EUCHNER CES-A-AEA-04B (Unicode) - Manual (Page 15)

Operating Instructions Safety System CES-A-AEA-02B/CES-A-AEA-04B
15
Setup
LED indicators
STATE LED green State display (multifunction display using flashing modes)
OUT LED yellow Safety circuit closed
DIA LED red - Operating error or
- External fault (fault in the feedback loop) or
- Teach-in process not valid or
- Internal device fault or
- TST input activated (function test active)
Teach-in operation
Before the system forms a function unit, the parameters are set in the evaluation
unit in a teach-in operation (number of connected read heads, assignment of
the actuators to the read heads, with or without automatic start, with or without
feedback loop). In this process, the read heads are activated and the actuator
code is learned.
These configuration parameters are saved in the non-volatile memory in the evalu-
ation unit.
The safety outputs are open during the teach-in operation. The system is in a safe
state.
Important!
Ì
During the teach-in operation the following conditions must be met:
Ì
There must be no state change, e.g. opening a safety guard or closing a
further safety guard or a change in the signal on the terminals for the start
button and the feedback circuit.
Ì
The power supply must not be switched off.
Ì
If these conditions are not met, the evaluation unit switches to the safe fault
state (diagnostics LED illuminates) and signals this operating fault with the
STATE LED by 3 short flashes that are repeated every second. The teach-in
operation must be repeated.
Ì
The number of teach-in operations is unlimited. The evaluation unit can be
re-configured as often as required.
Ì
Actuators cannot be interchanged without a renewed teach-in operation.
Ì
An actuator that has not been subjected to teach-in will not be detected by
the related read head.
Ì
Even if only one new actuator needs to be taught, a complete new teach-in
operation must be carried out as described in the section Setup.
Ì
Do not change DIP switches during operation.
To trigger a teach-in operation, the user must perform the following actions in the
stipulated order:
1. Prepare for teach-in operation
Ì
Switch off power supply U
B
Ì
Fit a jumper between terminals J1 and J2
2. Set required configuration on DIP switches