Actual signals and parameters
83
0…16000 Hz Minimum frequency
1802 FREQ INPUT MAX Defines the maximum input value when DI5 is used as a frequency input. 1000
0…16000 Hz Maximum frequency
1803 FILTER FREQ IN Defines the filter time constant for frequency input, i.e the time within 63% of
a step change is reached.
0.1
0.0…10.0 s Filter time constant
20 LIMITS
Drive operation limits
2003 MAX CURRENT Defines the allowed maximum motor current. 1.8 · I
2N
0.0…1.8 · I
2N
A Current
2005 OVERVOLT CTRL Activates or deactivates the overvoltage control of the intermediate DC link.
Fast braking of a high inertia load causes the voltage to rise to the
overvoltage control limit. To prevent the DC voltage from exceeding the limit,
the overvoltage controller automatically decreases the braking torque.
Note: If a brake chopper and resistor are connected to the drive, the
controller must be off (selection DISABLE) to allow chopper operation.
1 = ENABLE
0 = DISABLE Overvoltage control deactivated
1 = ENABLE Overvoltage control activated
2006 UNDERVOLT CTRL Activates or deactivates the undervoltage control of the intermediate DC link.
If the DC voltage drops due to input power cut off, the undervoltage controller
will automatically decrease the motor speed in order to keep the voltage
above the lower limit. By decreasing the motor speed, the inertia of the load
will cause regeneration back into the drive, keeping the DC link charged and
preventing an undervoltage trip until the motor coasts to stop. This will act as
a power-loss ride-through functionality in systems with a high inertia, such as
a centrifuge or a fan.
1 = ENABLE
(TIME)
0 = DISABLE Undervoltage control deactivated
1 = ENABLE(TIME) Undervoltage control activated. The undervoltage control is active for
500 ms.
2 = ENABLE Undervoltage control activated. No operation time limit.
2007 MINIMUM FREQ Defines the minimum limit for the drive output frequency. A positive (or zero)
minimum frequency value defines two ranges, one positive and one negative.
A negative minimum frequency value defines one speed range.
Note: MINIMUM FREQ value must not exceed MAXIMUM FREQ value.
0
-500.0…500.0 Hz Minimum frequency
2008 MAXIMUM FREQ Defines the maximum limit for the drive output frequency. Eur: 50 /
US: 60
0.0…500.0 Hz Maximum frequency. See parameter 2007 MINIMUM FREQ.
Parameters in the Long Parameter mode
Index Name/Selection Description Def
2007
2008
f
-(2007)
-(2008)
2008
2007
Allowed frequency range
Allowed frequency range
Allowed frequency range
t
f
t
2007 value is >
0
0
0
2007 value is < 0