compressors and then all load steps
Comp. Switch off
mode:ppCppCppC
R/W
G7
Compressors switch off mode CppCppCpp = fully start
one compressor at a time CCCppppppp= start first all
compressors and then all load steps
CppCppCpp /
CCCpppppp
CppCppCpp
-
Load steps logic:
R/W
G8
Sets whether the load step solenoids are: normally
energised (closed), de-energised (open).
NORMALLY
CLOSED/
OPEN
NORMALLY
CLOSED
-
Minimum compressor
inverter opening:
R/W
G9
Minimum inverter opening setting: This screen can only
be seen if inverters are enabled
%
0¸99.9
0
-
Fans:
R/W
G9
Minimum inverter opening setting:
%
0¸99.9
0
-
PWM speed controller Max.
Triac:
R/W
Ga
When controller pCO1 is used and PWM outputs are
enabled this Triac Max screen can be seen: triac voltage
to fan electric motor is minimum speed. This does not
correspond to effective voltage applied but to a a
calculation unit from pCO1.
%
0¸100
75
-
Triac min.:
R/W
Ga
Min Triac setting: triac voltage to fan electric motor is
minimum speed. This does not correspond to effective
voltage applied but to a a calculation unit from pCO1.
%
0¸100
25
-
Pulse amplitude:
R/W
Ga
Sets pulse amplitude that stands for triac pulse duration:
this represents the triac applied pulse duration in
milliseconds
ms
0¸10.0
2.5
-
Number of compressors
forced on with probe fault:
0
R/W
Gb
If there is a faulty or disconnected suction probe alarm,
it forces no. compressors that are on. They are in any
case controlled by single alarms and by general pressure
switches.
0¸6
1
0
Fan rotation
DISABLES
R/W
Gc
Enabling FIFO rotation first in first out) for fans.
Disabled /FIFO
Disabled
FIFO
Control type
PROPORTIONAL BAND
R/W
Gc
Type of control to be used with fan management:
Proportional band or Dead Zone
Proportional
band/dead band
Proportional
band
DEAD
ZONE
Number of fans forced on
with probe fault:
R/W
Gd
If there is a faulty or disconnected discharge probe
alarm, it forces no. fans that are on. They are in any case
controlled by single alarms and by general pressure
switches.
0…16
2
0
Type of general discharge
pressure switch reset:
R/W
Ge
Type of general high pressure switch reset
AUTOMATIC /
MANUAL
2
AUTOMA
TIC
General settings
System
Parameter
Type
Pos.
DESCRIPTION
U. of M.
Range
Default value
TN
BT
Press keys MENU+PROG;
using the UP/DOWN keys
go to the TIMES chain and
press ENTER
Time between compr.
Switch on requests :
R/W
T0
These parameters are visible when the compressor
setting is dead band control. Time between compressor
switch-on requests
s
0¸999
20
60
40
Time between compr.
Switch off requests :
R/W
T1
Time between compressor switch-off requests (dead
band or proportional band prevent)
s
0¸999
10
20
15
Min. compressor on time :
R/W
T2
Minimum On time of same compressor
s
0¸9999
10
90
Min. compressor off time :
R/W
T2
Minimum Off time of same compressor
s
0¸9999
120
120
Min. time between switch-
ons of different
compressors:
R/W
T3
Minimum time between two ON requests of different
compressors. They prevent simultaneous starts.
s
0¸9999
20
20
Min. time between switch-
ons of same compressor:
R/W
T4
Minimum time between two actual power ups of same
compressor
s
0¸999
360
360
Delay of load steps on
power up:
R/W
T5
This parameter can only be seen is load steps are
configured. Delay between the request and actual
switch-on of load steps
s
0¸999
20
-
Time between fan switch-
on requests :
R/W
T6
Minimum time between two switch-ons of same fan
s
0¸999
2
30
Time between fan switch-
off requests :
R/W
T6
Minimum time between two switch-offs of same fan
s
0¸999
2
30
Fans minimum time
between different switch
ons:
R/W
T7
Minimum time between two fan switch-on request. They
prevent simultaneous starts.
s
0¸999
5
5
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