Zener ECODRIVE 8000 Installation Manual Supplement page 49

ZENER ECODRIVE® 8000
ZENER VARIDRIVE SOLUTIONS
Idle based on Flow Switch Input
This application configures a digital input D3(35) for a flow switch input. The flow switch provides a more simple setup process
('% Load' threshold is not used). When the flow switch provides an 'open contact' (ie.no flow') into D3 (terminal 35) for the 'Idle
delay' period the ZENER 8000 will enter idle mode. It can operate in conjunction with the '% Load' method.
NOTE: If there is no switch available or installed a link must be fitted between terminal 1 & 35.
Examples of Flow Switches available from Kelco
Tank Fill via pressure transducer
It is possible to use pressure to switch the pump on and off. This means that wiring of a level switch in the tank back to the
ECODRIVE would not be required. A pressure transducer (with 4-20mA signal or similar) at the pump can be directly connected to
the ECODRIVE and monitored to control the pump operation. If the pressure feedback provides an accurate indication on the
level of water in the tank or when the tank is full, this can be used to switch the ECODRIVE in the same manner as a level switch.
The ECODRIVE has a built-in comparator function that allows a 'Hi &/or Lo compare' output to a relay, digital output or other
internal function.
The signal from a pressure transducer can be used to change the state of a relay output (relay 1) at a preset level. Alternatively, a
high & low pressure level may provide a means to switch the pump ON & OFF.
The ability to use a pressure transducer to provide remote control is dependent on the installation and requires careful
consideration.
Contact Zener for assistance to configure the ECODRIVE for your desired operation.
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