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SIEPCYEUOQ2V01A Q2V Technical Manual
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b2: DC INJ / SHORT CKT BRAKE
b2 parameters
set the DC Injection Braking and Short Circuit Braking functions.
•
DC Injection Braking: A braking method that injects DC current into the motor windings. This function should
not be used too frequently, because it generates a fair amount of heat in the motor.
•
Short Circuit Braking: A braking method for PM motors.
■
b2-01: ZSpd/DCI Threshold
No.
(Hex.)
Name
Description
Default
(Range)
b2-01
(0189)
ZSpd/DCI Threshold
Sets the frequency to start DC Injection Braking or Short Circuit Braking.
Determined by A1-02
(0.0 - 10.0 Hz)
Note:
This parameter is available when
b1-03 = 0 [Stopping Method Selection = Ramp->Stop]
.
When the control method selected in
A1-02 [Control Method]
changes, the
b2-01
function changes.
Parameter Settings
Functions of
b2-01
A1-02 = 0, 2 [V/f Control or OLVector]
Parameter
b2-01
sets the frequency to start DC Injection Braking at stop. When the output frequency is less than or
equal to the value set in
b2-01
, the drive will inject the quantity of DC current set in
b2-02 [DCI Braking Current]
into
the motor for the time set in
b2-04 [DC Inject Braking Time at Stop]
.
Figure 12.19 DC Injection Braking at Stop
Note:
When
b2-01 ≤ E1-09 [Min Output Frequency]
, the drive will start DC Injection Braking from the frequency set in
E1-09
.
A1-02 = 5, 6, or 8 [PM OLVector, PM AOLVector, or EZ
Vector]
Parameter
b2-01
sets the frequency to start for Short Circuit Braking at stop. When the output frequency is less than or
equal to the value set in
b2-01
, the drive will do Short Circuit Braking for the time set in
b2-13 [SCB Time@Stop]
.
When
b2-04 > 0.00 s
, the drive will complete Short Circuit Braking, then do DC Injection Braking for the time set in
b2-04
.
Figure 12.20 Short Circuit Braking at Stop
Note:
When
b2-01 ≤ E1-09
, the drive will start Short Circuit Braking from the frequency set in
E1-09
. If
b2-01 and E1-
09 = 0 Hz
, the drive will not do Short Circuit Braking.
■
b2-02: DCI Braking Current
No.
(Hex.)
Name
Description
Default
(Range)
b2-02
(018A)
DCI Braking Current
Sets the DC Injection Braking current as a percentage of the drive rated current.
50%
(0 - 75%)
When the DC Injection Braking current is more than 50%, the drive decreases the carrier frequency to 1 kHz. The
motor rated current determines how much DC Injection Braking current that the drive can use.
V/f
OLV
OLV/PM
OLV/PM AOLV/PM
EZOLV
V/f
OLV
OLV/PM
OLV/PM AOLV/PM
EZOLV
Summary of Contents for Q2V Series
Page 2: ...This Page Intentionally Blank 2 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 12: ...12 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 18: ...i 2 Legal Information 18 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 26: ...1 2 Features and Advantages of Control Methods 26 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 38: ...2 8 Installation Methods 38 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 70: ...3 3 Main Circuit Wiring 70 SIEPCYEUOQ2V01A Q2V Technical Manual Models B006 B012...
Page 102: ...3 17 Motor Application Precautions 102 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 138: ...4 12 Test Run Checklist 138 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 144: ...5 2 European Standards 144 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 145: ...Standards Compliance 5 5 2 European Standards SIEPCYEUOQ2V01A Q2V Technical Manual 145...
Page 146: ...5 2 European Standards 146 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 266: ...7 10 Troubleshooting Without Fault Display 266 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 284: ...8 6 Storage Guidelines 284 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 312: ...10 10 Peripheral Devices and Options 312 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 430: ...11 21 Parameters Changed by PM Motor Code Selection 430 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 731: ...SIEPCYEUOQ2V01A Q2V Technical Manual 731 Z Z pulse Auto Tuning 125...