en
Chapter 3
Fig. 2: LED
indicators for
supply voltage and
operational status
Note
62
Product description
3.4
LED indicators
The safety switches have two LEDs that indicate the
status of the supply voltage and the operational status.
Power LED,
green
3.4.1
Indications in the operating mode
When an actuating object enters the enable zone, the
yellow signal LED illuminates either immediately or with
a time delay depending on the duration of the prior
removal of activation.
The output always switches with normal response
times (see section 9.1 on page 86) without an addi-
tional delay, independent of the behavior of the yellow
LED.
• If the actuating element is in the enable zone (cf.
Tab. 1 on page 61) when the supply voltage is
switched on, the yellow signal LED switches with a
time delay of 5 s.
• If the actuating element was at the safe switch off
distance from the sensor for ≥ 2 s (cf. Tab. 1 on
page 61) and is then brought back into the enable
zone, the yellow signal LED switches with a time
delay of 3 s.
© SICK AG • Germany • All rights reserved
Operating instructions
IN4000 Direct
Signal LED,
yellow
8012183/ZWH0/2018-06-05
Subject to change without notice