36
Commander SK Getting Started Guide
www.controltechniques.com
Issue Number: 9
0
: Coast to stop selected
1
: Ramp to stop selected
2
: Ramp to stop with 1 second DC injection braking
3
: DC injection braking with detection of zero speed
4
: Timed DC injection braking
See the
Commander SK Advanced User Guide
.
OFF
:Fixed linear voltage to frequency ratio (constant torque - standard load)
On
: Voltage to frequency ratio dependant on load current. This gives a higher motor
efficiency.
0
: Disabled
1
: Detect positive and negative frequencies
2
: Detect positive frequencies only
3
: Detect negative frequencies only
If the drive is to be configured in fixed boost mode (Pr
41
= Fd or SrE) with catch a
spinning motor software enabled, an autotune (see Pr
out to measure the motor’s stator resistance beforehand. If a stator resistance is not
measured, the drive may trip on OV or OI.AC while trying to catch a spinning motor.
dig
: Digital input
th
:
Motor thermistor input, connect as per diagram below
Fr
:
Frequency input. See
Commander SK Advanced User Guide
.
Fr.hr
:High resolution frequency input. See
Commander SK Advanced User Guide
.
Figure 6-11
Trip resistance: 3k
Ω
Reset resistance: 1k8
No
Function
Range
Defaults
Type
31
Stop mode select
0 to 4
1
RW
No
Function
Range
Defaults
Type
32
Dynamic V to f select
OFF or On
OFF
RW
No
Function
Range
Defaults
Type
33
Catch a spinning motor select
0 to 3
0
RW
No
Function
Range
Defaults
Type
34
Terminal B7 mode select
dig, th, Fr, Fr.hr
dig
RW
0V
Motor thermistor
input
T1
B7
If Pr
34
is set to th so that terminal B7 is used as a motor thermistor, the functionality of
terminal B7 as set-up with Pr
05
, drive configuration, will be disabled.
When setting to th, press mode four times. Analog reference 2 will no longer be selected
as the speed reference. Analog reference 1 should be used.
NOTE
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