Item	Technical Index	Specification
Input	Input voltage	1AC **0~**0V±*5%
		3AC **0~**0V±*5%
	Input frequency	*0/*0Hz±5%
Output	Output voltage	0~rated voltage
	Output frequency	0~***0Hz
Control Features	Control mode	V/f control
Starting torque	1Hz/**0% (V/f)
Operation command mode	Keypad control
	Terminal control
	Serial communication control (Modbus)
Acceleration/deceleration mode	Straight line/S curve; four kinds of acceleration/deceleration time, range: 0.0s~****0s
V/f curve	Three types: linear, multiple point and square type   (1.2 power, 1.4 power, 1.6 power, 1.8 power, square)
Simple PLC & multi-step speed operation	It can realize a maximum of *6 multi-step speeds running via  the built-in PLC or control terminal.
Built-in PID	Built-in PID control to easily realize the close loop control of the process parameters (such as pressure, temperature, flow, etc.)
Control Function	Over-voltage & over-current stall control	Limit current & voltage automatically during the running process, prevent frequent over-current & over-voltage tripping
Torque control	Torque control without PG
Wobble frequency control	Multiple triangular-wave frequency control, special for textile
Timing/length/counting control	Timing/length/counting control function
Fault protection function	Comprehensive protection includes overcurrent, overload, overvoltage, low voltage protection, overheat protection, ground protection, and output deficiencies. Detailed operational data can be recorded when a fault occurs.
Input/output terminals	Output terminals	2 relay outputs,
		2 open collector outputs,
		2 anaalog outputs, 0~*0V / 4~*0mA
	Communication terminals	Build-in standard RS**5 communication interface, support  MODBUS-RTU communication protocol
Environment	Ambient temperature	**0~*0°C, without direct sunshine.
	Humidity	*0%RH or less (non-condensing)
	Altitude	≤***0M: output rated power, >***0M: output derated
	Storage temperature	**0~*0°C