
51/60 NT00000658-TEDH-V-F400-ECOWATT-AN-210609
6.5.3 Speed adjustment
Correspondence table between the fan speed and the input signal in VAV mode:
TEDH/V F400 ECOWATT
®
in rpm
Input signal
500
630
710
Potentiometer
graduation
Voltage (V) at
terminal 10
Value in the Modbus register
Holding Registers 0
200
200
200
0
0
0
460
400
410
2
2
2 000
720
600
620
4
4
4 000
980
790
830
6
6
6 000
1240
990
1040
8
8
8 000
1500
1180
1250
10
10
10 000
For information: Qv2 = Qv1 x (N2/N1), with N the fan speed and Qv the fan volume airflow.
Modbus register
Change of operating mode
In the Holding Register
0x03 : Reading a register
0x06 : Writing a register
Register
Address
Funtion
Value
Status
4x0011
10
Operating mode
0 ou 2
0 - Speed control via analogue input
2 - Speed control by Modbus
On / Off via Modbus
In the Holding Register
0x03 : Reading a register
0x06 : Writing a register
Register
Address
Funtion
Value
Status
4x0014
13
ON/OFF motor
0 - 1
0 - OFF
1 - ON
Speed setpoint via Modbus
In the Holding Register
0x03 : Reading a register
0x06 : Writing a register
Register
Address
Function
Value
Resolution
Unit
4x0001
0
Speed setpoint
0 - 10000
0.01
%
6.6
CAV constant airflow mode
6.6.1 Description
In constant airflow operation, the controller regulates the speed of the unit to obtain the airflow setpoint.
The installed PTHV-A display shows the measured airflow in m
3
/h. The airflow setpoint can be adjusted
by the potentiometer integrated in the controller, by an external potentiometer CVF type with ON-OFF, by
an external 0-10V source or by GTC ModBus.