Zener ECODRIVE 8000 Installation Manual Supplement page 35

ZENER VARIDRIVE SOLUTIONS
[SETUP for Tank Fill / Basic Pumping]
Rated Motor Current
Rated Motor Amps
40.2 A
AC
Overload Current
Overload Amps
40.2 Amps
AC
Minimum Output Frequency
Min frequency
0 Hz
AC
If the minimum speed is unknown, the following process will determine what the minimum speed should be set to. If the
pump/motor manufacturer has specified a minimum speed, ensure your setting is equal or above this speed.
Some pumps such as bore pumps require rapid acceleration to 30Hz (60% Speed) of 1 or 3 seconds depending on the
pump manufacturer. A Dual ramp is selected as default with an acceleration & deceleration time of 2 seconds. Further
adjustment may be required to suit the application. Refer to Page 44.
Finding the minimum output speed (frequency)
1. Press
2. Press and hold the to increase the output to about 10Hz. Observe
the % Load indication.
3. The '% Load' will rise as fluid begins to flow. Continue to increase the speed (1 or 2 Hz steps) and observe the '% Load'
indication.
4. Release the
5. Press STOP
6. Access the application parameters and find the "Min frequency" menu. Adjust and press ENTER
IM00130
An important parameter is the motor rated current which is used to help estimate the
motor load. The rated current is that found on the motor nameplate.
The ECODRIVE monitors the motor current and will generate a trip if high current has been
flowing for a sufficient amount of time. Generally, the overload current is the same as the
rated motor current.
This section is primarily intended for those applications employing a centrifugal pump. The
pump speed to overcome the "head" pressure and create a fluid flow is said to be the
minimum speed for the system. Below this speed no fluid flow occurs and prolonged
operation below the minimum speed reduces the pumps' service lifetime. To help fin the
minimum speed value for the system the ECODRIVE is best to operate in local mode.
(generally by removing link to D4 ie.terminal 5)
50Hz = 100% Speed
several times to show the meter display:
button when the '% Load' begins to rise significantly.
to stop the motor.
P a g e
ZENER ECODRIVE® 8000
% Load
Indication
This frequency (plus 1-2Hz)
will be entered as the min
frequency.
| 33
0.0Hz 0.0kW
0% EN LOC
10.0Hz 0.8kW
15% 8.3A
32Hz
43%L
20/07/2018 3:59 PM
5.1kW
6.7A