Toshiba VF-S9 manual Connecting an external braking resistor optional

Models: VF-S9

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1) Connecting an external braking resistor (optional)

E6580757

1) Connecting an external braking resistor (optional)

Separate-type optional resistor (with thermal fuse)

 

 

 

External braking resistor (optional)

 

 

 

PBR

 

 

MCCB

PA

PB

 

Three-phase

R/L1

 

U/T1

Motor

 

 

 

 

 

IM

main circuits

S/L2

 

V/T2

Power supply

T/L3

 

W/T3

 

 

 

 

 

 

Inverter

 

Connecting thermal relays and an external braking resistor

 

 

 

 

External braking resistor

 

 

 

 

(optional)

 

 

 

 

TH-R

PBR

 

 

Without control power

 

 

 

 

MCCB

MC

 

PA PB

Motor

Three-phase

 

 

R/L1

U/T1

 

main circuits

 

 

R/L2

V/T2

IM

Power supply

 

 

R/L3

W/T3

 

6

Step-down

 

 

 

 

 

 

transformer

 

 

 

 

2 : 1

 

 

Inverter

 

 

 

 

Forward run/stop

 

MC

FLB

F

Fuse

 

Surge

K

Reverse run/stop

 

 

suppressor

CC

 

Power supply

TC

 

FLC

 

 

 

 

 

 

 

 

FLA

G

 

[Parameter setting]

 

 

 

 

 

Title

Function

 

 

Setting

 

Dynamic braking selection

 

 

2

 

Braking resistor operation rate

 

 

Any value

 

Overvoltage limit operation

 

 

1

 

Optional dynamic braking resistor capacities are selected for an operation rate of 3%ED.

To connect a dynamic braking resistor, set the overvoltage limit operation parameter Connecting thermal relays and an external braking resistor to "1" (Disabled).

To use this inverter in applications that create a continuously regenerative status (such as down- ward movement of a lift, a press or a tension control machine), or in applications that require slowdown stopping of a machine with a significant load inertial moment, increase the dynamic braking resistor capacity according to the operation rate required.

To connect an external dynamic braking resistor, select one with a resultant resistance value greater than the minimum allowable resistance value. Be sure to set the appropriate operation

rate in Manual background to ensure overload protection.

To use a braking resistor without a thermal fuse or to use a braking resistor in mode

" Manual background " of Manual background , connect thermal relays as shown in the diagram above, to make an operation cir- cuit for stopping operation.

F-28

Page 112
Image 112
Toshiba VF-S9 Connecting an external braking resistor optional, Connecting thermal relays and an external braking resistor