The document provides a comprehensive overview of Siemens RWD controllers designed for HVAC applications, detailing various models, functionality, and specifications. It describes features such as universal inputs for different temperature sensors, multiple output configurations, and automated control based on environmental conditions. Additionally, the RWD series supports various control applications including temperature, humidity, and air quality management with capabilities for remote setpoint and cascade control functionality.

1. SIEMENS RWD CONTROLLER’S

2. TYPES
RWD 32
RWD 62
RWD 68
RWD 82
RWD 62U
RWD 68U
RWD 82U
RWD 44U
RWD 60
Ect…….
RWD controllers and other types of controllers
RLU 220
RLU 222
RLU 232
RLU 210
RWG 1.M12D
RMS 705
RMS 760 B
SHE 62.1
SEM 62.2
Ect…….

3. RWD CONTROLLER’S
The RWD family of Universal Controllers are intended for
heating, air conditioning, ventilation and refrigeration in
comfort control applications.
OUR WORKS( HUMIDIFICATION PLANT AUTO CONTROL)
Based on the Department Relative Humidity the pump & Fan are ON/OFF
Automatically.
Single pump(Fan ON/OFF) Control.
TWO pump(Fan ON/OFF) Control.

4. RWD CONTROLLER’S
Standalone electronic temperature controller with P or PI
response
Operating voltage in accordance to type AC 230 V or AC 24 V
Control application selectable via Application Number
Active input scale can be selectable
Two universal inputs for Ni 1000, Pt 1000 temperature
sensors & 0…10 V signals
Unit can be set as ºC, ºF, % or no specified unit
One 3-position output or two two-position outputs, direct or
reverse action
One digital input for day / night changeover
Entering or changing of all data via operating buttons on the
controller, possible without additional tools
PC connection for downloading canned applications via the
software tool

5. APPLICATIONS
RWD62U/68U/82U main loop control applications are designed for
temperature, static pressure, humidity, air pressure, fluid pressure,
refrigeration, air quality and air fluid velocity control. The
controller contains pre-programmed applications.
The universal RWD32/RWD82/RWD68 controllers are used for
comfort control in HVAC systems.
Two digital outputs selectable between 2 stages of on/off control or
as a single 3 point controller.
The main analogue input can be set as °C, °F, % or no specified unit.
Measurement and control of temperature, relative
humidity, absolute humidity, en- thalpy, pressure
differential, volumetric airflow and indoor air quality. The
input scale can be set from –100 units to 8,000 units

6. Functions Summary Controller
Auxiliary selectable function
Universal input X2 for one of the following functions:
PI limiter function (Absolute & Relative)
Remote setpoint function
Cascade control function
Setpoint compensation
Winter/summer operation
Maximum priority
Digital input D1 for setpoint changeover day / night
Stand-alone controller with one 3-position or
two 2-position (ON / OFF) outputs with
independent adjustment on each sequence for
direct acting and / or reverse acting. In 3-
position operation, the controller exhibits PI
response.

7. INPUTS & OUTPUTS PORTS
FREQUENTLY USED
RWD 68/RWD 82/RWD 32
Module Operatig
Voltage
Outputs
Digital Port Analog Port
(0 to10 V dc)
Input
Output
RWD62U 24 V ac – 2 2
RWD68U 24 V ac 1 2 1
RWD82U 24 V ac 2 2 -
RWD44U 24 V ac 4 2 -
RWD45U 24 V ac 1 3
RWD 32 230 V ac 2 2 -
RWD 82 24 V ac 2 2 -
RWD 68 24 V ac 1 2 1

8. GENERAL SPECIFICATIONS
Power supply Operating voltage RWD32
Operating voltage RWD82
Safety extra-low voltage
(SELV) as per
Frequency RWD32 Frequency
RWD82
AC 230 V ± 15 %
AC 24 V ± 20 %
EN 60730
50 Hz/60 Hz
50 Hz/60 Hz
Power consumption RWD32
RWD82
6.5 VA
3.5 VA
LCD Actual and nominal values 4 digits
Weight without
packaging
RWD82
RWD32
0.297 kg
0.465 kg

9. GENERAL SPECIFICATIONS
Environmental
conditions
Transport
Climatic conditions
Temperature
Humidity
Mechanical conditions
IEC721-3-2
Class 2K3
- 25...+ 70 °C
< 95 % r.h.
Class 2M2
IP code Housing
Front and with ARG62.21
Front and with ARG62.22
IP 20 as per EN 60529
IP 30 as per EN 60529
IP 30 as per EN 60529
Product standards Automatic electrical controls
for household and similar use
EN 60730
Terminals Screw terminals for cables
with
min. 0.5 mm dia.
max. 2 x 1.5 mm2 or 2.5
mm2

10. GENERAL SPECIFICATIONS
Set Point
Adjustment Range...-58°F to +302°F (-50°C to
+150°C)
Display Resolution (Does Not Relate to Controller
Accuracy)
Siemens Ni 1000 Ohm....1°F (0.5°C)
Pt 1000 Ohm ....1°F (0.5°C)
Active Sensor ...Depends on Setting Range

11. GENERAL SPECIFICATIONS
RWD62U/68U/82U
Digital Input D1
Polling Voltage for Control Commands (D...M) ....15 Vdc
Current Consumption.....<15 mA
RWD68U
Analog Outputs Y1, Y2
Range ....0 to 10 V dc
Maximum Current....+1 mA
Digital Output (Q1)
Relay Contacts (potential-free)
Voltage ....24 V ac to 230 V ac
6A Res/5A Ind/5 FLA/ 30 LRA/ 1/2 HP 30 V dc, 4A
RWD82U
Digital Outputs ....Q1, Q2
Relay Contacts (potential-free)
Voltage ....24 Vac to 230 Vac
6A Res/5A Ind/5 FLA/ 30 LRA/ 1/2 HP 30 Vdc, 4A

12. Internal diagram
G, G0 24 V ac supply ( SELV AC 24 V Power supply)
L-N AC 230 V supply
D1 Digital input
M Ground (G0) for signal inputs
Q1-Q4 Relay outputs; various voltages permissible
x1 Signal input (Main Input: Siemens Ni 1000, Pt 1000 and 0-10 V dc)
x2 Signal input (Aux. Input: Siemens Ni 1000, Pt 1000 and 0-10 V dc)
x3 Signal input (Eco. Sensor or second ind. Input: Siemens Ni 1000, Pt 1000
and 0-10 V dc)
Y1 Analog output (0 to 10 V dc)
Tool Communication port with PC (9 pin plug)
Note M, GND and G0 are internally connected.
G D1 M
RWD82
X1 M X2 M Tool

13. Commissioning notes
A booklet is supplied with the RWD32 & RWD82
controller for commissioning. Observe the following:
The controller must be configured for plant-specific
operation using standard application number.
Plant specific fine tuning can be performed if
required (refer to the commissioning booklet).
Power supply to the controller and the connected
devices must be guaranteed
Values and settings entered remain available even on
power failure.
Time Clock for RWD Temperature Controllers.

14. Dimensions

15. OUR PROJECTS Work