Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Appendix 03.10.2011
Data acquisition
Trend
 Section 9.1
Configuration Functions
 Input
The trend is used to log the progression of signals.
 4 independent trend channels
 Logging of local inputs, room temperatures and outside
temperature from the bus
 Simultaneous display of 2 channels
 Views: 8-minutes, 8-hours, 24-hours and 6-day history
Meters
 Section 9.2
Configuration Functions
1
2
i
i
Meter
 Input  Acquire pulse sources and display cumulated values; selectable
unit, valency, presentation, etc.
Aggregates
Supply air fan
extract air fan
 Section 10.1
Configuration Functions
xxxx
QQQ
2
1
12
V
12
dx d

p
a
Y
Start Stop
Speed
Duct pressure (DP stat)
Vol flow (DP dyn)
Vol flow (linear 0..10 V)
Supply
Speed 1(1Q)
Speed 2 (2Q)
 Speed (Y)
 Precommand output ( )
 Precommand checkback ( )
 Pressure sensor (

p
)
 Flow signal (
V
)
 Overload signal ( )
 Start condition 1 / 2
 Stop condition 1 / 2

Can be used for single-speed, 2-speed or speed-controlled fans
 Possible types of control for variable-speed fans:
 Assign fixed speeds for 1 or 2-speed operation
 Control to constant duct pressure (static pressure measurement)
 Control to constant volumetric flow for 1 or 2-speed operation
(2 setpoints, dynamic pressure measurement)
 Control to constant volumetric flow for 1 or 2-speed operation
(2 setpoints, linear volumetric flow signal measurement)
 2. Speed can be switched via time switch (time switch priority
speed 2), room temperature controller or indoor air quality
controller;
speed 2 can be locked at low outside temperatures
 Recirculated air operation possible
 Configurable precommand output and checkback signal
 Settable start delay, separate for supply air and extract air fan
 Fan release relay and smoke extraction with fans (see "Faults")
 Fans can be directly switched on/off via start and stop conditions
(stop of supply air fan causes plant to stop)
 Acquire number of operating hours
Pump / twin pumps
 Section 10.2
Configuration Functions
p1 p2
x
xxx
QQQ
2
1
12
V AB
B
dxdd
/
p3
Pump 1
On
Start Stop
 Pump A
 Pump B
 Precommand output ( )
 Precommand checkback ( )
 Flow signal (
V
)
 Overload signal ( )
 Start condition 1/2
 Stop condition 1/2
 Optg mode-dep ON (
/
On
)

Usable as single or twin pump (e.g. heating coil pump) or as main
pump (e.g. chilled water primary controller)
 ON via load signal from sequence controller (max 2 sequences
with max selection, settable switching points), ON by operating
mode (operating mode-dependent ON), OT-dependent ON
(settable)
 Settable switch-off delay
 Settable pump kick
 Configurable precommand output and checkback signal
 Pump can be directly switched on/off via start and stop conditions
 Selectable run priority
 Changeover of run priority in automatic operation once a week
(same time as the pump kick)