Nicotra Gebhardt EC FAN RDP, Руководство по эксплуатации

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Rev. 1 - 05/10/2021
OPERATING MANUAL OPERATING MANUAL
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Broadcast Address
The Broadcast address is 0.
1-Phase 3-Phase
1.05kW 2.1kW 2.65kW 5.5kW
Baud rate 9600 9600 9600 9600
Parity and Stop
Bits
0 0 0 0
Modbus Address
1 1 1 1
UART (OFFLINE) Default Communication Parameters
1-Phase 3-Phase
1.05kW 2.1kW 2.65kW 5.5kW
Baud rate 9600 9600 57600 57600
Parity and Stop
Bits
0 0 0 0
Modbus Address 1 1 1 1
Changing the Baud rate has an immediate effect, while the other communication parameters require
the complete fan power off and consequently power on (wait until the complete discharge of the
capacitors and the led turning off, otherwise the changes are not written into the EEPROM).
17.1 Temporary holding register
The
Holding Register 66 is a special register used in each operating mode for setting the speed, the airflow,
the slip and the PID reference.
It is not a physical register and it can be written, but it is not possible to read its value. The setting remains
active until the fan is powered on.
If the fan is powered off but there is a residual charge, the microcontroller of the driver is still function-
ing. Therefore, if it is powered on in this situation the value set through the register 66 is still active.
17.2 Fixed holding register
The drivers Holding Registers permanently stored into the EEPROM are 64, but only 26 registers are modifiable
by the end user (see the table in the following page).
The most important Holding Register 34 is the Input Type related to the selection of the Operating Mode.
When the timeout occurs, the driver goes in alarm condition and the communication must be restored and
the alarm must be cleared. The alarm is indicated in the Input register 17 with the value of 255 (0xFF).
Modbus Address
The slave device address can be changed from value 1 to 247 by modifying the Holding Register 45.
The default address from factory configuration is 1.
RS-485 Default Communication Parameters
The values in the Holding Registers nos. 47 and 48 apply to the Modbus communication via the RS485
port, and via the UART port of the 1kW and 2 kW single-phase drivers. The Modbus communication pa-
rameters (Baud-rate, parity and stop-bits) used for the UART port of the 2.6kW and 5.5 kW three-phase
drivers are fixed.