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Application
The universal 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.
The second analogue input can be used for the following applications:
•
PI Limiter function ( absolute and relative limit)
•
Remote setpoint function
•
Setpoint compensation
•
Winter / summer mode changeover ( analogue or digital input ) ( reversal of heating / cooling output)
•
Cascade control function
•
Maximum priority for cooling/dehumidifying
The separate digital input is provided for day/night mode changeover
The RWD32/RWD82 controllers are intended for either DIN rail mounting in a switchboard or screw mounting with protective
enclosure.
Desired output configuration and auxiliary function must be entered for initial setup. Refer to Service (PS) mode sequence.
Application No. Summary
(H = Heating, C = Cooling, R
= Reverse Acting, D = Direct
Acting)
(The 1st digit = Main Control
Loop, The 2nd digit =
Auxiliary Control Loop)
Auxiliary Loop
#x0 No auxiliary
#x1 Remote Setpt
#x2 Absolute limiter
#x3 Relative limiter
#x4 Compensation shift
#x5 Cascade
#x6 Win/Sum digital
#x7 Win/Sum analog
#x8 Max. priority
#x9 Main loop (active input)
Note:
Application sheets for the listed applications are available from your local supplier.
e.g. RWD32 application 30, quote RWD32/30
Page 2
8-Jun-01
Main
Loop
#1x
#2x
H+H or R+R
H+H or R+R
depend.
independ.
#10
#20
#11
#21
#12
#22
#13
#23
#14
#24
-
-
-
#26
-
#27
-
-
#19
#29
O3341(RWD32) V14.doc
#3x
H or R 3-
#4x
C+C or D+D
position
H+C or R+D
#30
#40
#31
#41
#32
#42
#33
#43
#34
#44
#35
-
#36
#46
#37
#47
-
-
#39
#49
O3341A031En2
#5x
#6x
C+C or D+D
depend.
independ.
#50
#60
#51
#61
#52
#62
#53
#63
#54
#64
-
-
-
-
-
-
-
-
#59
#69
Siemens Building Technologies
#7x
C or D 3-
position
#70
#71
#72
#73
#74
#75
-
-
#78
#79
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