Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Appendix 03.10.2011
monitoring for electric heating coil
 Settable fan overrun time, e.g. for connected electric heating coil
 Modulating output can be configured, same function as
"Modulating outputs"
 Settable locking time (restart delay) (time applies to all steps)
123456
y1 y2 x
QQQQQQ Y
y3
Step switch 4 (var)
Release
 Step 1 to ... (Q...)
 Modulating output (Y)
 Release external
To control a multistage aggregate.
 Depending on the load signal from the sequence controller (max.
3 sequences with maximum selection), each step can be assigned
a switch-on and switch-off point; the switching points may overlap
and can be inverted (ON < OFF)
 Release external of the step switch with digital input, e.g. flow
monitoring for electric heating coil
 Settable fan overrun time, e.g. for connected electric heating coil
 Configurable modulating output
 Settable locking time (restart delay) (time applies to all steps)
Logic functions
 Section 10.8
Configuration Functions
12 21
xx xx
A
B
3
x
C
Q
d
Logic 1
 Input
 Logic function
 Operation selector
 Relay output
 Digital output

4 logic blocks, logic 1 to 4
 Generation of digital signal from continuous input signals
 Selectable logic for logic A, B and C
 Selectable operation
 Delay times can be set for output signal
 Selectable time formats
Heat demand
 Section 25
Configuration Functions
S1 S1 S1
S2 S2
x
S2
S3
QY
d
123
Controller
Supervision
Heat demand

Controllers 1 to 3
 Supervision
 Heat demand modulating
 Heat demand relay
Plant functions when heat is requested.
 Setting giving the sequences where heating valves are configured
 Supervision: When heat is requested, but no heat is available
after a set period of time, a fault message can be triggered, plant
stop can be selected as needed. Digital input or temperature
sensor
 Heat demand relay or modulating output to route heat demand
 Heat demand can also be transmitted via bus, (see
Communication)
Refrigeration demand
 Section 26
Configuration Functions
x
Kältebedarf
QY
d
S4 S4 S4
S5
123
Cooling demand
Supervision
Controller

Controllers 1 to 3
 Supervision
 Refrig demand modulating
 Refrigeration demand relay
Plant functions when refrigeration is requested.
 Setting giving the sequences where cooling valves are configured
 Supervision: When refrigeration is requested, but no refrigeration
is available after a set period of time, a fault message can be
triggered, plant stop can be selected as needed. Digital input or
temperature sensor
 Refrigeration demand relay or modulating output to route
refrigeration demand
 Refrigeration demand can also be transmitted via bus, (see
Communication)