Hardware Manual

Saia-Burgess Controls AG

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Appendix A

A

A-6

Installation direction and relays contact protection

A.4 Installation direction and relays contact protection

A.4.1 Installation direction for switching low voltages

For reasons of safety it is not allowed that low voltages (up to 50 V) and higher volt-

ages (50 ... 250 V) are connected to the same module.

If a PCD system module is connected to a higher voltage (50 ... 250 V) approved

components for this voltage have to be used for all elements which are galvanically

connected to the system.

Using higher voltage (50 ... 250 V), all connections to the relay contacts are to be con-

nected on the same circuit. That means at one point in such a way that they are all

protected against one AC-phase by only one fuse. Each load circuit may be protected

individually by a fuse of max. 2 A.

A.4.2 Installation direction for swithcing higher voltages

For reasons of safety it is not allowed that low voltages (up to 50 V) and higher volt-

ages (50 ... 250 V) are connected to the same module.

If a PCD system module is connected to a higher voltage (50 ... 250 V) approved

components for this voltage have to be used for all elements which are galvanically

connected to the system.

Using higher voltage (50 ... 250 V), all connections to the relay contacts are to be con-

nected on the same circuit. That means at one point in such a way that they are all

protected against one AC-phase by only one fuse. Each load circuit may be protected

individually by a fuse of max. 2A.

PCD 2 .A 200

L N

Burden

max. 10 A

max. 2 A