Toshiba VF-A7 instruction manual  Voltage signals Current signals, × ＋

[Parameter]

Title	Function	Adjustment range	Default setting
		: Invalid
		: VI/II
		: RR
	Selection of synchronized	: RX
		: RX2 (optional)	
	torque bias input	: Panel input ( is enabled)
		: Binary / BCD input (optional)
		: Common serial communication option(FA30)
		: Serial communication RS485(FA32)
		: Communication add-on cassette option(FA33)
	Panel torque revised bias	～ [%]	
	input

For a crane/hoist, an elevator application, as lifted up and down at controlled speeds, its direction of rotation is frequently reversed. In such cases, the load can be started smoothly, by adding load torque into the torque reference equivalent to the additional torque, when starting acceleration after releasing the brake.

[Selection of external signals]

Reverse

Forward

Tension torque bias as additional torque

Additional torque (fixed direction)



voltage signals

current signals

RR-CC ―― 0～10V		(0～250%)	
RX-CC ―― 0～±10V		(-250～250%)	
VI-CC	―― 0～10V	(0～250%)	
II-CC	―― 4(0)～20mA	(0～250%)	

2) Selection of tension torque bias input and load sharing gain input

Load sharing gain

Internal torque ref.

Tension torque bias

＋

× ＋

＋

Torque reference

Title	Function	Adjustment range	Default setting
		: Invalid
		: VI/II
		: RR
	Selection of	: RX
		: RX2 (optional)	
	tension torque bias input	: Panel input ( is enabled)
		: Binary / BCD input (optional)
		: Common serial communication option(FA30)
		: Serial communication RS485(FA32)
		: Communication add-on cassette option(FA33)
	Panel tension torque bias	～ [%]	
		: Invalid
		: VI/II
		: RR
		: RX
	Load sharing gain input	: RX2 (optional)	
	selection	: Panel input ( is enabled)
		: Binary / BCD input (optional)
		: Common serial communication option(FA30)
		: Serial communication RS485(FA32)
		: Communication add-on cassette option(FA33)
	Panel load sharing gain	～ [%]	

F-44