Menu 5
Parameter
structure
Keypad and
display
Parameter x.00
Parameter
description format
Advanced parameter
descriptions
Serial comms
protocol
Electronic
nameplate
Performance
80 Digitax ST Advanced User Guide
www.controltechniques.com Issue Number: 1
The output frequency is not controlled directly, and so the output frequency displayed in this parameter is calculated by measuring the frequency of
the controller reference frame.
This is the modulus of the r.m.s. line to line voltage at the inverter output at the drive output frequency.
The output power is the dot product of the output voltage and current vectors. Positive power indicates power flowing from the drive to the motor
(motoring) and negative power indicates power flowing from the motor to the drive (regen).
Voltage across the internal DC bus of the drive.
The rated current should be set at the motor nameplate value for rated current. The value of this parameter is used for current limits and motor
thermal protection.
The Rated load rpm defines the rated speed of the motor and is only used in the motor thermal protection scheme (see Pr 4.16 on page 75.) and to
determine the speed used in the auto tuning inertia test (see Pr 5.12 on page 81).
5.01 Output frequency
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
101111
Range ±1250.0 Hz
Update rate 250μs write
5.02 Output voltage
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 1111
Range 0 to AC_VOLTAGE_MAX V
Update rate Background write
5.03 Output power
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
112111
Range ±POWER_MAX kW
Update rate Background write
5.05 DC bus voltage
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111111
Range 0 to +DC_VOLTAGE_MAX V
Update rate Background write
5.07 Motor rated current
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
12 1 111
Range 0 to RATED_CURRENT_MAX A
Default Maximum current (i.e. the value of Pr 11.32)
Second motor
parameter
Pr 21.07
Update rate Background read
5.08 Rated speed
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
2111
Range 0.00 to 40,000.00 rpm
Default 3,000.00
Second motor
parameter
Pr 21.08
Update rate Background read
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