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Affinity User Guide 109
Issue Number: 5 www.controltechniques.com
6.2.8 Current demand filter
RFC
A first order filter, with a time constant defined by Pr 0.17, is provided on
the current demand to reduce acoustic noise and vibration produced as
a result of position feedback quantization noise. The filter introduces a
lag in the speed loop, and so the speed loop gains may need to be
reduced to maintain stability as the filter time constant is increased.
6.2.9 Spin start boost
If Pr 0.33 is set to a non zero value, then Pr 0.18 defines a scaling
function used by the algorithm that detects the speed of the motor. It is
likely that for smaller motors the default value of 1.0 is suitable, but for
larger motors this parameter may need to be increased. If the value of
Pr 0.18 is too large then the motor may accelerate from standstill when
the drive is enabled. If the value of Pr 0.18 is too small then the drive will
detect the motor speed as zero even if the motor is spinning.
6.2.10 Analog input
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 0.20 sets the destination of analog input 2.
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.
6.2.11 Real time clock
The value of Pr 0.24 determines the data displayed in Pr 0.22 and
Pr 0.23 as shown in the table below:
Pr 0.22 shows the date in the format ddmmyy (Pr 0.25 = 0 or 1) or
mmddyy (Pr 0.25 = 2 or 3). Pr 0.23 shows the time in hh.mm format.
If Pr 0.24 is set to 0 or 4 then the date and time start from zero, the days
roll over after 30, and the months roll over after 11.
0.17 {4.12} Current demand filter time constant
RW Uni US
RFC
Ú
0.0 to 25.0 ms
Ö
0.0
0.18 {5.40} Spin start boost
RW Uni US
Ú
0.0 to 10.0
Ö
1.0
0.19 {7.11} Analog input 2 mode
RW Txt US
Ú
0 to 6
Ö
4-20 (4)
Pr
value
Pr
string
Mode Comments
00-20 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
VoLt (6)
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
9 th.diSp
Thermistor mode with
display only and no trip
0.22 {6.16} Date
RW Uni NC PT US
Ú
0 to 311299
Ö
0.23 {6.17} Time
RW Uni NC PT US
Ú
0.00 to 23.59
Ö
0.24 {6.19} Date / time selector
RW Uni US
Ú
0 to 5
Ö
3
0.25 {6.20} Date format
RW Txt US
Ú
Std (0), Std.ds (1), US (2),
US.ds (3)
Ö
EUR> Std (0)
USA> US (2)
Pr 0.24 Data displayed in Pr 0.22 and Pr 0.23
0
Drive powered-up time: Date and time starts from zero at
each power-up
1
Date and time from real time clock in slot 1 Solutions Module.
If the module does not support this feature or no module is
installed in slot 1, then the date and time will be zero
2
Date and time from real time clock in slot 2 Solutions Module.
If the module does not support this feature or no module is
installed in slot 2, then the date and time will be zero
3 Date and time from internal real time clock
4
Drive running time: Time that the drive inverter has been
active since it was manufactured
5
Set date and time: Date and time can be adjusted and written
to all Solutions Modules installed which support real time
clock
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