Assortment / System Description

15
Synco 200
The Synco 200 range comprises 5 universal controllers. They offer more than 140
programmed and stored applications.
The universal controllers operate autonomously and do not communicate with
other Synco devices.
Device Product no. Data Sheet
Universal controllers RLU..
1 control loop, 4 UI, 1 DI, 1 RNO, 1 RCH
1 control loop, 4 UI, 1 DI, 2 AO
2 control loops, 4 UI, 1 DI, 2 AO, 1 RNO, 1 RCH
2 control loops, 5 UI, 2 DI, 3 AO, 1 RNO, 1 RCH
2 control loops, 5 UI, 2 DI, 3 AO, 4 RNO, 2 RCH
Signal converter
UI: Universal inputs, DI: Digital inputs, AO: Analog outputs
RNO: Relay with NO contact, RCH: Relay with changeover contact
RLU202
RLU220
RLU222
RLU232
RLU236
SEZ220
N3101
⏐
⏐
⏐

N5146
Mounting frame
Dimensions: 143 x 87 mm, for RLU202, RLU220, RLU222, and SEZ220
Dimensions: 199 x 87 mm, for RLU232 and RLU236
ARG62.201 N3101
HIT  HVAC Integrated Tool (see page 87)
To select and engineer plants operating with Synco 200
www.siemens.com/HIT
Universal controllers RLU..
RLU.. universal controllers are used to control temperature, humidity, pressure and
other HVAC-specific functions in ventilation, air conditioning and chilled water
plants.
RLU202, RLU220, RLU222
RLU232, RLU236
Every RLU.. universal controller consists of terminal base and control section. The
control section with printed circuit board is accommodated in a plastic housing. The
housing front carries the display with the operating elements. The control section
plugs into the terminal base.
The terminal base has 2 rows of connection terminals, one at the top and one at
the bottom, each with 2 levels. Terminal assignment depends on the type of
controller. The terminal base can be prewired.
The connection terminals at the top are the low-voltage side for passive/active
sensors, active signal sources, status contacts and modulating actuators.
The connection terminals at the bottom are the mains voltage side for the
connection of switching aggregates, such as pumps and fans.
Introduction
Overview
Brief description
Mechanical design
Connection terminals