Rev. 0 - 05/11/2020
OPERATING MANUAL
OPERATING MANUAL
EN
EN
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An external transducer can be powered and connected to the driver.
There are two possible connections depending on the kind of transducer used:
1) Open Control Loop Transducer
2) Closed Control Loop Transducer
Nicotra Gebhardt
can provide a Pressure Transducer code K43198 that can work both in open and closed loop.
If the transducer does not have its own control and it supplies a voltage signal [0, +10V] proportional
to the measured variable, it is possible to use the tunable PID of the driver.
The signal must be connected to the TRANSDUCER INPUT.
9.6.3.3 Enable Signal (for DDMP 2.65kW - 3-Ph only)
The fan runs when the ENABLE input is bridged to the
+10V or +24V power supply.
The status of the ENABLE input does not
affect the Modbus Temporary modes.
9.6.3.4 Pressure and flow meter (for DDMP 2.65kW - 3-Ph only)
As an alternative to this operating mode, it is possible to install the airflow
measuring and adjusting system (see picture aside), which is composed of
pressure tapping block W89041 connected to transducer K43198 by means
of K409A2 piping. This transducer is connected to the PID regulator incorpo
-
rated into the driver, which is installed on the fan.
To control the airflow for reaching the desired value, it is recommended using the suitable operating mode "Constant
airflow" of the power and control system incorporated into the fan (see par. 10.2).
This system allows controlling the
airflow only by measuring the electrical parameters of the motor power supply, by enabling a specific driver operating
mode without installing additional components.
For a correct installation, follow the instructions supplied with the
single components.
If it is not necessary turning on/off the fan with an
external switch, a jumper can be inserted between
24V and ENABLE. In case this jumper is not
included, the fan will not start.
For further details, refer to par. 13.3.
Summary of Contents for DDMP 10/10
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