
Operating Instructions
Non-Contact Safety System CES-A-ABA-01/CES-A-ABA-01B
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(translation of the original operating instructions) 071873-15-07/15
9.3. Functional check
After installation and any fault, the safety function must be fully checked. Proceed as follows:
WARNING
Danger of fatal injury as a result of faults in installation and functional check.
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Before carrying out the functional check, make sure that there are no persons in the danger area.
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Observe the valid accident prevention regulations.
1. Switch on operating voltage.
-The safety switch carries out a self-test.
The green STATE LED flashes up to three times.
The STATE LED then illuminates continuously.
The OUT and ERROR LEDs do not light up.
2. Close all safety guards.
-The machine must not start automatically.
-The green STATE LED and the yellow OUT LED light up continuously.
3. Enable operation in the control system.
4. Open the safety guard.
-The machine must switch off and it must not be possible to start it as long as the safety guard is open.
-The green STATE LED illuminates continuously; the OUT and ERROR LEDs do not illuminate.
Repeat steps 2 … 4 separately for each safety guard.
9.3.1. Self-test with test input TST
On electromechanical safety switches or magnetic switches, the function test can be performed by cyclically opening the
safety guard.
From category 2 according to EN ISO 13849-1 and in accordance with EN 60204-1 : 1997 (chapter 9.4.2.4), a function
test must be performed on the entire safety system on start-up or after defined intervals.
Testing of the internal function of the unit is not necessary because the device monitors itself in real time. Welding of an
output contact (relay output) is detected by the device at the latest the next time the safety guard is opened. A short circuit
in the output cable is not detected by the device.
In addition, the entire safety circuit can be tested without opening the safety guard. For this purpose, opening of the safety
guard can be simulated by applying 24 V DC to the test input TST.
The safety outputs are switched off, enabling testing of the complete safety circuit. The diagnostic output ERR on the eval-
uation unit is also set HIGH as a monitoring function.
When test input TST is reset, the evaluation unit resets the diagnostic output ERR to LOW, the red LED switches off and
normal operation is continued.
Important!
After the self-test, the test input TST must be connected to 0 V again or must be disconnected.