EVCO S.p.A.
c-pro 3 nano CHIL | Application manual ver. 1.0 | Code 144CP3NCHE104
page 59 of 90
8.9 Fan Management
The programme is capable of managing up to two fans, that is one per circuit. You can associate a digital input and a digital safety
output for switch-on/switch-off to each fan.
8.9.1 Fan Mode
Each fan is associated to an operating mode in the mode configuration of the main menu. A fan can have the following modes:
Disabled: The fan has not been configured, the display shows “-” mode.
On: The state display shows “ON”.
Awaiting switch-on: The fan waits for the protection periods to elapse before switching on. The mode display shows “ON”.
Off: The mode display shows “OFF”.
Awaiting switch-off: The fan waits for the protection periods to elapse before switching off. The mode display shows “OFF”.
Alarm: The fan is in alarm. The mode display shows “ALARM”.
Manual: The fan is in manual operating mode. The mode display shows “MANUAL”.
In the maintenance operator menu, with parameters PM41 and PM42, you can read the number of operating hours of the two
compressors. To zero out these hours when required, you can type the value “0” using the SET key.
8.9.2 Fan Periods
Below is a list of all the periods linked to fan management.
Protection Periods
The purpose of these delays is to protect the fans from the different start-up voltages they are subjected to and to prevent
simultaneous start-ups.
PF07 = Minimum period between start-ups of different fans. Determines the minimum period that must elapse between the start-up of
a fan and that of the next fan.
PF08 = Minimum time between two switch-offs of different fans. Determines the minimum time that must elapse between switch-off of
a fan and that of the next fan.
8.9.3 Thermal Switch Inputs
The programme sees to the management of a single thermal switch for each fan configured in the application.
8.10 Circulation Pump Management
On the AIR/WATER or WATER/WATER machines you can control one or two water circulation pumps, set in parameter PG09. The Pump
operation PP01parameter defines how the pump will work:
PP01 = 0. Continuous operation
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