AC70T Crane Purpose VFD Manual
3
Inrush current
Lower than rated current
Power factor
≥
0.94(with DC reactor)
Efficiency
≥
96%
Output
Output voltage
Output under rated condition: 3 phase, 0
～
input voltage, inaccuracy<5%
Output frequency
G type:0
～
600Hz
Output frequency
Max frequency ±0.5%
Overload capacity
G type: 150% rated current/1 min, 180% rated current/10s, 200% rated
Main
Control
performa
nce
Steady speed accuracy
V/F without PG , VC without PG, V/F with PG, VC with PG
Starting torque
Optimized SVPWM mode
Steady speed accuracy
0.7
～
16.0kHz
Starting torque
VC without PG: rated load 1:100; VC with PG: rated load 1:1000
Steady speed accuracy
VC without PG:
≤
2% rated synchronized speed; VC with PG:
≤
0.05% rated
Starting torque
VC without PG: when 0.5Hz, 150% rated torque; VC with PG: when 0Hz,
Torque response
VC without PG:
≤
20ms; VC with PG:
≤
10ms
Frequency accuracy
Digit setting: max frequency×±0.01%; Analog setting: max frequency×±0.2%
Frequency resolution
Digit setting: 0.01Hz; Analog setting: max frequency×0.05%
Basic
functions
DC braking capacity
Starting frequency:0.00
～
50.00Hz; Braking time:0.0
～
60.0s; Braking
Torque boost capacity
Auto torque upgrade 0.0%
～
100.0%; Manual torque upgrade 0.0%
～
30.0%
V/F curve
4 modes: one linearity torque characteristic curve ,one self-setting V/F curve
mode, one drop torque characteristic curve (1.1- 2.0 powers),and square V/F
Acceleration/Decelerati
on curve
2 modes: linear Acceleration/Deceleration and S curve
Acceleration/Deceleration. 4 sets of ACC/DEC, time unit 0.01s selectable,
Rated output voltage
Rely on power supply voltage compensate function, while motor rated voltage
is 100%, set it at the range of 50-100%(output can not over input voltage).
Voltage
While power supply voltage fluctuates, it can auto-keep constant output
Auto energy-saving
running
While under V/F control mode, according to load situation, auto-optimize
output voltage to save energy.
Auto-limit current
Auto-limit the current while running to prevent over current break trouble.
Instant power off
While instant power off, realize continual operation by bus voltage control.
Standard functions
PID control, speed track, power off restart, jump frequency, upper/lower
frequency limit control, program operation, multi- speed, RS485, analog
Frequency setting
channels
Keyboard digital setting, Analog voltage/current terminal AI1, Analog
voltage/current terminal AI2, Communication given and multi-channel terminal
selection, Main and auxiliary channel combination, expansion card, supporting
Feedback input
channel
Voltage/Current Terminal AI1, Voltage/Current Terminal AI12, Communication
given, Low-speed pulse input PUL, extension card
Running command
Operation panel given, external terminal given, communication given,
Input command signal
Start, stop, FWD/REV, JOG, multi-step speed, free stop, reset, ACC/DEC time
selection, frequency given channel selection, exterior fault alarm.
Exterior output signal
1 relay output, 1 collector output, 1 AO output: 0
～
10V output or 4
～
20mA
output, or frequency pulse output
Protection function
Overvoltage, under-voltage, current limit, over-current, overload, electric
thermal relay, overheat, overvoltage stall, data protection, rapid speed
Keyboar
LED display
Single file 5 digital tube display
Can monitor one state variable
