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Siemens
Universal Controllers RLU2…
CE1P3101en
Building Technologies
Appendix
29.08.2008
Input identifiers
(cont
’d)
X1
x Y
SI
G
N
AL
Y
LABEL
FRST
Frost protection
Frost protection function optionally for sequence controller 1 or 2:
•
2-stage frost protection on the water side (input LG-Ni1000), PI control
when plant is off
•
2-stage frost protection on the air side (input DC 0…10 V = 0…15 °C)
•
Frost protection unit
X1
x Y
SI
G
N
AL
Y
LABEL
REM1
[Controller 1] remote setpoint
adjuster
[Controller 2] remote setpoint
adjuster
Remote setpoint adjuster,
relative
•
REM 1: Absolute for sequence controllers 1 to 2 (0…1000
Ω
or DC 0…10
V)
•
REL: Relative for room temperature in basic type A, sequence controller 1
(1000…1175
Ω
= -3…+3 K)
Control functions
CTLOOP x
(controller)
Configuration
Functions
y p y p
y p y p
x
x
Q
SEQLIM CAS/CON
DV
A
LM
1
CTLOOP 1
SE
Q
2 Y
SE
Q
2 P
SE
Q
1 Y
SE
Q
1 P
SE
Q
4 Y
SE
Q
SE
Q
4 P
5 Y
SE
Q
5 P
A
CAS
LIM
Controller 1, basic type A:
•
General limiter (LIM)
•
Sequence limiter (SEQLIM)
•
Cascade / constant changeover
input (CAS/CON)
•
Sequence S1…S5 load (y)
•
Sequence S1…S5 pump (p)
•
Deviation message output (DV
ALM)
•
Strategy CAS/LIM
Sequence controller, can be used as a P-, PI or PID controller.
If supply air temperature (casc.) configured, can be used as:
•
Room-supply air cascade controller with supply air high/low limit
control
•
Supply air temperature controller
•
Room temperature controller (supply air configured but not
connected)
If supply air temp. (casc.) not configured, can be used as:
•
Room temperature actual value controller
Controller functions:
•
Assignment of sequences can be configured, a load output
(modulating output, variable step switch, linear step switch, binary
step switch) and a pump can be connected)
•
Heating sequence S1 and S2 (\\_)
•
Cooling sequence S4 and S5 (_//)
•
General limiter acts on all sequences.
•
Sequence limiter, adjustable as min. or max. limiter, acts on a settable
sequence (closing)
•
Summer / winter compensation with outside temperature
•
Sequence locking according to the outside temperature
•
Fault status message for inadmissible control deviation can be
activated
y p y p
y p y p
x
x
x
x
DI
FF
x
Q
MA
IN
LIM SEQLIM
SHIFT
1
CTLOOP 1
SE
Q2 Y
SE
Q2 P
SE
Q1 Y
SE
Q1 P
SE
Q4 Y
DV
A
L
SE
Q4 P
SE SE
M
Q5 Y Q5 P
U
Controller 1, basic type U;
Controller 2, basic types A and U:
•
Main controlled variable
•
Differential input (DIFF)
•
Universal shift (
)
•
General limiter (LIM)
•
Sequence limiter (SEQLIM)
•
Sequence S1…S5 load (y)
•
Sequence S1…S5 pump (p)
•
Deviation message output
(DV ALM)
Universally usable sequence controller, as a P-, PI or PID controller.
•
Assignment of sequences can be configured, a load output
(modulating output, variable step switch, linear step switch, binary
step switch) and a pump can be connected)
•
Heating sequence S1 and S2 (\\_)
•
Cooling sequence S4 and S5 (_//)
•
Simple controller or differential controller
(setpoint linkable to sequence controller 1)
•
General limiter acts on all sequences
•
Sequence limiter, adjustable as min. or max. limiter, acts on a settable
sequence (closing)
•
Universal
shift
•
Locking the sequence according to the outside temperature
•
Fault status message for inadmissible control deviation can be
activated
