Emerson unidrive sp User Manual page 259

Safety Product Mechanical
Information Information Installation
resultant torque demand is used. The speed will be limited to the final
speed demand.
The operating area is the same as that for the coiler and is shown below:
Torque
-5rpm
4: Speed control with torque feed-forward
The drive operates under speed control, but a torque value may be
added to the output of the speed controller. This can be used to improve
the regulation of systems where the speed loop gains need to be low for
stability.
11.21.5 Stop modes
6.01 Stop mode
RW Txt
COASt (0), rP (1), rP.dcl
OL (2), dcl (3), td.dcl (4),
diSAbLE (5)
VT
COASt (0), rP (1),
no.rP (2)
SV
Open-loop
Stopping is in two distinct phases: decelerating to stop, and stopped.
Unidrive SP User Guide
Issue Number: 13
Electrical Getting Basic
installation Started parameters
Area for accelerating
uncoiler: positive torque,
limited speed
Speed reference
Speed
Area for normal uncoiler
operation: negative torque,
limited to low speed in reverse
US
rP (1)
no.rP (2)
www.controltechniques.com
Running SMARTCARD
Optimization
the motor operation
Stopping
Phase 1
Mode
0: Coast Inverter
disabled
1: Ramp Ramp down
to zero
frequency
2: Ramp Ramp down
followed to zero
by DC frequency
injection
3: DC Low
injection frequency
with zero current
speed injection
detection with
detection of
low speed
before next
phase
4: Timed Inject DC at
DC level
injection specified by
braking Pr 6.06 for
stop time
specified by
Pr 6.07
5: Disable Inverter
disabled
Once modes 3 or 4 have begun the drive must go through the ready
state before being restarted either by stopping, tripping or being
disabled.
If this parameter is set to DiASbLE (5), the disable stopping mode is
used when the run command is removed. This mode will allow the drive
to be started immediately by re-applying the run command. However, if
the drive is disabled by removing the drive enable (i.e. via the Enable
SAFE TORQUE OFF input or Pr 6.15 Drive enable) then the drive
cannot be re-enabled for 1s.
Closed loop vector and Servo
Only one stopping phases exists and the ready state is entered as soon
as the single stopping action is complete.
Stopping Mode
0: Coast
1: Ramp
2: No ramp
The motor can be stopped with position orientation after stopping. This
mode is selected with the position controller mode parameter (Pr 13.10).
When this mode is selected Pr 6.01 has no effect.
6.06 Injection braking level
RW Uni
OL 0.0 to 150.0 %
Defines the current level used during DC injection braking as a
percentage of motor rated current as defined by Pr 5.07.
Onboard Advanced Technical
Diagnostics
PLC parameters Data
Phase 2
Drive cannot Delay in phase 2 allows
be re-enabled rotor flux to decay
for 1s
Wait for 1s with
inverter
enabled
Inject DC at
level specified
by Pr 6.06 for
time defined by
Pr 6.07
Inject DC at The drive automatically
level specified senses low speed and
by Pr 6.06 for therefore it adjusts the
time defined by injection time to suit the
Pr 6.07 application. If the injection
current level is too small
the drive will not sense
low speed (normally a
minimum of 50-60% is
required).
Allows the drive to be
immediately disabled and
then re-enabled again
immediately if required.
Action
Inhibits the inverter
Stop with ramp
Stop with no ramp
RA
UL Listing
Information
Comments
US
100.0
259