● Check the cables and if necessary, use cables with a greater wire cross-
sectional area.
● If there is no voltage present, the bus has short-circuited.
● If the voltage is negative, the polarity is incorrect.
Bus addresses
Each device in the bus has its own address. Set the device address from the user
interface itself (line 6600).
● The device address of the master controller is always 1.
● Slave controllers can have any free address between 2 and 16.
● Do not use addresses 8 and 5, since these are reserved for the OCI700 connection
cable and a remote connection device.
Enable the cascade by using the user interface to change each slave controller’s
device address to any free address (such as 3) and connecting the slave controller to
the bus. Once the slave addresses have been changed and the bus cable connected,
the cascade function will be enabled, and the cascade menu will be displayed in the
master controller.
After the cascade has been enabled, make the necessary changes in the master and
slave controllers’ settings. The settings are presented in the table below. An example of
a cascade consisting of four RE96 heat pumps is presented in the figure at the end of
this section.
Menu
Line
Line name
Master
(S0/G1)
Slave 1
(S0/G2)
Slave 2
(S0/G2)
LPB
6600
Device
address (G)
1
2
3
LPB
6601
Segment
address (S)
0
0
0
LPB
6640
Clock use
Master
Slave with remote setting Slave with remote setting
Configuration
5710
Heating
circuit 1
On
Off
Off
Configuration
5800
Heat source
Brine
Externally brine (If
a common brine
circuit pump is in use)
Externally brine (If
a common brine
circuit pump is in use)
Slave controllers’ unused BX inputs and outputs can be disabled, but this is not
necessary.
If there is a remote access device in the bus, it should be set as the master for clock
use, and the master controller’s line 6640 setting should be set to
Slave with remote
setting
. This way, the entire system’s time will be automatically kept up to date
through the remote access device and, if necessary, the time can be changed from any
controller.
Bus segments
If necessary, the bus can be divided into several segments. The device addresses
within these segments are independent from the rest of the system.
Select the segment ID from line 6601.
● The address for the segment’s master is always 1.
● The address for the remote access device’s segment is always 0.
38 (74)
M8009 2147EN
Summary of Contents for RE 28 05
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