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E6581381
(2)CT and ammeter
If a CT and ammeter are connected externally to detect inverter output current, the leak current's high frequency component may destroy the ammeter. If the wires are more than 50 meters long, it will be easy for the high frequency component to pass through the externally connected CT and be superimposed on and burn the ammeter with models having motors of low rated current (several A(ampere) or less), especially the 400V class low capacity (5.5kW or less) models, because the leak current will increase in proportion to the motor's rated current.
Remedies: | 1 |
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
Use the monitor functions on the panel built into the inverter to check current values. ⇒See section 8.1.1.
1.4.4Installation
■Installation environment
The
Danger
•Do not place any inflammable substances near the
Prohibited
•Operate under the environmental conditions prescribed in the instruction manual. Operations under any other conditions may result in malfunction.
Mandatory
Warning
•Do not install the
Prohibited
•Check to make sure that the input power voltage is +10%,
+10%,
Mandatory may result in fire.