Cod. C
4.7
4.7.1
The ha
mediu
speed
Below
This ty
1
2
4.7.2
Low pr
Low pr
High p
Tempe
Tempe
4.8
The fo
Time b
Param
This ap
Minim
Sets th
R
Cm
CAREL +03P220
Special M
Managemen
ardware features o
m installations, ha
managed by the
is an example dia
ype of system can
1.
the compres
2.
the max num
allocated to
Probes and
Function
ressure circuit 1
ressure circuit 2
pressure circuit dis
erature 1
erature 2
Compres
llowing is a list of
between stop req
eter C06 sets a st
pplies both in the
mum compressor
he minimum time
mp
0431 rel. 2.2 date
MT-LT units
nt of compresso
of the µRack contr
aving the advanta
speed controller o
agram:
be controlled by
ssors must have th
mber of compress
probe LP1, and th
values controlle
n
scharge
sor time se
all the time param
quests with HP p
top delay between
dead band and in
ON time
the compressors
Fig 4.f
TMinOn
Flo
d 10/02/12
s
r racks with LT a
roller can be adap
ge of being comp
or external pressu
µRack in the follo
he SAME CAPACIT
sors in the MT uni
he other compres
ed
B4 (pressure)
B1 (pressure)
B1 (pressure)
B2 (temperatur
B2 (temperatur
B3 (temperatur
ettings
meters used for co
prevent active
n one compressor
n the proportiona
stay on, that is, o
oating condenser SET
Condenser
Liquid re
nd MT circuits a
pted for the contro
pact and offering l
re switches, and s
owing conditions:
TY
it and LT unit is 4.
sor rack to probe
Input
re)
re)
re)
ompressor manag
r and the next, if th
l band.
nce activated, mu
T[s]
T[s]
Dou
com
eceiver
16
nd condenser on
ol of a special type
low cost solutions
separate managem
Fig 4.e
. There can theref
LP2.
C
LP1
LP2
HP
B2
B3
gement
(and not
he high pressure
ust remain on for t
Ke
R
Cm
TM
T
uble circuit
mpressor unit
µRa
nly.
e of compressor r
s. These are comp
ment of the comp
e
fore be combinatio
ode on display
capacity contro
prevention (preve
the time set by th
ey:
Comp
mp
Comp
MinOn
Minim
Time
ac
ack that is becom
ressor racks with
pressors in the MT
ons of 2+2, 3+1,
Type of un
A- Single circ
B- Compress
A -B
B
A (press – t
B (only tem
A (AUX pro
B (not used
Always pres
ol)
.
ent) function is ac
is parameter (par
ressor call
ressor
mum ON time
ming more widely
only the condens
T and LT units.
1+1. One compre
nit:
cuit compressor rac
sor racks with 2 circ
temp)
mp)
obe)
d)
esent
ctive.
rameter C01).
MT display cabinet
group
LT display cabinet
used in small and
sing section, and w
essor rack will be
k
uits MT-BT
T
µRack
d
with fan
Tab 4.b
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