SICK T4000 Multi - Page 15

4.4.2 Application diagnostic output
DANGER
Hazard due to lack of effectiveness of the protective device
The dangerous state may not be stopped in the event of non-compliance.
Application diagnostic outputs must not be used as safety outputs.
The signal of the application diagnostic output changes as soon as the actuator is
mo
ved into or leaves the response range of the safety switch. In other words, the output
signal changes when the guard is opened and closed.
Table 1: Switching behavior of application diagnostic output
Actuator Application diagnostic output
Actuator not in response range or safety switch
ha
s fault status
OFF
Actuator in response range ON
4.4.3 Preventing unexpected startup
DANGER
H
azard due to unexpected starting of the machine
b
Do not use the reset function of the T4000 Multi transponder safety switch as a
restart interlock.
b
A separate restart interlock must be provided for the machine.
Reset
E
ither manual or automatic reset can be configured for the T4000 Multi transponder
safety switch.
When a protective device has sent a stop command, the stopped state must be main‐
tained until a reset device is activated and the machine can be restarted in a second
step.
The reset brings the protective device back to the monitoring state after it has sent a
stop command. The reset also quits the start-up or restart interlock of a protective
device, so that the machine can be restarted in a second step.
The reset must only be possible, when all safety functions and protective devices are
functional.
The reset of the protective device must not introduce any movement or dangerous situ‐
ations itself. The machine is only permitted to start after the reset once a separate start
command has been sent.
•
Manual resets are performed using a separate, manually operated device, such as
a reset pushbutton.
•
Automatic resets by the protective device are only permitted in special cases, if
one of the following conditions is met:
°
It must not be possible for people to be in the hazardous area without trigger‐
ing the protective device.
°
It must be ensured that no people are in the hazardous area during or after
the reset.
4.4.4 External device monitoring (EDM)
The T4000 Multi transponder safety switch has an external device monitoring function.
PROJECT PLANNING 4
8022726/2019-05-07 | SICK O P E R A T I N G I N S T R U C T I O N S | T4000 Multi
15
Subject to change without notice