Connecting The Control Circuits; Special Features Of The Safety-Related Semiconductor Outputs (Ossd); Reset Terminal; Auxiliary Terminal - ASO Safety Solutions ELMON rail 39-726 Manuel D'utilisation

ELMON rail 39-726
Safety Relay

9.4 Connecting the control circuits

Connect the control circuit that is to be monitored to terminals 14 or 24 respectively. The cables are to be laid
so that it is impossible to bridge the safety contacts, e.g. by a short circuit between the two connection wires.
The connection for the control circuits is permitted only for switching low voltages. The control circuits are
dependent on the rated current to protect with an appropriate fuse or the rated current to the control circuits
must be limited by other measures to the maximum value.

9.5 Special features of the safety-related semiconductor outputs (OSSD)

The output's ability to turn off is also constantly tested while the safety outputs are activated. For this
purpose, the semiconductor output switch is switched off several times per second for less than 1 ms and
the response at the output observed.
These interruptions must not be evaluated by the higher-order controller as safety requests.
If the voltage does not return to 0 V, the device is permanently deactivated and can only be reset by switching
off and on the voltage supply.
This permanent deactivation also occurs if, depending on the type of activation, the voltage cannot break
down (e.g. by means of capacitive elements).
A primary controller should only evaluate the states of the output signal if the level is sustained for 5 ms. This
prevents pulses generated during a self-test while in the switched-on state and the testing of the switch-on
procedure from erroneously being processed as control information.

9.6 Reset terminal

For automatic reset / restart terminals S11 S12 are to be bridged (factory setting: manual reset, S11 S12
unbridged) and reset push-button is to be connected to terminals Z1 Z2.

9.7 Auxiliary terminal

The auxiliary terminals serve only as auxiliary terminals (signalling, display, etc.) and must not perform any
safety functions.

10. Commissioning and functional test

The plant / machine must be tested for proper function after all of the electrical connections have been
established and the supply voltage has been turned on.
Upon successful commissioning, a voltage is output at the safety outputs (corresponds to the supply voltage).
Actuation of the sensor causes a reaction by the safety outputs and by the auxiliary outputs according to the
DIP switch configuration.
The safety system must be professionally inspected at appropriate intervals. The inspection must be
documented in such a way as to be comprehensible at all times. The requirements of the plant/machine
manufacturer are to be taken into account and followed.
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