SEW-Eurodrive MOVISAFE DCS21B

Manual – MOVIDRIVE® MDX61B Safety Module Option MOVISAFE® DCS..B
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5
Connecting digital inputs DI1 to DI8
Installation
5.8.3 Single-channel sensor, monitored
When using a single-channel sensor with pulsing, the sensor must be connected to
pulse output P1 or P2. The pulse cycle must then be assigned on the DCS..B option.
The following faults are detected when using a single-channel sensor with pulsing:
• Short circuit against the DC 24 V supply voltage
• Short circuit against DC 0 V
• Cable interruption (power interruption is a safe state!)
However, a short circuit in the cable between the two sensor connections is not
detected. A short circuit between P2 and DI1 is not detected either.
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P1
P2
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DC 24 V
P2
P1
X81
DC 0 V
1
6
2
3
4
5
7
8
9
10
INFORMATION
A category 2 structure according to EN ISO 13849-1 can be achieved if the short
circuit between DI1 and P1, and the short circuit between the sensor connections can
be excluded. Faults can be excluded in accordance with EN ISO 13849-2, table D8.