Nissei VF-nC3M User Manual

ＮＩＳＳＥＩ ＣＯＲＰＯＲＡＴＩＯＮ E6581815
B-3
2
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.
 Do not insert a resistor between DC terminals (between PA/+ and PC/-, or between PO and PC/-).
It could 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.
 Do not shut down the external power supply on ahead when VI terminal is used as logic input terminal
by external power supply (f127=0).
It could result in malfunction as VI terminal is ON status.
Mandatory
action
 Confirm to logic setting of slide switch SW1 (LOGIC) and parameter f127 (sink/source switching)
when F, R, S1, S2 terminals and VI terminal are 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.

Nissei VF-nC3M Specifications

General

Brand	Nissei
Model	VF-nC3M
Category	Inverter
Language	English

Summary

Safety Precautions

Explanation of Markings

Details the meaning of warning and caution markings used in the manual and on the inverter.

Meanings of Symbols

General Operation Warnings

Covers critical warnings related to disassembly, prohibited actions, and mandatory operations.

Cautionary Measures

Details cautions for contact, mandatory actions, and transportation & installation.

Wiring Safety

Provides essential safety warnings and mandatory actions for electrical wiring.

Operational Safety

Outlines safety warnings and mandatory actions for inverter operation.

Read First

Names and Functions

Details the components and their functions, including exterior views and terminal boards.

Installation

Covers installation environment requirements and procedures.

Connection

Cautions on Wiring

Details essential safety warnings and mandatory actions for wiring.

Standard Connections

Illustrates standard wiring diagrams for SINK and SOURCE logic.

Description of Terminals

Explains the functions of power and control circuit terminals.

Operations

Simplified Operation

How to Operate the VF-nC3M

Setting Parameters

Setting and Display Modes

Describes the three display modes: Standard, Setting, and Status monitor.

How to Set Parameters

Explains parameter setting using Easy and Standard modes with panel keys.

Parameter Search Functions

Details functions for searching, setting by purpose, and resetting parameters.

EASY Key Function

Main Parameters

History Function Search

Guidance Function Setting

Setting Acceleration/Deceleration Time

Covers automatic and manual settings for acceleration and deceleration times.

Selection of Operation Mode

Explains how to select command and frequency setting modes.

Other Parameters

Input/Output Parameters

Input Signal Selection

Terminal Function Selection

Setting Frequency Command

Covers switching frequency commands and their characteristics.

Operation Frequency

Simple Servo Lock Function Settings

Explains enabling and configuring the simple servo lock function.

Trip-less Intensification

Covers auto-restart and regenerative power ride-through controls.

Dynamic Braking

Avoiding Overvoltage Tripping

Explains parameters for preventing overvoltage tripping during deceleration.

Brake Sequence Function

PID Control

Impact Stop Sequence Function

Torque Limit

Control Gain Adjustment Function

2nd Acceleration/Deceleration

Protection Functions

Details various protection functions like thermal, stall, trip retention, and emergency stop.

Operation Panel Parameter

Communication Function (RS485)

Operations with External Signal

Operating External Signals

I/O Signal Operations

Speed Instruction (Analog Signal) Settings

Monitoring Operation Status

Status Monitor under Normal Conditions

Display of Trip Information

Explains how to display trip codes and detailed trip information.

Peripheral Devices

Installation of Magnetic Contactor

Table of Parameters and Data

Input Terminal Function

Output Terminal Function

Before Making a Service Call

Trip Causes, Warnings, and Remedies

Lists common trip causes, probable causes, and suggested remedies.

Restoring the Inverter from a Trip

Provides methods for resetting the inverter after a trip.

Motor Not Running Without Trip Message

Determining Other Problems

Inspection and Maintenance

Regular Inspection

Periodical Inspection

Details periodic inspection procedures and checks for safe operation.

Disposal of the Inverter