Yaskawa G5 OV Suppression User Manual download pdf

OV Suppression

Date: 07/01/04, Rev: 04-07 Page 1 of 8 TM.G5SW.017

GPD515/G5 Software Option (VSG114701)

Part Number: CIMR-G5MXXXXXF-017

(1)

A Yaskawa GPD515/G5 inverter with this

software can control rotating loads where

the motor is overhauled by stored energy

during part of the machine’s cycle. The

following example illustrates the type of

application that will require this software.

Example Application

This example demonstrates two ways that the

motor may be forced into regeneration. The first

is when the cam clutch is not engaged. The

motor can accelerate and drive the flywheel.

There is no problem until the speed of the motor

is reduced. The inertia from the flywheel will

overhaul the motor forcing regeneration into the

GPD515/G5. The second is when the cam

clutch is engaged. The motor in the example

will drive the flywheel for one-half of a revolution

compressing the springs. After the highest point

of the cam moves past the center of the cam

follower the springs will begin to release their

energy into the flywheel for the next half of a

revolution. This can overhaul the motor forcing

regeneration into the GPD515/G5.

This software monitors and regulates the DC

bus voltage by making adjustments to the

deceleration rate and accelerating the motor to

control regeneration. During periods when the

speed has been reduced the deceleration rate is

controlled. When the speed reference is

constant and regeneration is detected the drive

accelerates the motor to remove the condition.

The necessary parameters are provided to

enable control and limit these features.

This software does not support ramp to stop. It

defaults to coast to stop.

This document is an addendum to Technical

Manual TM 4515. It contains the effect of this

software on the parameters in the drive and

function descriptions in the manual.

This software can be setup to operate in 230 –

575 VAC GPD515/G5 units. The default

settings are for 480 VAC units.

(1)

ZZZZ refers to the base Model Number

of drive to be flashed with the software.

Motor /

Gear Box

Yaskawa

GPD515/G5

With

G114701

FLYWHEEL

Clutched

Cam

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Example Application

OV Suppression Date: 07/01/04, Rev: 04-07 Page 1 of 8 TM.G5SW.017 GPD515/G5 Software Option (VSG114701) Part Number

Page 2 - Flowchart

Date: 07/01/04, Rev: 04-07 Page 2 of 8 TM.G5SW.017 FlowchartP1-01Rise amountInput frequencyreferenceSoft starterDC bus voltage DC bus filterP1-0

Page 3 - Deceleration OVP

Date: 07/01/04, Rev: 04-07 Page 3 of 8 TM.G5SW.017 Acceleration OVP The DC bus filter is used to provide a stable bus reference needed to deter

Page 4 - OV Parameters

Date: 07/01/04, Rev: 04-07 Page 4 of 8 TM.G5SW.017 Startup Procedure There are no special procedures beyond setting parameters P1-06 and P1-07

Page 5 - New Program Parameters

Date: 07/01/04, Rev: 04-07 Page 5 of 8 TM.G5SW.017 New Program Parameters P1-01 DC Filter Rise amount per scan B B B B DC Filter Rise P1-01

Page 6

Date: 07/01/04, Rev: 04-07 Page 6 of 8 TM.G5SW.017 P1-04 Over Voltage Prevention Frequency Reference Gain B B B B OVP Fref Gain P1-04= 0.050

Page 7 - New Monitors

Date: 07/01/04, Rev: 04-07 Page 7 of 8 TM.G5SW.017 P1-07 Over Voltage Prevention Decel Stop Voltage B B B B OVP Dec Stop P1-07= 750 Vdc The

Page 8 - OVP Total Ref

Date: 07/01/04, Rev: 04-07 Page 8 of 8 TM.G5SW.017 U1-53 Over Voltage Prevention Frequency B B B B OVP Frequency 0.00 Hz Displays the amou

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Yaskawa G5 OV Suppression User Manual

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