514
SIEPCYEUOQ2V01A Q2V Technical Manual
◆
d2: REFERENCE LIMITS
d2 parameters
set the upper and lower frequency limits to control the motor speed. Apply these parameters to for
example, run the motor at low-speed due to mechanical strength concerns, or if the motor should not be run at low
speed because of lubrication issues with the gears and bearings.
The upper frequency limit is set in
d2-01 [FRef Upper Limit]
and the lower limit is set in
d2-02 [FRef Lower
Limit]
.
Figure 12.50 Upper and Lower Frequency Limits
■
d2-01: FRef Upper Limit
No.
(Hex.)
Name
Description
Default
(Range)
d2-01
(0289)
FRef Upper Limit
Sets maximum limit for all frequency references. The maximum output frequency is 100%.
100.0%
(0.0 - 110.0%)
When the frequency reference is more than the value set in
d2-01
the drive will continue to operate at the value set
in
d2-01
.
■
d2-02: FRef Lower Limit
No.
(Hex.)
Name
Description
Default
(Range)
d2-02
(028A)
FRef Lower Limit
Sets minimum limit for all frequency references. The maximum output frequency is 100%.
0.0%
(0.0 - 110.0%)
When the frequency reference is less than the value set in
d2-02
, the drive will continue to operate at the value set
in
d2-02
. The motor will accelerate to the
d2-02
value after the drive receives a Run command and a lower
frequency reference than
d2-02
has been entered.
■
d2-03: Analog FRef Lower Limit
No.
(Hex.)
Name
Description
Default
(Range)
d2-03
(0293)
Analog FRef Lower Limit
Sets the lower limit for the master frequency reference (the first frequency of the multi-step speed
reference) as a percentage. The maximum output frequency is 100%.
0.0%
(0.0 - 110.0%)
This parameter does not change the lower limit of Jog reference, frequency reference for multi-step speed
operation, or the auxiliary frequency reference.
The drive operates at the value set in
d2-03
when the frequency reference decreases to less than the value set in
d2-03
.
Note:
When lower limits are set to parameters
d2-02 [FRef Lower Limit]
and
d2-03
, the drive uses the larger value as the lower limit.
◆
d3: JUMP FREQUENCY
The Jump frequency is a function that sets the dead band to a specified frequency band. If a machine that operated
at constant speed is operated with variable speed, it can make resonance. To operate the machine without
resonance from the natural frequency of the machinery mechanical system, use a frequency band jump.
You can program the drive to have three different Jump frequencies. Set
d3-01 to d3-03 [Jump Frequency 1 to
Jump Frequency 3]
to the median value for the jumped frequency and set
d3-04 [Jump Frequency Width]
to the
Jump frequency width.
When you input a frequency reference that is the same as or near the Jump frequency width, the frequency
reference changes automatically.
V/f
OLV
OLV/PM
OLV/PM AOLV/PM
EZOLV
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...