EUCHNER CES-AH-C03-AH-SM (Unicode) - Manual (Page 9)

Operating Instructions Safety Switch CES-AH-C03-AH-SM
9
Automatic restart and start button
Pay attention to the notes for the following applications:
Automatic start, with a jumper (+24 V are continuously present at the START
input)
¨ The device restarts automatically after faults.
Manual start (start via a start button)
¨ Prior to each restart the start button must be pressed
Ì A sticking start button (fault due to welding etc.) is not detected by the device
and results in an automatic restart.
Attention!
Danger due to automatic start / restart.
An automatic start / restart can occur:
Ì On closing the safety guard
Ì On switching on the power supply
Ì On automatic restart after the detection of a fault
Ì Check carefully which start mode is suitable for your application.
Ì Check whether additional measures are necessary to prevent an automatic
restart.
Safety in case of faults
Ì The operating voltage U
B
is reverse polarity protected.
Ì The contacts +LA/LA and +LB/LB are short circuit-proof and protected against
reverse polarization.
Ì To prevent switching on of the load connected in the case of a short circuit
between LA or LB and the operating voltage
U
B, the cables must be laid rigidly
and with protection.
Fuse protection for power supply
The power supply must be provided with fuse protection depending on the current
required for the outputs. If both outputs (LA and LB) are used, protect with max.
10 A fuse.