Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Operating modes 03.10.2011
6.2 Effective setpoints as a function of the plant
operating mode (basic type A)
The setpoints are used as a function of the plant operating mode for control or to
switch on or off in sustained mode.
The following table provides an overview of the internal controller setpoints that are
effective in the respective operating mode:
Plant operating mode
Controller 1 Controller 2, 3 IAQ controller
Normal operation
(
Comfort)
Comfort cooling setpoint
Comfort heating setp
2-speed fan
1)
:
Supply air limit val max
Supply air limit val min
Upper setpoint Comfort
Lower setpoint Comfort
Damper setpoint
Fan setpoint
Setpoint fan speed 2
Normal operation
(
Precomfort)
Precomfort cooling setp
Precomfort heating setp
2-speed fan
1)
:
Supply air limit val max
Supply air limit val min
Upper setpoint
Precomfort
Lower setpoint
Precomfort
Damper setpoint
Fan setpoint
Setpoint fan speed 2
Upon switch-on of IAQ
controller
2)
:
Damper setpoint
Fan setpoint
Setpoint fan speed 2
Sustained mode
(
Precomfort)
Comfort cooling setpoint
Comfort heating setp
2-speed fan
1)
:
Supply air limit val max
Supply air limit val min
Upper setpoint Comfort
Lower setpoint Comfort
Upon switch-on of
controller 1/2/3
3)
:
Outside air damper= 0%,
Speed-controlled fan =
min. speed
Recirculated air mode
(
Precomfort)
Precomfort cooling setp
Precomfort heating setp
2-speed fan
1)
:
Supply air limit val max
Supply air limit val min
Upper setpoint
Precomfort
Lower setpoint
Precomfort
Outside air damper= 0%,
Speed-controlled fan =
min. speed
Fan control =
supply or supply/extract
air
Upon switch-on of IAQ
controller
2)
:
Damper setpoint
Fan setpoint
Setpoint fan speed 2
Sustained mode
(
Economy)
Comfort cooling setpoint
Comfort heating setp
2-speed fan
1)
:
Supply air limit val max
Supply air limit val min
Upper setpoint Comfort
Lower setpoint Comfort
Upon switch-on of
controller 1/2/3
3)
:
Outside air damper= 0%,
Speed-controlled fan =
min. speed
Plant OFF
(
Economy /
Protection)
- - -
1)
2-point control of 2nd speed for 2-speed fans: This function is available only for room/supply air or
extract/supply air cascade control (see section 11.6.3)
2)
Upon switch-on of sustained mode by the IAQ controller, damper or fan control is according to the
indicated setpoints
3)
Upon switch-on of sustained mode controller1 or controller2 or controller3, control of damper or valve
is fixed (i.e. without control functions)