VLT
®
4000 VT
■
Load and motor 100-117
This parameter group allows the configuration of
regulation parameters and the choice of torque
characteristics to which the VLT AFD is to be adapted.
The motor nameplate data must be set and automatic
motor adaptation can be carried out. In addition,
DC brake parameters can be set and the motor
thermal protection can be activated.
■
Configuration
The selection of configuration and torque characteristics
influences the parameters that can be seen in the
display. If
Open loop
[0] is selected, all parameters
relating to PID regulation will be hidden.
Consequently, the user is only able to see
the parameters that are of significance for
a given application.
100 Configuration
(CONFIG. MODE)
Value:
✭
Open loop (OPEN LOOP)
[0]
Closed loop (CLOSED LOOP)
[1]
Function:
This parameter is used for selecting the configuration
to which the AFD is to be adapted.
Description of choice:
If
Open loop
[0] is selected, normal speed control is
obtained (without feedback signal), i.e. if the reference
is changed, the motor speed will change.
If
Closed loop
[1] is selected, the internal process
regulator is activated to enable accurate regulation
in relation to a given process signal.
The reference (setpoint) and the process signal
(feedback) can be set to a process unit as
programmed in parameter 415
Process units
. See
Feedback handling
.
101 Torque characteristics
((VT CHARACT)
Value:
✭
Automatic Energy Optimization (AEO FUNCTION)
[0]
Parallel motors (MULTIPLE MOTORS)
[1]
Function:
This parameter allows a choice of whether the VLT
AFD has one or several motors connected to it.
Description of choice:
If
Automatic Energy Optimization
[0] has been selected,
only one motor may be connected to the VLT AFD.
The AEO function ensures that the motor obtains its
maximum efficiency and minimizes motor interference.
Select
Parallel motors
[1] if more than one motor is
connected to the output in parallel. See the description
un-der parameter 108
Start voltage of parallel motors
regarding the setting of parallel motor start voltages.
NOTE
It is important that the values set in parameters
102-106
Nameplate data
correspond to the
nameplate data of the motor with respect to
either star coupling Y or delta coupling
.
102 Motor power, P
M,N
M,N
(MOTOR POWER)
Value:
0.25 HP (0.25 KW)
[25]
0.5 HP (0.37 KW)
[37]
0.75 HP (0.55 KW)
[55]
1 HP (0.75 KW)
[75]
1.5 HP (1.10 KW)
[110]
2 HP (1.50 KW)
[150]
3 HP (2.20 KW)
[220]
MG.40.A7.22 - VLT is a registered Danfoss trademark
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