Analogue / Modbus Interface - Nicotra Gebhardt EKE05-00 Serie Bedienungsanleitung

3.6 Analogue / Modbus Interface

3.6.1 Analogue Interface
The combined Analogue/Modbus interface supports both ways of speed control. The
analogue mode is preset. The maximum speed can be changed with the service button. The
procedure is the same like analogue interface. As well the maximum speed can be changed
by Modbus.
3.6.2 Modbus RTU
The procedure is similar to the modbus interface explained in chapter 3.4 „Modbus RTU":

Adjust the Modbus address

Check the communication parameters with your controll software

Change operation mode to "Modbus"

Change set speed value to start the motor

Stop the motor
To change the operation mode to „Modbus" set output register 40011=1. At next step the
speed value can be set by changing the output register 40002. The maximum speed value
can be set with output register 40003. For more information see the register table in the
appendix.
3.6.3 Error Dry Contact
A dry contact (relay, normally closed) indicates the error state of the device. The contact
behaviour can be set with Modbus register 40010. It is possible to change between the
information „no error" (= ready) and "no error AND motor runs".
3.6.4 Service Button
The service button is used for two different functions:
3.6.4.1 Reset the Modbus communication parameters to default
For this purpose press this button during power-on of the controller. The device answers with
alternate flashing of red and green LED
3.6.4.2 Set the maximum speed value
The procedure is the same like analogue interface, see chapter 3.5.1 "Programming of
Maximum Speed According to Connected Fan"
Commissioning
EN-25 of 38