Outputs; Delayed Output; Delay Time - SICK RE 4000 Notice D'instructions

Chapter 3

WARNING
66
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Electrical installation
 The sensor channels 1 to 4 can be individually enabled or
disabled. The sensor selector switch is under the yellow front panel
(cf. Fig. 5).
 If a further sensor is to be connected and evaluated in addition to
sensor channel 5 and 6 (e.g. sensor channel 1), then sensor
channel 1 must be set to OFF and the remaining channels (2, 3
and 4) to ON (cf. Fig. 6).
3.3

Outputs

The evaluation unit has 5 relay outputs:
 3 immediately (as per the response times, cf. ready delay time and
release delay in chapter 5 "Technical specifications") switching
safety outputs (N/O contacts) 13/14, 23/24 and 33/34
 1 immediately switching signal output (N/C contact) 41/42
 1 delayed release safety output (N/O contact) 57/58
 Protect all output circuits (cf. Fig. 5 and chapter 5 "Technical
specifications").
 Auxiliary contacts 41/42 are not allowed to be used as safety
contacts.
To ensure that safety is maintained, at least the two safety-relevant
output signal switching devices (relay outputs) 13/14 and 23/24
must be evaluated. The evaluation must be performed separately.
3.3.1

Delayed output

When the evaluation unit is enabled (all sensors in the response
range, enable from external device monitoring [EDM] and reset
button) 57/58 is closed without delay.
On STOP (e.g. a door is opened) the N/O contact 57/58 only opens
after a set time has elapsed.
3.3.2

Delay time

The delay time for the delayed release output (N/O contact) can be
adjusted between 0.6 s and 30 s using the potentiometer. As
supplied the delay time is set to 0.6 s.
The delay time starts after the protective device is opened. The
safety-relevant outputs (13/14, 23/24 and 33/34) can only be
enabled again (closed) when the time set has elapsed. The delay time
cannot be interrupted prematurely.
If the evaluation unit detects that a protective device has closed
again during the delay time, first the time set must have elapsed and
then one of the protective devices connected to the evaluation unit
Operating Instructions
RE 4000
8 010 416/08-10-03