Emerson unidrive sp User Manual page 113

Safety Product Mechanical
Information Information Installation
0.05 {1.14} Reference selector
RW Txt
0 to 5
Use Pr 0.05 to select the required frequency/speed reference as follows:
Setting
Analog input 1 OR analog input 2 selectable by digital
A1.A2 0
input, terminal 28
Analog input 1 OR preset frequency/speed selectable
A1.Pr 1
by digital input, terminal 28 and 29
Analog input 2 OR preset frequency/speed selectable
A2.Pr 2
by digital input, terminal 28 and 29
Pr 3 Pre-set frequency/speed
PAd 4 Keypad reference
Prc 5 Precision reference
Setting Pr 0.05 to 1, 2 or 3 will re-configure T28 and T29. Refer to
Pr 8.39 (Pr 0.16 in OL) to disable this function.
0.06 {4.07} Current Limit
RW Uni
0 to Current_limit_max %
Pr 0.06 limits the maximum output current of the drive (and hence
maximum motor torque) to protect the drive and motor from overload.
Set Pr 0.06 at the required maximum torque as a percentage of the rated
torque of the motor, as follows:
T
R
[ ] ------------------- - ×
0.06 = 100
T
RATED
Where:
T Required maximum torque
R
T Motor rated torque
RATED
Alternatively, set 0.06 at the required maximum active (torque-
producing) current as a percentage of the rated active current of the
motor, as follows:
I
R
[ ] ------------------ - ×
0.06 = 100
I
RATED
Where:
I Required maximum active current
R
I Motor rated active current
RATED
6.2.4 Voltage boost, (open-loop), Speed-loop PID
gains (closed-loop)
0.07 {5.14} Voltage mode selector
RW Txt
Ur_S (0), Ur (1), Fd (2),
OL Ur_Auto (3), Ur_I (4),
SrE (5)
Open-loop
There are six voltage modes available, which fall into two categories,
vector control and fixed boost. For further details, refer to section Pr
0.07 {5.14} Voltage mode on page 138.
Unidrive SP User Guide
Issue Number: 13
Electrical Getting Basic
installation Started parameters
NC US
A1.A2 (0)
RA US
OL 165.0
CL 175.0
(%)
(%)
US
Ur_I (4)
www.controltechniques.com
Running SMARTCARD
Optimization
the motor operation
0.07 {3.10} Speed controller proportional gain
RW Uni
0.0000 to 6.5535
CL
1/rad s
Software V01.10.00 and later, the defaults are as above.
Software V01.09.01 and earlier, the default is 0.0100 in Closed-loop
vector and servo mode.
Closed-loop
Pr 0.07 (3.10) operates in the feed-forward path of the speed-control
loop in the drive. See Figure 11-4 on page 176 for a schematic of the
speed controller. For information on setting up the speed controller
gains, refer to Chapter 8 Optimization on page 137.
0.08 {5.15} Low frequency voltage boost
RW Uni
0.0 to 25.0% of motor
OL
rated voltage
Open-loop
When 0.07 Voltage mode selector is set at Fd or SrE, set Pr 0.08 (5.15)
at the required value for the motor to run reliably at low speeds.
Excessive values of Pr 0.08 can cause the motor to be overheated.
0.08 {3.11} Speed controller integral gain
RW Uni
0.00 to 655.35
CL
Software V01.10.00 and later, the defaults are as above.
Software V01.09.01 and earlier, the default is 1.00 in Closed-loop vector
and servo modes.
Closed-loop
Pr 0.08 (3.11) operates in the feed-forward path of the speed-control
loop in the drive. See Figure 11-4 on page 176 for a schematic of the
speed controller. For information on setting up the speed controller
gains, refer to Chapter 8 Optimization on page 137.
0.09 {5.13} Dynamic V/F / flux optimize select
RW Bit
OL OFF (0) or On (1)
Open-loop
Set Pr 0.09 (5.13) at 0 when the V/f characteristic applied to the motor is
to be fixed. It is then based on the rated voltage and frequency of the
motor.
Set Pr 0.09 at 1 when reduced power dissipation is required in the motor
when it is lightly loaded. The V/f characteristic is then variable resulting
in the motor voltage being proportionally reduced for lower motor
currents. Figure 6-2 shows the change in V/f slope when the motor
current is reduced.
Onboard Advanced Technical
PLC parameters Data
VT
-1
SV
Size 1 to 3: 3.0
Size 4 & 5: 2.0, Size 6: 1.0
VT
1/rad
SV
UL Listing
Diagnostics
Information
US
0.0300
0.0100
US
US
0.10
1.00
US
OFF (0)
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