EVCO S.p.A.
11.3
Gestione secondo compressore
If one of the realy outputs is configured as second
When regulating with 2 compressors, the differential
differential for each compressor is “r0/2”.
When regulation requires the activation of both compressors, the second compressor will be activated wi
by parameter C10.
11.4
Pump down solenoid valve management
This function is only available if one of the relays is configured as pump down
The pump down solenoid valve is activated in parallel with the compressor.
When the compressor is set to switch off, the pump down solenoid valve is deactivated first and after the number of
seconds set by the u12 parameter, the compressor is deactivated. This function is only available if parameter u2=0.
11.5
Evaporator fan management
The evaporator fan is managed in a modulating mode with the PWM analogue output (to be combined with the
EVDFAN1 cutting-phase module) or in an On
outputs (PWM or relay) work independently one of another.
If the evaporator fan is managed through a PWM analogue output, the fan speed can be set for each phase.
fan is switched on, the controller will manage a speed (F21) and a start
will modulate based on the speed set for the ongoing phase
determine the fan minimum and maximum speed respectively.
Calibration procedure for an evaporator fan managed
In order to make the cutting-phase adjustment suitable to all
perform a manual calibration of the evaporator fan.
1.
Set F19 to 0% and F20 to
2.
Perform a manual cycle and,
which the fan stops and the maximum percentage above which the fan
Vcolor 869
| Installer manual ver. 1.0
page 59 of 92
Gestione secondo compressore
is configured as second compressor, compressor 1 and 2 are managed as follows
When regulating with 2 compressors, the differential set by parameter r0 will be halved
“r0/2”.
When regulation requires the activation of both compressors, the second compressor will be activated wi
Pump down solenoid valve management
one of the relays is configured as pump down
The pump down solenoid valve is activated in parallel with the compressor.
switch off, the pump down solenoid valve is deactivated first and after the number of
seconds set by the u12 parameter, the compressor is deactivated. This function is only available if parameter u2=0.
Evaporator fan management
in a modulating mode with the PWM analogue output (to be combined with the
phase module) or in an On-Off mode if one of the relays is configured as evaporator fan
WM or relay) work independently one of another.
evaporator fan is managed through a PWM analogue output, the fan speed can be set for each phase.
fan is switched on, the controller will manage a speed (F21) and a start-up time (F22). After
eed set for the ongoing phase within the range set by parameters F19 and F20, which
determine the fan minimum and maximum speed respectively.
an evaporator fan managed by the cutting-phase module
e adjustment suitable to all 230 VAC single-phase motors, it is recommended to
perform a manual calibration of the evaporator fan.
100%
Perform a manual cycle and, while modulating the fan speed, check the minimum percentage below
which the fan stops and the maximum percentage above which the fan runs at the maximum speed
ver. 1.0 | Code 144VC869E104
are managed as follows:
by parameter r0 will be halved: that means that the
When regulation requires the activation of both compressors, the second compressor will be activated with a delay set
Pump down solenoid valve management
switch off, the pump down solenoid valve is deactivated first and after the number of
seconds set by the u12 parameter, the compressor is deactivated. This function is only available if parameter u2=0.
in a modulating mode with the PWM analogue output (to be combined with the
Off mode if one of the relays is configured as evaporator fan. The two
evaporator fan is managed through a PWM analogue output, the fan speed can be set for each phase. When the
up time (F22). After F22 time elapses, the fan
within the range set by parameters F19 and F20, which
tors, it is recommended to
check the minimum percentage below
runs at the maximum speed.
