connections and
their wiring.
⋅ Rectify possible
cross-circuits.
⋅ Test the
components
connected, e.g.
the PLC.
⋅ Replace the
device.
8012183/ZWH0/2018-06-05
Subject to change without notice