Yaskawa VS-616G5 User Manual

VS-616G5 Series (Revision F)
Programming Manual

Constant Torque Inverter with Adaptive Vector Control (AVC™)

PRECAUTIONS

WARNING

1) Only turn ON the input power supply after replacing the front cover. Do not remove the cover
while the inverter is powered up.

2) When the retry function (parameter L5-02) is selected, do not approach the inverter or the load,
since it may restart suddenly after being stopped.

3) Since the Stop key can be disabled by a function setting, install a separate emergency stop switch.

4) Do not touch the heatsink or braking resistor, due to very high temperatures.

5) Since it is very easy to change operation speed from low to high speed, verify the safe working
range of the motor and machine before operation.

6) Install a separate holding brake, if necessary.

7) Do not check signals during operation.

8) All inverter parameters have been preset at the factory. Do not change the settings unless required.

Failure to observe these precautions may result in equipment damage, serious personal injury or death.

NOTICE

Printed April 1999. The information contained within this document is the proprietary property of
Yaskawa Electric America, Inc., and may not be copied, reproduced or transmitted to other parties
without the expressed written authorization of Yaskawa Electric America, Inc.

!

No patent liability is assumed with respect to the use of the information contained herein. Moreover,
because Yaskawa is constantly improving its high-quality products, the information contained in this
manual is subject to change without notice. Every precaution has been taken in the preparation of this
manual. Nevertheless, Yaskawa assumes no responsibility for errors or omissions. Neither is any liabil­ity assumed for damages resulting from the use of the information contained in this publication.

2 VS-616G5 Programming Manual

Contents

Contents

Section Description Page

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

VS-616G5 PARAMETER TREE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

A INITIALIZATION PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A1 Initialization Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A2 User’s Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

B APPLICATION PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

B1 Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

B2 DC Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

B3 Speed Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

B4 Delay Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

B5 PID Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

B6 Reference Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

B8 Energy Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

B9 Zero Servo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

C TUNING PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

C1 Accel/Decel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

C2 S-Curve Accel/Decel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

C3 Motor Slip Compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

C4 Torque Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

C5 ASR Tuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

C6 Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

C7 Hunting Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

C8 Factory Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

D REFERENCE PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

D1 Preset References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

D2 Reference Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

D3 Jump Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

D4 Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

D5 Torque Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

E MOTOR PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

E1 V/f Pattern 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

E2 Motor 1 Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

E3 Motor 2 Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

E4 Motor 2 V/F Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

E5 Motor 2 Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

F OPTION PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

F1 PG Option Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

F2 AI-14 Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

F3 DI-08, 16 Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

F4 AO-08 Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

F5 DO-02 Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

F6 DO-08 Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

F7 PO-36F Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

F8 SI-F/G Option Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

F9 CP-916 Option Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

H CONTROL CIRCUIT TERMINAL PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

VS-616G5 Programming Manual 3

Contents

Section Description Page

H1 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

H2 Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

H3 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

H4 Analog Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

H5 Serial Communication Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

L PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

L1 Motor Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

L2 Power Loss Ridethrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

L3 Current Limit/Stall Prevention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

L4 Reference Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

L5 Fault Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

L6 Torque Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

L7 Torque Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

L8 Hardware Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

O OPERATOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

O1 Monitor Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

O2 Key Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

AUTO-TUNING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Appendix VS-616G5 PARAMETER LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

4 VS-616G5 Programming Manual

Introduction

Quick-Start Access Level Structure

Introduction

Thank you for purchasing Yaskawa’s VS-616G5 high performance vector inverter. The G5 employs
the latest hardware and software technology to provide unmatched performance, reliability and appli­cation flexibility.

The G5 flexible control mode architecture allows four choices of motor control technology for your
application:

· Open Loop Vector is best for most applications, as it offers Adaptive Vector Control technology
(AVC™) for precise speed regulation, quick response and high starting torque.

· Closed Loop Flux Vector is the choice for applications requiring torque control, very precise speed
regulation and full torque control at zero speed.

· V/f (Volts per Hertz) mode with Yaskawa’s proprietary full range auto-torque boost provides ideal
control for multi-motor applications.

· Closed Loop V/f allows encoder feedback for use with the Volts/hertz mode.

Use the following key to determine which control mode and access level are available for each parameter.

No. Parameter Name LCD Display

A1-00 Language Selection Select Language

Q: Quick-Start Level, selected parameters for maintenance-level programming
B: Basic Level, selected parameters for basic programming in most applications
A: Advanced Level, all parameters for advanced programming in special applications

The menu structure for all access levels are the same for the Operation, Initialize, Auto-tuning and
Modified constants sections. The Programming section menu structure for each access level is as fol­lows:

MENU

Basic Access Level Structure

MENU

Programming

Programming

Function Level

Data Name Data Entry

Data Name Data Entry

V/f V/f w/PG

Q Q Q Q

Open Loop

Vector

Flux

Vector

VS-616G5 Programming Manual 5

Advanced Access Level Structure

MENU

Programming

Group Level Function Level Data Name Data Entry

Introduction

Software Version Explanation

Yaskawa recognizes the need to continuously improve product quality. This product may receive fea­ture enhancements in the form of software or hardware changes. New programming parameters will be
added to the latest programming manual. When a new parameter is added a software version note will
be placed next to the parameter.

Software Version Example:

A1-00 Language Selection Select Language

Select the language displayed on the digital operator according to the following table:

Setting Description

0 English (factory default)
1 Japanese
2 Deutsche <1110>
3 Francais <1110>
4 Italiano <1110>
5 Espanol <1110>
6 Portugues <1110>

This version note <1110> indicates that five additional languages have been added with software ver­sion 1110.

The part number of the main control printed circuit board on the drive reflects the software version.
The software version normally increases to a higher number with newer versions. Please consult the
factory for details.
PCB Part Number Example: ETC615991-S1110 Software version 1110

Q Q Q Q

The VS-616G5 ships preset to open loop vector control, quick-start access level. This publication
describes all Quick-Start, Basic and Advanced parameters. For installation and simplified Quick-Start
parameters, please refer to YEA-TOA-S616-10.12C.

6 VS-616G5 Programming Manual

VS-616G5 Parameter Tree

VS-616G5 Parameter Tree

Group Function Display Access Level

Menu

Inverter operation is enabled.
Inverter status is displayed.

A Initialize

Language selection in LCD display.
Constant access levels, control method
selection and initializing passwords.

Parameters are set/read. Items to be set/
read vary depending on the access level
setting.

Motor parameters are automatically set
by inputting turning data (motor name­plate values) when performing vector.

Only parameters that have been changed
from the factory setting are set/read.

Operation

Programming

Auto-tuning

Modified Constants

U Monitoring Items

B Application

C Tuning

D Reference

E Motor Parameters

F Option

H Control Circuit Terminals

L Protection

O Digital Operator

Monitor

Application

Tuning

Reference

Motor

Option

Terminal

Protection

Operator

U1 Status monitoring Monitor Q, B, A
U2 Fault trace Fault Trace Q
U3 Fault history Fault History Q

A1 Initialization Initialize Q
A2 User setting parameter User Parameters A

B1 Operation method selection Sequence Q, B, A
B2 DC injection braking DC Braking B
B3 Speed search Speed Search A
B4 Timer function Delay Timers A
B5 PID control PID Control A
B6 DWELL function Reference Hold A
B7 Droop control Droop control A
B8 Energy-saving control Energy Saving A
B9 Zero Servo Zero Servo A

C1 Accel/decel time Accel/Decel Q, B, A
C2 S-curve characteristics S-curve Acc/Dec A
C3 Motor slip compensation Motor-slip Comp B. A
C4 Torque compensation Torque Comp B, A
C5 ASR ASR Tuning B, A
C6 Carrier frequency Carrier Freq BA
C7 Hunting prevention Hunting Prev A
C8 Factory-tuning constant Factory Tuning A

D1 Frequency reference value Preset Reference Q, A
D2 Upper/lower limits Reference Limits B
D3 Jump frequency Jump Frequencies B
D4 Sequence Sequence A
D5 Torque reference Torque Control A

E1 V/f pattern V/F Pattern Q
E2 Motor parameters Motor Setup Q, A
E3 Motor 2 control method Motor 2 Ctl Meth A
E4 V/f pattern/2 V/f Pattern 2 A
E5 Motor 2 constants Motor 2 Setup A

F1 PG speed control card PG Option setup Q, B, A
F2 Analog reference card A1-14 Setup B
F3 Digital input card DI-08, 16 Setup B
F4 Analog monitor card AO-08, 16 Setup B
F5 Digital output card DO-02 Setup B
F6 Digital output card DO-08 Setup B
F7 Pulse monitor card PO-36F Setup B
F8 SI-F/G card SI-F/G B
F9 DDS-B/SI-B card DDSS/SI-B B

H1 Sequence input Digital Inputs B
H2 Sequence output Digital Outputs B
H3 Analog input Analog Inputs B, A
H4 Analog output Analog Outputs B
H5 MODBUS communication (RS-485) Serial Com Setup A

L1 Motor electric thermal overload relay Motor Overload B
L2 Momentary power loss ride-through PwrLoss Ridethru B, A
L3 Stall prevention Stall Prevention B, A, F
L4 Frequency Detection Ref Detection B, A
L5 Fault retry Fault Restart B
L6 Overtorque detection Torque Detection B, A
L7 Torque limit Torque Limit B
L8 Hardware protection Hdwe Protection B, A

O1 Display selection Monitor Select B, A
O2 Key selection Key Selections B, A

VS-616G5 Programming Manual 7

This page intentionally left blank.

8 VS-616G5 Programming Manual

Main Menu: Initialize <ENTER>

A Initialization Parameters

A1 Initialization Set-up

Section A: Initialization Parameters

A1 Initialization Set-up

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

A1-00 Language Selection Select Language

Select the language displayed on the digital operator according to the following table:

Setting Description

0 English (factory default)
1 Japanese
2 Deutsch <1110>
3 Francais <1110>
4 Italiano <1110>
5 Espanol <1110>
6 Portugues <1110>

A1-01 Parameter Access Level Access Level

This parameter allows the “masking” of parameters according to user level. See the following table:

Setting Description

0 Operation Only
1 User Program - Accesses parameters selected by OEM (A2-01 to A2-32).
2 Quick Start Level (factory default) - For maintenance-level programming.
3 Basic Level - For basic programming in most applications.
4 Advanced Level - For advanced programming in special applications.

Q Q Q Q

Q Q Q Q

A1-02 Control Method Selection Control Method

Q Q Q Q

Select the control method best suited for your application.

Setting Description

0 V/f Control - For general-purpose and multiple motor applications.
1 V/f with PG Feedback - For general-purpose applications requiring closed

loop speed control.

2 Open Loop Vector (factory default) - For applications requiring precise

speed control, quick response and higher torque at low speeds (150%
torque below 1Hz).

3 Flux Vector - For applications requiring very precise speed and torque con-

trol at a wide speed range including 0 speed. Uses encoder feedback.

VS-616G5 Programming Manual 9

Section A: Initialization Parameters

A1 Initialization Set-up

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

A1-03 Operator Status Init Parameters

Use this parameter to reset the inverter to its factory default settings. Initialize the inverter after chang­ing the control PCB, or after selecting language (A1-00), control method (A1-02), or inverter capacity
(O2-04).

Setting Description

0 No Initialization (factory default)

1110 User Initialization - resets the inverter to user-specified initial

values. To set user-specified initial values, make all required
changes to parameter settings, then set O2-03 to “1”. The
inverter will memorize all current settings as the user-specified
initial values. Up to 50 changed parameters can be stored.

2220 2-Wire Initialization - terminal 1 becomes FWD run command

and terminal 2 becomes REV run command. All other param­eters are reset to their original factory default settings.

3330 3-Wire Initialization - terminal 1 becomes run command, termi-

nal 2 becomes stop command and terminal 3 becomes FWD/
REV run selection. All other parameters are reset to their orig­inal factory default settings.

Q Q Q Q

A1-04 Password Entry Enter Password

Q Q Q Q

Parameter A1-04 is used to enter a password into the inverter, to be able to make adjustments to locked param-

eters.

Password protection is provided for:
A1-01 Access Level
A1-02 Control Method
A1-03 Initialization
A2-01 to A2-32 User Parameters (If selected)

10 VS-616G5 Programming Manual

A2 User’s Parameters

The user can select up to 32 parameters for quick-access programming. By setting the user access level
(A1-01) to “User Program”, only the parameters selected in function A2 can be accessed by the user.

Parameter A1-01 must be set to 4 (advanced access level) to input parameter numbers into A2-01
through A2-32, and then A1-01 must be set to 1 (User Level) for only the user selected parameters to
be viewed.

Main Menu: Programming <ENTER>

B Application Parameters

B1 Sequence

Section B: Application Parameters

A2 User Parameters and B1 Sequence

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B1-01 Frequency Reference Selection Reference Source
B1-02 Operation Method Selection Run Source

Frequency reference and run command can be set independently as shown below:

Setting Description

0 Command from digital operator
1 Command from control circuit terminal (factory default)
2 Command from serial communication
3 Command from option card
4 EWS (Reference from CP-717)* <1110>

This setting will be used with the CP-717 to run and change
the reference through DP-RAM.

* Setting parameter B1-01 or B1-02 to 4 allows reference and/or run source from CP-717 when

either CP-916 or CP-216 option cards are installed.

By depressing the LOCAL/REMOTE key on the digital operator, the operation mode can be
selected as shown below:

Local: Operation according to frequency reference and run command from digital operator.
Remote: Operation according to frequency reference and run command set by B1-01 and B1-

02.

Q Q Q Q
Q Q Q Q

The digital operator is reset to remote operation when power is cycled.

VS-616G5 Programming Manual 11

Section B: Application Parameters

B1 Sequence

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B1-03 Stopping Method Selection Stopping Method

This function selects the stopping method suitable for the particular application.

Setting Description

0 Ramp to stop (factory default)
1 Coast to stop
2 DC injection to stop
3 Coast to stop with timer

· Ramp to Stop (B1-03 = “0”)

Output Frequency

Decel time 1 (C1-02)

Zero Speed Level (Frequency at
DC Injection Braking Start - B2-01)
Factory Default: 0.5Hz

DC injection Braking Time
at Stop (B2-04)
Factory Default: 0.5 s

Run Command

ON

OFF

Q Q Q Q

Figure 1 Stopping Method - Ramp to Stop

Upon removal of the FWD (REV) run command, the motor decelerates at a rate determined by the
time set in deceleration time 1 (C1-02) and DC injection braking is applied after the minimum output
frequency (E1-09) has been reached. If the deceleration time is set too short or the load inertia is large,
an overvoltage fault (OV) may occur during deceleration. In this case, increase the deceleration time or
install an optional braking transistor and/or braking resistor (braking transistors are provided as stan­dard for units 230V 7.5kW and smaller, 460V 15kW and smaller).

Braking torque: without braking resistor, approx. 20% of motor rated torque

with braking option, approx. 150% of motor rated torque

12 VS-616G5 Programming Manual

· Coast to Stop (B1-03 = “1”)

Section B: Application Parameters

B1 Sequence

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

Output frequency

Run command

ON

Inverter output is shut OFF
when stop command is given.

OFF

Figure 2 Stopping Method - Coast to Stop

Upon removal of the FWD (REV) run command, the motor starts to coast. After a stop command is
given, a run command is accepted and operation will start after the minimum baseblock time (L2-03)
elapses. If there is a possibility that a run command might be entered before the motor has come to a
stop, the speed search function (B3) or Coast to Stop with Timer 1 (B1-03 = “3”) should be employed.

· DC Injection Braking to Stop (B1-03 = “2”)

Output Frequency

Inverter Output OFF during
Minimum Baseblock Time (L2-03)
Factory Default: 0.5s

Run Command

ON

DC injection Braking Time
at Stop (B2-04)
Factory Default: 0.0s

OFF

DC injection
Braking Time

DC injection Braking Time
at Stop (B2-04)

B2-04 x 10

Figure 3 Stopping Method - DC Injection Braking to Stop

Upon removal of the FWD (REV) run command, the motor brakes to stop, according to the DC injec­tion braking time at stop set in B2-04. If this value is set to “0” (factory default), DC injection braking
is disabled, and the motor coasts to stop. When choosing this function, note that the actual stop time is
the time set in B2-04 multiplied by 10 (see Figure 3 above). This stopping method is disabled during
flux vector control. Braking duty cycle should allow excess motor heat to dissipate.

VS-616G5 Programming Manual 13

Section B: Application Parameters

B1 Sequence

· Coast to Stop with Timer 1 (B1-03 = “3 ”)

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

Output Frequency

Coasting

FWD (REV)
Run Command

Run Command Disabled

Decel Time 1

(C1-02)

Figure 4 Stopping Method - Coast to Stop w/ Timer

After a stop command is given, a run command is not accepted while the coast to stop timer elapses
(same as Decel 1). After the timer runs out, another run command must be given for the inverter to
begin acceleration. This stopping method is disabled during flux vector control.

B1-04 Prohibition of Reverse Operation Reverse Oper

Accel Time 1

(C1-01)

Time

ONONON

B B B B

A “reverse run disabled” setting does not allow a reverse run command from the control circuit termi­nal or the digital operator. This setting is used in applications where a reverse run command is undesir­able.

Setting Description

0 Reverse run enabled (factory default)
1 Reverse run disabled

14 VS-616G5 Programming Manual

Section B: Application Parameters

B1 Sequence

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B1-05 Operation Selection at Zero Speed Zero Speed Oper

During flux vector control, select an operation mode to be employed when the frequency reference (ana­log input) drops below the minimum output frequency (El -09). During V/f or open loop vector control,
baseblock is applied when the output frequency drops below the minimum output frequency (El -09).

Setting Description

0 E1 -09 disabled, run according to frequency reference (factory default)
1 Baseblock
2 Run at minimum output frequency (E1-09)
3 Zero-speed operation (internal speed reference is set to “0”)

B1-06 Input Scan Time Cntl Input Scans

This parameter selects the microprocessor scan time for reading sequence input data from the control
circuit terminals.

Setting Description

0 2ms scan time for 2 scans
1 5ms scan time for 2 scans (factory default)

- - - A

B B B B

Set to “0” when a quicker response is needed from the control circuit terminals.

B1-07 Operation Selection After Switch to Remote Mode LOC/REM RUN Sel

Parameter b1-07 determines how the inverter will function when switching between local and remote
operation. This function prevents the motor from running when switching between local/remote and
the inverter is controlled from the digital operator.

Setting Description

0 (Cycle Extrn RUN) - If the run command is closed when switching from local control to remote control,

the inverter will not run. The run command must be cycled for the inverter to run. (factory default)

1 (Accept Extrn RUN) - If the run command is closed, when switching from local control to remote con-

trol, the inverter will run.

A A A A

VS-616G5 Programming Manual 15

Section B: Application Parameters

B2 DC Braking

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B1-08 Run Command Acceptance During Programming RUN CMD at PRG

As a safety precaution the drive will not respond to a change in the run command when the digital
operator is being used to set or adjust parameters.This parameter will allow the drive to accept or
reject a change in the run command when the digital operator is being used to change or adjust param­eters. <1110>

Table 1:

Setting Description

0 Run command is disabled when drive is in the programming mode. (factory default)
1 Run command is enabled when the drive is in the program mode

B2 DC Braking

B2-01 DC Braking Frequency (Zero Speed Level) DCInj Start Freq

Setting Range: 0.0 to 10.0Hz
Factory Default: 0.5Hz

Sets the frequency at which DC injection braking (or initial excitation for flux vector control) starts, in
units of 0.1 Hz. When B2-01 < E1-09, DC injection braking starts from the minimum frequency refer­ence (E1-09).

A A A A

B B B B

B2-01

DC Injection
Braking Frequency

B2-03

DC Injection Braking
Time at Start

Figure 5 DC Injection Braking at Starting

B2-02 DC Braking Current DCInj Current

Setting Range: 0 to 100%
Factory Default: 50%

DC injection braking current is set as a percentage of inverter rated current. In flux vector control
mode, initial excitation is performed according to the motor no-load current set in E2-03. This param-
eter should not be set unnecessarily high or motor overexcitation may occur.

B B B -

16 VS-616G5 Programming Manual

Section B: Application Parameters

B2 DC Braking

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B2-03 DC Braking Time at Start DCInj Time@Start

Setting Range: 0.00 to 10.00s
Factory Default: 0.00s

DC injection braking at start can be used to stop a spinning motor (or when motor rotation direction is
unknown) prior to running. DC injection braking time at start (or initial excitation for flux vector con­trol) is set in units of 0.1 second. When B2-03 is set to “0”, DC injection braking is disabled and accel­eration starts from the minimum output frequency.

B2-04 DC Braking Time at Stop DCInj Time@Stop

Setting Range: 0.00 to 10.00s
Factory Default: 0.00s

DC injection braking time at stop (or initial excitation for flux vector control) is set in units of 0.1 sec­ond. When B2-04 is set to “0”, DC injection braking is disabled, and the inverter output shuts OFF.

E1-09

Min. Output Frequency

B B B B

B B B B

B2-04

DC injection Braking
Time at Stop

Figure 6 DC Injection Braking Time at Stop

When coast to stop is selected as the stopping method (B1-03), DC injection braking at stop is disabled.

B2-08 Magnetic Flux Compensation Level <1110> FieldComp

Setting Range: 0 to 500%
Factory Default: 0%

This parameter allows the magnetizing motor flux to be boosted when starting the motor. This parameter
will facilitate a quick ramp-up of the torque reference and magnetizing current reference to reduce motor
slip during start. A setting of 100% equals motor no-load current E1-09. This flux level will be applied
below Minimum Output Frequency (E1-09) until the DC Injection Time at Start (B2-03) expires. This
parameter is useful when starting motors that are relatively larger than the inverter, due to the requirement
for increased magnetizing current. This parameter may also compensate for reduced starting torque due to
motor circuit inefficiencies.

- - A A

VS-616G5 Programming Manual 17

Section B: Application Parameters

B3 Speed Search

B3 Speed Search

When starting into a coasting motor, use the speed search command or DC injection braking at start, to
prevent a drive trip and motor burnout.

This function allows the restart into a coasting motor without the necessity to stop. It is useful during
inverter bypass operation, when switching between the motor receiving power directly from the line
and from the inverter. Two interlocking contactors must be employed for commercial power switcho­ver to prevent line power from being applied to the inverter output terminals.

Set the multi-function contact input selection (H1-01 to H1-06) to “61” (start search command from
maximum output frequency), “62” (start search command from the set frequency), or “64” (start
search command from the SFS frequency when baseblock is applied).

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B3-01 Speed Search after Run Command SpdSrch at Start

A - A -

Setting Description

0 Speed search disabled, the motor accelerates to the set frequency from the

min. frequency reference after run command is given (factory default).

1 Speed search enabled after run command is given, according to multi-func-

tion contact input selection. When using an encoder, the motor accelerates/
decelerates to the set frequency from the motor speed.

Note: This parameter is disabled except when (A1-02=1) (V/F w/PG Fdbk) or 3 (Flux Vector)

B3-02 Speed Search Detection Current Level SpdSrch Current

Setting Range: 0 to 200%
Factory Default: 150%

After power loss and recovery, speed search begins to ramp the frequency down from a specified point in
order to locate the frequency of the spinning motor. During initial speed search the inverter’s output cur­rent exceeds the speed search detection current level. This level is set as a percentage of inverter rated
current. When the inverter’s output current is less than the speed search detection level, the frequency is
interpreted as the speed agree level, and the inverter accelerates/decelerates to the specified frequency.

A - A -

Note: Factory setting defaults to 150 when A1-02=0 (V/F Control). When A1-02=2 (Open Loop Vec-

tor), the default is 100.

18 VS-616G5 Programming Manual

Section B: Application Parameters

B4 Delay Timers

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B3-03 Speed Search Deceleration Time SpdSrch Dec Time

Setting Range: 0.1 to 10.0s
Factory Default: 2.0s

Sets deceleration time during speed search in units of 0.1 second. When speed search deceleration time
is set to 0.0 second, speed search is disabled. The speed search deceleration time should be set to be
somewhat faster than the decel rate of coasting motor. Build an input sequence so that the speed search
command is input at the same time or prior to the FWD (REV) run command. If the run command is
input before the search command, the search command is not effective. Below is a timing diagram of
the search command input:

FWD (REV) Run Command

Speed Search Command

Max. Output Frequency,
Frequency Reference at

Run Command Input,

or SFS Output Frequency

Output Frequency

Motor Speed

ON

Min. Baseblock
Time (L2-03)

Speed Search
Decel Time (B3-03)

Speed Search
Operation

Coasting Accelerating

ON

A - A -

B3-02

Figure 7 Search Command Input Timing Diagram

B4 Delay Timers

The inverter input and output contacts can be used in place of an external timer. When multi-function
contact input (H1-__ = “18”) is closed, a multi-function contact output (H2-__ = “12”) can be set to
close after the On-delay time (B4-01) has expired. When multi-function contact input (H1-__ = “18”)
is opened, a multi-function contact output (H2-__ = “12”) can be set to open after the Off-delay time
(B4-01) has expired. This function operates independently of any action the inverter is performing.

B4-01 On-delay Timer Delay-ON Timer

Setting Range: 0.0 to 100.0s
Factory Default: 0.0s

Sets the ON-delay time in units of 0.1 second. The multi-function input must be “closed” for longer
than the ON-delay timer for the multi-function output to close.

Speed Agree Detected

Output Current

A A A A

VS-616G5 Programming Manual 19

Section B: Application Parameters

B5 PID Control

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B4-02 Off-delay Timer Delay-OFF Timer

Setting Range: 0.0 to 100.0s
Factory Default: 0.0s

Sets the OFF-delay time in units of 0.1 second. The multi-function input must be “open” for longer
than the OFF-delay timer for the multi-function output to open.

Multi-function Contact
Input: Timer Function

Multi-function Contact
Output: Timer Function

B4-01

ON

ON

B4-02

ON ON ON

B4-01 B4-02

Figure 8 Timing Diagram of Timer Function

B5 PID Control

The Proportional, Integral and Derivative (PID) control function provides closed-loop control and reg­ulation of a system variable such as temperature or pressure. A control signal based on the difference
(or proportion) between a feedback signal and a desired setpoint is produced. Integration and deriva­tive calculations are then performed on this signal, based upon the PID parameter settings (B5-01 to
B5-08), to minimize deviation, for more precise control.

A A A A

ON

ON ON ON

ON

Proportional - P

PID refers to the type of action used to control modulating equipment such as valves or dampers. With
proportional control, a control signal based on the difference between an actual condition and a
desired condition is produced. The difference, such as that between an actual temperature and setpoint
is the “error”. The inverter adjusts its output signal related directly to the error magnitude.

Integral - I

The integral action is designed to minimize offset. An integrating term is used to observe how long the
error condition has existed, summing the error over time. Once the system has stabilized, the offset
would be minimized.

Derivative - D

Overshoot refers to a control loop tendency to overcompensate for an error condition, causing a new
error in the opposite direction. Derivative action provides an anticipatory function that exerts a “brak­ing” action on the control loop. When combined, the proportional integral, and derivative actions pro­vide quick response to error, close adherence to the setpoint, and control stability.

20 VS-616G5 Programming Manual

Section B: Application Parameters

Figure 9 PID Block Diagram

VS-616G5 Programming Manual 21

Figure 9 PID Block Diagram

Section B: Application Parameters

B5 PID Control

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B5-01 PID Control Mode Selection PID Mode

To enable PID control, set PID control mode selection to “1” or “4”, according to the description
below. Also be sure to set terminal 16 function selection (H3-05) to PID feedback (setting: “B”).

Setting Description

0 PID disabled (factory default)
1 PID enabled (deviation signal is put through derivative control)
2 PID with feed forward (feedback signal is put through derivative control)

3 <1110> Reference= Frequency reference + PID output, D is Fdbk

4 <1110> Reference= Frequency reference + PID output, D is feed-forward

Notes:

1. PID with feed forward applies control much quicker than normal PID, without waiting for
the deviation signal to build up.

2. A PID inverse feedback signal can be selected by inverting the settings for terminal 16
gain and bias.

Then select the PID control intended value setpoint or detected feedback value setpoint as follows:

Intended Value Setting
The control circuit terminal 16 voltage signal (0 to 10V, -10 to 10V) or multi-step speed parameters H1­03 to H1-06 can be used to set the PID intended value.

A A A A

Control circuit terminal 16 voltage signal:

Set reference selection (B1-01) to “1”.

Multi-step speed parameters (H1-03 to H1-06):

Set reference selection (B1-01) to “0”.
(combination of multi-step speed references and jog frequency reference)

Detected Value Setting (Feedback)

The control circuit terminal 14 current signal (4 to 20mA) or voltage signals (0 to 10V, -10 to 10V) can
be used to set the PID detected value.

Control circuit terminal 14 current signal:

Set terminal 14 signal selection (H3-08) to “2”.

Control circuit terminal 14 voltage signal:

Set terminal 14 signal selection (H3-08) to “0”or “1”.

22 VS-616G5 Programming Manual

Notes:

1. I value is reset to ”0” when operation stops.

2. The upper limit of the I value can be set by parameter B5-04.

Increase the value of parameter B5-04 to upgrade control capability by integration. If the control
system vibrates and it cannot be stopped by adjusting the integral time, output delay time, etc.,
decrease the set value of parameter B5-04.

3. PID control can be canceled by a multi-function contact input signal.

By setting any of parameters H1-01 to H1-06 to “19” and by closing the contact during running,
PID control is disabled and the intended value signal itself is used as a frequency reference signal.

Section B: Application Parameters

B5 PID Control

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B5-02 PID Control Proportional Gain PID Gain

Setting Range: 0.00 to 25.00
Factory Default: 1.00

The proportional gain is the value by which the deviation signal is multiplied to generate a new fre­quency reference.

B5-03 PID Control Integral Time PID I Time

Setting Range: 0.00 to 360.0 seconds
Factory Default: 1.00 seconds

The integral calculation sums the deviation over time, which eliminates the offset, thus achieving the
intended value. The integral time determines how quickly the integral gain increase is added to the
control loop.

B5-04 PID Control Integral Limit PID I Limit

Setting Range: 0.0 to 100.0%
Factory Default: 100.0%

The integral limit value eliminates oscillations and improves stability. This value is set as a percentage
of maximum output frequency (E1-04).

A A A A

A A A A

A A A A

B5-05 PID Control Derivative Time PID D Time

A A A A

Setting Range: 0.00 to 10.00 seconds
Factory Default: 0.00 seconds

The derivative calculation attempts to control the remaining overshoot left over after the proportion
and integral calculations. If the system is approaching the intended value very rapidly, the derivative
control produces a strong braking action to prevent overshoot. If the system is already stable with very
little deviation change, derivative control has very little effect. The derivative time is used to dampen
oscillations and reduce overshoot, thus improving stability. Setting the derivative time to a larger num­ber produces more braking action in the control system.

VS-616G5 Programming Manual 23

Section B: Application Parameters

B5 PID Control

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B5-06 PID Control Limit PID Limit

Setting Range: 0.0 to 100.0%
Factory Default: 100.0%

The PID limit value further eliminates oscillations and improves stability. This value is set as a per­centage of maximum output frequency (E1-04).

B5-07 PID Control Offset PID Offset

Setting Range: -100.0% to +100.0%
Factory Default: 0.0%

The PID offset adds a bias to the calculated PID value, in order to reduce any offset.

B5-08 PID Control Output Primary Delay Time PID Delay Time

Setting Range: 0.00 to 100.0 seconds
Factory Default: 0.00 seconds

The output delay time is used to delay changes in the calculated PID value, which can prevent oscilla­tions and improve stability.

A A A A

A A A A

A A A A

Parameters B5-04 and B5-06 to B5-08 are preset at the factory to optimum values for most applica­tions, hence, do not need to be changed. When tuning a system, first adjust the proportional gain until
oscillations are reduced. Then adjust the integral time so that minimal deviation is achieved as quickly
as possible, without oscillations. Finally, adjust the derivative time to reduce any overshoot at start-up.

B5-09 PID Output Selection <1110> Output Level Sel

The PID output term for the inverter control can be either negative or positive output.

Setting Description

0 PID Normal or Forward Output (factory default)

Increase in the manipulated variable when the process variable is larger than
the setpoint and decrease the manipulated variable when the process vari­able is smaller.

1 PID Reverse or Inverse Output

Increase the manipulated variable when the process variable is smaller than
the setpoint and decrease the manipulated variable when the process vari­able is larger than the setpoint.

A A A A

24 VS-616G5 Programming Manual

Section B: Application Parameters

B5 PID Control

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B5-10 PID Output Gain <1110> Output Gain

Setting Range: 0.0 to 25.0
Factory Default: 1.0

This parameter sets the gain of the PID output. The PID output can be monitored by parameter U1-37

PID Output Monitor. Refer to PID Block Diagram Figure 9.

B5-11 PID Output Reverse <1110> Output Rev Sel

This parameter is used when the motor is required to change direction during PID operation in
response to a negative PID output signal. The PID output can be monitored using parameter U1-37
PID Output Monitor.

Setting Description

0 Zero limit (factory default)

When PID output is negative, motor direction is not changed. The PID output
is limited to 0.

1 Reverse

When PID output is negative the motor will reverse direction.

A A A A

A A A A

Note: When Reverse Prohibit B1-04 is selected, reverse will not operate.

B5-12 Loss of Feedback Action <1110> Fb Los Det Sel

This parameter is used to select what action the inverter will take on a loss of PID feedback. A loss of
PID feedback occurs when the feedback signal falls below the B5-13 Feedback Loss Detection Level
for the time set by B5-14 Feedback Loss Detection Time.

Setting Description

0 Disabled (factory default)

PID feedback missing detection is disabled.

1 Alarm

PID feedback missing detection is enabled. Operation continues after loss of
feedback. The text “Fbl” will be displayed on the digital operator.

2 Fault

PID feedback missing detection is enabled. The inverter output to the motor
is shut off (the motor is stopped) and “Fbl” is displayed on the digital operator.

A A A A

VS-616G5 Programming Manual 25

Section B: Application Parameters

B6 Reference Hold

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B5-13 PID Feedback Loss Detection Level <1110> Fb los Det Lvl

Setting Range: 0 to 100%
Factory Default: 1%

This parameter sets the level at which a loss of PID feedback is detected. The PID feedback must be at
or below this level for the time defined by B5-14 before a loss of feedback can be detected. A setting
of 100% represents 100% of the feedback signal.

B5-14 PID Output Gain <1110> Output Gain

Setting Range: 0.0 to 25.0
Factory Default: 1.0

This parameter sets the gain of the PID output. The PID output can be monitored by parameter U1-37
PID Output Monitor. Refer to PID Block Diagram Figure 9.

B6 Reference Hold

The reference hold or dwell function is used to temporarily hold the output frequency at a set refer­ence, for a set time, and then start it again. This function can be used when driving a permanent magnet
motor, or a motor with a heavy starting load. This pause in acceleration allows the magnets in a perma­nent magnet motor to synchronize with the stator field of the motor, thus reducing traditionally high
starting current.

A A A A

A A A A

B6-01 Dwell Frequency Reference at Start Dwell Ref @Start

Setting Range: 0.0 to 400.0Hz
Factory Default: 0.0Hz

Sets the dwell frequency reference during acceleration in units of 0.1Hz.

B6-02 Dwell Time at Start Dwell Time@Start

Setting Range: 0.0 to 10.0s
Factory Default: 0.0s

Sets the amount of time that the frequency reference “dwells” during acceleration in units of 0.1s.

B6-03 Dwell Frequency Reference at Stop Dwell Ref @Stop

Setting Range: 0.0 to 400.0Hz
Factory Default: 0.0Hz

Sets the dwell frequency reference during deceleration in units of 0.1Hz.

A A A A

A A A A

A A A A

26 VS-616G5 Programming Manual

Section B: Application Parameters

B7 Droop Control and B8 Energy Saving

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B6-04 Dwell Time at Stop Dwell Time @Stop

Setting Range: 0.0 to 10.0s
Factory Default: 0.0s

Sets the amount of time that the frequency reference “dwells” during deceleration in units of 0.1s.

B7 Droop Control

The Drooping function reduces the motor speed based on the load torque of the motor.

B7-01 Droop Control Gain Droop Quantity

Setting Range: 0.0 to 100.0
Factory Default: 0.0

Parameter b7-01 sets the amount of motor speed reduction when the motor is producing 100% of rated
torque. The actual amount of motor speed reduction is based on the ratio of the amount of motor
torque and the maximum output frequency (E1-04).

B7-02 Droop Control Delay Time Droop Delay Time

Setting Range: 0.03 to 2.00
Factory Default: 0.05

A A A A

- - - A

- - - A

Parameter b7-02 sets the response time for the drooping function. Decreasing the droop delay time,
will cause the response to become quicker; however, instability may occur.

B8 Energy Saving

This feature can save energy during operation under lightly loaded conditions, by decreasing output
voltage, energy-saving operation is made available. Energy saving control is enabled by a multi-func-
tion contact input, when control mode selection (A1-02) is set to “0” (V/f Control) or “1” (V/f w/PG
Fdbk).
Parameters B8-03, B8-04 and B8-05 are for energy savings in the vector modes. B8-01 and B8-02 are
only functional in the V/f modes via a multi-function input command. Parameters B8-03, B8-04 and
B8-05 are for automatic energy savings in the vector modes.

B8-01 Energy Saving Gain Energy Save Gain

Setting Range: 0 to 100%
Factory Default: 80%

The output voltage during energy-saving operation is the product of the normal V/f settings (El-03 to
E1-10) and the energy saving gain. The output voltage decreases and recovers in the voltage recovery
time (L2-04). As the energy saving gain increases, the output voltage increases also. This feature is

only enabled by a multi-function contact input.

A A - -

VS-616G5 Programming Manual 27

Section B: Application Parameters

B8 Energy Savings

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B8-02 Energy Saving Starting Frequency Energy Save Freq

Setting Range: 0.0 to 400.0Hz
Factory Default: 0.0Hz

After the multi-function contact input for energy-saving operation closes (H1-__, setting: “63”), the
output voltage is decreased when the output frequency reaches the energy-saving starting frequency.
This feature is only enable by multi-function contact input.

.

B8-03 Automatic Energy Saving <1110> Energy Save Sel

This parameter is used to select if Automatic Energy Saving Mode is to be on or off. A multi-function
contact input is not required to activate Automatic Energy Saving Mode. This mode of operation auto­matically searches for the optimum motor voltage required to save energy. This function is separate
and not to be confused with parameters B8-01 and B8-02. The energy saving mode that utilizes B8-01
and B8-02 requires a multi-function input to be activated for operation. This Automatic Energy Sav­ing Mode selection does not require a multi-function input to activate operation.

Setting Description

0 Disabled (factory default)

Energy saving mode will not be activated under light loads.

1 Enabled

The energy saving mode will be activated under light loads.

A A - -

- - A A

B8-04 Energy Saving Control Gain Energy Save Gain

Setting Range: 0 to 10.0
Factory Default: 0.7

The output voltage during energy-saving operation is the product of the normal V/f settings (El-03 to

E1-10) and the energy saving gain. The output voltage decreases and recovers according to the Energy­Saving Control Time Constant B8-05. As the energy saving gain increases, the output voltage

increases also.

Note: When the control mode A1-02=3, the default factory setting becomes 1.0

B8-05 Energy Control Time-Constant Energy Save F. T

Setting Range: 0.00 to 10.00
Factory Default: 0.50

Parameter B8-05 sets the response time for the Automatic Energy Saving function.
Decreasing the Energy Control Time-Constant, will cause the response to become quicker; however,
instability may occur if this is decreased too much.
Note: When control mode A1-02=3, the default factory setting becomes 0.01.

- - A A

- - A A

28 VS-616G5 Programming Manual

FWD

Energy
Saving

Command
(Multi-function input
setting = “63”)

Fout

Section B: Application Parameters

B9 Zero Servo

V/f V/f w/PG

Fref ≥ B8-02

Open Loop

Vector

Flux

Vector

Vout

L2-04

V/f Pattern × Energy Saving Gain (B8-01)

Figure 10 Timing Diagram of Energy Saving Function

B9 Zero Servo

The zero servo function is enabled when the multi-function contact input is set to zero servo command
(H1-__ = “72”). The motor position is then memorized when motor speed feedback is less than the
zero speed level (B2-01).

B9-01 Zero Servo Gain Zero Servo Gain

Setting Range: 0 to 100
Factory Default: 5

Sets the zero-servo position loop gain. When adjusting the gain, the higher the setting, the quicker the
response. However, if the gain is set too high, it can cause overshoot and a possible runaway condition.

B9-01

Kp

∫

Deviation
Counter

Speed Reference

Motor Speed Feedback

0

(Position Ref.)

+

-

Motor
Position

- - - A

Figure 11 Zero Servo Position Loop

B9-02 Zero Servo Bandwidth Zero Servo Count

- - - A

Setting Range: 0 to 16383 pulses
Factory Default: 10 pulses
Sets zero servo bandwidth in units of one pulse. During zero servo control, the multi-function contact
output (H2-__ = “33”) is closed until the number of pulses (or bandwidth) is completed. Then the con­tact output opens.

VS-616G5 Programming Manual 29

Section C: Tuning Parameters

C1 Accel/Decel

.

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

Zero Servo Function
(Multi-function Input
H1-__ setting = “72”)

Zero Servo Completion
(Multi-function Output
H2-__ setting = “33”)

Notes:

1. For multi-function contact input function selection, refer to parameters H1-01 to H1-06.

2. For multi-function contact output function selection, refer to parameters H2-01 to H2-03.

3. This function is only available during flux vector control (Al-02 = “3”).

C Tuning Parameters

C1 Accel/Decel

OFF

(Factory Default: 0.5Hz)

Zero Servo Loop

ON

Motor Speed

Zero Servo Bandwidth

Position Deviation

ON

Zero Speed Level

(B2-01)

Speed Loop

(B9-02)

OFF

Figure 12 Timing Diagram of Zero Servo Function

C1-01 Acceleration time 1 Accel Time 1
C1-02 Deceleration time 1 Decel Time 1
C1-03 Acceleration time 2 Accel Time 2
C1-04 Deceleration time 2 Decel Time 2
C1-05 Acceleration time 3 Accel Time 3
C1-06 Deceleration time 3 Decel Time 3
C1-07 Acceleration time 4 Accel Time 4
C1-08 Deceleration time 4 Decel Time 4

Setting Range: 0.00 to 6000.0s
Note: Setting range may be 0.00-600.0 or 0.0-6000.0 depending on the setting of parameter C1-10.
Factory Default: 10.0s
Acceleration time sets the time necessary for the output frequency to accelerate from 0Hz to maximum
output frequency. Deceleration time sets the time necessary for the output frequency to decelerate from
the maximum output frequency to 0Hz.

Q Q Q Q
Q Q Q Q
B B B B
B B B B
A A A A
A A A A
A A A A
A A A A

30 VS-616G5 Programming Manual