Emerson Unidrive SPM - Page 118

Safety
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configuration
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parameters
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the motor
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Information
118 Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
Pr 0.20 sets the destination of analog input 2.
Software V01.07.00 and later, the default is th (8)
Software V01.06.02 and earlier, the default is VOLt (6)
In modes 2 & 3 a current loop loss trip is generated if the current falls
below 3mA.
In modes 2 & 4 the analog input level goes to 0.0% if the input current
falls below 4mA.
Pr 0.22 determines whether the reference is uni-polar or bi-polar as
follows:
Enter the required value of jog frequency/speed.
The frequency/speed limits affect the drive when jogging as follows:
Open-loop
If the preset reference has been selected (see Pr 0.05), the speed at
which the motor runs is determined by these parameters.
Closed-loop
If the speed feedback (Pr 3.02) exceeds this level in either direction, an
overspeed trip is produced. If this parameter is set to zero, the
overspeed threshold is automatically set to 120% x
SPEED_FREQ_MAX.
Open-loop
Refer to Pr 0.24 to Pr 0.26.
Closed-loop
Enter in Pr 0.27 the number of lines per revolution of the drive encoder.
Pr
value
Pr
string
Mode Comments
0 0-20 0 - 20mA
1 20-0 20 - 0mA
2 4-20.tr 4 - 20mA with trip on loss Trip if I < 3mA
3 20-4.tr 20 - 4mA with trip on loss Trip if I < 3mA
4 4-20 4 - 20mA with no trip on loss 0.0% if I ≤ 4mA
5 20-4 20 – 4mA with no trip on loss 100% if I ≤ 4mA
6 VOLt Voltage mode
0.20 {7.14} Analog input 2 destination
RW Uni DE PT US
Ú
Pr 0.00 to Pr 21.51
Ö
Pr 1.37
0.21 {7.15} Analog input 3 mode
RW Txt PT US
Ú
0 to 9
Ö
th (8)
Pr
value
Pr
string
Mode Comments
0 0-20 0 - 20mA
1 20-0 20 - 0mA
2 4-20.tr 4 - 20mA with trip on loss Trip if I < 3mA
3 20-4.tr 20 - 4mA with trip on loss Trip if I < 3mA
4 4-20 4 - 20mA with no trip on loss 0.0% if I ≤ 4mA
5 20-4 20 - 4mA with no trip on loss 100% if I ≤ 4mA
6 VOLt Voltage mode
7th.SC
Thermistor mode with short-
circuit detection
Th trip if R > 3K3
Th reset if R < 1K8
ThS trip if R < 50R
8th
Thermistor mode with no
short-circuit detection
Th trip if R > 3K3
Th reset if R < 1K8
9th.diSp
Thermistor mode with
display only and no trip
0.22 {1.10} Bipolar reference select
RW Bit US
Ú
OFF (0) or On (1)
Ö
OFF (0)
Pr 0.22 Function
0 Unipolar speed/frequency reference
1 Bipolar speed/frequency reference
0.23 {1.05} Jog reference
RW Uni US
OL
Ú
0 to 400.0 Hz
Ö
0.0
CL
Ú
0 to 4,000.0 rpm
Ö
Frequency-limit parameter Limit applies
Pr 0.01 Minimum reference clamp No
Pr 0.02 Maximum reference clamp Yes
0.24 {1.21} Preset reference 1
RW Bi US
Ú
±Speed_limit_max rpm
Ö
0.0
0.25 {1.22} Preset reference 2
RW Bi US
Ú
±Speed_limit_max rpm
Ö
0.0
0.26 {1.23} Preset reference 3
RW Bi US
OL
Ú
±Speed_freq_max Hz/rpm
Ö
0.0
0.26 {3.08} Overspeed threshold
RW Uni US
CL
Ú
0 to 40,000 rpm
Ö
0
0.27 {1.24} Preset reference 4
RW Bi US
OL
Ú
±Speed_freq_max Hz/rpm
Ö
0.0
0.27 {3.34} Drive encoder lines per revolution
RW Uni US
VT
Ú
0 to 50,000
Ö
1024
SV
ÚÖ
4096