Assortment / System Description

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The permissible environmental conditions in the range of 0…50 °C and 5…95%
r.h. (noncondensing) must be observed. Not permitted are wet or damp environ-
ments.
Extension modules must be fitted in accordance with their activated application.
If space in the control panel is confined, the devices can be fitted on 2 or
more levels.
In that case, the devices are interconnected with the help of the RMZ780 module
connector. The length of the connecting cables may be modified by the installer.
But it may not exceed 10 meters.
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Low-voltage side
Mains voltage side
Connection terminals carrying protective extra
low-voltage (e.g. for sensors and KNX bus) are
located on the low-voltage side (top of the
housing).
Connection terminals carrying mains voltage
(e.g. for actuators, pumps, etc.) are located on
the mains voltage side (bottom of the housing).
The controls operate on AC 24 V (safety extra low-voltage SELV/PELV).
The RMZ78x extension modules and RMZ790/RMZ791 operator units are powered
by the controls.
Communication between the controls is executed via the KNX bus. All controls
have a connection facility for the KNX bus.
The bus wires are connected to terminals CE+ (red) and CE– (black). The polarity
of the bus wires CE+ and CE– must be observed and must not be changed.
Note: The spring cage terminals of the Synco controls can accept only 1 wire. For this reason,
terminals CE+ and CE– exist twice and are interconnected inside the units.
The Synco 700 controls RM.. and the RMZ78x extension modules are equipped
with spring cage terminals. These terminals ensure excellent electrical connections
and straightforward wiring.
1 Strip the wire over a length of 7…8 mm 2 Push on the spring cage terminal with a screwdriver
and, at the same time, insert the wire
Environmental conditions
Extension modules
Module connector
RMZ780
Connection terminals
Operating voltage
AC 24 V
KNX bus
Wiring the devices
Spring cage terminals
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