9
4
C
ONTROLLER PARAMETERS
4.1
U
NIT EQUIPMENT
Setting a program to the CU24V1 controller is done remotely using the RMC20 panel. Before setting a
program, the unit should be switch off (In the display the message "UNIT IS OFF" should be displayed).
You can choose from a ready-made application or user application that allows you to manually
configure the application by editing individual options.
Name
Default value
Options
Descriptions
AP
USER
USER
User application:
Manual adjustments by users
W-
001 ÷ E
-012
Application for supply-extraction units
4.1.1
S
ELECTING THE TYPE OF HEATING AND COOLING
Beware:
The bellow settings are valid when the heat pump mode at page
#11
of the menu is off, it means the
following setting is done:
Heat pump: No
Heating:
•
water
: Water coil heater with control signal at Y3 output
•
electr
: Electric heater with control signal at PWM output P2
•
none
: No heater
Outputs Y3 and P2 of the CU24V1 controller work independently of the type of heater, while the E1
input, depending on the type of heater, functions as an anti-freeze alarm or a high temperature alarm..
Heating
CU24V1 outputs
CU24V1 input
Y3
P2
U1-U2
E1
water
0-10V:
heating
control
PWM output
for electric
heater
230 VAC: Pump start.
Frost alarm of water
heating coil
electr
0-10V:
heating
control
PWM output
for electric
heater
230 VAC: Enable working for
electric heaters.
Hi temperature alarm
of electric heater
Cooler:
•
Water
: Water coil cooling with smooth control in PI integration mode.
•
agregat-1
:
Single stage cooling unit with ON/OFF control
•
agregat-2
:
Two-stage cooling unit with control outputs at Q3 and Q4 in PI integration
mode
•
None
:
No cooler
The Y4 output of the CU24V1 is active regardless of the type of cooling (water, chiller-1, or chiller-2)
and can be used to control the valve or chiller. On the other hand, the output Q3 is used to control the
pump or the first stage of the chiller depending on the selection, and Q4 confirms the cooling mode or
controls the second stage of the chiller.
