Oilon Lampoassa RE 28-48, Installation And Operation Manual

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● RE 26–48: circuit breaker 1F1
● RE 56–96: circuit breakers 1F1 and 2F1
In RE 56–96 models, operating switch S1 halts the upper compressor unit (master),
and operating switch S2 halts the lower compressor unit (slave).
2.3 Modbus connection
Accessory Modbus module
OCI351.01/109
Designation 36108283
Description Siemens OCI351.01/109. Modbus RTU RS485.
The structure and operation of the previous version of the product (OCI350.01/101; 36108133) is nearly
identical.
Connect the RVS61.843 module to the controller’s connector X60. Use two-sided tape
to attach the module on top of the controller.
If the system includes several heat pumps, equip each controller with the Modbus
module. Activate the terminating resistor in the last module in the chain by setting each
of the module’s DIP switches to the top position.
● The terminating resistor is disabled, when both of the DIP switches are in the lower
position.
You can check that the controller has identified the module using the ACS program. In
the configuration menu, the line
Modbus interface available
will show
yes
, and the
Modbus menu will appear.
Modbus parameters
Configure the Modbus connection parameters presented below either using the user
interface or the ACS program.
Menu Line Setting
Modbus 6641 Modbus slave
address
Modbus 6652 Baud rate
Modbus 6653 Parity
Modbus 6654 Stop bit
The Modbus registers are available from our website and our customer services.
14 (74) M8009 2147EN