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RWD45U Controller Installation and Commissioning Guide
Document Number 129-409
October 5, 2009
Siemens Industry, Inc.
Page 5 of 13
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 99 (Not
consecutive numbers)
OUT RANGE The setting is out of range
Daytime operation
Err
Sensor error
Night time operation
Sec
Seconds
X1
Universal (Main) Input X1
Ni 1000
Ω
: -58°F to 302°F
(50°C to 150°C)
(unchangeable)
Pt 1000
Ω
: -4°F to 356°F
(-20°C to 180°C)
(unchangeable)
0 Vdc to 10 Vdc: -100 to
2400
X2
Universal (Auxiliary) Input
Ni 1000
Ω
: -58°F to 302°F
(50°C to 150°C)
(unchangeable)
Pt 100 0
Ω
: -4°F to 356°F
(-20°C to 180°C)
(unchangeable)
0 Vdc to 10 Vdc: -100 to
2400
Variable resistor: the
resistance range should be
within 0
Ω
to 1000
Ω
X3
Universal input X3
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 Vdc to 10 Vdc: -100 to
2400
Indicates cooling
°C
Celsius scale
Indicates heating
°F
Fahrenheit scale
SP-h
Setpoint on the heating side
for temperature control
----
No unit (e.g., pressure, air
quality and air volume flow)
SP-c
Setpoint on the cooling side
for temperature control
K
Kelvin
Y1
Analog output
0 to 10V
%
Percentage scale
Q
Digital outputs
Output status = Off
ECO
Economy mode
Output status = On
R/V
Reversing valve status = On
Standby mode
OFF
Controller = Off
ON
Controller = on standby
PS 4 – Differentials and Delays
SD
Switching Differential
0.1 K to 50 K
TD1
Time Delay for heat
⇔
cool
0 to 4,096 sec
T
ON
Minimum switch on time
for Q
0 to 4,096 sec
TD2
Time Delay for next
stage ON
0 to 4,096 sec
T
O
FF
Minimum switch off time
for Q
0 to 4,096 sec
PS 3 – Auxiliary Control Loop Set-up
Setpoint reset shift
(Start point, end point and
shift differential)
Y1
Heating or reverse acting
output
Setpoint reset shift
(Start point, end point and
shift differential)
Y1
Cooling or direct acting
output
SUM
Summer changeover point
D1
Digital input function
WIN
Winter changeover point
TN
Integral action time
0 to 4,096 sec
Time delay from Winter
⇔
Summer changeover point
XP
Proportional Band
Ni: 0.5 to 180 K
Pt: 0.5 to 180 K
Active input: depends on the
sensor range
+
-