EUCHNER MGB-L0-xxxAPx-xxx - Manual (Page 21)

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Operating Instructions MGB-L0...AR.-... and MGB-L0...AP.-...
10.6 Notes on operation with control systems
General notes
Do not use a control system with pulsing or switch off the pulsing function
in your control system. The device generates its own pulsed signal for short
circuit monitoring on the output lines FO1A/FO1B. A downstream control
system must tolerate these pulses, which may have a length of up to 1 ms.
The pulses are also present when the safety outputs are switched off (only on FO1A).
Depending on the inertia of the connected device (control system, relay, etc.), this
can lead to short switching processes (only on configuration as AR device).
There must also not be any pulsed signals on the inputs (FI1A/FI1B). The MGB is
connected statically to 24 V DC (connection comparable with light barriers, OSSD)
Do not use a control system with pulsing or switch off the pulsing function in
your control system. The device generates its own pulsed signal for short cir-
cuit monitoring on the output lines FO1A/FO1B. A downstream control system
must tolerate these pulses, which may have a length of up to approx. 300µs.
The pulses are not present when the safety outputs are switched off.
The inputs on an evaluation unit connected must be positive-switching, as the two
outputs on the safety switch deliver a level of +24 V in the switched-on state.
Note:
Due to the fact that the short circuit monitoring is undertaken by the device
itself, the Performance Level in accordance with EN 13849 is not reduced if the
control system pulsing is switched off.
AR
AP