Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Appendix 03.10.2011
 Automatic changeover of run priority in case of fault, settable
changeover time (overlapping or with delay prior to restart of
second pump)
 Acquire number of operating hours
Modulating outputs
 Section 10.3
Configuration Functions
B
y1 y2 y3
A...D
 Modulating output A…D (Y)
 Input
 Start preset
For continuous signals DC 0…10 V, e.g. for valve control.
 Load signal from sequence controller (from max 3 sequences with
maximum selection)
 Settable "Positioning signal min" and "Positioning signal max".
 Settable inversion
 Enable via start input
HR
 Section 10.4
Configuration Functions
12 1 2
Y
y1 y2 a

xa a
Q
HR
MECH
CC....................
 Output (Y)
 MECH input 1
 MECH input 2
 Efficiency 1
 Efficiency 2
 Cooling coil valve (modulating,
switching)
To control heat recovery equipment.
 Configuration always with "heating" load signal from sequence
controller (from max 2 sequences with max selection)
 Maximum economy changeover, optionally with 1 input (digital or
analog) or 2 inputs (differential measurement)
 Efficiency supervision with sensor in supply air after HR
equipment or with sensor in exhaust air
 HR equipment supports cooling when cooling coil valve opens
(also in case of dehumidification)
 Settable "Positioning signal min" and "Positioning signal max"
 Settable inversion
Mixed air damper
 Section 10.5
Configuration Functions
12
y1 y2
Y
a
x
a
TMil
Damper
MECH
CC.........
 Output (Y)
 MECH input 1
 MECH input 2
 Cooling coil valve
 Mixed air temperature (TMil)
To control mixed air dampers.
 Configuration of sequence controller (from max 2 sequences with
max selection)
 Output signal DC 0…10 V (closed / open refer to outside air
damper)
 Control mixed air temperature
 Maximum economy changeover, optionally with 1 input (digital or
analog) or 2 inputs (differential measurement)
 Damper supports cooling when cooling coil valve opens (also in
case of dehumidification)
 Selectable start operation
 Settable "Positioning signal min" and "Positioning signal max",
max position can be shifted by outside temperature
Step switch
 Section 10.6, 10.7
Configuration Functions
123
4
y1 y2
x
QQ Q
Q
Y
y3
Step
switch 1
Linear
Binary
Release
Connect 1+2
 Step 1 to ... (Q...)
 Modulating output (Y)
 Release external
 Connect 1+2
To control a multistage aggregate.
 Configuration of each step in dependence of load signal from
sequence controller (from max 3 sequences with max selection)
 Selection
 Linear step switch to switch equal-size steps or aggregates with
equal output for lead/sequential run (run priority changeover)
 Binary step switch to switch binary stepped aggregates.
 Step switches can be cascaded
 Release external of the step switch with digital input, e.g. flow