Brochure/Catalogue

Introduction
Digital input/output interfaces for high voltage
(R System)
The digital signals used by PLCs are usually 24V DC or a
maximum of 48 V DC. Nevertheless, a few cards also work
at higher voltages, up to 230 V AC.
For these voltages, the insulation distance between
channels has to be increased up to values that the ribbon
cable connector is not able provide. In this case, interfaces
supplied with RSV connectors have been included in the
range.
Analogue input/output interfaces (S System)
The analogue input/output interfaces have been designed
using a shielded SUB-D connector, ideal for avoid
interferences in the transmission of analogue signals.
The pre-assembled cables are also supplied with shielded
cable.
Insulated digital input/output interfaces
The insulated digital input/output interfaces are used,
when necessary, to isolate the PLC signal from the eld
signal, normally when adapting voltages between the eld
components and the PLC operational voltage.
The current provided by the PLC is not high enough for the
different eld components in the output cards. In this case,
the relay acts like an amplier and offers enough power to
connect the different elements, such as, for example, electro
valves.
The RSM family, available in 8,12, and 16 relay versions
connects to the PLC with a ribbon cable and is available in
compact form (6 mm relays) or standard (RCL relay) and
includes additional features such as:
• Switch in coil and contact
• Fuse in contact
• 1 or 2 CO contacts
In addition, the relays also can be replaced by the
Weidmüller solid-state-relays.
Universal solutions for PLC input/output cards
A
A.6 2690170000
Universal solutions for PLC input/ output cards