Digidrive SK Getting Started Guide
31
Issue Number: d
www.leroy-somer.com
Sa
fe
Rat
in
Me
ch
El
Ke
yp
P
Qu
ick S
D
O
P
UL L
0
: Fast ramp selected
1
: Standard ramp with normal motor voltage selected
2
: Standard ramp with high motor voltage selected
3
: Fast ramp with high motor voltage selected
Fast ramp is linear deceleration at programmed rate, normally used when a braking
resistor is fitted.
Standard ramp is controlled deceleration to prevent DC bus over-voltage trips, normally
used when there is no braking resistor fitted.
If a high motor voltage mode is selected, deceleration rates can be faster for a given
inertia but motor temperatures will be higher.
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
Digidrive SK Advanced User Guide
.
OFF
:Fixed linear voltage to frequency ratio (constant torque - standard load)
On
: Voltage to frequency ratio dependant on load current (dynamic/variable torque/
load). 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
Digidrive SK Advanced User Guide
.
Fr.hr
:High resolution frequency input. See
Digidrive SK Advanced User Guide
.
Figure 6-11
No
Function
Range
Defaults
Type
30
Ramp mode select
0 to 3
1
RW
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