Nissei VF-nC3M User Manual

ＮＩＳＳＥＩ ＣＯＲＰＯＲＡＴＩＯＮ E6581815
F-49
6
6.18 Protection functions
6.18.1 Setting motor electronic thermal protection
 : Motor electronic-thermal protection level 1
 : Motor 150% overload detection time
 : Electronic-thermal memory
 Function
This parameter allows selection of the appropriate electronic thermal protection characteristics
according to the particular rating and characteristics of the motor.
[Parameter setting]
Title Function Adjustment range Default setting

Motor electronic-thermal protection
level 1
10-100 (%) / (A)
0.1kW model : 64
0.2kW model : 61
0.4kW model : 73
0.75kW model : 80
1.5kW model : 82
2.2kW model : 82

Motor 150% overload detection time 10-2400 (s) 60
f632
Electrical-thermal memory 0: Disabled, 1: Enabled 0
Refer to section 3.4 for details.
Note 1: Motor electronic-thermal protection level 1 is set to the default setting by each motor. Please consult
us if the protection level changes to suppress motor trouble.
6.18.2 Setting of stall prevention level
 : Stall prevention level 1
Caution
Prohibited
 Do not set the stall prevention level () extremely low.
If the stall prevention level parameter (
) is set at or below the no-load current of the motor, the
stall preventive function will be always active and increase the frequency when it judges that
regenerative braking is taking place.
Do not set the stall prevention level parameter (
) below 30% under normal use conditions.
 Function
This parameter adjusts the output frequency by activating a current stall prevention function against a
current exceeding the
-specified level.

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