EUCHNER CES-AR-AES-12 - Manual (Page 10)

Operating Instructions AR Evaluation Unit CES-AR-AES-12
10
Starting behavior
The AR evaluation unit can be placed in operation either using the autostart mode
or by starting it manually.
Important!
If the configuration for the starting behavior is changed during operation (e.g.
jumper removed), this change will be detected by the unit. The AR evaluation unit
assumes the fault state as soon as the next request to close the safety contacts
is received (see section Troubleshooting).
Connection for monitored, manual start
For a monitored, manual start, a start button is connected to terminal S. The start
button is supplied with a voltage of 24 V DC. The terminal +UB can be used for this
purpose. A sticking start button, for example, will be detected by the monitoring
function the next time the system is powered up.
The safety contacts close after max. 600 ms when the start button is pressed and
then released again (falling edge) and if the actuators for all the safety switches
connected are within the operating distance.
CES-AR-AES
UB S
Fig. 4: Monitored, manual start
Important!
The start button is only allowed to be pressed approx. 8 s after power on. If the
start button is pressed earlier, the unit will switch to the fault state and the LED
DIA illuminates. The LED STATE flashes
(see section Troubleshooting) .
Connection for automatic start
Warning!
The safety contacts close immediately if all safety switches signal a safe state
and the feedback loop is closed.
CES-AR-AES
Y1 S
Fig. 5: Automatic start