Hardware reference guide

I/O Modules
516
35013379 11/2011
External Wiring Recommendation
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. All terminals labeled ‘RETURN" are common inside the module.
6. N / C = Not connected.
NOTE: VM is an optional voltmeter that can be connected to read voltage that is
proportional to the current. Wiring to this terminal is limited to 1 meter maximum.
Diagnostic
1. Unused outputs may cause the activation of the F (fault) LED. To avoid this
occurrence the unused channels should be configured in the 0 ... 25 mA range.
2. At power up, channel outputs are all at zero current (0 mA).