E6582175
A-28
1
Remedies:
1. Use a meter output terminal in the inverter control circuit.
The load current can be output on the meter output terminal (FM). If the meter is connected, use an
ammeter of 1mAdc full scale or a voltmeter of 10Vdc full scale.
0-20mAdc (4-20mAdc) can be also output. (Refer to section 5.1)
2. Set
f300 (PWM carrier frequency) to 4kHz or less.
However, the motor magnetic noise is increased. (Refer to section 6.18)
3. Use the monitor functions built into the inverter.
Use the monitor functions on the panel built into the inverter to check current values. (Refer to
section 8.2.1)
(3) Influence and remedy of the leakage current at long-distance cable
Caution
Mandatory
action
As a remedy, set
f300 (PWM carrier frequency) to 2kHz or less, when using an AC reactor (PFL
series) to the output side of the inverter.
This can also cause serious accidents through overheating and fire.
Make the cable length between the inverter and the motor 100 m or less, and shorten as much as
possible.
When connecting two or more sets of motors, the cable length is the total cable length.
The charging current of the electrostatic capacitance between cables increases, as the cable length
becomes long. Especially for low capacity (4.0kW or less) models, an over-current trip can become
easy to occur.
To avoid the over-current trip, install the filter (MSF series) or the AC reactor (PFL series) to the inverter
output side, or reduce the electrostatic capacitance with separating between cables, etc.
1.4.4 Installation
Installation environment
This inverter is an electronic control instrument. Take full consideration to installing it in the proper operating
environment.
Warning
Prohibited
Do not place any inflammable substances near the inverter.
If an accident occurs in which flame is emitted, this could lead to fire.
Do not install in any location where the inverter could come into contact with water or other fluids.
This can result in electric shock or fire.
To Next Page
Loading...
Need help?
General