User`s manual

ManualsBrandsYASKAWA ManualsConsumer electronicsVS MINI J7

Multi-function I/0 Chapter 5-9

Operation in 2-wire Sequence (Set Value: 2)

• The Inverter operates in 2-wire sequence by setting a multi-function input

parameter to 2 (reverse/stop).

• The following diagram shows a wiring example of the terminals in 2-wire

sequence.

Operation in 3-wire Sequence (n37 = 0)

• The Inverter operates in 3-wire sequence by setting n37 for multi-function

input 2 to 0.

• Only n37 can be set to 0 (3-wire sequence). By making this setting, the

set value in n36 is ignored and the following settings are forcibly made.

S1: RUN input (RUN when ON)

S2: STOP input (STOP when OFF)

S3: Forward/Reverse rotation command (OFF: Forward; ON: Reverse)

• The following diagram shows a wiring example of the terminals in 3-wire

sequence.

External Base Block Command (Set Value: 11, 12)

When an SPST-NO (setting: 12) or SPST-NC (setting: 13) input is received,

Inverter outputs are shut OFF. Use these inputs in the following cases to stop

Inverter outputs.

• For switching the motor to free running status when applying an external

brake.

• For stopping Inverter outputs before disconnecting motor wiring when

changing the motor connections from the Inverter to a commercial power

supply.

Note The external base block only shuts OFF the Inverter’s output frequency, and

the Inverter’s internal frequency continues to be calculated as usual.

Therefore, if the external base block is clearedwhen the frequency is other

than zero, the frequency calculated at that point will be output. Because of

this, if the baseblock is cleared during deceleration while the motor is free

running, a large discrepancy between the motor speed at that moment and

the Inverter output frequency may result in a main circuit overvoltage (OV) or

overcurrent (OC).

Forward-rotation

switch

Reverse-rotation

switch

Forward/Stop (Forward rotation with the forward-rotation switch

closed and reverse-rotation switch opened)

Reverse/Stop (Reverse rotation with the reverse-rotation switch

closed and forward-rotation switch opened) _: 2 to 5

Sequence input common

Stop switch

(NC)

Operation

switch (NO)

Direction switch

RUN input (RUN with the STOP switch and RUN switch closed)

STOP input (with the STOP switch opened)

Foward/Reverse rotation command (Forward rotation with the direction

switch opened and reverse rotation with the direction switch closed

Sequence input common