SBC PCD2 Series User Manual

Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
A-5
Appendix
Installation direction and relays contact protection
A
A.6 Installation direction and relays contact protection
NOTE
Extra low voltages (ELV) or secure low voltages (SELV) are voltages up to 50 Volts.
NOTE
Low voltages are voltages between 50 … 250 Volts.
A.6.1 Installation direction for switching extra low voltages
Scope: PCD2.A250 and PCD3.A251
For safety reasons, voltages of up to 50 V may be applied to this module.
The safety standard, concerning the air and leakage current distances between
adjacentchannels,isnotgivenwiththismoduleforhighervoltages(50 … 250V).
Connection example PCD2.A250 and PCD3.A251:
NO - O5
CO4-7
NO - O4
CO0-3
NO - O7
CO0-3
NO - O6
CO4-7
Terminal block
NO - O3
NO - O2
NO - O1
NO - O0
+24 VDC
GND
Supply voltage
of the relays
Load 1
Load 0
Load 3
Load 2
Load 5
Load 4
Load 7
Load 6
Si 3
Si 2
Si 5
Si 4
Si 1
Si 0
Si 7
Si 6
Si
4-7
Si
0-3
+24 VDC
+24 VDC
+24 VAC
~
max. 8 A
max.
8 A
max. 2 A
max. 2 A
max. 2 A
max. 2 A
max. 2 A
max. 2 A
max. 2 A
max. 2 A
All connections to the
relay contacts, which are
connected to the same
circuit, must be protect-
ed by a common fuse.
The individual load
circuits, on the other
hand, may be protected
individually by a fuse.

SBC PCD2 Series Specifications

General

Brand	SBC
Model	PCD2 Series
Category	I/O Systems
Language	English