Page 2 8-Jun-01 O3341(RWD32) V14.doc O3341A031En2 Siemens Building Technologies
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)
Main
Loop #1x
H+H or R+R
depend.
#2x
H+H or R+R
independ.
#3x
H or R 3-
position
#4x
H+C or R+D
#5x
C+C or D+D
depend.
#6x
C+C or D+D
independ.
#7x
C or D 3-
position
Auxiliary Loop
#x0 No auxiliary #10 #20 #30 #40 #50 #60 #70
#x1 Remote Setpt #11 #21 #31 #41 #51 #61 #71
#x2 Absolute limiter #12 #22 #32 #42 #52 #62 #72
#x3 Relative limiter #13 #23 #33 #43 #53 #63 #73
#x4 Compensation shift #14 #24 #34 #44 #54 #64 #74
#x5 Cascade - - #35 - - - #75
#x6 Win/Sum digital - #26 #36 #46 - - -
#x7 Win/Sum analog - #27 #37 #47 - - -
#x8 Max. priority ------#78
#x9 Main loop (active input) #19 #29 #39 #49 #59 #69 #79
Note: Application sheets for the listed applications are available from your local supplier.
e.g. RWD32 application 30, quote RWD32/30
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