Motrona DS230 Series, Safety Manual

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5.2. Encoder Supply
The unit offers an auxiliary voltage output to power the used encoder resp. sensors.
The power supply of the encoders must be carried out directly from the safety unit
(see chapter
5.2.1 ) or in use of an external power supply via a relay (see chapter 5.2.2 ).
Encoder supply: SinCos inputs [X6] [X7]
Encoder supply: RS422 inputs [X8] [X9]
HTL encoders or sensors must also be connected to the encoder supply of the RS422 inputs
The maximum load of encoder supply is 200 mA each channel (Sensor1 and Sensor2).
Supply SinCos inputs RS422 inputs HTL inputs
Sensor1
[X6:4] [X6:5] [X8:1] [X8:2] [X8:1] [X8:2]
Sensor2
[X7:4] [X7:5] [X9:1] [X9:2] [X9:1] [X9:2]
Examples for the connection of encoders and the encoder supply can be found in chapter 6 .
When powering up the encoder supply, the maximum input current of the safety unit can be
exceeded due to different encoders. In this case, the encoder supply will not be enabled and an error
appears (see chapter
9 ).
In case of such problems or if another voltage level is required, the encoder supply can be switched
via a relay by an external voltage source. The relay activation must essentially be performed by the
encoder supply of safety unit (see chapter
5.2.2 ).

In case of a direct encoder supply it is mandatory to operate the encoders with the
auxiliary voltage from the unit.

An external encoder supply must be done in each case via a relay which is triggered
by the auxiliary voltage of the unit.