Toshiba VF-A7 Terminal symbol, Inverter internal circuit, R0, S0 R46, R41, R20, S20

Terminal symbol

PC

PO, PA

R20, S20

(PR1), (PB1)

(PA1)

Terminal symbol

R/L1, S/L2, T/L3 U/T1, V/T2, W/T3 G/E

Function

A negative potential terminal of the internal dc main circuit. This terminal can be used to connect a dc common power source in conjunction with the terminal PA (positive potential).

Used to connect a DC reactor (DCL: external option). The inverter is shipped with these terminals shorted. So, remove the shorting bar when connecting a DCL.

Used to connect the control output cables. Provided only for the 400V class 37kW and larger models. (10VA)

400V 37～75kW: Single-phase 207.5～220V 50Hz, 207.5～230V-60Hz 110～280kW: Single-phase 207.5～230V-50/60Hz

Already connected to the internal dynamic braking resistor. If there is no need to use the resistor, change its connection from (PB1) to (PR1) and change the settings of the dynamic braking parameters ,. Provided only for the 3.7kW and smaller models.

Used exclusively for the internal resistor. Do not remove nor connect any external device. Provided only for the 3.7kW and smaller models.

			Inverter internal circuit
	R/L1			U/T1
	S.L2	A		V/T2
	T/L3			W/T3
	G/E
Circuit of A
200V	class 0.4～7.5kW, 400V			class 0.75～15kW…noise filter circuit
200V	class 11～90kW, 400V		class 18.5～280kW…noise by-pass circuit

R0, S0

(R46, R41, R20, S20)

Ｒ/Ｌ１			R/L1
Ｓ/Ｌ２			S/L2
Ｔ/Ｌ３		CONTROL CIRCUIT	T/L3
Ｓ０			S0
Ｒ０			R0
	CN21

Fig.1

Fig.1: 200V class 0.4～22kW 400V class 0.7～22kW Fig.2: 200V class 30～90kW

400V class 30kW Fig.3: 400V class 37～220kW

CIRCUIT

CONTROL

Fig.2

R/L1

S/L2

T/L3

R46	CONTROL CIRCUIT
R41
S0
R20

S20

Fig.3

P0, PA, PB, PC, (PA1),(PB1),(PR1)

	Internal braking resistor
ＰＲ１		Braking resistor
ＰＡ１	ＰＢ
ＰＢ１	ＰＡ
ＰＡ	Ｐ０
Ｐ０
		(*1)
		(*2)
	ＰＣ
ＰＣ
	Fig.1	Fig.2

Fig.1: 200V class 0.4～3.7kW, 400V class 0.75～3.7kW

Fig.2: 200V class 5.5～90kW, 400V class 5.5～280kW

(*1) Rush-current prevention circuit is in plus line or minus line. 18.5 and 22kW models contain it in the rectifier-circuit part.

(*2) The dynamic-braking circuit of 30kW model or larger are served as option correspondence.

B-7