Carel mRack, Instructions Manual

Page: 28 / 40

µRack
Cod. CAREL +03P220431 rel. 0.0 del 08/09/05 - preliminary version 24
Parameter Type Pos. Display Description UOM Range Default Notes
Display probe R/W U /27
Probe displayed as default
0) probe b1
1) probe b2
2) probe b3
3) probe b4
0 to 3 3
Alarm relay logic: R/W C /28
Logic of the alarm relay.
0) NC
1) NO 0 / 1 1
If alarm relay
enabled
Type of compressor
thermal overload alarm
reset
R/W C /29
Type of thermal overload/generic alarm reset relating to the individual
compressor. Automatic: when the alarm ceases, the compressor
starts again. Displayed only if the parameters are enabled
0) AUTO
1) MANUAL 0 / 1 1
Type of fan thermal
overload alarm reset
R/W C /30
Type of thermal overload/generic alarm reset relating to the individual
fan. Automatic: when the alarm ceases, the fan starts again.
Displayed only if the parameters are enabled
0) AUTO
1) MANUAL 0 / 1 1
Type of general
discharge pressure
switch reset R/W C /31
Type of general high pressure switch reset
0) AUTO
1) MANUAL 0 / 1 0
Prevent high discharge
pressure
R/W C /32 Enable high discharge pressure prevention 0 / 1 0
Set point R/W C /33 High discharge pressure prevention set point bar 0 to 99 18.0
Unit bar/°C psi/°F R/W C /34
Select whether to display the parameters in
0) bar/°C
1) psi/°F
bar /psi 0 / 1 0
Refrigerant conversion R/W C /35
Type of refrigerant used
0) No refrigerant
1) R22
2) R134a
3) R404a
4) R407c
5) R410a
6) R507
7) R290
8) R600
9) R600a
10) R717
11) R744
0 to 11 3
Serial address R/W C /36
Supervisor configuration. Identification number of the µRack board for
the supervisor serial network
1 to 200 1
Delay restart after black
out
R/W I /37 Enable delay at start-up after a black out, with the set time. If 0 no
delay
s 0 to 999 0
Unit On/Off from the
supervisor :
R/W I /38
Enable unit ON/OFF from the supervisor. If unit off from supervisor,
the display shows “--.-”
0) YES
1) NO
0 / 1 1
Unit On/Off by
parameter
R/W U /39
Enable unit ON/OFF by parameter
0) OFF
1) ON
0 / 1 1
New User password: R/W U /40 Used to change the password to access the User branch 0 to 999 22
New Installer password: R/W I /41 Used to change the password to access the Installer branch 0 to 999 44
New Manufacturer
password:
R/W C /42 Used to change the password to access the Manufacturer branch 0 to 999 77
Compressor menu
Min. compressor ON time R/W C C01 Minimum on time for same compressor s 0 to 999 10
Min. compressor OFF
time
R/W C C02 Minimum off time for same compressor s 0 to 999 120
Min. time between
starts of different
compressors : R/W C C03
Minimum time between two start call s for different compressors.
Avoids simultaneous starts
s 0 to 999 20