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Application and Function
33003405 07/2007 27
Safety-Related
Relay Outputs
The XPSMF2DO801 safety remote output module has eight relay outputs. Each
relay output has its own LED to indicate the status of the output.
Each output of the module is fitted with two safety relays in diversity with positively
guided contacts and one standard type relay. Internal fuses are used to limit the
switching current of the output contacts to 60% (3.15 A) of the maximum admissible
value (according to VDE 0116, En 298). The contact outputs can be used for safety
shutdowns. For DC switching the contact circuit must be additionally equipped with
an external fuse adapted to the maximum admissible current.
An output is in a safe state when it is de-energized. If a fault occurs, all outputs are
switched off.
If the module has a fault all outputs are switched off. In the event of a fault at
Ethernet communication the concerning output is set to the initial value. How the
actuators respond in such a case should be taken into account.
Faults in one or more channels as well as a fault on the module are indicated by the
FAULT LED on the front plate of the remote output module.
The relay outputs are connected to the following terminals:
Terminal No. Designation Function (relay output)
1 DO1 contact 1, terminal A
2 contact 1, terminal B
3 DO2 contact 2, terminal A
4 contact 2, terminal B
5 DO3 contact 3, terminal A
6 contact 3, terminal B
7 DO4 contact 4, terminal A
8 contact 4, terminal B
9 DO5 contact 5, terminal A
10 contact 5, terminal B
11 DO6 contact 6, terminal A
12 contact 6, terminal B
13 DO7 contact 7, terminal A
14 contact 7, terminal B
15 DO8 contact 8, terminal A
16 contact 8, terminal B