Wiring the FM 352
5.5 Wiring the front connector
FM 352 electronic cam controller
34 Operating Instructions, 05/2011, A5E01071724-03
5.5 Wiring the front connector
Connecting cables
● The cables for digital IO must be shielded if they exceed a certain lengths:
– Digital inputs: cable length > 32 m
– Digital outputs: cable length > 100 m
● The encoder cables must be shielded.
● The shields of the encoder cables must be terminated at the shielding / ground conductor
busbar, and on the IO connectors.
● Always use twisted-pair cables for the A/DAT, /A / /DAT, B/CLI, /B / /CLI, CLS, /CLS and
N, and /N signals of the incremental encoder.
● Use flexible connecting cables with a conductor cross-section of 0.25 to 1.5 mm
2
● Wire end ferrules are not required. However, should you prefer to use these, you can
crimp and wire two wires with a conductor cross-section of 0.25 to 0.75 mm
2
using a
single ferrule without insulation collar (DIN 46228, design A, short version).
Note
If you connect measuring probes or proximity switches, you must use shielded cables to
achieve optimum noise immunity.
Note on wiring 24 V DC
CAUTION
The module can be damaged.
If you reverse the polarity of the encoder supply, the module will be destroyed and must be
replaced!
Verify the correct polarity of the encoder supply (1L+, 1M)
Tools required
3.5-mm screwdriver or power screwdriver
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