Bus For Master/Slave Function; Bus Connection; Addressing Procedure For The Units - Carrier CCU Manual

12 - BUS FOR MASTER/SLAVE FUNCTION

12.1 - Bus connection

BETWEEN THE VARIOUS UNITS
CCU CONTROLLER MASTER
J9
ON
OFF 1
COM2
ON
OFF
COM2
COM2: Bus polarisation switch
- Master unit = ON
- Slave unit = OFF

12.2 - Addressing procedure for the units

The first time the power is switched on, all the boards are initialised with the parameter P215 "UNIT NUMBER ON CONSOLE" having
the value 1.
Connection diagram
Unit 1
Controller
CCU CONTROLLER
(P215 = 1)
On the controller for unit 1, in the "CONFIGURATION OF NUMBER OF UNITS" menu, "OPERATING CONFIGURATION", adjust the
parameter "C01 NUMBER OF UNITS": (3 in the example).
Addressing units
The parameter P215 must be set on each unit.
Position the cursor opposite unit 1 and press the "ENTER" key'.
In the "PARAMETERS"', "SETTINGS PARAMETERS" menu, set parameter P215 to the value corresponding to the unit number.
2 3 3
CCU CONTROLLER SLAVE
J9
1 2 3
Shunt to be removed from connector J2
J9
CCU CONTROLLER SLAVE
J9
ON
OFF 1
COM2
Terminals 1 and 7
J9
Unit 2
Controller
CCU CONTROLLER
(P215 = 2)
2 3
Multiconductor cables shielded,
j a c k e t e d ( s h i e l d i n g w i t h
braiding), length between the 1st
and the last CCU CONTROLLER:
1000 m
1: Line A or +
2: Line B or -
3: Earth
Unit 3
Controller
CCU CONTROLLER
(P215 = 3)
J9
31