Toshiba TOSVERT VF-MB1, Instruction Manual

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E6581697
4
I
Caution
Reference
section
Mandatory
action

When removing and installing the terminal cover with a screwdriver, be sure not to scratch
your hand as this results in injury.

Pressing too hard on the screwdriver may scratch the inverter.

Always cut the power supply when removing the wiring cover.

After wiring is complete, be sure to replace the terminal cover.

The main unit must be installed on a base that can bear the unit's weight.
If the unit is installed on a base that cannot withstand that weight, the unit may fall
resulting in injury.

If braking is necessary (to hold motor shaft), install a mechanical brake.
The brake on the inverter will not function as a mechanical hold, and if used for that
purpose, injury may result.
1.3.2
1.3.2
1.3.2
1.3.2
1.4.4
1.4.4

Wiring
Warning
Reference
section
Prohibited

Do not connect input power to the output (motor side) terminals (U/T1,V/T2,W/T3).
That will destroy the inverter and may result in fire.

Do not connect braking resistors to the DC terminals (across PA/+ - PC/-).
That may cause a fire.

Within 15 minutes after turning off input power, do not touch wires of devices (MCCB)
connected to the input side of the inverter.
That could result in electric shock.

Do not shut down the external power supply on ahead when VIA or VIB terminals are
used as logic input terminal by external power supply.
It could cause unexpected result as VIA or VIB terminals are ON status.
2.2
2.2
2.2
2.2
Mandatory
action

Electrical installation work must be done by a qualified expert.
Connection of input power by someone who does not have that expert knowledge may
result in fire or electric shock.

Connect output terminals (motor side) correctly.
If the phase sequence is incorrect, the motor will operate in reverse and that may result in
injury.

Wiring must be done after installation.
If wiring is done prior to installation that may result in injury or electric shock

The following steps must be performed before wiring.
(1) Turn off all input power.
(2) Wait at least 15 minutes and check to make sure that the charge lamp is no longer lit.
(3) Use a tester that can measure DC voltage (800VDC or more), and check to make sure
that the voltage to the DC main circuits (across PA/+ - PC/-) is 45V or less.
If these steps are not properly performed, the wiring will cause electric shock.

Tighten the screws on the terminal board to specified torque.
If the screws are not tightened to the specified torque, it may lead to fire.

Check to make sure that the input power voltage is +10%, -15% of the rated power
voltage written on the rating label (±10% when the load is 100% in continuous operation).
If the input power voltage is not +10%, -15% of the rated power voltage (±10% when the
load is 100% in continuous operation) this may result in fire.

Set a parameter
f109
when VIA or VIB terminals are used as logic input terminal.
If it is not set, it could result in malfunction.
2.1
2.1
2.1
2.1
2.1
1.4.4
2.2
Be Grounded

Ground must be connected securely.
If the ground is not securely connected, it could lead to electric shock or fire.
2.1
2.2
10.