Toshiba TOSVERT VF-nC3 Instruction Manual page 226

Common specification
Item
Control system
Rated output voltage
Output frequency range
Minimum setting steps of
frequency
Frequency accuracy
Voltage/frequency
characteristics
Frequency setting signal
Terminal board base
frequency
Frequency jump
Upper- and lower-limit
frequencies
PWM carrier frequency
PID control
Acceleration/deceleration
time
DC braking
Dynamic Breaking Drive
Circuit
Input terminal function
(programmable)
Output terminal functions
(programmable)
Forward/reverse run
Jog run
Preset speed operation
Retry operation
Various prohibition settings
/ Password setting
Regenerative power ride-
through control
Auto-restart operation
12
Failure detection signal
<Continued overleaf>
Note 1: Be careful, if 4-20 mA is selected, when the inverter's power is ON, the internal impedance is 250 Ω, but when the
power is OFF, the internal impedance increases very much to approximately 40 kΩ.
Sinusoidal PWM control
Adjustable within the range of 50 to 330V by correcting the supply voltage (However, cannot output voltage
exceeding the input voltage.)
0.1 to 400.0Hz, default setting: 0.5 to 80Hz, maximum frequency: 30 to 400Hz
0.1Hz: analog input (when the max. frequency is 100Hz), 0.01Hz: Operation panel setting and communication
setting.
Digital setting: within ±0.1% of the max. frequency (-10 to +60°C)
Analog setting: within ±1.0% of the max. frequency (25°C ±10°C)
V/f constant, variable torque, automatic torque boost, vector control, automatic energy-saving. Auto-tuning. Base
frequency (20 - 400Hz) adjusting to 1 or 2, torque boost (0 - 30%) adjusting to 1 or 2, adjusting frequency at start
(0.1 - 10Hz)
Setting dial on the front panel, external frequency potentiometer (connectable to a potentiometer with a rated
impedance of 1 - 10kΩ), 0 - 10Vdc / 0 - 5Vdc (input impedance: VI=40kΩ), 4 - 20mAdc (Input impedance: 250Ω).
The characteristic can be set arbitrarily by two-point setting. Possible to set: analog input (VI).
Setting of the jump frequency and the range.
Upper-limit frequency: 0 to max. frequency, lower-limit frequency: 0 to upper-limit frequency
Adjustable range of 2 to 16Hz (default: 12kHz).
Setting of proportional gain, integral gain, differential gain and control wait time. Checking whether the amount of
processing amount and the amount of feedback agree.
Selectable from among acceleration/deceleration times 1 and 2 (0.0 to 3000 sec.). Automatic
acceleration/deceleration function. S-pattern acceleration/deceleration 1 and 2. Control of forced rapid deceleration.
Braking start-up frequency: 0 to maximum frequency, braking rate: 0 to 100%, braking time: 0 to 20 seconds,
emergency DC braking.
None (braking module is optional)
Possible to select from among about 60 functions, such as forward/reverse run signal input, jog run signal input,
operation base signal input and reset signal input, to assign to 5 input terminals. Logic selectable between sink and
source.
Possible to select from among about 40 functions, such as upper/lower limit frequency signal output, low speed
detection signal output, specified speed reach signal output and failure signal output, to assign to FL relay output,
open collector output terminals.
The RUN and STOP keys on the operation panel are used to start and stop operation, respectively.
Forward/reverse run possible through communication and contact inputs from the terminal block.
Jog mode, if selected, allows jog operation from the terminal board.
Base frequency + 15-speed operation possible by changing the combination of 4 contacts on the terminal board.
Capable of restarting automatically after a check of the main circuit elements in case the protective function is
activated. 10 times (Max.) (selectable with a parameter)
Possible to write-protect parameters and to prohibit the change of panel frequency settings and the use of operation
panel for operation, emergency stop or resetting. Possible to write-protect parameters by setting 4 digits password.
Possible to keep the motor running using its regenerative energy in case of a momentary power failure (default:
OFF).
In the event of a momentary power failure, the inverter reads the rotational speed of the coasting motor and outputs
a frequency appropriate to the rotational speed in order to restart the motor smoothly. This function can also be
used when switching to commercial power.
1c-contact output: (250 V ac - 2 A (cosΦ=1): At resistive load, 30 V dc -1 A, 250 V ac - 1 A (cosΦ=0.4))
Specification
L-2
E6581595
Note 1