119 High start torque
(High start torq.)
Value:
0.0 - 0.5 sec.
0.0 sec.
Function:
To ensure a high start torque approx. 1.8 x I
INV.
can be
permitted for max. 0.5 sec. The current is, however,
limited by the frequency converter's (inverter's) safety
limit. 0 sec. corresponds to no high start torque.
Description of choice:
Set the necessary time for which a high start torque is
required.
120 Start delay
(START DELAY)
Value:
0.0 - 10.0 sec.
0.0 sec.
Function:
This parameter enables a delay of the start-up 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 necessary time before commencing to accel-
erate.
121 Start function
(START FUNCTION)
Value:
DC hold during start delay time
(DC HOLD/DELAY TIME) [0]
DC brake during start delay time
(DC BRAKE/DELAY TIME) [1]
Coasting during start delay time
(COAST/DELAY TIME) [2]
Start frequency/voltage clockwise
(CLOCKWISE OPERATION) [3]
Start frequency/voltage in reference direction
(VERTICAL OPERATION) [4]
Function:
This is where to choose the required mode during the
start delay time (parameter 120 Start delay time).
Description of choice:
Select DC hold during start delay time [0] to energize
the motor with a DC hold voltage during the start delay
time. Set voltage in parameter 137 DC hold voltage.
Choose DC brake during start delay time [1] to energize
the motor with a DC brake voltage during the start de-
lay time. Set voltage in parameter 132 DC brake volt-
age.
Choose Coasting during start delay time [2] and the
motor will not be controlled by the frequency converter
during the start delay time (inverter turned off).
Choose Start frequency/voltage clockwise [3] to obtain
the function described in parameter 130 Start frequen-
cy and 131 Voltage at start during start delay time.
Regardless of the value assumed by the reference
signal, the output frequency equals the setting in pa-
rameter 130 Start frequency and the output voltage will
correspond to the setting in parameter 131 Voltage at
start .
This functionality is typically used in hoist applications.
It is used in particular in applications in which a cone
anchor motor is applied, where the direction of rotation
is to start clockwise followed by the reference direc-
tion.
Select Start frequency/voltage in reference direction [4]
to obtain the function described in parameter 130 Start
frequency and 131 Voltage at start during the start de-
lay time.
The direction of rotation of the motor will always follow
in the reference direction. If the reference signal
equals zero, the output frequency will equal 0 Hz, while
the output voltage will correspond to the setting in pa-
rameter 131 Voltage at start. If the reference signal is
different from zero, the output frequency will equal pa-
rameter 130 Start frequency and the output voltage will
equal parameter 131 Voltage at start. This functionality
is used typically for hoist applications with counter-
weight. It is used in particular for applications in which
a cone anchor motor is applied. The cone anchor mo-
tor can break away using parameter 130 Start frequen-
cy and parameter 131 Voltage at start.
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
22 MG.27.A2.02 - VLT
®
is a registered Danfoss trademark
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