Toshiba VF-NC3C Bedienungsanleitung

INSTRUCTION MANUAL

VF-NC3C

1. THIS INSTRUCTION MANUAL IS

SUBJECTED TO BE CHANGED WITHOUT

NOTICE.

2. THIS INSTRUCTION MANUAL IS FOR

STUDY REFERENCES ONLY.

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-1

2. Connection

Warning

Disassembly

prohibited

Never disassemble, modify or repair.

This can result in electric shock, fire and injury. For repairs, call your sales agency.

Prohibited

Don't stick your fingers into openings such as cable wiring hole and cooling fan covers.

This can result in electric shock or other injury.

Don't place or insert any kind of object into the inverter (electrical wire cuttings, rods, wires). This can

result in electric shock or fire.

Do not allow water or any other fluid to come in contact with the inverter.

That may result in electric shock or fire.

Caution

Prohibited

When transporting or carrying, do not hold by the front panel covers.

The covers may come off and the unit will drop out resulting in injury.

2.1 Cautions on wiring

Warning

Prohibited

Never remove the terminal cover when power is on or open door if enclosed in a cabinet.

The unit contains many high voltage parts and contact with them will result in electric shock.

Mandatory

action

Turn power on only after attaching the front cover or closing door if enclosed in a cabinet.

If power is turned on without the terminal cover attached or closing door if enclosed in a cabinet. This

can result in electric shock or other injury.

Electrical construction work must be done by a qualified expert.

Connection of input power by someone who does not have that expert knowledge may result in fire or

electric shock.

Connect output terminals (motor side) correctly.

If the phase sequence is incorrect, the motor will operate in reverse and that may result in injury.

Wiring must be done after installation.

If wiring is done prior to installation that may result in injury or electric shock.

The following steps must be performed before wiring.

(1) Shut off all input power.

(2) Wait at least 15 minutes and check to make sure that the charge lamp is no longer lit.

If these steps are not properly performed, the wiring will cause electric shock.

Tighten the screws on the terminal board to specified torque.

If the screws are not tightened to the specified torque, it may lead to fire.

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-2

Warning

Be Grounded

Ground must be connected securely.

If the ground is not securely connected, it could lead to electric shock or fire when a malfunction or

current leak occurs.

Caution

Prohibited

Do not attach devices with built-in capacitors (such as noise filters or surge absorber) to the output

(motor side) terminal.

This could cause a fire.

Preventing radio noise

To prevent electrical interference such as radio noise, separately bundle wires to the main circuit's power

terminals (R/L1, S/L2, T/L3) and wires to the motor terminals (U/T1, V/T2, W/T3).

Control and main power supply

The control power supply and the main circuit power supply for this inverter are the same.

If a malfunction or trip causes the main circuit to be shut off, control power will also be shut off. When

checking the cause of the malfunction or the trip, use the trip holding retention selection parameter.

Wiring

Because the space between the main circuit terminals is small use sleeved pressure terminals for the

connections. Connect the terminals so that adjacent terminals do not touch each other.

For ground terminal use wires of the size that is equivalent to or larger than those given in table 10.1

and always ground the inverter (400V voltage class: C type ground).

Use as large and short a ground wire as possible and wire it as close as possible to the inverter.

For the sizes of electric wires used in the main circuit, refer to the table in section 10.1.

The length of the main circuit wire in table 10.1 should be no longer than 30 meters. If the wire is longer

than 30 meters, the wire size (diameter) must be increased.

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-3

2.2 Standard connections

Warning

Prohibited

Do not connect input power to the output (motor side) terminals (U/T1, V/T2, W/T3).

Connecting input power to the output could destroy the inverter or cause a fire.

First shut off input power and wait at least 15 minutes before touching wires on equipment (MCCB) that

is connected to inverter power side.

Touching the wires before that time could result in electric shock.

Mandatory

action

Set parameter  when VI terminal is used as logic input terminal.

If it is not set, it could result in malfunction.

Be Grounded

Ground must be connected securely.

If the ground is not securely connected, it could lead to electric shock or fire when a malfunction or

current leak occurs.

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-4

2.2.1 Standard connection diagram 1

This diagram shows a standard wiring of the main circuit.

MCCB R/L1

S/L2

T/L3

U/T1

V/T2

W/T3

Motor

P24

OUT

FM CC VI P5

PA/+ PB

Meter Voltage signal: 0-5V/0-10V

(Current signal: 4-20mA)

External potentiometer (1k-10k)

Protective function

activation output

VF-nC3C

Power

circuit

Forward

Reverse

Preset-speed 1

Preset-speed 2

Common

Standard connection diagram - SINK (Negative) (common:CC)

7.5V-1mA

(or 0-10V/4-20mA)

Low-speed

signal output

*1: VFNC3C-4004P, 4007P models don’t

have the PA/+ and the PB terminals

and cannot be used with Braking

resistor.

*2: When using the OUT output terminal in

sink logic mode, short the NO and CC

terminals.

Control

circuit

I M

Frequency

meter

(ammeter)

Operation panel

FLC

FLB

FLA

*3: When external potentiometer is connected

by using P5 terminal, set the parameter

f 1 0 9 =3.

RS485

communication

connector

*4: When VI terminal is used as a logic

input terminal, refer to page B-10.

Main circuit power supply

3ph-400V class: three-phase 380-460V

-50/60Hz

Braking resistor（Option）*1

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-5

2.2.2 Standard connection diagram 2

MCCB R/L1

S/L2

T/L3

U/T1

V/T2

W/T3

Motor

OUT

Meter

External potentiometer (1k-10k)

Control

circuit

Protective function

activation output VF-nC3C

Power

circuit

Forward

Reverse

Preset-speed 1

Preset-speed 2

Standard connection diagram - SOURCE (Positive) (common:P24)

7.5V-1mA

(or 0-10V/4-20mA)

FM CC VI P5

Voltage signal: 0-5V/0-10V

(Current signal: 4-20mA)

Low-Speed

signal output

*2: When using the NO output terminal in

source logic mode, short the P24 and

OUT terminals.

I M

Frequency

meter

(ammeter)

RS485

communication

connector

Operation panel

FLC

FLB

FLA

*3: When external potentiometer is connected

by using P5 terminal, set the parameter

f 1 0 9 =3.

Main circuit power supply

3ph-400V class: three-phase 380-460V

-50/60Hz

*4: When VI terminal is used as a contact

input terminal, refer to page B-10.

P24 Common

*1: VFNC3C-4004P, 4007P models don’t

have the PA/+ and the PB terminals

and cannot be used with Braking

resistor.

PA/+ PB

Braking resistor（Option）*1

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-6

2.3 Description of terminals

2.3.1 Power circuit terminals

This diagram shows an example of wiring of the main circuit. Use options if necessary.

Power supply and motor connections

Connections with peripheral equipment

Motor

Power

supply

Inverter

Braking resistor

No-fuse

braker

R/L1

S/L2

T/L3

PA/+

V/T2

U/T1

W/T3

Magnetic

contactor

Input AC

reactor

Zero-phase

reactor

Note 1: The PA/+ and PB terminals are not provided for VFNC3C-4004P, 4007P models.

Power supply

S/L2

T/L3

Motor

No-fuse

breaker

Connect the power

cables to R/L1, S/L2,

and T/L3.

Connect the motor

cables to U/T1, V/T2

and W/T3.

VF-nC3C

U/T1

V/T2

W/T3

R/L1

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-7

Power circuit

Terminal symbol

Terminal function

Grounding terminal for connecting inverter. There are 3 terminals in total.

R/L1,S/L2,T/L3

400V class: three-phase 380 to 460V-50/60Hz

U/T1,V/T2,W/T3

Connect to a (three-phase induction) motor.

PA/+,PB

Connect to braking resistors.

Change parameters ,,, if necessary.

The arrangements of power circuit terminals are different from each range.

Refer to section 1.3.3.1) for details.

2.3.2 Control circuit terminals

The control circuit terminal board is common to all equipment.

Regarding to the function and specification of each terminal, please refer to the following table.

Refer to section 1.3.3.3) about the arrangement of control circuit terminals.

Control circuit terminals

Terminal

symbol

Input /

output

Function

Electrical

specifications

Inverter internal circuits

Input

Multifunction programmable logic input

Shorting across F-CC causes

forward rotation; open causes slow-

down and stop. (When Standby ST

is always ON)

3 different functions can be

assigned.

No voltage

logic input

24Vdc-5mAor less

*Sink/Source

selectable using

parameter 

(In case of sink

logic is the left)

2.2k

+24V

ON:

Sink

OFF:

Source

2.2k

470

OFF:

External

24V

P24

Input

Shorting across R-CC causes

reverse rotation; open causes slow-

down and stop. (When Standby ST

is always ON)

3 different functions can be

assigned.

Input

Shorting across S1-CC causes

preset speed operation.

2 different functions can be

assigned.

Input

Shorting across S2-CC causes

preset speed operation.

2 different functions can be

assigned.

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-8

Terminal

symbol

Input /

output

Function

Electrical

specifications

Inverter internal circuits

Common

to Input /

output

Control circuit's equipotential terminal (2

terminals)

Output

Analog power supply output

5Vdc

(permissible load

current: 10mA)

100

+5V

V I

Input

Multifunction programmable analog input.

Factory default setting: 0-10Vdc (1/1000

resolution) and 0-60Hz (0-50Hz)

frequency input.

The function can be changed to 0-20mAdc

(4-20mA) current input by parameter 

=1 setting.

0-5Vdc (1/1000 resolution) voltage input

by parameter  =3 setting.

Switch to this setting when external

potentiometer is connected by using P5

terminal.

By changing parameter f109=2 setting,

this terminal can also be used as a

multifunction programmable logic input

terminal. When using the sink logic, be

sure to insert a resistor between P24-VIA

(4.7 k-1/2 W).

5V/10Vdc

(internal impedance:

40k)

4-20mA

(internal

impedance: 250)

Note 1)

1.6k

+5V

250

39.2k

47k

ON:Current

OFF:Voltage

ON:10V

OFF:5V

Output

Multifunction programmable analog

output. Standard default setting: output

frequency.

The function can be changed to 0-10Vdc

voltage or 0-20mAdc (4-20mA) current

output by parameter  setting.

1mAdc full-scale

ammeter

0-10V DC volt

meter

0-20mA(4-20mA)

DC ammeter

Permissible load

resistance:

750Ω or less

0-10V DC volt

meter

2.7k

+24V

121

ON:Current

–

ON:Voltage

Meter

ON:Meter

–

Note 1) Be careful, if 4-20mA is selected, when the inverter's power is ON, the internal impedance is 250Ω, but when the power

is OFF, the internal impedance increases very much to approximately 40kΩ.

FOR REFERENCES ONLY VFNC3C ENGLISH MANUAL NOT SUBJECTED FOR RESALE

B-9

+24V

Over current

protection circuit

P24

OFF:f 1 2 7 =200

Terminal

symbol

Input /

output

Function

Electrical

specifications

Inverter internal circuits

P24

Output

24Vdc power output

24Vdc-100mA

Input

This terminal can be used as an external

24Vdc input for logic input terminal by

changing parameter f127=200.

OUT

Output

Multifunction programmable open

collector output. Standard default settings

detect and output low speed signal.

Multifunction output terminals to which

two different functions can be assigned.

The NO terminal is an isoelectric output

terminal. It is insulated from the CC

terminal.

By changing parameter settings, these

terminals can also be used as

multifunction programmable pulse train

output terminals.

Open collector output

24Vdc-100mA

To output pulse

trains,

a current of 10mA

or more needs to

be passed.

Pulse frequency

range:

38～1600pps

OUT

FLA

FLB

FLC

Note 2)

Output

Multifunction programmable relaycontact

output.

Detects the operation of the inverter's

protectionfunction.

Contact across FLA-FLC isclosed and FLB-

FLC is opened during protection function

operation.

250Vac-2A

(cos=1)

: at resistance

load

30Vdc-1A

250Vac-1A

(cos=0.4)

Min.permissible

load

5Vdc-100mA

FLA

FLC

FLB

+24V

Note 2) Please use the OUT terminal as much as possible when the programmable controller is connected.

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