User Manual

Siemens Building Technologies Application :37 RWD62/37 - 05.2001
HVAC Products RWD62 1
RWD62/36
RWD62 Universal Controller
Application 36
W / S mode selection - analogue
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.
Winter/Summer selection of heating or cooling operation of Y1 via analogue input
Optional day / night set point adjustment .
S1
X1
X2
D1
Y1
Y2
CP
........RWD62.......
M1
Y1
RWD62/37
X1
X2
S1
Y1
Y2
PC
Room temperature sensor
Outside air temperature sensor
Time clock or switch
Modulating hot / chilled water valve
Modulating chilled water valve.
Personal computer
X1
Universal analogue input - main sensor
Auxiliary analogue input
Digital input
Analogue output
Analogue output
Communication port
T
Y2
T
• 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.
• Duct temperature sensor can be selected as Ni1000, Pt1000, or active sensor.
• Outside air temperature sensor provides the analogue input for winter / summer
selection.
• Day / night set points can be selected via time clock or switch.
• Winter / summer selection of heating and cooling mode of the Y1 output as selected
by analogue input into auxiliary input X2 sensing outside air temperature.
• The water supplied to the coil must be changed from heating water to chilled water
and interlocked with the winter / summer change over function
Supplemental features
Control
Operating modes