59
Application Functions
Parameters 400 through 427
Special functions of the drive are set up in this parameter group. This
includes the proportional, integral,derivitative controller (PID) and
setting the sleep mode function.
Additionally, this parameter group includes:
-
Reset function
-
Flying start
-
Interference reduction
-
Loss of load
-
Carrier frequency
-
Selection of process units
400
Reset Function
(RESET FUNCTION)
Value:
Manual reset (MANUAL RESET)
[0]
Automatic reset x 1 (AUTOMATIC X 1)
[1]
Automatic reset x 2 (AUTOMATIC X 2)
[2]
Automatic reset x 3 (AUTOMATIC X 3)
[3]
Automatic reset x 4 (AUTOMATIC X 4)
[4]
Automatic reset x 5 (AUTOMATIC X 5)
[5]
Automatic reset x 10 (AUTOMATIC X 10)
[6]
Automatic reset x 15 (AUTOMATIC X 15)
[7]
Automatic reset x 20 (AUTOMATIC X 20)
[8]
★
Infinite automatic reset (INFINITE AUTOMATIC) [9]
Function:
This parameter allows a choice of manual or automatic reset after a fault
trip. There is also a choice of the number of times the unit will attempt to
restart. The time between each attempt is set in parameter 401,
Automatic Restart Time.
Description of choice:
If Manual Reset is selected, the Reset key must be pressed or a digital
input given to reset the drive.
If auto reset after a fault trip is desired, select one of the Automatic reset
choices.
DANGER
!
If any automatic reset choices are selected,
motor can start without warning.
401
Automatic Restart Time
(AUTORESTART TIME)
Value:
0 to 600 seconds
★
10 sec.
Function:
This parameter sets the automatic reset time delay until each reset is
attempted. One of the automatic resets must be selected in parameter
400, Reset Function.
Description of choice:
Set the desired time before each restart attempt.
CAUTION
!
When parameter 402,
Flying Start, is enabled,
motor may turn forward and reverse a few
revolutions even with motor stopped. In highly
dynamic pumping processes, it is recommended
to disable
Flying Start function.
402
Flying Start
(FLYING START)
Value:
★
Disable (DISABLE)
[0]
Enable (ENABLE)
[1]
DC brake and start (DC BRAKE AND START)
[3]
Function:
This function makes it possible for the drive to ‘catch’ a rotating motor
when the drive is started. The drive will sense the speed of rotation and
direction of rotation of the motor and synchronize with it.
This function is active whenever a start command is present.
For the drive to catch the spinning motor, the motor speed must be
lower than the maximum frequency set in parameter 202.
Description of choice:
Select Disable if this function is not required.
Select Enable if the drive is to ‘catch’ and control a rotating motor.
Select DC brake and start if the drive is to brake the motor by means of
the DC brake first, and then start. Ensure that parameters 114 through
116, DC Braking, are set appropriately. Select DC brake and start if the
motor may be externally driven at a significant speed in the reverse
direction.
NOTE
For fan applications, factory setting for
Flying
Start is Enable. For pump applications, factory
setting for
Flying Start is Disable.
Sleep Mode
Sleep mode makes it possible to stop the drive when the system
demand drops below a preset level. When the demand increases to a
higher preset level, the drive will restart. A significant amount of energy
can be saved using sleep mode. Unlike a set-back time clock, the drive
is always available to run when the demand reaches the preset “wake
up” level. Sleep mode is not active if Local Reference is selected in
parameter 203, Reference Handling, or if the Jog function activates via
digital inputs. Sleep mode operates in both Open Loop and Closed
Loop.
✭
Indicates default parameter. Depending upon the application, the drive may be delivered with other parameters selected.
