Measures To Protect Against Interference Voltages; Connection Example - Pilz PMI v315 ATEX Operating Manual

Installation and Wiring

Measures to protect against interference voltages

• Wire inductive loads (e.g. contactor coils, relay coils and solenoid valve
coils) using suppression elements (e.g. RC elements). This is particularly
important if these inductive loads are close to the supply voltage or are
fed from the same supply voltage.
• If strong magnetic fields are present, we recommend you use a bulkhead
separator, i.e. metal sheet (MU metal).

Connection example

1
Fig. 5-5: Connection example
5 - 8
24 VDC
0 V
3
2
4
3
5 4 5
6
Operating Manual: PMI v315 ATEX/PMI o315 ATEX
1: Earth star point
of unit or control
cabinet
2: Earth bus bar
3: Supply voltage
4: Earthing terminal
(electronic)
5: Earthing bolt
(housing)
6: Data line screening