To properly use the product, read this manual thoroughly and retain
for easy reference, inspection, and maintenance. Ensure the end user
receives this manual.
200 V Class: 7.5 to 75 kW (10 to 100 HP ND)
400 V Class: 5.5 to 260 kW (7.5 to 350 HP ND)
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means,
mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of Yaskawa. No patent
liability is assumed with respect to the use of the information contained herein. Moreover, because Yaskawa is constantly
striving to improve 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. 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.
The initialization group contains parameters associated with initial drive setup, including parameters involving the display
language, access levels, initialization, and password.
u
A1: Initialization
A1-00: Language Selection
n
Selects the display language for the HOA keypad.
Note:This parameter is not reset when the drive is initialized using parameter A1-03.
No.Parameter NameSetting RangeDefault
A1-00Language Selection0, 1, 3, 5, 60
Setting 0: English
Setting 1: Japanese
Setting 3: French
Setting 5: Spanish
Setting 6: Portuguese
A1-01: Access Level Selection
n
Allows or restricts access to drive parameters.
No.Parameter NameSetting RangeDefault
A1-01Access Level Selection0 to 22
Setting 0: Operation Only
A1-01, A1-04, and Drive Mode can be accessed and set. All U monitor parameters can be accessed. Parameters that are set
in A2-01 to A2-32 can be accessed in Setup Mode. Verify Mode, Setup Mode, and Auto-Tuning Mode cannot be accessed.
Setting 1: User Parameters
A1-00, A1-01, A1-04, and Drive Mode can be accessed and set. All U monitor parameters can be accessed. Parameters that
are set in A2-01 through A2-32 can be accessed in Setup Mode. Verify Mode and Auto-Tuning Mode cannot be accessed.
Setting 2: Advanced Access Level (A)
All parameters can be viewed and edited.
Notes on Parameter Access
• If the drive parameters are password protected by A1-04 and A1-05, parameters A1-01 through A1-03, A1-07, and A2-01
through A2-32 cannot be modified.
•
If a digital input terminal programmed for “Program lockout” (H1-oo = 1B) is enabled, parameter values cannot be
modified, even if A1-01 is set to 1 or 2.
• If parameters are changed via serial communication, it will not be possible to edit or change parameter settings with the
HOA keypad until an Enter command is issued to the drive from the serial communication.
A1-02: Control Method Selection
n
Selects the Control Method (also referred to as the control mode) that the drive uses to operate the motor. Parameter A1-02
determines the control mode for the motor.
Note:When changing control modes, all parameter settings depending upon the setting of A1-02 will be reset to the default.
No.Parameter NameSetting RangeDefault
A1-02Control Method Selection0, 50
Setting 0: V/f Control for Induction Motors
Use this mode for simple speed control and for multiple motor applications with low demands to dynamic response or speed
accuracy. The speed control range is 1:40.
Use this mode when running a PM motor in variable torque applications that benefit from energy efficiency. The drive can
control an SPM or IPM motor with a speed range of 1:20 in this control mode.
A1-03: Initialize Parameters
n
Resets parameters to default values. After initialization, the setting for A1-03 automatically returns to 0.
No.Parameter NameSetting RangeDefault
A1-03Initialize Parameters
Setting 0: No Initialize
Setting 1110: User Initialize
0, 1110, 2220,
3330, 3410, 3420
0
Resets parameters to the values selected by the user as User Settings. User Settings are stored when parameter o2-03 is set to
“1: Set defaults”.
Note:User Initialization resets all parameters to a user-defined set of default values previously saved to the drive. Set parameter o2-03 to 2 to
Setting 2220: 2-Wire Initialization
clear the user-defined default values.
Resets parameters except parameters listed in Table 1.1 to default settings with digital inputs S1 and S2 configured as Forward
run and Reverse run, respectively. Refer to Setting 40, 41: Forward Run, Reverse Run Command for 2-Wire Sequence on
page 84 for more information on digital input functions.
Setting 3330: 3-Wire Initialization
Resets parameters to default settings with digital inputs S1, S2, and S5 configured as Run, Stop, and Forward/Reverse
respectively. Refer to Setting 0: 3-Wire Sequence on page 79 for more information on digital input functions.
Setting 3410: HVAC Initialization
Resets parameters to default settings. The following parameters are not reset:
H1-03: b1 (Customer Safeties)
H1-04: b2 (BAS Interlock)
H1-05: AF (Emergency Override Forward Run)
H2-03: b2 (BAS Interlock Relay Contact)
Note:After performing an HVAC Initialization, H1-03 to H1-05 and H2-03 will be displayed in the Modified Parameters list.
Setting 3420: OEM Bypass Initialization
Resets parameters to default settings. The following parameters are not reset:
H1-03: A7 (BP Customer Safeties)
H1-04: A6 (BP BAS Interlock)
H1-05: A4 (Emergency Override)
H1-06: AE (BP Bypass Run)
H2-01: A4 (BP Drive Relay)
H2-02: A5 (BP Bypass Relay)
H2-03: A6 (BP BAS Interlock)
o1-16: 2 (Drive/Bypass)
Note:After performing an OEM Bypass Initialization, H1-03 to H1-05, H2-01 to H2-03, and o1-16 will be displayed in the Modified Parameters
list.
Notes on Parameter Initialization
The parameters shown in Table 1.1 will not be reset when the drive is initialized by setting A1-03 = 2220 or 3330. Although
the control mode in A1-02 is not reset when A1-03 is set to 2220 or 3330, it may change when an application preset is selected.
Table 1.1 Parameters Not Changed by Drive Initialization
No.Parameter Name
A1-00Language Selection
A1-02Control Method Selection
E1-03V/f Pattern Selection
F6-08Communication Parameter Reset
L8-35Installation Selection
o2-04Drive Model Selection
A1-04, A1-05: Password and Password Setting
n
Parameter
A1-04
enters the password when the drive is locked; parameter A1-05 is a hidden parameter that sets the password.
No.Parameter NameSetting RangeDefault
A1-04Password
A1-05Password Setting
0000 to 99990000
How to Use the Password
The user can set a password in parameter A1-05 to restrict access to the drive. The password must be entered to A1-04 to
unlock parameter access (i.e., parameter setting A1-04 must match the value programmed into A1-05). The following
parameters cannot be viewed or edited until the value entered to A1-04 correctly matches the value set to A1-05: A1-01, A1-02,
A1-03, A1-06, and A2-01 through A2-33.
The instructions below demonstrate how to set password “1234”. An explanation follows on how to enter that password to
unlock the parameters.
Table 1.2 Setting the Password for Parameter Lock
StepDisplay/Result
1.Turn on the power to the drive. The initial display appears.
- MODE -PRG
Programming
2.
Press
or until the Parameter Setting Mode screen appears.
HELP
FWD
DATA
3.
4.
5.
6.
7.
12
Press
to enter the parameter menu tree.
Select the flashing digits by pressing
Select A1-04 by pressing .
Press while holding down
Note:
A1-05 is hidden and will not display by pressing only .
Use and to change the value if desired (though changing the control mode at this point is
9.
not typically done).
and scroll to A1-02.
to display the value set to A1-02. If the first “0” blinks, parameter settings are unlocked.
10.
Press to save the setting, or press to return to the previous display without saving changes.
Entry Accepted
11.The display automatically returns to the parameter display.
Note:1. Parameter settings can be edited after entering the correct password.
2. Performing a 2-Wire or 3-Wire initialization resets the password to “0000”.
A1-06: Application Preset
n
Several Application Presets are available to facilitate drive setup for commonly used applications. Selecting one of these
Application
Presets
automatically assigns functions to the input and output terminals and sets a predefined group of parameters
to values appropriate for the selected application.
In addition, the parameters most likely to be changed are assigned to the group of User Parameters, A2-01 through A2-16.
User Parameters are part of the Setup Group, which provides quicker access by eliminating the need to scroll through multiple
menus.
u
A2: User Parameters
A2-01 to A2-32: User Parameters 1 to 32
n
The user can select up to 32 parameters and assign them to parameters A2-01 through A2-32 to provide quicker access by
eliminating the need to scroll through multiple menus. The User Parameter list can also save the most recently edited
parameters.
No.Parameter NameSetting RangeDefault
A2-01 to A2-32User Parameters 1 to 32A1-00 to S6-07
<1> This setting is the default setting of the Setup Mode parameters. Refer to TOEPC71063610 User Manual Section 4 for details.
<2> A1-06 determines how the setting of user parameters A2-01 through A2-32 are changed.
Determined by
A1-06
Saving User Parameters
To save specific parameters to A2-01 through A2-32, set parameter A1-01 to 2 to allow access to all parameters, then enter
the parameter number to one of the A2-oo
parameters to assign it to the list of User Parameters. Finally, set A1-01 to 1 to
restrict access so users can only set and refer to the parameters saved as User Parameters.
Determines whether recently edited parameters are saved to the second half of the User Parameters (A2-17 to A2-32) for
quicker access.
No.Parameter NameSetting RangeDefault
A2-33User Parameter Automatic Selection0, 1
Setting 0: Do not save list of recently edited parameters
Determined by
A1-06
Set A2-33 to 0 to manually select the parameters listed in the User Parameter group.
Setting 1: Save list of recently edited parameters
Set A2-33 to 1 to automatically save recently edited parameters to A2-17 through A2-32. A total of 16 parameters are saved
with the most recently edited parameter set to A2-17, the second most recently to A2-18, and so on. Access the User Parameters
using the Setup Mode of the HOA keypad.
Note:User parameters are listed from A2-27 to A2-32. Parameters A2-01 to A2-26 are already listed as defined by default when in Setup Mode.
Make sure to set jumper S1 on the
terminal board to “I” for current
input.
Drive
A1 Analog Input 1
0 or 4 to 20 mA
AC Analog input common
+V
10.5 V, 20 mA power supply
A2 Analog Input 2
A3 Analog Input 3
Jumper S1
A1/A2/A3
Voltage/Current
Selection
V
I
A1 A2 A3
1.2 b: Application
Figure 1.2 Setting the Frequency Reference as a Current Signal to Terminal A2
Switching between Main/Auxiliary Frequency References
The
frequency
reference input can be switched between the analog terminals A1, A2, and A3 using multi-speed inputs. Refer
to Multi-Step Speed Selection on page 52 for details on using this function.
Setting 2: Serial Communication (APOGEE FLN, BACnet, MEMOBUS/Modbus, Metasys N2)
This setting requires entering the frequency reference via the RS-422/RS-485 serial communications port (control terminals
R+, R-, S+, and S-). Refer to MEMOBUS/Modbus Configuration on page 280 for instructions.
Setting 3: Option card
This setting requires entering the frequency reference via an option board plugged into connector CN5-A on the drive control
board. Consult the option board manual for instructions on integrating the drive with the communication system.
Note:If the frequency reference source is set for Option PCB (b1-01 = 3), but an option board is not installed, an oPE05 operation error will be
b1-02: Run Command Selection for AUTO Mode
n
displayed on the digital operator and the drive will not run.
Determines the Run command selection for AUTO mode.
No.Parameter NameSetting RangeDefault
b1-02Run Command Selection for AUTO Mode1 to 31
Setting 1: Control Circuit Terminal
This setting requires entering the Run command via the digital input terminals using one of following sequences:
• 2-Wire sequence 1:
Two inputs (FWD/Stop-REV/Stop). Set A1-03 to 2220 to initialize the drive and preset terminals S1 and S2 to these
functions. This is the default setting of the drive. Refer to
Setting 40, 41: Forward Run, Reverse Run Command for 2-
Wire Sequence on page 84.
• 2-Wire sequence 2:
Two inputs (Start/Stop-FWD/REV). Refer to Setting 42, 43: Run and Direction Command for 2-Wire Sequence 2 on
page 84.
• 3-Wire sequence:
Three inputs (Start-Stop-FWD/REV). Set A1-03 to 3330 to initialize the drive and preset terminals S1, S2, and S5 to these
functions. Refer to Setting 0: 3-Wire Sequence on page 79.
Setting 2: Serial Communication (APOGEE FLN, BACnet, MEMOBUS/Modbus, Metasys N2)
This setting requires entering the Run command via serial communications by connecting the RS-422/RS-485 serial
communication cable to control terminals R+, R-, S+, and S- on the terminal block. Refer to MEMOBUS/Modbus
Configuration on page 280 for instructions.
Setting 3: Option Card
This setting requires entering the Run command via the communication option board by plugging a communication option
board into the CN5 port on the control PCB. Refer to the option card manual for instructions on integrating the drive into the
communication system.
Note:If b1-02 is set to 3, but an option card is not installed in CN5, an oPE05 operation error will be displayed on the HOA keypad and the drive
Selects how the drive stops the motor when the Run command is removed or when a Stop command is entered.
No.Parameter NameSetting RangeDefault
b1-03Stopping Method Selection0 to 31
Setting 0: Ramp to Stop
When the Run command is removed, the drive will decelerate the motor to stop. The deceleration rate is determined by the
active deceleration time. The default deceleration time is set to parameter C1-02.
When the output frequency falls below the level set in parameter b2-01, the drive will start DC injection or Zero Speed Control
depending on the selected control mode.
Setting 1: Coast to Stop
When the Run command is removed, the drive will shut off its output and the motor will coast (uncontrolled deceleration) to
stop. The stopping time is determined by the inertia and the friction in the driven system.
Run
command
Output
frequency
ONOFF
Drive output is shut off
Motor speed
Figure 1.3 Coast to Stop
Note:After
stop is initiated, any subsequent Run command entered will be ignored until the minimum baseblock time (L2-03) has expired. Do
a
not enter Run command until it has come to a complete stop. Use DC Injection at Start (Refer to b2-03: DC Injection Braking Time at
Start on page 22) or Speed Search (Refer to b3: Speed Search on page 23) to restart the motor before it has completely stopped.
Setting 2: DC Injection Braking to Stop
When the Run command is removed, the drive will enter baseblock (turn off its output) for the minimum baseblock time
(L2-03). When the minimum baseblock time has expired, the drive will inject the amount DC current set in parameter b2-02
into the motor windings to brake the motor. The stopping time in DC Injection Braking to Stop is significantly faster compared
to Coast to Stop.
Note:This function is not available in OLV/PM control mode (A1-02 = 5).
Run
command
Output
frequency
Motor speed
ONOFF
DC Injection Braking
with the current set in
Motor coasts
b2-02
Minimum Baseblock
Time (
L2-03)
Figure 1.4 DC Injection Braking to Stop
DC Injection Braking time is determined by the value set to b2-04 and the output frequency at the time the Run command is
removed. It can be calculated by:
Momentary Power Loss
Minimum Baseblock
Time (L2-03)
b2-04×10
b2-04
1.2 b: Application
10%
Output frequency when
Stop command was entered
100%
(Maximum output
frequency)
Figure 1.5 DC Injection Braking Time Depending on Output Frequency
Note:If an overcurrent (oC) fault occurs during DC Injection Braking to Stop, increase the momentary power loss minimum baseblock time
(L2-03) until the fault no longer occurs.
Setting 3: Coast with Timer
the
When
Run command is removed, the drive will turn off its output and the motor will coast to stop. The drive will not start
if a Run command is input before the time t (C1-02) has expired. Cycle the Run command that was activated during time t
after t has expired to start the drive.
The wait time t is
Run command
Output
frequency
determined by the output frequency when the Run command is removed and by the active deceleration time.
ONONONOFFOFF
Drive output shut off
Run wait time t
Figure 1.6 Coast with Timer
Figure 1.7 Run Wait Time Depending on Output Frequency
b1-04: Reverse Operation Selection
n
Enables and disables Reverse operation. For some applications, reverse motor rotation is not appropriate and may cause
problems (e.g., air handling units, pumps, etc.).
Possible to operate the motor in both forward and reverse directions.
Setting 1: Reverse Disabled
Drive disregards a Reverse run command or a negative frequency reference.
b1-06: Digital Input Reading
n
Defines how the digital inputs are read. The inputs are acted upon every 1 ms or 2 ms depending upon the setting.
No.NameSetting RangeDefault
b1-06Digital Input Reading0, 11
Setting 0: Read once (1 ms scan)
The state
of a digital input is read once. If the state has changed, the input command is immediately processed. With this setting
the drive responds more quickly to digital inputs, but a noisy signal could cause erroneous operation.
Setting 1: Read twice (2 ms scan)
The state of a digital input is read twice. The input command is processed only if the state does not change during the double
reading. This reading process is slower than the “Read once” process, but it is more resistant to noisy signals.
b1-08: Run Command Selection in Programming Mode
n
As a safety precaution, the drive will not normally respond to a Run command input when the HOA keypad is being used to
adjust parameters in Programming Mode (Verify Menu, Setup Mode, Parameter Settings Mode, and Auto-Tuning Mode). If
required by the application, set b1-08 to allow the drive to run while in Programming Mode.
No.Parameter NameSetting RangeDefault
b1-08Run Command Selection in Programming Mode0 to 20
Setting 0: Run Command Is Not Accepted in Programming Mode
A Run command is not accepted while the HOA keypad is in Programming Mode.
Setting 1: Run Command Is Accepted in Programming Mode
A Run command is accepted in any HOA keypad mode.
Setting 2: Prohibit Entering Programming Mode during Run
It is not possible to enter the Programming Mode as long as the drive output is active. The Programming Mode cannot be
displayed during Run.
b1-11: Drive Delay Time Setting
n
If a time is set to b1-11, the drive will delay executing a Run command until the set time has expired. During Drive Delay
Time execution, the HOA keypad will display “WrUn”. Both Alarm and Run indicators will blink while the drive waits to
execute the Run command.
No.Parameter NameSetting RangeDefault
b1-11Drive Delay Time Setting0 to 600 s0
b1-14: Phase Order Selection
n
Sets the phase order for drive output terminals U/T1, V/T2, and W/T3.
Switching motor phases will reverse the direction of the motor.
No.Parameter NameSetting RangeDefault
b1-14Phase Order Selection0, 10
Setting 0: Standard
Setting 1: Switch Phase Order
The direction of the motor is reversed.
b1-17: Run Command at Power Up
n
Determines whether an external Run command that is active during power up will start the drive.
A new Run command must be issued after power up. Cycle the Run command to start the drive.
Note:For safety reasons, the drive is initially programmed not to accept a Run command at power up (b1-17 = 0). If a Run command is issued at
Setting 1: Allowed
power up, the RUN indicator LED will flash quickly.
The motor will start immediately after a power up if a Run command is already enabled.
WARNING! Sudden Movement Hazard. If b1-17 is set to 1 and an external Run command is active during power up, the motor will begin
rotating as soon as the power is switched on. Proper precautions must be taken to ensure that the area around the motor is safe prior to
powering up the drive. Failure to comply may cause serious injury.
b1-24: Commercial Power Operation Switching Selection
n
When the output frequency matches the power supply frequency (60 Hz), the PWM switching operation stops and switches
to operation with a direct commercial power supply connection.
Note:1. Switching can be enabled when an inductive motor is being driven in V/f or OLV control modes.
2. Current value may change when a switch is made.
3. Verify that the induction motor can be driven with the commercial power supply (e.g., the rated voltage and rated speed) prior to enabling
the commercial power switching selection.
No.Parameter NameSetting RangeDefault
b1-24Commercial Power Switching Selection0, 10
Setting 0: Disabled
A voltage will be output with PWM switching operation regardless of the output frequency.
Setting 1: Enabled
When the deviation between the output frequency and the power supply frequency is less than or equal to the commercial
power switching output frequency coincidence level (b1-26), the PWM switching operation stops and switches to operation
with a direct commercial power supply connection.
Operation with a direct commercial power supply continues until the deviation between the output frequency and the power
supply frequency is greater than or equal to the commercial power switching output frequency coincidence/non-coincidence
level (b1-25 + b1-26).
b1-25/b1-26: Commercial Power Supply Operation Cancellation Level/Switching Level
n
These parameters set the value in 0.1 Hz increments at which commercial power supply switching selection is enabled and
disabled.
Entering Eco Mode
When the deviation between the output frequency and the power supply frequency becomes equal to or less than the setting
values of b1-26, an output frequency coincidence condition exists. The drive will operate in commercial power switching
mode. If the drive will not switch to commercial power supply switching mode, set b1-26.
Exiting Eco Mode
When
the deviation between the output frequency and the power supply frequency becomes equal to or greater than the setting
value of b1-25 + b1-26, the drive will operate in PWM switching mode. If commercial power switching mode and PWM
switching mode are repeated frequently, increase the setting value of b1-25.
Note:The drive will not switch to commercial power switching mode when L3-06, Stall Prevention Level during Run, is exceeded and L3-05,
Stall Prevention Selection during Run, is enabled.
No.Parameter NameSetting RangeDefault
b1-25Commercial Power Supply Operation Cancellation Level0.4 to 6.0 Hz1.0 Hz
b1-26Commercial Power Supply Operation Switching Level0.0 to 3.0 Hz0.2 Hz
u
b2: DC Injection Braking
These parameters determine operation of the DC Injection Braking and Zero Speed Control features.
The function triggered by parameter b2-01 depends on the control mode that has been selected.
V/f and OLV/PM (A1-02 = 0, 5)
For these control modes, parameter b2-01 sets the starting frequency for DC Injection Braking at Stop. When the output
frequency falls below the setting of b2-01, DC Injection Braking is enabled for the time set in parameter b2-04.
DC Injection
Braking
Time
b2-04
Output
frequency
Figure 1.8 DC Injection Braking at Stop for V/f
b2-01
Note:If
b2-02: DC Injection Braking Current
n
to the E1-09 value.
is set to a smaller value than E1-09 (Minimum Output Frequency), then DC Injection Braking will begin when the frequency falls
E1-09 Min. Frequency
b2-01 Zero Speed Level
Sets the DC Injection Braking current as a percentage of the drive rated current.
No.NameSetting RangeDefault
b2-02DC Injection Braking Current0 to 100%50%
The level of DC Injection Braking current affects the strength of the magnetic field attempting to lock the motor shaft.
Increasing the
current level will increase the amount of heat generated by the motor windings. Do not set this parameter higher
than the level necessary to hold the motor shaft.
b2-03: DC Injection Braking Time at Start
n
Sets the time of DC Injection Braking at start. Used to stop a coasting motor before restarting it or to apply braking torque at
start. Disabled when set to 0.00 s.
No.NameSetting RangeDefault
b2-03DC Injection Braking Time at Start0.00 to 10.00 s0.00 s
Note:Before starting an uncontrolled rotating motor (e.g., a fan motor driven by windmill effect), use DC Injection or Speed Search to stop the
b2-04: DC Injection Braking Time at Stop
n
Sets
the
motor or detect motor speed before starting it. Otherwise, motor stalling and other faults can occur.
time of DC Injection Braking at stop. Used to completely stop a motor with high inertia load after ramp down. Increase
the value if the motor still coasts by inertia after it should have stopped. Disabled when set to 0.00 s.
No.NameSetting RangeDefault
b2-04DC Injection Braking Time at Stop0.00 to 10.00 s0.00 s
b2-09: Motor Pre-Heat Current 2
n
Determines the percentage of motor rated output current that will be used for the motor pre-heat function. This function can
be useful in applications where the motor sits for extended periods of time in humid conditions. Motor pre-heating can only
be initiated by closing a digital input programmed as a Motor Pre-Heat 2 (H1-oo = 50).
The Speed Search function allows the drive to detect the speed of a rotating motor shaft that is driven by external forces and
start the motor operation directly from the detected speed without first stopping the machine.
Example: When a momentary loss of power occurs, the drive output shuts off and the motor coasts. When power returns, the
drive can find the speed of the coasting motor and restart it directly.
Enabling Speed Search for PM motors only requires setting parameter b3-01 to 1. The drive offers current detection and speed
estimation Speed Search for induction motors. Parameter b3-24 selects the speed search method for induction motors. Both
methods and relevant parameters are explained below.
Speed Search start timing differs depending on whether operation is after a momentary power loss (L2-01 = 1 or 2) or after
the Speed Search at start (b3-01 = 1). The operation timing of the Speed Search after a momentary power loss is shown in
Figure 1.9. The operation timing after the Speed Search at start is shown in Figure 1.10.
After restoring power, the Speed Search operation remains in baseblock status for at least the time set in b3-05. However,
Speed Search will not start if the time set in L2-03, Minimum Baseblock Time, does not pass after the power stops. When
induced voltage remains in the motor, the Speed Search operation starts after the time set in b3-05 without waiting for the time
set in L2-03.
When performing a speed search operation at start, the speed search operation will start after waiting for the longer of the
times set
Search operation starts after the time set in b3-05 without waiting for the time set in L2-03.
n
Current Detection Speed Search 2 is for use with IM motors. The current set in b3-31 is applied and the speed is detected
based
Speed Search. If the output current during the Speed Search operation is larger than the setting value of b3-32, reduce the
frequency for the deceleration time set in b3-03. After motor speed estimation is completed, the speed is accelerated or
decelerated to the frequency reference.
Figure 1.9 Timing Chart for Speed Search after Recovery from Momentary Power Loss
in b3-05 and L2-03 after the Run command input is received. When induced voltage remains in the motor, the Speed
Figure 1.10 Timing Chart for Speed Search at Start
Current Detection Speed Search 2 (b3-24 = 2)
the current flow to the motor. The speed then accelerates or decelerates to the frequency reference after completing
Estimation Speed Search estimates the motor speed while the motor is coasting and then restarts operation. The speed
then accelerates or decelerates to the frequency reference after completing Speed Search.
This method can be used for a single induction motor connected to a drive. Do not use this method if the motor is one or more
frame size smaller than the drive, at motor speeds above 200 Hz, or when using a single drive to operate more than one motor.
Speed Search Activation
n
Speed Search can be activated using any of the methods 1 through 5 described below. Select the Speed Search type in parameter
b3-24 independent of the activation method.
Method 1. Automatically activate Speed Search with every Run command. Set b3-01, Speed Search Selection at Start, to 1
(Enabled). External Speed Search commands are ignored.
Method 2. Activate Speed Search using the digital input terminals.
Use the input functions for H1-oo in Table 1.7.
Table 1.7 Speed Search Activation by Digital Inputs
SettingDescriptionb3-24 = 1b3-24 = 2
61
62
External Search
Command 1
External Search
Command 2
Activate Speed Estimation
Speed Search
Closed: Activate Current Detection Speed Search from the
maximum output frequency (E1-04).
Closed: Activate Current Detection Speed Search from the
frequency reference.
To activate Speed Search by a digital input, the input must be set together with the Run command or the Run command must
be entered after giving the Speed Search command.
Method 3. After automatic fault restart.
When the number of maximum fault restarts in parameter L5-01 is set higher than 0, the drive will automatically perform
Speed Search as specified by b3-24 following a fault.
Method 4. After momentary power loss.
This mode
requires that the Power Loss Ride-Thru function is enabled during CPU operation (L2-01 = 1 or 2). Refer to L2-01:
Momentary Power Loss Operation Selection on page 109.
Method 5. After external baseblock is released.
The drive will resume the operation starting with Speed Search if the Run command is present and the output frequency is
above the minimum frequency when the Baseblock command (H1-oo = 8 or 9) is released.
Rotation Direction Detection Conditions for Backspin
n
Backspin occurs when the motor rotates in the opposite direction from the rotation direction command. Specify the speed
search direction when power is recovered after a momentary power loss in applications in which backspin can occur, such as
for an oil pump when backspin may occur due to the weight of the oil after a momentary power loss. The search starts from
the rotation direction specified in the direction command when the momentary power loss time is short. The search starts from
the opposite direction of the direction specified in the direction command when the momentary power loss time is long. The
rotation for the Speed Search is determined as follows:
[t] is the time from the momentary power loss to recovery.
• 0 ≤ t < b3-50: The search is started in the direction specified by the direction command.
• b3-50 ≥ t < b3-51: The motor is not restarted and the baseblock continues.
The search starts from the opposite direction of the direction command when the momentary power loss time exceeds the
setting value of b3-51.
• b3-51 ≤ t: The search is started in the direction opposite to the direction command.
Refer to b3-50/b3-51: Backspin Search Direction Judgment Time 1/2 on page 28 for details on the backspin direction
judgment time.
Note:1. Set b3-50 to the required time to enable rotation direction detection for backspin.
2. When setting b3-50, be sure to also set the following parameters to the values specified. Setting these parameters to any other values
will trigger an oPE08 fault.
b3-50 ≤ b3-51
b3-14 = 0
b3-24 = 2
3. Backspin detection is not necessary with a PM motor.
Determines if Speed Search is automatically performed when a Run command is issued.
No.Parameter NameSetting RangeDefault
b3-01Speed Search Selection at Start0, 1
Setting 0: Disabled
Determined by
A1-02
This setting starts operating the drive at the minimum output frequency when the Run command is entered. If external Speed
Search 1 or 2 is already enabled by a digital input, the drive will start operating with Speed Search.
Setting 1: Enabled
This setting performs Speed Search when the Run command is entered. The drive begins running the motor after Speed Search
is complete.
b3-03: Speed Search Deceleration Time
n
Sets the output frequency reduction ramp used by the Current Injection Method of Speed Estimation (b3-24 = 1). The time
entered into b3-03 will be the time to decelerate from maximum frequency (E1-04) to minimum frequency (E1-09).
No.NameSetting RangeDefault
b3-03Speed Search Deceleration Time0.1 to 10.0 s2.0 s
b3-04: V/f Gain during Speed Search (Speed Estimation Type)
n
During
Speed
Search, the output voltage calculated from the V/f pattern is multiplied with this value. Changing this value can
help reduce the output current during Speed Search.
No.NameSetting RangeDefault
b3-04V/f Gain during Speed Search10 to 100%
b3-05: Speed Search Delay Time
n
In
cases
where an output contactor is used between the drive and the motor, the contactor must be closed before Speed Search
Determined by
o2-04
can be performed. This parameter can be used to delay the Speed Search operation, giving the contactor enough time to close
completely.
No.NameSetting RangeDefault
b3-05Speed Search Delay Time0.0 to 100.0 s0.2 s
b3-06: Output Current 1 during Speed Search (Speed Estimation Type)
n
Sets
the
current injected to the motor at the beginning of Speed Estimation Speed Search as a factor of the motor rated current
set in E2-01. If the motor speed is relatively slow when the drive starts to perform Speed Search after a long period of baseblock,
it may be helpful to increase the setting value. The output current during Speed Search is automatically limited by the drive
rated current.
No.NameSetting RangeDefault
b3-06Output Current 1 during Speed Search0.0 to 2.0
Determined by
o2-04
Note:Use Current Detection Speed Search if Speed Estimation is not working correctly even after adjusting b3-06.
b3-07: Output Current 2 during Speed Search (Speed Estimation Type)
n
Sets
amount of output current during Speed Estimation Speed Search as a coefficient for the no-load current (output current
the
during Speed Search is automatically limited by the drive rated current).
Increase this setting value in increments of 0.1 if the drive fails to perform Speed Estimation.
No.NameSetting RangeDefault
b3-07Output Current 2 during Speed Search (Speed Estimation Type)0.0 to 5.01.0
b3-08: Current Control Gain during Speed Search (Speed Estimation Type)
n
Sets the proportional gain for the current controller during Speed Search.
No.NameSetting RangeDefault
b3-08Current Control Gain during Speed Search (Speed Estimation Type)0.00 to 6.00
b3-09: Current Control Integral Time during Speed Search (Speed Estimation Type)
n
Determined by
A1-02 and o2-04
Sets the Integral Time for the current controller during Speed Search.
No.NameSetting RangeDefault
b3-09
b3-10: Speed Search Detection Compensation Gain (Speed Estimation Type)
n
Current Control Integral Time during Speed Search (Speed
Estimation Type)
0.0 to 1000.0 ms
Determined by
A1-02
Sets the gain for the detected motor speed of the Speed Estimation Speed Search. Increase the setting only if an overvoltage
fault occurs when the drive restarts the motor.
No.NameSetting RangeDefault
b3-10Speed Search Detection Compensation Gain1.00 to 1.201.05
Within the type of the speed measurement, the search method can be switched automatically by the amount of remaining
voltage in the motor. This parameter sets the switching level. (200 V class at 100% = 200 V, and 400 V class at 100% = 400
V).
No.NameSetting RangeDefault
b3-11Speed Search Method Switching Level (Speed Estimation Type)0.5 to 100.0%5.0%
b3-12: Minimum Current Detection Level during Speed Search
n
Sets the minimum current detection level during Speed Search. Increase this setting value in increments of 0.1 if the drive
fails to perform Speed Estimation.
No.NameSetting RangeDefault
b3-12Minimum Current Detection Level during Speed Search2.0 to 10.0
Sets how the drive determines the motor rotation direction when performing Speed Estimation Speed Search.
No.Parameter NameSetting RangeDefault
b3-14Bi-Directional Speed Search Selection0, 11
Setting 0: Disabled
The drive uses the frequency reference to determine the direction of motor rotation to restart the motor.
Setting 1: Enabled
The drive detects the motor rotation direction to restart the motor.
b3-17: Speed Search Restart Current Level (Speed Estimation Type)
n
Sets the current level at which Speed Estimation is restarted as a percentage of drive rated current to avoid overcurrent and
overvoltage problems since a large current can flow into the drive if the difference between the estimated frequency and the
actual motor speed is too big when performing Speed Estimation.
No.NameSetting RangeDefault
b3-17Speed Search Restart Current Level0 to 200%150%
b3-18: Speed Search Restart Detection Time (Speed Estimation Type)
n
Sets the time for which the current must be above the level set in b3-17 before restarting Speed Search.
No.NameSetting RangeDefault
b3-18Speed Search Restart Detection Time0.00 to 1.00 s0.10 s
b3-19: Number of Speed Search Restarts (Speed Estimation Type)
n
Sets the number of times the drive should attempt to find the speed and restart the motor. If the number of restart attempts
exceeds the value set to b3-19, the SEr fault will occur and the drive will stop.
No.NameSetting RangeDefault
b3-19Number of Speed Search Restarts0 to 103
b3-24: Speed Search Method Selection
n
Sets the Speed Search method.
In V/f control mode, set this parameter to 2 (Current Detection Type Speed Search 2) when b3-50 is 0.1 or longer.
No.Parameter NameSetting RangeDefault
b3-24Speed Search Method Selection1, 2
Determined by
A1-02 and o2-04
Setting 1: Speed Estimation
Setting 2: Current Detection 2
Note:1. Enable or disable Speed Search at start with b3-01 and Speed Search after momentary power loss with L2-01.
2. Refer to Current Detection Speed Search 2 (b3-24 = 2) on page 23 and Refer to Speed Estimation Speed Search (b3-24 = 1) on page
24 for details on the Speed Search direction.
b3-25: Speed Search Wait Time
n
Sets the wait time between Speed Search restarts. Increase the wait time if problems occur with overcurrent, overvoltage, or
if an SEr fault occurs.
No.NameSetting RangeDefault
b3-25Speed Search Wait Time0.0 to 30.0 s0.5 s
b3-27: Start Speed Search Select
n
Selects a condition to activate Speed Search Selection at Start (b3-01) or External Speed Search Command 1 or 2 from the
multi-function input.
No.NameSetting RangeDefault
b3-27Start Speed Search Select0, 10
Setting 0: Triggered when a Run Command Is Issued (Normal)
Setting 1: Triggered when an External Baseblock Is Released
b3-29: Speed Search Induced Voltage Level
n
Lower
this value in small increments if changes are necessary. Setting this value too low will prevent the drive from performing
Speed Search. There is normally no need to change this parameter from the default value.
No.NameSetting RangeDefault
b3-29Speed Search Induced Voltage Level0 to 10%10%
b3-31: Speed Search Operation Current Level 1 (Current Detection Type 2)
n
Sets
the
current level used to limit the output current during Current Detection Type Speed Search 2 as a ratio to E2-03, Motor
The current level is determined for a no-load current that is 30% of the rated motor current when the setting value of E2-03
is less than or equal to 30% of the rated motor current.
Note:If the setting value is too large, a stopped inductive motor may accelerate too quickly. In such cases, set this parameter to a value that is
b3-32: Speed Search Operation Current Level 2 (Current Detection 2)
n
Sets
the
smaller than the rated motor current.
No.NameSetting RangeDefault
b3-31
Speed Search Operation Current Level 1 (Current Detection Type
2)
1.50 to 3.501.50
current level at which to end the Speed Search for Current Detection Type Speed Search 2 as a ratio to E2-03, Motor
No-Load Current.
The current level is determined for a no-load current that is 30% of the rated motor current when the setting value of E2-03
is less than or equal to 30% of the rated motor current.
No.NameSetting RangeDefault
b3-32Speed Search Operation Current Level 2 (Current Detection 2)0.00 to 1.491.20
b3-33: Speed Search Selection when Run Command is Given during Uv
n
Activates
and
deactivates Speed Search at start in accordance with whether a Run command was issued during an undervoltage
(Uv) condition. Function is active when a momentary power loss (L2-01 = 1 or 2), Speed Search at start (b3-01 = 1), and
coasting to a stop (b1-03 = 1) are enabled.
No.NameSetting RangeDefault
b3-33Speed Search Selection when Run Command is Given during Uv0, 10
Setting 0: Disabled
Setting 1: Enabled
b3-50/b3-51: Backspin Search Direction Judgment Time 1/2
n
The direction of the Speed Search is adjusted to allow for backspin.
When
momentary power loss time t is shorter than the time set in b3-50, the search operates according to the direction command.
When momentary power loss time t is equal to or longer than the time set in b3-51, the search operates from the opposite
direction of the direction command. When momentary power loss time t is equal to or longer than the time set in b3-50 and
shorter than b3-15, baseblock continues until momentary power loss time t exceeds the time set in b3-51. The search then
operates from the opposite direction of the direction command.
Note:1. Use these parameters only in applications in which backspin can occur
2. Be sure to set b3-50 > b3-51.
3. Backspin detection is not necessary with a PM motor.
No.NameSetting RangeDefault
b3-50Backspin Search Direction Judgment Time 10.0 to 10.0
b3-51Backspin Search Direction Judgment Time 20.0 to 10.00.0
Determined by
A1-02
Speed Search from the Direction Command (0.0 ≤ Momentary Power Loss Time t < b3-50)
When time t from the momentary power loss to recovery is shorter than the setting value of b3-50, Speed Search is performed
in the direction specified by the direction command. The deceleration time set in b3-52 is used for the search frequency and
the setting value of the frequency reference is used as the starting search frequency.
Figure 1.11 Speed Search from Forward Run Command (0 ≤ t < b3-50)
Continuous Baseblock (b3-50 ≤ t < b3-51)
When time t from the momentary power loss to recovery is between the times set for b3-50 and b3-51, operation will not be
the baseblock will continue. The drive will stay in baseblock for the time set in b3-51 even after restoring power.
restarted
and
After the time set in b3-51 passes, Speed Search starts in the opposite direction of the direction command. The deceleration
time in b3-53 is used for the search frequency and the setting value of the frequency reference is used as the starting search
frequency.
Speed Search in Direction Opposite to Direction Command (b3-51 ≤ t)
When time t from the momentary power loss to recovery exceeds the setting value of b3-51, Speed Search is performed in the
opposite direction of the direction command. The deceleration time in b3-53 is used for the search frequency and the setting
value of the frequency reference is used as the starting search frequency.
Figure 1.12 Continuous Baseblock (b3-50 ≤ t < b3-51)
Parameter Details
1
29
Motor speed
Output frequency
Power supply voltage
0
Normal operation
Search in progress
b3-50
b3-51
Forward operation
t
Momentary power loss time t
b3-53
1.2 b: Application
Figure 1.13 Speed Search in Direction Opposite to Direction Command (b3-51 ≤ t)
b3-52: Backspin Search Deceleration Time 1
n
Sets the search frequency deceleration rate when searching from the direction command when momentary power loss time t
is shorter than the time set in b3-50.
Set the value lower than the motor deceleration rate during coasting.
No.NameSetting RangeDefault
b3-52Backspin Search Deceleration Time 10.1 to 10.0 s2.0 s
b3-53: Backspin Search Deceleration Time 2
n
Sets the search frequency deceleration rate for a Speed Search from the opposite direction of the direction command when
momentary power loss time t is equal to or longer than the time set in b3-51.
No.NameSetting RangeDefault
b3-53Backspin Search Deceleration Time 20.1 to 10.0 s2.0 s
u
b4: Timer Function
The timer
function is independent of drive operation and can delay the switching of a digital output triggered by a digital input
signal and help eliminate chattering switch noise from sensors. An on-delay and off-delay can be set separately.
To enable the timer function, set a multi-function input to “Timer Function Input” (H1-oo = 18) and set a multi-function
output to “Timer output” (H2-oo = 12). Only one timer can be used.
b4-01, b4-02: Timer Function On-Delay, Off-Delay Time
n
b4-01 sets the on-delay time for switching the timer output. b4-02 sets the off-delay time for switching the timer output.
No.NameSetting RangeDefault
b4-01Timer Function On-Delay Time0.0 to 3000.0 s0.0 s
b4-02Timer Function Off-Delay Time0.0 to 3000.0 s0.0 s
Timer Function Operation
n
The
switches off when the timer function input is open for longer than the value set to b4-02. Figure 1.14 illustrates the timer
function operation:
30
function switches on when the timer function input closes for longer than the value set to b4-01. The timer function