RWD45U Controller Installation and Commissioning Guide
Document Number 129-409
October 5, 2009
Siemens Industry, Inc.
Page 9 of 13
Main Display
(Normal Operation)
The controller is active during main display.
The main display shows:
1. Whether Q.. is On or Off (
= Off,
ν
= On)
.
2. X1 temperature in
°
F or
°
C.
3. Y1 output in volts DC.
4. Day/night settings (
= day,
= night).
5. Reversing valve status (
= Off, R/V = On).
Figure 1. Main Display.
Other displays are available by pressing the
+
▲
button and the various displays are listed below.
1. Setpoints
2. Digital input active or inactive
3. X2 sensor reading
4. X3 sensor reading
5. Q… output status
6. Y1 output in volts DC
7. Application #xx
Figure 2. Setpoint Display.
Changing Setpoint in
Main Display
On entering any of the setpoint displays, the setpoint on display can be adjusted by
pushing the SEL
λ
button. Increase value by pressing the
+
▲
button, or decrease the
value by pressing the
−
▼
button. When the required value is reached, press the SEL
λ
button to save the new value.
Time out
For setpoint adjustment during normal operation the controller will exit the setting after 20
seconds, and return to the main screen. However, for setpoint adjustment in PS mode, there is
no time limit. The controller remains in the PS mode until the user completes the entire process.
NOTE:
•
Changing the heating setpoints to a lower value, set SP-h3 before setting SP-h2
and SP-h1.
•
Changing the cooling setpoints to a higher value, set SP-c3 before setting SP-c2
and SP-c1.
•
The controller will display an ‘out range’ message if SP-h3 > SP-h2>SP-h1 and
SP-c1>SP
-c2>SP-c3.
