Siemens RWD62U User manual

RWD62U Controller
Installation and
Commissioning Guide
Document No. 129-410
October 1, 2004
Item Number 129-410, Rev. 010
Function The RWD62U is a three-input, two-output device used to control temperature, humidity,
air pressure, fluid pressure, air/fluid velocity, and air quality in commercial and industrial
facilities.
Application The RWD62U is used for comfort control in HVAC systems. Two analog outputs with
0 to 10 Vdc voltage are provided for either two-stage heating or cooling, or heating and
cooling. The main analog input (X1) can be set as °F, °C, % or none specified (-----).
The default is °F.
The second analog input (X2) can be used for the following applications:
•PI Limiter function (absolute and relative limit)
•Remote setpoint function
•Setpoint compensation
•Winter/summer mode changeover (analog or digital input) (reversal of
heating/cooling output)
•Cascade control function
•Maximum priority for cooling/dehumidifying
A separate digital input is provided for day/night mode changeover.
The RWD62U controller is intended for either DIN rail mounting in a switchboard or
screw mounting with a protective enclosure.
Desired output configuration and auxiliary function must be entered for initial set-up.
See Service (PS) Mode Screen Sequence.

Document Number 129-410 RWD62U Controller Installation and Commissioning Guide
October 1, 2004
Page 2 of 10 Siemens Building Technologies, Inc
Table 1. Application Numbers.
Main Loop
H = Heating
C = Cooling
(First digit =
Main control loop
Second digit = Auxiliary
control loop) SP SP SP SP
SP SP
Auxiliary Loop #1 ×
H Sequence #2 × H + H
Sequences
# 3 ×
H + C Sequences #4 × C Sequence #5 × C + C
Sequences
#x0 (No auxiliary) #10 #20 #30 #40 #50
#x1 (Remote setpoint) #11 #21 #31 #41 #51
#x2 (Absolute limiter) #12 #22 #32 #42 #52
#x3 (Relative limiter) #13 #23 #33 #43 #53
#x4 (Comp. shift) #14 #24 #34 #44 #54
#x5 (Cascade) #15 #25 #35 #45 #55
#x6 (Win/Sum Digital) #16 #26 #36 – –
#x7 (Win/Sum Analog) #17 #27 #37 – –
#x8 (Maximum priority) – – #38 #48 #58
#x9 Main loop (Active input) #19 #29 #39 #49 #59
NOTES:
1. Application sheets for the listed applications are available online.
2. The heating sequence output is set to Direct Acting (default). This is typically used for normally open
valves. Output can be set to reverse acting by changing the MIN and MAX value. See PS4.
3. The cooling sequence output is set to Direct Acting (default). This is typically used for normally closed
valves. Output can be set to reverse acting by changing the MIN and MAX value. See PS4.

RWD62U Controller Installation and Commissioning Guide Document Number 129-410
October 1, 2004
Siemens Building Technologies, Inc. Page 3 of 10
Display Explanation
Symbol Description Setting Range Symbol Description Setting Range
Main Screen
Adjustable setting screen TOOL PC communication port
being used
#10 Application Numbers 10 through 59 (Not
consecutive numbers) OUT RANGE The setting is out of range
 Daytime operation Err Sensor error
eNight time operation #10* * = Using, not the defaulted
sensor
X1 Universal (Main) Input X1 Siemens Ni 1000 Ω: -58°F
to 302°F (-50°C to 150°C)
(unchangeable)
Pt 1000 Ω: -4° to 356°F-
(20°C to 180°C)
(unchangeable)
0 to 10Vdc: -100 to 8,000
WIN/SUM Winter/Summer mode being
chosen or activated
X2 Universal (Auxiliary) Input
X2 Siemens Ni 1000 Ω: -58°F
to 302°F (50°C to 150°C)
(unchangeable)
Pt 1000 Ω: -4° to 356°F-
(-20°C to 180°C)
(unchangeable)
0 to 10Vdc: -100 to 8,000
Variable resistor:the
resistance range should be
within 0 to 1000 ohm
LIM Limiter mode being chosen or
activated
---- No unit (e.g. pressure, air
quality and air volume flow) REM Remote setpoint mode being chosen or activated
Sec Second CAS Cascade mode being chosen
or activated
Y1 Analog output 1 0 to 10 Vdc MaxPrior Maximum priority mode being
chosen or activated
Y2 Analog output 2 0 to 10 Vdc SP-1 Setpoint 1
°C Celsius scale SP-2 Setpoint 2
°F Fahrenheit scale SP-h Setpoint on the heating side
for temperature control
K Kelvin SP-c Setpoint on the cooling side
for temperature control
% Percentage scale XDZ For H + C application. Dead
zone between H and C day
setpoints when in REM
mode.
Ni: 0.5 to 180 K
Pt: 0.5 to 180 K
Active input: 0.05 to 7,300
Commissioning Screen
PS1 Parameter setting
mode: Application No.
set-up
PS4 Parameter setting mode:
Main control loop setting
PS2 Parameter setting
mode: Defining Unit X1
and X2
PS Next To enter the next
parameter setting
PS3 Parameter setting
mode: Auxiliary control PS Exit To exit the whole parameter setting mode
+
-

Document Number 129-410 RWD62U Controller Installation and Commissioning Guide
October 1, 2004
Page 4 of 10 Siemens Building Technologies, Inc
Display Explanation, Continued
Symbol Description Setting Range Symbol Description Setting Range
PS4 – Main Control Loop Set-up
TN Integral action time for
Y1, Y2 0 to 4,096 seconds
MIN Output end point for
Y1 or Y2 0 to 100%
XP Proportional band for
Y1, Y2 0.05 to 7,300 (depends on the X1 setting
range)
MAX Output end point for
Y1 or Y2 MIN to 100% or 0% to MIN
PS3 – Auxiliary Control Loop Set-up
XP-h Proportion band for heating Ni:1°F to 360°F
(0.5 K to 180 K)
Pt: 1°F to 360°F
(0.5 K to 180 K)
Active input: 0.05 to 7,300
T Time elapsed to allow next
winter/summer changeover
(Y1 only)
0 to 4,096 sec
XP-c Proportion band for cooling Ni:1°F to 360°F
(0.5 K to 180 K)
Pt: 1°F to 360°F
(0.5 K to 180 K)
Active input: 0.05 to 7,300
Compensation shift
(Start point, End point and
Shift differential)
XP-1 Proportion band for Y1
output Active input: 0.05 to 7,300 MAX Maximum Limiter -80 to 8,000
XP-2 Proportion band for Y2
output Active input: 0.05 to 7,300 MIN Minimum Limiter -100 to 7,980
TN-h Integral action time for
heating 0 to 4,096 sec WIN Winter changeover point -100 to 8,000
TN-c Integral action time for
cooling 0 to 4,096 sec SUM Summer changeover point -100 to 8,000
TN-1 Integral action time for Y1
output 0 to 4,096 sec
TN-2 Integral action time for Y2
output 0 to 4,096 sec
PS 2 – Unit X1 and X2 Sensor Type and Sensing Range Definition
Unit Define unit °F, °C, %, or --- (no unit
display)
∆X1 Calibration offset for X1
(Ni and Pt sensor only) -9°F to 9°F -5 to 5 K
X1LS X1 is Siemens Ni 1000 Ω
temperature sensor Ni 1000 Ω: -58°F to 302°F
(-50°C to 150°C)
(unchangeable)
∆X2 Calibration offset for X2
(Ni and Pt sensor only) -9°F to 9°F -5 to 5 K
X2LS X2 is Siemens Ni 1000 Ω
temperature sensor Ni 1000 Ω: -58°F to 302° F
(-50°C to 150°C)
(unchangeable)
X1 L Start point of the X1
(for 0 to 10 Vdc only) -100 to 8,000
X1Pt X1 is Platinum Pt 1000 Ω
temperature sensor Pt 1000 Ω: -4°F to 356°F (-20°C to 180°C)
(unchangeable)
X2 L Start point of the X2
(for 0 to 10 Vdc only) -100 to 8,000
X2Pt X2 is Platinum Pt 1000 Ω
temperature sensor Pt 1000 Ω: -4°F to 356°F (-20°C to 180°C)
(unchangeable)
X1 H Stop point of the X1
(for 0 to 10 Vdc only) -100 to 8,000
X1 0 to 10 X1 is 0 to 10 Vdc input
sensor 0 to 10 Vdc: -100 to 8,000 X2 H Stop point of the X2
(for 0 to 10 Vdc only) -100 to 8,000
X2 0 to 10 X2 is 0 to10 Vdc input sensor 0 to 10 Vdc: -100 to 8,000 X2VR Variable Resistor 0 Ωto 1000 Ω
PS 1 – Application Number Selection:
LIM
ABS Absolute Limiter LIM rEL Relative Limiter
WIN/SUM
diG Winter/Summer changeover
by digital input WIN/SUM
AnLG Winter/Summer changeover
by analog input
Act Active sensor input

RWD62U Controller Installation and Commissioning Guide Document Number 129-410
October 1, 2004
Siemens Building Technologies, Inc. Page 5 of 10
Table 2. PS 3 Auxiliary Function Parameter Set-up.
Auxiliary Number:
Parameter Description #x1
REM
#x2
LIM #x3 LIM #x4 COMP
#x5
CAS
#x6
WIN/SUM #x7 WIN/SUM
XDZ Dead zone or offset (refer to the above explanation) x
MAX Value to start Limiter cooling x x
MIN Value to start Limiter heating x x
XP-h P-band in Limiter heating x x
XP-c P-band in Limiter cooling x x
TN-h Integrating time heating x x x
TN-c Integrating time cooling x x x
COMP start point heating/reverse acting x
COMP end point heating/reverse acting x
Adjustment in heating/reverse acting x
COMP start point cooling/direct acting x
COMP end point cooling/direct acting x
Adjustment in cooling/direct acting x
MAX Maximum of virtual setpoint x
MIN Minimum of virtual setpoint x
XPh1 First heating/reverse acting P-band in Cascade x
XPc1 First cooling/direct acting P-band in Cascade x
WIN As X2 < WIN, Y1 is reverse acting x
SUM As X2 > SUM, Y1 is direct acting x
T Time elapsed to allow next winter/summer
changeover (Y1 only)
x x
There are no PS3 auxiliary function parameters for applications #x8 and #x9.
Operating Modes The controller has three operating buttons for the following functions:
SEL ●This button is used to enter or save the value adjustment.
▲These operating buttons are used for viewing and adjusting
▼parameters
Time-out For setpoint adjustment in Normal mode, the controller will automatically exit the setting
after 20 seconds. However, there is no time limit for setpoint adjustment in Service (PS)
mode. The controller remains on the PS mode until the user completes the entire
process.
NOTES: Only those parameters that apply to a particular program appear on the
display or in the sequence in commissioning. For example, if the second
analog input is not used, X2 values and selections will not appear.
A software tool for controller application selection and parameter adjustment
is available (Tool Kit CD, P/N 125-3481). It is a user-friendly Windows®95 (or
later)-based software tool which provides you with a printout of the controller
settings. Parameters can be hidden from display by using the software tool.

Document Number 129-410 RWD62U Controller Installation and Commissioning Guide
October 1, 2004
Page 6 of 10 Siemens Building Technologies, Inc
Main Display
Y1 Y2 X2
5.0 72°F
The main display shows:
•Y1 and Y2 outputs in Volts dc. (0 to 10V will be display as 0, 1, 2 through 10)
•Whether day or night setpoint is selected (= day, e= night).
•X1 value in °C, °F, % or no unit.
Other displays are available by pressing the +▲button. The various displays are listed
below in sequence from the main display.
On entering any of the setpoint displays, the setpoint on display can be adjusted by
pushing the SEL ●button. Increase value by pressing the + ▲button, or decrease the
value by pressing the −▼button. When the required value is reached, press the SEL
●button to save the new value.
Alternative displays return to the main display after 20 seconds.
Table 3. Main Display.
Action Typical Display Selected Display Comments
Push --- Y1 Y2 X1 
Default page includes:
X1 reading,
Y output status
Day/night setpoint selection status
Push +▲button Y1 SP – h 
66.0°F (19.0°C)
Setpoint page, setting value displayed and is
adjustable:
First stage heating or cooling, direct or reverse day
acting setpoint, depending on application.
Push +▲button Y2 SP – c 
70.0°F (21.0°C)
Setpoint page, setting value displayed and is
adjustable:
Second stage heating or cooling, direct or reverse day
acting setpoint, depending on application.
Push +▲button Y1 SP – h e
59.0°F (15.0°C)
Setpoint page, setting value displayed and is
adjustable:
First stage heating or cooling, direct or reverse night
acting setpoint, depending on application
Push +▲button Y2 SP – c e
77.0°F (25.0°C)
Setpoint page, setting value displayed and is
adjustable:
Second stage heating or cooling, direct or reverse night
acting setpoint, depending on application
Push +▲button X1
68.0°F (20.0°C) X1 – Main sensor reading
Push +▲button X2
50.0°F (10.0°C) X2 – Auxiliary sensor reading.
Push +▲button Y1 5.0 Output page: output value displayed
First stage Y1 value in Vdc
Push +▲button Y2 0.0 Output page: output value displayed
Second stage Y2 value in Vdc
Push +▲button
#33
Application number and control sequence diagram
After 20 seconds any
page will return to the
main default page if
left unattended.
Y1 Y2 X1 Back to main default page

RWD62U Controller Installation and Commissioning Guide Document Number 129-410
October 1, 2004
Siemens Building Technologies, Inc. Page 7 of 10
Service (PS) Mode
Screen Sequence •Press both buttons +▲and −▼and hold for five seconds to enter the Service
Mode.
•Press +▲for viewing the next page or to increase value.
•Press −▼for viewing the previous page or to decrease value.
•Press ●to enter the PS page or edit and save the value when the page
appears with the logo.
•On entering service (PS) mode, PS4 appears first.
•For initial setup, proceed directly to PS1 and enter your desired application
number first.
•PS1 will already be opened if power has never been connected to the new
controller. See Figure 1.
•PS2 to PS4 parameters may need to be adjusted for service/commissioning
purposes.
Commissioning
Flowchart
RWD0428R1
- Max/Min limiter
- Proportion band
- Integral time
- Compensation shifts start/end point
- Winter/Summer changeover temp.
and time delay
Auxiliary loop
- Day/night setpoint
- Winter/summer setpoint
- Define the unit as
o
F,
o
C, %
or no unit
- Sensor type
- Sensing range
- Calibration offset
Define unit, X1 & X2
- Application no. selection
Application no.
- Proportion band
- Integral time
- Output for minimum end
- Output for maximum end
- Day/night setpoint
- Winter/summer setpoint
Main loop
X1Y1 Y2
(wait 2 seconds)
New controller application
and setpoint sequence
* New controller
Normal programming
74°F00
Figure 1. Commissioning Flowchart.

Document Number 129-410 RWD62U Controller Installation and Commissioning Guide
October 1, 2004
Page 8 of 10 Siemens Building Technologies, Inc
Wiring Terminals
G0 Y2
D1 M X1 M X2 M G
M
Y1 M
Tool
TH0800R1
NOTE: Screwed terminals for cables with min
2 × 16 or 1 × 14 AWG.
Figure 2. Wiring Terminals.
G, G0 24 Vac supply
(SELV 24 Vac power supply)
M Ground (G0) for signal inputs
and universal inputs
X1 Signal input (main input:
Siemens Ni 1000, Pt 1,000
and 0 to 10 Vdc)
X2 Signal input (Aux. Input:
Siemens Ni 1000, Pt 1000, 0
to 10 Vdc and remote setting
unit)
Y1, Y2 Analog outputs (0 to 10 Vdc)
D1 Digital input
Tool Communication port with PC
(9-pin plug)
Wiring Diagram
Y1
G
Y1
S1
D1
G0
Y..
BM
X1 X2MM
RWD0061R1
X1
M
M
G0
G
SN
24 Vac
N1
TOOL
PC Y2
G
BM
X2
G
M Y2
Figure 3. Wiring Diagram.
G, G0 Power
N1 RWD62U controller
X1 Room temperature
sensor
(Termination G appears when
X2 is
an active sensor)
X2 Auxiliary sensor or digital input
S1 Time clock or switch
Y1 Heating control valve with
0 to 10 Vdc input
Y2 Cooling control valve with
0 to 10 Vdc input
PC Personal computer
(optional set-up only)
CAUTION:
The TOOL signal ground is galvanically connected to G0 inside the controller. If the signal line of the
computer is grounded to Earth, the G0 line after TOOL connection will be grounded as well. This will
change the SELV to a PELV.

RWD62U Controller Installation and Commissioning Guide Document Number 129-410
October 1, 2004
Siemens Building Technologies, Inc. Page 9 of 10
Installation
Mounting Notes
TH0741R1
AB C D
Figure 4. Mounting Options.
The RWD62U can be mounted as follows:
Observe all local installation and mounting regulations.
A On a DIN rail (EN 50 022-35 x 7.5) at least 4.75 inches (120 mm) long for
RWD62U.
B Wall-mounted with two screws. (Minimum length of the screws should be
2.75 inches (70 mm) (φ3.2 mm).
C Front-mounted using standard elements:
•One DIN rail 5.90 inches (150 mm) long for RWD62U
•Two hexagonal placeholders 1.96 inches (50 mm)
•Washers
•Screws
NOTE: (Ensure all terminations are tightened before final mounting to front
panel.)
D Inside the ARG62.21.
WARNING:
There must be a minimum of 0.31 inches (8 mm) distance from
terminations to panel/enclosures to avoid electric shock.
Electrical Installation
Notes •Standard cables can be used for the controller. However, when mounting in an
environment greatly exposed to EMI, use only shielded cables.
•The RWD62U is designed for 24 Vac operating voltage.
•Use safety insulating transformers with double insulation as per EN 60742; they
must be designed for 100% Duty.
•When using several transformers in one system, the connection terminals G0
must be galvanically connected.
•Supplying voltages above 24 Vac to low voltage connections may damage or
destroy the controller or any other connected devices. Additionally, connections
to voltages exceeding 24 Vac endanger personal safety.

Document Number 129-410 RWD62U Controller Installation and Commissioning Guide
October 1, 2004
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and
models as design improvements are introduced. . Windows is a registered trademark of Microsoft Corporation. Other product or company
names mentioned herein may be the trademarks of their respective owners. © 2004 Siemens Building Technologies, Inc.
Siemens Building Technologies, Inc.
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
U.S.A.
Your feedback is important to us. If you have
comments about this document, please send
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Document No. 129-410
Country of Origin: US
Page 10 of 10
Dimensions
TH0802R1
5.12
(130)
3.50
(89)
4.37
(111)
2.22
(56.5)1.89
(47.9)1.22
(31)
0.16
(4)
0.16 (4)
4.17
(106) 1.80
(45.7)
Figure 5. RWD62U Dimensions in Inches (Millimeters).
TH0745R1
5.91 (150)
7.87 (200)
2.41 (61.2)
Figure 6. ARG62.21 Enclosure Dimensions.