VLT® 7000 Booster
Programming
110 High break-away torque
(HIGH START TORQ.)
Value:
0.0 (OFF) - 0.5 sec.
✭ OFF
Function:
In order to secure a high starting torque, the maximum
torque for max. 0.5 sec. is allowed. However,
the current is limited by the protection limit of the
frequency converter (inverter). 0 sec. corresponds
to no high break-away torque.
Description of choice:
Set the necessary time in which a high starting
torque is desired.
111 Start delay
(START DELAY)
Value:
0.0 - 120.0 sec.
✭ 0.0 sec.
Function:
This parameter enables a delay of the starting time
after the conditions for start have been fulfilled.
When the time has passed, the output frequency
will start by ramping up to the reference.
Description of choice:
Set the desired time until acceleration is to begin.
112 Motor preheater
(MOTOR PREHEAT)
Value:
✭Disable (DISABLE)
[0]
Enable (ENABLE)
[1]
Function:
The motor preheater ensures that no condensate
develops in the motor at stop. This function can also
be used to evaporate condensed water in the motor.
The motor preheater is only active during stop.
Description of choice:
Select Disable [0] if this function is not required. Select
Enable [1] to activate motor preheating. The DC current
is set in parameter 113 Motor preheater DC current.
113 Motor preheater DC current
(PREHEAT DC-CURR.)
Value:
0 - 100 %
✭ 50 %
The maximum value depends on the rated motor
current, parameter 105 Motor current, I
M,N
.
Function:
The motor can be preheated at stop by means of a DC
current to prevent moisture from entering the motor.
Description of choice:
The motor can be preheated by means of a DC
current. At 0%, the function is inactive; at a value
higher than 0%, a DC current will be supplied to
the motor at stop (0 Hz). This function can also
be used to generate a holding torque.
If too high a DC current is supplied for too
long, the motor can be damaged.
✭ = factory setting. () = display text [] = value for use in communication via serial communication port
MG.70.A1.02 - VLT is a registered Danfoss trademark
59
To Next Page
Loading...
General