Yaskawa CIMR-V7AM-091 User Manual

V

Software Numbers: VSP015166 (0.4 - 3.7kW)

VSP015292 (5.5 - 7.5kW)

Drive Part Number: CIMR-V7AM*-091

7 Custom Software

Kinetic Energy Back-up

(KEB)

Please note that the high horsepower version VSP015292
contains both the KEB function as well as the Traverse
function. The low horsepower traverse function is available
in software VSP018031 (CIMR-V7AM*-029). Refer to the
manual TM.V7SW.029 for Traverse function details.

Yaskawa Electric America, Inc.

Rev. <1>: July 19, 2001, VSP015164
Rev. <2>: January 8, 2002, VSP015166
Note: This manual is a YEA version of EZZ008774-2.

Date: 02/20/05, Rev: 05-02 Page 1 of 15 TM.V7SW.091

1. Basic Specification

The basic specifications of KEB (Kinetic Energy Back-up) function are in conformance with the
description of the V7 Technical Manual (TM.V7.01). The following outlines the exclusive
specifications.

In order to prevent the drive from tripping at low voltage because of a momentary power loss or
power failure during operation or the motor from coasting for a long time period, the drive detects a
momentary power loss or power failure immediately when it occurs, and continues control using the
regenerative energy from the motor or decelerates to a stop. (The KEB function and the standard
software function momentary power loss ride through cannot be used simultaneously.)

The power supply is monitored according to the status of the multi-function digital input terminals;
the motor re-accelerates to the former speed at recovery from the power loss (Power loss
detecting relay must be mounted externally and the run command must be kept during momentary
power loss).

Automatic power loss detection function is available in order to make the motor switch to the
regenerated status promptly without tripping even at a momentary power loss or power failure
during high-load operation (However, perfect prevention from tripping depends on the load ratio,
load inertia, motor characteristics or capacitor size in the drive).

Note: This software does not support the energy-saving control.

Date: 02/20/05, Rev: 05-02 Page 2 of 15 TM.V7SW.091

2. Details of KEB Specification

2.1 Basic Circuit

The KEB function becomes active when parameter n081 (Operation after Recovery from
Momentary Power Loss) is set to 3 (KEB Continuous Operation) or when a multi-function digital
input terminal is set to the KEB command. To restore the motor to the former operation status upon
recovery from a power loss, program one of the multi-function digital input terminals S1 to S7 (n050
to 056) to the KEB command (set values: 28 or 29) as shown in the following table. The run
command must also be maintained during the momentary power loss. When the run command is
removed during the momentary power loss, the drive continues decelerating to a stop even if power
returns.

Power Supply

Transformer

SA

B1 B2

R(L1)

S(L2)

T(L3)

S1 Forward Run

S7 KEB Command
n056=××

SC

R

U(T1)

V(T2)

W(T3)

Regenerative
Energy

IM

・ When regenerative energy is too

large and causes an overvoltage
(OV) trip, connect a braking
resistor.

Date: 02/20/05, Rev: 05-02 Page 3 of 15 TM.V7SW.091

2.2 Added / Modified Parameters

No.

n045 Reserved KEB deceleration time 1
n046 Reserved KEB deceleration time 2
n047 Reserved KEB deceleration Ratio changeover time
n048 Reserved KEB starting voltage

n049 Reserved
n139 Energy saving control selection AVR time constant

n140 Energy saving coefficient K2 Undervoltage detection level
n141 Energy saving control voltage lower limit (@ 60Hz) Operation selection at power ON

n142 Energy saving control voltage lower limit (@ 6Hz)
n143 Power average time KEB compensation time

n144 Search operation voltage limit Power loss detection relay delay time
n145 Search operation voltage step (@100%) KEB re-acceptance prohibition time
n146 Search operation voltage step (@5%) Reserved

n159
n160

n161 Search operation power detection hold width Negative slope time
n162 Time constant of power detection filter Positiv e slope time
n170 Reserved Disturb waveform selection
n171 Reserved Stall prevention during acceleration selection
n172 Reserved Stall prevention voltage during acceleration

Upper voltage limit for energy saving control
Upper voltage limit for energy saving control

5.5/7.5kW standard
VSP010104

Stall prevention during deceleration (braking

Selection of br aking transistor ope ration

(@60Hz)

(@6Hz)

5.5/7.5kW KEB software
VSP01529x

transistor operational) voltage

during stop

Disturb waveform amplitude

Disturb waveform Jump

Note: Reference manual TM.V7SW.029 for details on the Traverse function.

2.3 Setting Range Changes

No. Parameter name Settings

Additional selections:

n050 -

n056

n057 -

n059

n081 Operation selection after momentary power loss

Multi-function input selection 1-7

Multi-function output selection 1-3

28: KEB command (NO)
29: KEB command (NC)
30: Disturb disable (opened = enabled)
31: Simple synchronized Accel/Decel

Additional selections:

22: During KEB operation
23: High-speed operation
24: During disturb up
25: During disturb

Additional selection:

3: KEB operation

Date: 02/20/05, Rev: 05-02 Page 4 of 15 TM.V7SW.091

2.4 KEB Function Related Parameters

Modbus

No.

Register

n050 to

0132H to

n056

0138H

n057 to

0139H to

n059

013BH

n081 0151H

n045 012DH

n046 012EH

n047 012FH

n048 0130H

Name Description

Multi-function

Digital Input

Selection 1 - 7

Multi-function
Digital Output

Selection 1 - 3

Selection of

Operation after

Momentary Power

Loss

KEB Deceleration

Time 1

KEB Deceleration

Time 2

KEB Deceleration

Ratio Changeover

Time

KEB Starting

Voltage

Programming the KEB command (settings NO
contact: 28 or NC contact: 29) to a multi-function
digital input enables the KEB function, resulting in
re-acceleration at recovery from the power loss. If a
KEB command is not programmed, operation follows
the setting of parameter n081.
22: During KEB Operation
KEB signal is output dur ing KEB deceleration or
re-acceleration. This function is not active if the
KEB function is not programmed.

23: High-Speed Operation

<1>

This output closes during speed agree the
high-speed (main) frequency selection (when none
of the multi-function digital input functions Multi-step
Speed 1-4 or Jog are closed.).

The output cycles close/open every 0.5 seconds
during speed agree (except for the main speed
reference). The output cycles close/open every 1
second during acceleration or deceleration
regardless of the frequency reference. The output
opens while stopping. This function is active even if
the KEB function is not programmed.

15: Undervoltage Detection
In addition to the standard software conditions of
Undervoltage, the output will also close during
deceleration due to the KEB function.

30: Disturb waveform disable
Signal disables the disturb waveform.

Note: Function available in large HP version only
(VSP01529X).

31: Simple synchronized Accel/Decel
When the signal is input, the Accel/Decel times are
modified as follows:

Time = A ccel/D ecel time x (Fmax / Fref)

Note: Function available in large HP version only
(VSP01529X).

0: Operation not continued.
1: Ride Through. Operation continued at recovery

from power loss within 0.5 second

2: CPU Ride Through. Operation continued at

recovery from power loss (no fault output).

3: KEB Operation.
When KEB operation starts, the motor decelerate s
in KEB Deceleration Time 1. After KEB

Deceleration Ratio Changeover Time, the motor
decelerates in KEB Deceleration Time 2.
The setting unit of KEB Deceler ation Times 1 and 2
depends on the setting of parameter n018:
Accel/Decel Time Setting Unit.

The drive starts KEB operation when main circuit
DC bus voltage becomes less than the KEB
detection voltage value or when the multi-function
digital input function “KEB Command” is closed.

Note: Parameter n081: Momentary Powe r Loss

must be set to 3.

Setting
Range

0 to 3 3

0.00 to

6000 sec

0.00 to

6000sec

0.00 to

2.55sec

135 to

300Vdc

Initial
Value

KEB command cannot

- -

- -

10.0sec

10.0sec

0.10sec

225Vdc

be set to more than two

terminals and settings

28 and 29 cannot be
set at the same time.

All multi-function digital

100msec minimum

Parameters can be set

The setting range and

the initial value are

doubled for 460V units.

Remarks

outputs have a

state length.

during running.

Date: 02/20/05, Rev: 05-02 Page 5 of 15 TM.V7SW.091