Nicotra EC FAN FDP, Руководство по эксплуатации

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Rev. 0 - 11/12/2020
OPERATING MANUAL OPERATING MANUAL
EN EN
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15. MASTER & SLAVE MODE
This single-phase driver has a tachometric output ranging from 0 to 5V and a special configuration must be set on the slave fan
for a Master&Slave connection. It is possible to drive two fans in a master and slave configuration by setting the MASTER in any
preferred mode and the SLAVE in Master&Slave mode only.
The SLAVE operating mode must be changed ( INPUT TYPE = 3 ).
The MASTER must have the Holding Register 46 set at 0 = TACHO.
15.1 Master and Slave 0-5V PWM out (for 1.05 kW 1-phase only)
A Master & Slave connection is necessary when the fans have to operate in parallel and in any Constant-Airflow mode, or under
control of the internal PID regulator. Having two or more fans self-controlling independently, while operating in parallel, can make
the system unstable. A Master & Slave connection is neither needed nor recommended when the fans in parallel are runnig in any
speed-control mode, even if under control of a common external PID regulator.
TACHO /
A
LARM / FIL
TER
TACHO /
A
LARM / FIL
TER
GN
D
GN
D
MODBUS -B MODBUS -B MODBUS -A MODBUS -A GN
D
GN
D
TRANSUCER INPU
T
TRANSUCER INPU
T
ANALOG INPU
T
ANALOG INPU
T
ENABL
E
ENABL
E
+10V +10V +24V +24V
GND GND IN IN +10 +10 GND GND B B
A
A
OUT
OUT
MASTER SLAVE
MASTER SLAVE
16 COMMUNICATION
Protocol interface:
MODBUS RTU (RS485 or Bluetooth)
Baud rate
The baud rate can be set through the Holding Register 47 and the possible speeds are:
RS-485 CABLE : 9.6kbps and 19.2kbps (higher speeds are not allowed due to the board Opto-Insulators)
UART OFFLINE CABLE : 9.6kbps, 19.2kbps, 38.4kbps and 57.6kbps.
Parity and Stop bits
The parity and the stop bits can be chosen by modifying the Holding Register 48 and the possible choices are:
0 No parity, 2 Stop Bits (default)
1 Odd parity, 1 Stop Bit
2 Even parity, 1 Stop Bit
The value of the Holding Registers is NOT coerced if trying to set a not allowed value.
When trying to enter a value in any holding register, the value is not overwritten if the new value is outside the load boundaries.