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E 6580764 ③

TOSVERT VF-A7
PG FEEDBACK BOARD

Instruction Manual

1. INTRODUCTION ....................................................................................... 3
2. NAMES OF THE PARTS ON THE BOARD .............................................. 4
3. CONNECTION TO THE INVERTER......................................................... 5
3.1. Installation to the Inverter.................................................................. 5
3.2. Wiring ................................................................................................ 7
4. FUNCTIONAL DESCRIPTION .................................................................. 8
4.1. Vector control with sensor ................................................................. 8
4.1.1. PG feedback wiring.................................................................. 8
4.1.2. Selection of encoder type....................................................... 11
4.1.3. Vector control setting parameter ............................................ 12
4.1.4. Monitoring method for feedback amount ............................... 15
4.1.5. Confirmation of PG's rotationaldirection................................ 15
4.1.6. Speed abnormality detect function ......................................... 16
4.1.7. Accuracy of speed control...................................................... 16
4.2. Pulse input command (speed command selection) ........................ 17
4.2.1. Pulse command connection method...................................... 17
4.2.2. Pulse input setting parameter................................................ 19
4.2.3. Monitoring method of pulse input command .......................... 20
5. EXTERNAL VIEW ................................................................................... 21
6. SPECIFICATION ..................................................................................... 22
7. OPTION CABLE...................................................................................... 23
8. WARRANTY ............................................................................................ 24

NOTE
1. Make sure that this instruction manual is delivered to the end user of the PG feedback board.
2. Read this manual before installing or operating the inverter unit, and store it in a safe
place for reference.
© TOSHIBA Corporation 1999All Rights Reserved.

E 6580764 ③

Safety Precautions
On the inverter and in its instruction manual, important information is contained for preventing injuries to users
and damages to assets and for proper use of the device. Read the instruction manual attached to the inverter
along with this instruction manual for completely understanding the safety precautions and adhere to the
contentsof these manuals.
Handling in general

Danger
▼ Never disassemble, modify or repair the inverter.
Never
Disassemble

Disassembling the inverter could cause electric shocks, fire or injuries.
Request your TOSHIBA dealer for repairs.
▼ Do not remove connectors when the power is on.
It could lead to electric shocks.
Do not put or insert foreign objects such as waste cable, bars, or wiresinto the inverter.

Prohibited

It could lead to electric shocks or fire.
▼ Do not splash water over the inverter.
It could lead to electric shocks or fire.
W iring should be conducted after turning the inverter power off.
Turn off the power immediately in case any abnormalities such as smokes, smells or

Mandatory

abnormal noise are found.
Neglect of these conditions could lead tofire.
Ask your TOSHIBA dealer for repairs.

Transportation and Installation

Danger
▼ Do not install or operate the inverter if it is damaged or any part is missing from it.
Operating the inverter in a defective condition could lead to electric shocks or fire.
Ask your TOSHIBA dealer for repairs.
▼ Do not put any inflammable material near the inverter.
Prohibited

It could catch fire...
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