Hardware reference guide

I/O Modules
492
35013379 11/2011
External Wiring Recommendations
1. The user supplies the current and voltage sources (installation and calibration of
fuses are at the discretion of the user).
2. Use shielded signal cable. In noisy environnements, twisted shielded cable is
recommended.
3. Shielded cables should be connected to the PLC’s ground.
4. A Shield Bar (STB XSP 3000 and STB XSP 3010/3020) should be used to
connect the shielded cable to ground (see page 726).
5. The maximum channel to channel working voltage cannot exceed 30 Vdc.
6. N / C = Not connected.
Diagnostics
1. Unused inputs may cause the activation of the F LED. To avoid this occurence,
the unused channels should be configured in the 0...25 ma range.
2. This module produces an error signal F if any one channel detects a broken wire
condition in the 4...20 mA range.