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Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Appendix 29.08.2008
Input identifiers (cont’d)
X1
x
Y
SIGNAL 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
SIGNAL 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
yp yp yp yp
x
x
Q
SEQLIM CAS/CON
DV ALM
1
CTLOOP 1
SEQ2 Y
SEQ2 P
SEQ1 Y
SEQ1 P
SEQ4 Y
SEQ
SEQ
4 P
5 Y
SEQ5 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
yp yp yp yp
xxxx
DIFF
x
Q
MAIN
LIM SEQLIM
SHIFT
1CTLOOP 1
SEQ2 Y
SEQ2 P
SEQ1 Y
SEQ1 P
SEQ4 Y
DV AL
SEQ4 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
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