Evco c-pro 3 nano CHIL User Manual

EVCO S.p.A. c-pro 3 nano CHIL | Application manual ver. 1.0 | Code 144CP3NCHE104
page 50 of 90
8.5 Setting the RTC
If the controller is not connected to the mains for several days, the RTC (Real-Time Clock) System clock loses its settings. When the
power is supplied again, you have to reset the RTC alarm (enabled by PA30=1) and set the correct date and time. In this case, when
the machine is started up, the “Set RTC” screen appears to set the time.
After having configured the clock, press OK to update the RTC time. The main application page will be shown. Press OK to confirm
clock alarm (ERTC) reset.
You access the SEt rtc menu on the LED display
day and month are shown on the top display and hour and minute on the bottom display
If you want to change the date, press the Set key:
set the day of the month; press the Set key
set the month; press the Set key
set the year; press the Set key
set the hour; press the Set key
set the minute; press the Set key
If the alarm doesn’t disappear: connect and disconnect the controller from the mains and then manually reset the alarm.
Note: This function is enabled only if parameter PG04=1, that is if the system’s clock is enabled.
8.6 Compressor Control
The control of water temperature (air/water or water/water machine) takes place with the control of the mechanical components, that
is, compressors and/or fans. There are two types of control: lateral band control when you enter the input water temperature and zero
energy band control on the output water temperature.
8.6.1 Lateral Band (LB) Control
The lateral band control is a function of proportional control. The temperature of the cold air is controlled by switching the compressors
on and off.
The figure below shows the behaviour of lateral band control (setpoint, setpoint + proportional band) in the event of summer operation
(chiller). The number of compressors (steps) increases or decreases in function of the input water temperature. In this control mode,
the entire band is moved above the setpoint.
SP
SP + PB
Phases
AF Input temp.
Setting the RTC
Set date/time and apply
with ok

Evco c-pro 3 nano CHIL Specifications

General

Brand	Evco
Model	c-pro 3 nano CHIL
Category	Controller
Language	English