Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
6-32
I/O modules PCD3
Digital output modules, electrically isolated
6
6.5 Digital output modules, electrically isolated
PCD3.A200 4 make contacts 2 A
PCD3.A210 4 break contacts 2 A
PCD3.A220 6 make contacts 2 A
PCD3.A251 6 changeover contacts + 2 make contacts 2 A, 24-pole cage
clamp terminal block
PCD3.A410 8 outputs 0.5 A
Installation instructions
For reasons of safety it is not permissible to connect low voltages (up to 50 V)
and higher voltages (50…250 V) to the same module.
If a Saia PCD
®
module is connected to a higher voltage (50…250 V), approved
components for this voltage must be used for all elements that are electrically con-
nected to the system.
Using higher voltage (50…250 V), all connections to the relay contacts must be
connected on the same circuit, i.e. in such a way that they are all protected against
one AC phase by one common fuse. Each load circuit may however be fused
individually.
I/O modules and I/O terminal blocks may only be plugged in and removed when the
Saia PCD
®
and the external +24V are disconnected from the power supply.
The Annex, Section A.3 "Relay contacts" contains measurement details and
suggested wiring for the relay contacts. For safe switching and a long service life,
theseguresmustbeobserved.
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