User Manual

Siemens Building Technologies Application :30 RWD62/30 - 02.2001

HVAC Products RWD62 1

RWD62/30

RWD62 Universal Controller

Application 30

Room temperature control

Hot water control valve

Chilled water control valve

Control (P or PI)

Room temperature control

Proportional control ( 0..10Vdc ) of the hot water valve.

Proportional control ( 0..10Vdc ) of the chilled water valve.

Optional day / night set point adjustment .

........RWD62.......

RWD62/30

Room temperature sensor

Time clock or switch

modulating hot water valve

modulating chilled water valve.

Personal computer

Universal analogue input - main sensor

Auxiliary analogue input

Digital input

Analogue output

Communication port

• Room temperature sensor can be selected as Ni1000, Pt1000, or active sensor.

• Adjustable dead zone with separate heating and cooling set points.

• Adjustable proportional band of analogue output Y1.

• Adjustable proportional band of analogue output Y2.

• Adjustable Integral action function selection and adjustment for Y1 & Y2.

• Day / night set points can be selected via time clock or switch.

Supplemental features

Control

Operating modes

PAGE 1
RWD62/30 RWD62 Universal Controller Application 30 Room temperature control Hot water control valve Chilled water control valve Control (P or PI) Room temperature control Proportional control ( 0..10Vdc ) of the hot water valve. Proportional control ( 0..10Vdc ) of the chilled water valve. X1 S1 Y1 Y2 PC RWD62/30 Optional day / night set point adjustment . Room temperature sensor Time clock or switch modulating hot water valve modulating chilled water valve.
PAGE 2
Description of operation The temperature sensor senses the room conditions and on a fall in temperature the RWD62 via Y1 analogue output modulates the hot water valve as determined by the heating set point and proportional band (XP) setting.
PAGE 3
Main Display The main display shows , a) Y1 output in Volts dc. (0..10V = 0..100% range) b) Y2 output in Volts dc. (0..10V = 0..100% range) c) Whether day or night set point is selected. ( ¤ = day, b = night) d) X1 value ( room temperature) in ° C. . Other displays are available by pressing the + button, and the various displays are listed below in sequence from the main display.