EUCHNER CES-AR-C01-AH-SA (Unicode) - Manual (Page 21)

Operating Instructions Safety Switch CES-AR-C01-AH-SA
21
Teach-in function for series connection
It is recommended not to teach in the actuators in the series connection but to
teach them in one by one instead. Teach-in in a series connection works analogously
to individual operation in principle. All switches in the chain can be taught in at the
same time. The prerequisite is that the switch chain functions without problems
and the following steps are followed. Further steps might have to be observed
for mixed switch chains (e.g. for chains with CES and safety switches with guard
locking). Observe the operating instructions for the other devices in the chain for
this purpose.
Proceed as follows:
1. Install the switches and actuators and connect them completely (see Figure
5 or Figure 6, for example)
2. Close all safety doors in the chain.
3. Switch on the power supply.
¨ The green LED STATE flashes at approx. 1 Hz on the safety switches and the
associated actuators are taught in. This happens for approx. 1 minute. Do not
switch off during this time and do not actuate reset. The teach-in operation has
ended when all LEDs on the safety switches are off.
4. Actuate the reset for at least 3 s (24 V on RST).
¨ The system restarts and then functions in normal operation.
Replacing and teaching-in device
Work on the wiring (e.g. during device replacement) should generally be performed
in a de-energized state. On certain systems, it is nevertheless necessary to perform
this work and subsequent teach-in during ongoing operation.
Input RST must be connected as shown in Figure 5 to permit this.
Proceed as follows:
1. Open the safety door on which the switch or actuator is to be replaced.
2. Install the new switch or actuator and connect it completely.
3. Close all safety doors in the chain.
4. Actuate the reset for at least 3 s (24 V on RST).
¨ On the safety switch that is positioned at a new actuator, the green LED flashes
at approx. 1 Hz and the actuator is taught-in. This takes approx. 1 minute – do
not switch off during this time and do not actuate reset. The teach-in operation
has ended when all LEDs on the device are off.
5. Actuate the reset for at least 3 s (24 V on RST).
¨ The system restarts and then continues to function in normal operation.