Carel ir33+

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