Carel ir33+ small wide User Manual page 54

ENG
ON
CP2
OFF
ON
CP1
D
OFF
rd/2
St
Key
Sv Virtual probe
CP1 Compressor 1
t time
Examples of operation:
ON
REQ1
OFF
ON
REQ2
OFF
ON
CP1
OFF
ON
CP2
OFF
ON
REQ1
OFF
ON
REQ2
OFF
ON
CP1
OFF
ON
CP2
OFF
ir33plus +0300028EN rel. 1.1 - 05.05.2017
D
Sv
rd/2
Fig. 11.c
CP2 Compressor 2
rd Diff erential
St Set point
EXAMPLE 1
t
t
t
t
Fig. 11.d
EXAMPLE 2
t
t
t
t
Fig. 11.e
ON
REQ1
OFF
ON
REQ2
OFF
ON
CP1
OFF
ON
CP2
OFF
ON
REQ1
OFF
ON
REQ2
OFF
ON
CP1
OFF
ON
CP2
OFF
Key
REQ1 compressor 1 call
REQ2 compressor 2 call
t time
54
EXAMPLE 3
t
t
t
t
Fig. 11.f
EXAMPLE 4
t
t
t
t
Fig. 11.g
CP1 compressor 1
CP2 compressor 2