Toshiba VF-A7 Standard connection diagram for sink logicminus common, Motor Main circuit

2.2 Standard connection

Danger

-Do not connect the power cables to any output terminal (U/T1, V/T2 or W/T3 on the motor side), or the inverter could break down and cause a fire.

-Do not connect a resistor to any D.C. terminal (between PA and PC or PO and PC), or Prohibited the inverter could cause a fire.

To install external braking resistor, refer to 6.13.4.

-Connect grounding wires correctly and securely. Failure to do so could cause an electric shock or a fire if current leakage occurs or the inverter breaks down.

Be Grounded

[Standard connection diagram for sink logic(minus common)]

200V class: 0.4～22kW

400V class: 0.75～22kW	*	External braking resistor（Refer to 6.13.4 for details）
DC reactor (DCL)		When using an external braking resistor in 3.7kW
		model or less, change the connection of the internal
*2 (Optional)
		resistor from terminal PB1 to terminal PR1.

Main circuit power supply

200V	class（0.4～7.5kW）：							This circuit is provided
	3-phase 200～230V-50/60Hz
200V	class（11～22kW）：	PO	PA	PB	PC	(PA1)(PB1)		only for the 3.7kW and
	3-phase 200～220V-50Hz						(PR1)	smaller models.
	3-phase 200～230V-60Hz
400V	class（0.75～22kW）
	3-phase 380～460V-50/60Hz

	MCCB		R/L1			Built-in dynamic braking			resistor	Motor
							U/T1
			S/L2		Main circuit		V/T2			IM
			T/L3				W/T3
*When using a separate power source				R0	Control			F		Forward
for the	control circuit		＊１	CN21
For the 22kW and smaller models,					circuit
				S0				R		Reverse
power is supplied to the control circuit
from the main circuit. An optional device				FLA
is required to		CN21						ST		Standby
supply	from			FLB
another source.								RES		Reset
(though		Control circuit			FL						Factory
terminals only		Option		FLC
are provided.)								S1		Preset	default
*1: The control power supply terminals						Control panel				speed 1	settings
										Preset
				P24				S2
RO and SO are optionally										speed 2
available for the 22kW and			Ry	OUT1		Connector for		S3		Preset
smaller models. Though terminals						common serial
RO and SO are fitted as						communication	SINK			speed 3
										Preset
				OUT2		RS485 connector		S4
standard for the 22kW and			Ry
smaller models as well, they						for serial	SOURCE			speed 4
				G/E		communication
are not connected internally.								CC		Common
*2: The inverter is shipped with										Current	signal
the terminals PO and PA				FP FM AM CC		RX VI RR	PP ＩＩ
shorted with a bar. Remove										：4 to 20mA
this shorting bar when installing
a DC reactor (DCL).
		＋	＋	＋					Voltage signal：-10～+10V
		Digital	Frequency	Ammeter
		voltmeter							Voltage signal： 0～10V
			meter
		－	－	－
			Voltmeter or ammeter			External potentiometer
						(or voltage signal between RR and CC: 0～10V)

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