SAJ VM1000B

Questions and Answers:

E
Elizabeth MorrisAug 13, 2025
What to do if SAJ VM1000B Controller shows overcurrent during acceleration?
- K
  Kevin RogersAug 14, 2025
  If the SAJ Controller experiences overcurrent during acceleration, it might be due to several reasons. The output circuit of the AC Drive could be grounded or short-circuited, requiring you to eliminate external faults. Alternatively, the acceleration time may be too short, so try increasing it. If the startup operation is performed on a rotating motor, select rotational speed tracking restart or start the motor after it stops. Finally, the AC Drive model might be of too small power, in which case you should select an AC Drive with higher power.
R
Robert NielsenAug 17, 2025
What to do if SAJ VM1000B Controller indicates overvoltage during deceleration?
- O
  oneillstephenAug 17, 2025
  If the SAJ Controller shows overvoltage during deceleration, it could be due to several reasons. The input voltage might be abnormal, so turn the input power to the normal range. Also, an external force might be driving the motor during deceleration, so cancel the external force. The deceleration time may be too short, so increase the deceleration time. The braking unit and braking resistor might not be installed, so install them.
N
nmilesAug 21, 2025
What causes overcurrent at constant speed in SAJ Controller?
- M
  Morgan DavisAug 21, 2025
  If the SAJ Controller experiences overcurrent at constant speed, it could be because the output circuit of the AC Drive is grounded or short-circuited, requiring you to eliminate external faults. Also, the AC Drive model might be of too small power, so select an AC Drive of higher power.
B
Brett EscobarAug 25, 2025
What should I do if SAJ VM1000B Controller displays overvoltage during acceleration?
- K
  Kelly LeeAug 26, 2025
  If the SAJ Controller shows overvoltage during acceleration, it could be due to several reasons. The input voltage might be abnormal, so turn the input power to the normal range. Also, an external force might be driving the motor during acceleration, so cancel the external force. The acceleration time may be too short, so increase the acceleration time. The braking unit and braking resistor might not be installed, so install them.
S
stonecarolineAug 28, 2025
Why does SAJ VM1000B Controller show overvoltage at constant speed?
- H
  harmonjeremyAug 28, 2025
  If the SAJ Controller experiences overvoltage at constant speed, it could be due to the input voltage being abnormal; in this case, turn the input power to the normal range. Another possibility is that an external force drives the motor during deceleration, so cancel the external force.
B
Brianna GutierrezSep 1, 2025
What causes SAJ Controller overcurrent during deceleration?
- D
  David HarringtonSep 1, 2025
  If the SAJ Controller experiences overcurrent during deceleration, it might be because the output circuit of the AC Drive is grounded or short circuited, so eliminate external faults. Alternatively, the deceleration time may be too short, so increase the deceleration time.
L
Lisa TylerSep 4, 2025
What to do if SAJ VM1000B displays undervoltage?
- M
  Michael JeffersonSep 5, 2025
  If the SAJ Controller shows undervoltage, it might be due to an instantaneous power failure on the input supply, so reset the fault. Also, the input voltage might not be within the normal range, so adjust the input voltage to the normal range.
R
robynperezSep 8, 2025
Why SAJ VM1000B Controller shows buffer resistance overload?
- B
  Brandon MillerSep 8, 2025
  If the SAJ Controller experiences buffer resistance overload, it is because the input voltage is not within the allowable range. Adjust the input voltage to the allowable range.

SAJ VM1000B Specifications

General

Brand	SAJ
Model	VM1000B
Category	Controller
Language	English

Summary

Preface

Safety precautions

Chapter 1 Product information

1.1 Technical specifications

Details the technical specifications of the VM1000B AC Drive, covering control, input/output, and environmental parameters.

1.2 Product nameplate

Provides information on the VM1000B AC Drive's nameplate, detailing model, power, and input/output specifications.

1.3 Model description

Explains the VM1000B AC Drive's model naming convention and decodes its various components and features.

1.4 Product model

Lists various VM1000B AC Drive models with their corresponding power, capacity, input/output current, and motor G/P ratings.

Chapter 2 Installation

2.1 Overall structural drawing (unit: mm)

Illustrates the external dimensions and mounting hole details for VM1000B AC Drive models (0.75kW-7.5kW and 11kW-110kW).

2.2 Keypad structural dimension diagram

Shows the dimensions and structure of the VM1000B AC Drive keypad and its associated mounting bracket.

2.3 Main circuit connection

Details the wiring diagrams and terminal functions for the main circuit connections of the VM1000B AC Drive.

2.4 Control circuit connection

Illustrates the control circuit wiring diagrams for VM1000B AC Drive models, covering digital and analog inputs/outputs.

Chapter 3 Display and operation

3.1 Keypad

Describes the VM1000B AC Drive keypad layout, indicators, and functions for parameter modification and status monitoring.

3.2 Description of indicators and keys

Explains the function of each indicator and key on the VM1000B AC Drive keypad for user interaction.

Chapter 4 Parameter function

4.1 Functional parameter

Details the VM1000B AC Drive's functional parameters, covering motor control, command sources, frequency settings, and timing.

4.2 Fault Records

Lists fault codes, types, reasons, and solutions for troubleshooting VM1000B AC Drive errors.

4.3 Monitoring parameters

Details the monitoring parameters of the VM1000B AC Drive, including frequency, voltage, current, and status indicators.

Chapter 5 Communication protocol

5.1 Communication control address

Explains Modbus communication protocol addresses for controlling VM1000B AC Drive operations and parameters.

5.2 Parameter status address

Provides a list of VM1000B AC Drive status parameters and their communication addresses for data retrieval.

5.3 AC Drive state and fault description

Describes VM1000B AC Drive states, communication faults, and their meanings for diagnostics.

5.4 EEPROM-RAM address exchange description

Explains how VM1000B AC Drive parameters are saved between EEPROM and RAM during communication.

Chapter 6 Troubleshooting & countermeasures

6.1 Faults and solutions

Provides a comprehensive list of fault codes, types, reasons, and solutions for troubleshooting VM1000B AC Drive issues.

6.2 Common faults and solutions

Lists common VM1000B AC Drive faults, their potential causes, and recommended solutions for quick resolution.

Chapter 7 Contect SAJ

Chapter 8 Warranty Policy

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