Chapter 2 Mechanical Installation
JT550 Series Inverter Manual
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1.5 Technical Specifications
Table 1.2 Technical Specifications of JT550
Item
Specification
Standard
functions
Maximum frequency
320Hz
Carrier frequency
0.5kHz~16.0kHz
The carrier frequency is automatically adjusted based on the
temperature
Input frequency resolution
Digital setting:0.01Hz
Analog setting:maximum frequency×0.025%
Control mode
Voltage/Frequency(V/F) control
Sensorless Vector Control (SVC)
Feedback Vector Control (FVC)
Startup torque
G type: 0.5Hz/150% (SVC); 0Hz/180% (FVC)
P type: 0.5Hz/100%
Speed range
1:100(SVC)
1:1000(FVC)
Speed stability accuracy
±0.5%(SVC)
±0.02%(FVC)
Torque control accuracy
±0.5% (FVC)
Overload capacity
G type: 60s for 150% of rated current and 3s for 180% of
rated current
P type: 60s for 120% of rated current and 3s for 150% of
rated current
Torque boost
Automatic torque boost
Manual torque boost 0.1%~30.0%
V/F curve
Straight-line V/F curve
Multi-point V/F curve
Square V/F curve
Ramp mode
Straight-line ramp
S-curve ramp
Four groups of acceleration/deceleration time with the range
of 0.0–6500.0s
DC braking
DC braking frequency: 0.00Hz to max.frequency
Braking time: 0.0–100.0s
Braking action current value: 0.0%~100.0%
JOG control
JOG frequency range: 0.00–50.00 Hz
JOG acceleration/deceleration time: 0.0–6500.0s
Simple PLC, multiply speed
running
The system implements up to 16 speeds by using simple PLC
function or by using digital input signals.
Onboard PID
It implements the closed-loop process control system easily.
Auto voltage regulation
(AVR)
The system maintains a constant output voltage
automatically when the grid voltage changes through the
permissible range.
Standard
functions
Overvoltage& Overcurrent
stall control
The current and voltage are limited automatically during the
running process so as to avoid frequent tripping due to
overvoltage and overcurrent.
Rapid current limit
It decreases the overcurrent faults to the minimum and
ensures normal running of the AC drive.
