Rockwell powerflex 700h, Programming Manual

Page: 31 / 104

Programming and Parameters 2-17
D
Y
NA
MI
C C
O
NTR
O
L
Load Li
mits
149 [Current Lmt Gain]
Sets the responsiveness of the current
limit.
Default:
Min/Max:
Units:
10000
0/32767
1
147
148
150 [Drive OL Mode]
Selects drive response to increasing drive
temperature.
Default:
Options:
3
0
1
2
3
“Both-PWM 1st”
“Reserved”
“Reduce Clim”
“Reserved”
“Both-PWM 1st”
151 [PWM Frequency]
Sets the carrier frequency for the PWM
output. Drive derating may occur at higher
carrier frequencies.
Default:
Min/Max:
Units:
2 kHz
1/Based on Drive Rating
1 kHz
152 [Droop RPM @ FLA]
Selects amount of droop that the speed
reference is reduced when at full load
torque. Zero disables the droop function.
Important: Selecting “Slip Comp” with
param. 080 in conjunction with parameter
152, may produce undesirable results.
Default:
Min/Max:
Units:
0.0 RPM
0.0/200.0 RPM
0.1 RPM
St
op
/Brak
e Modes
145 [DB While Stopped]
Enables/disables dynamic brake
operation when drive is stopped. DB may
operate if input voltage becomes too
high.
Disabled = DB will not operate when the
drive is stopped.
Enabled = DB may operate whenever
drive is energized.
Note: Added for firmware version 3.001.
Default:
Options:
0
0
1
“Disabled”
“Disabled”
“Enabled”
155
156 [Stop/Brk Mode A]
[Stop/Brk Mode B]
Active stop mode. [Stop Mode A] is active
unless [Stop Mode B] is selected by
inputs.
(1)
When using options 1 or 2, refer to the
Attention statements at [DC Brake Level].
Default:
Default:
Options:
1
0
0
1
2
3
“Ramp”
“Coast”
“Coast”
“Ramp”
(1)
“Ramp to Hold”
(1)
“DC Brake”
157
158
159
157 [DC Brake Lvl Sel]
Selects the source for [DC Brake Level].
Default:
Options:
0
0
1
2
“DC Brake Lvl”
“DC Brake Lvl”
“Analog In 1”
“Analog In 2”
155
156
158
159
158 [DC Brake Level]
Defines the DC brake current level
injected into the motor when “DC Brake”
is selected as a stop mode.
The DC braking voltage used in this
function is created by a PWM algorithm
and may not generate the smooth holding
force needed for some applications.
Default:
Min/Max:
Units:
[Rated Amps]
0/[Rated Amps]
0.1 Amps
File Gr
oup
No.
Parameter Name & Description Values
Related
!
ATTENTION: If a hazard of injury due to movement of equipment
or material exists, an auxiliary mechanical braking device must be
used.
ATTENTION: This feature should not be used with synchronous
or permanent magnet motors. Motors may be demagnetized
during braking.