µRack
Cod. CAREL +03P220431 rel. 2.2 dated 10/02/12
31
Parameter
Type Pos. Display Description
UOM
Range
Default
Notes
Fan inverter differential
R/W U
r19 Fan inverter differential
bar
°C
0 to 20.0
0 to 20.0
3
18
Only if the inverter if
enabled
Fan rotation
R/W C r20
Type of fan rotation.
0) NO ROTATION
1) FIFO
0/1
1
For single circuit only
Fan control
R/W C r21
Type of fan control:
0) Proportional
1) Propor integral
2) Dead band
0 to 2
0
For single circuit only
Integral time (P+I only)
R/W C
r22 Integral time with P+I control
s
0 to 999
600
Only if PI
Time between fan start call
R/W C
r23 Minimum time between two successive calls to start different fans
s
0 to 999
2
xx
Time between fan stop call
R/W C
r24 Minimum time between two successive calls to stop different fans
s
0 to 999
2
xx
Min fan set point
R/W C
r25 Set the lower limit of the fan set point
bar
°C
0 to r26
-50 to r26
1.0
-31.2
Max fan set point
R/W C
r26 Set the upper limit of the fan set point
bar
°C
r25 to 40.0
r25 to 150
25.0
55.3
Fan inverter speedup time
R/W C
r27 Fan inverter speedup time
s
0 to 999
2
Only if the inverter is
enabled
Inverter ramp up time
R/W
I
r28 Set the time taken by the inverter to reach full load
s
0 to 999
10
Only if the inverter is
enabled
Minimum fan inverter output R/W C
r29 Set the minimum operation of the fan inverter
%
0 to r30 0
Only if the inverter is
enabled
Maximum fan inverter output R/W C
r30 Set the maximum operation of the fan inverter
%
r29 to 100
100
Only if the inverter is
enabled
Triac impulse duration
R/W C
r31 Duration of the impulse applied to the triac
ms
0 to 10
0
Only if the inverter is
enabled
Enable floating condenser
control
R/W C r32
Enable the floating condenser control
0) NO
1) YES
0 to 1
0
Condensing Delta T
R/W C
r33 Temperature difference for floating condenser control
-40 to 150
10
Compressor management
offset set point
R/W I r34
Compressor bar auxiliary set point offset.
Used when changing the set point from digital input
-99.9 to 99.9
0
Alarm menu
HP suction 1 alarm
R/W
I
A01 Suction probe 1 alarm: high threshold setting
bar
A03 to /19
9.3
HP suction 1 delay
R/W
I
A02 Suction probe 1 alarm: delay setting
s
0 to 999
60
LP suction 1 alarm
R/W
I
A03 Suction probe 1 alarm: low threshold setting
bar
/17 to A01 0
LP suction 1 delay
R/W
I
A04 Suction probe alarm: delay setting
s
0 to 999
60
HP suction 2 alarm
R/W
I
A05 Suction probe 2 alarm: high threshold setting
bar
A07… /20
20
For two circuits only
HP suction 2 delay
R/W
I
A06 Suction probe 2 alarm: delay setting
s
0 to 999
60
LP suction 2 alarm
R/W
I
A07 Suction probe 2 alarm: low threshold setting
bar
/18 to A05
0
For two circuits only
LP suction 2 delay
R/W
I
A08 Suction probe alarm: delay setting
s
0 to 999
60
HP discharge alarm
R/W
I
A09 Discharge probe alarm: high threshold setting
bar
°C
A10 to /20
A10 to 150
20.0
45.8
LP discharge alarm
R/W
I
A10 Discharge probe alarm: low threshold setting
bar
°C
/18 to A09
-50 to A09
0
-50
Discharge delay
R/W
I
A11 Discharge probe alarm: delay setting
s
0 to 999
60
Compressor thermal delay
R/W
I
A12 Compressor thermal overload alarm: delay setting
s
0 to 999
0
HP prevention
Prevent time 1
R/W
I
A13 Time in which start calls are ignored after prevent HP
m
0 to 99
5
Only if the prevent is
enabled
HP prevention
Prevent time 2
R/W I A14
If two prevent alarms occur within this time, an excessive prevent frequency
alarm is generated
m
0 to 999
6
Only if the prevent is
enabled
HP prevention
Prevent time 3
R/W I A15
If no prevent alarms occur in this period, the high prevent frequency alarm is
automatically reset
m
0 to 99
30
Only if the prevent is
enabled
High temp. probe threshold:
B2
R/W
I
A16 High temperature threshold, probe B2
°C
-40 to 150
100
High temp. probe threshold:
B3
R/W
I
A17 High temperature threshold, probe B3
°C
-40 to 150
100
Delay liquid level alarm
R/W
I
A18 Set the liquid level alarm delay from multifunction input
m
0 to 500
60
Reset ALARMS
R/W U A19
Reset the alarms with manual reset
0) NO RESET
1) RESET
0/1 0
Alarm signal delay
R/W
I
A20 Set alarm signal delay
s
0 to 999
1
Exchange auto->man LP 3
alarms
R/W I A21
On the 3rd activation, within the set time, the low pressure alarm from
pressure switch changes from automatic to manual reset.
m
0 to 999
10
OFF due to probe
disconnected
R/W I A22
Enable unit OFF due to probe disconnected/alarm
0) NO
1) YES
0/1 0
Maintenance menu
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