Fig. 13 Cable Length Input; Fig. 14 Route Signal Lines Correctly - Beckhoff EK1914 Operating Manual

Twinsafe bus coupler with 2 fail-safe inputs and 2 fail-safe outputs
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Installation
7.4.6.1
Permitted cable length - inputs
Fig. 13: Cable length input
When connecting a single switching contact via its own continuous cabling (or via a non-metallic sheathed
cable), the maximum permitted cable length is 100 m.
Route the signal cable separately
Route signal cable separately from potential sources of interference. Possible sources of interference are,
for example, motor supply cables or power cables with 230 V
large as possible.
Interference from cables routed in parallel can influence the signal shape of the test pulses and thus cause
diagnostic messages. Possible diagnostic messages are, for example, sensor errors.
The following illustrations show correct and incorrect signal routing. Observe the illustration legend.
Fig. 14: Route signal lines correctly
34
NOTE
D
Version: 2.0.0
. Keep the distance between the cables as
AC
EK1914

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