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Samsung MOSCON-E7 - User Manual

Samsung MOSCON-E7
88 pages
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PREFACE
Thank for purchasing small general-purpose
multi-functional inverter MOSCON-E7.
MOSCON-E7 is a small and easy to use inverter.
This user’s manual describes installation,
maintenance and inspection, troubleshooting and
specifications of the MOSCON-E7.
Read this user’s manual thoroughly for safe
operation of the system and retain for future
reference.
Samsung Electronics Co., Ltd.
Copyrightⓒ2001 Samsung Electronics Co., Ltd.
MOSCON-E7 is trademarks of Samsung Electronics Co., Ltd.
The software and hardware described in this manual is protected by the copyright.
No part of this manual may be photocopied or reproduced in part or in whole without the written
consent of Samsung Electronics Co., Ltd.
We will try our best to meet your demands with this manual.
Contact our office stated below in case of being a printing error, mistakes and improvement in
this manual.
Contact Office : Samsung Electronics Co., Ltd.
416, Maetan-3 Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea
TEL : 82-31-200-2489
FAX : 82-31-200-2295
General precautions
• This manual may contain some drawings with the
cover or protective shields removed for more
detail and clear explanation of the device. Make
sure to reassemble the device before operation.
• The information in this manual may be subject to
change without a previous notice in case of
modification or improvement, or changes in
specifications. Such modifications are denoted
by a revised manual number.
• Contact your Samsung representative or the
nearest Samsung sales office to order a copy of
this manual if it has been damaged or lost.
• Samsung is not responsible for any modification
of the product made by the user, since that will
void your guarantee.

Table of Contents

Questions and Answers

  • R
    Raymond CunninghamAug 16, 2025
    What to do if my Samsung Inverter shows OC1 Over current error?
    • M
      Melissa ElliottAug 16, 2025
      If your Samsung Inverter is showing an OC1 error, it means there's an overcurrent issue. This can happen due to a short-circuit or ground fault at the inverter output, possibly from motor damage or cable issues. It can also be caused by too large a load, too short acceleration/deceleration time, switching a magnetic switch at the inverter output, or using a special-purpose motor with too large a capacity. You should reset the fault after correcting the issue.
  • M
    Margaret WilliamsAug 19, 2025
    Why is my Samsung Inverter showing OV Main Over-Voltage error?
    • M
      millertimothyAug 19, 2025
      If your Samsung Inverter displays an OV error, it indicates a main over-voltage issue. This could be due to too short a deceleration time or too much regenerative energy from the motor. Try increasing the deceleration time or connecting a braking resistor or unit. Another cause could be too high a power supply voltage. In that case, decrease the voltage to stay within the specified limits.
  • V
    Veronica SimonAug 22, 2025
    What causes OL2 Inverter Over-load on a Samsung MOSCON-E7 and how to fix it?
    • J
      Johnny RodriguezAug 22, 2025
      If your Samsung Inverter is displaying an OL2 error, it means the inverter is overloaded. This can happen if the load is too heavy, or if the acceleration/deceleration and cycle times are too short. Check the load size and the duration of the acceleration/deceleration and cycle times. It could also be due to too high a V/f pattern, so check that as well. Finally, the inverter capacity might be too low, in which case you should replace it with one that has a larger capacity.
  • D
    Denise SimonAug 25, 2025
    What to do if my Samsung MOSCON-E7 displays OC2 Short circuit Error?
    • A
      ann33Aug 26, 2025
      If your Samsung Inverter shows an OC2 error, it indicates a short circuit. This is likely due to a short-circuit or ground fault at the inverter output, possibly caused by motor damage, worn insulation, or a damaged cable. Reset the fault after correcting the issue.
  • D
    Daniel MurrayAug 28, 2025
    Why does my Samsung MOSCON-E7 show OL1 Motor Over-load error?
    • K
      Kevin RyanAug 28, 2025
      If your Samsung Inverter displays an OL1 error, it means the motor is overloaded. This can happen if the load is too heavy or the acceleration/deceleration and cycle times are too short, so check the load size and these times. Also, check the V/f pattern, as it may be too high. Lastly, make sure that C2.03 (motor’s rated current) is set correctly.
  • F
    Felicia WeeksAug 30, 2025
    What to do if Samsung MOSCON-E7 Inverter shows OH2 Inverter Over-Heated error?
    • E
      Eric WilliamsAug 30, 2025
      If your Samsung Inverter is displaying the OH2 error, it means the inverter is overheating. This can be due to a high ambient temperature, so consider installing a cooling unit. It could also be caused by a heat source near the inverter, so remove any nearby heat sources. Lastly, the inverter cooling fan might be malfunctioning, in which case you should replace it. Contact Samsung for assistance.
  • E
    Elizabeth TorresSep 2, 2025
    What does UV1 Main Under-Voltage mean on my Samsung MOSCON-E7?
    • J
      johnjohnsonSep 3, 2025
      If your Samsung Inverter is displaying a UV1 error, it indicates a main under-voltage issue. This could be due to an open-phase in the input power supply, a momentary power loss, or too large a voltage fluctuation in the input power supply. Reset the fault after correcting the issue.
  • D
    Donald ReedSep 6, 2025
    What causes the OL3 Over-torque Det. error on a Samsung Inverter?
    • M
      Michael AlvaradoSep 6, 2025
      If your Samsung Inverter displays an OL3 error, it means it has detected over-torque. This can happen if the load is too heavy or the acceleration is too rapid. Set P3.02 and P3.03 appropriately. Also, check the mechanical system and correct the cause of the over torque.
  • M
    Matthew ThomasSep 9, 2025
    How to fix a FAN error on Samsung MOSCON-E7 Inverter?
    • M
      Michael RichardsonSep 9, 2025
      If the fan on your Samsung Inverter has stopped, it could be due to a defective cooling fan or fan cable. Check the wiring and replace the fan if necessary.
  • J
    John HammondSep 12, 2025
    What does EF4 External Fault (Terminal 4) mean on my Samsung MOSCON-E7?
    • J
      joyceguzmanSep 12, 2025
      If your Samsung Inverter is showing an EF4 error, it means an external fault was input from a multi-function input. Check if the multi-function input is properly selected and remove the cause of the external fault.

Summary

Installation

Wiring

Parameter setting

Maintenance and inspection

2. Installation

2.3.1 Precautions for delivery and installation

Safety warnings for handling and installing the inverter.

2.3.2 Installation site

2.3.3 Controlling the ambient temperature

2.3.4 Installation space

3. Wiring

3.1 Connection diagram

Illustrates the wiring connections for the inverter.

3.2 Terminal block configuration

3.3 Main circuit terminal functions

3.4 Control circuit terminal functions

3.6 Wiring the main circuits

Guidance for wiring the main circuits of the inverter.

3.6.2 Wiring on the output side of main circuit

Precautions and procedures for wiring the output side.

3.7.1 Control circuit wiring precautions

Guidelines for separating and routing control circuit wiring.

3.7.2 Main circuit input;output wiring

Specifics on connecting input/output wiring for main circuits.

3.8 Grounding

Proper grounding procedures and recommendations.

3.10 Wiring check

4 Digital operator

4.1 Usage of digital operator

How to use the digital operator for control and programming.

4.2 Monitoring functions of digital operator

Displays and information available via the digital operator.

4.3 Test run

5 Parameters

5.1.1 U-Parameter: Monitoring Function

5.1.2 Monitoring function setting

5.3 B-Parameter

Basic settings for inverter operation modes and initialization.

5.3.1 Basic setup

Configuration of frequency and run command sources.

5.3.1.3 Selecting stopping method: B0.03

5.3.1.4 Prohibiting the reverse rotation: B0.04

5.3.1.5 Setting the motor direction: B0.05

5.3.1.7 Setting the automatic start operation: B0.07

5.3.2 System initialization

5.3.2.1 Controlling the inverter initialization: B1.01

5.3.2.2 Setting and verifying the password: B1.02, B1.03

5.3.3 Setting power capacity

5.3.3.1 Setting the inverter and motor capacity: B2.01, B2.02

5.4 F-Parameter

Frequency control parameters for motor operation.

5.4.1 Frequency control functions

Functions related to frequency control.

5.4.1.1 Setting the frequency;speed command: F0.01~F0.09

Setting various frequency commands for multi-step operation.

5.4.2 Frequency limit

Setting upper and lower limits for output frequency.

5.4.2.1 Setting lower;upper frequency limit: F1.01,F1.02

Defining the maximum and minimum output frequency limits.

5.4.3 Jump frequency to avoid mechanical resonant oscillation

5.4.3.1 Setting jump frequency: F1.03~F1.06

5.4.5 accel;decel time

Setting acceleration and deceleration times.

5.4.5.1 Setting the accel;decel time: F2.01~F2.04

Setting acceleration and deceleration times for motor operation.

5.5 S-Parameter

Parameters related to system adjustments.

5.5.1 DC Braking

5.5.1.1 Controlling DC breaking: S0.01~S0.04

5.5.2 Speed search

5.5.2.1 Controlling the speed search operation: S1.01

5.5.2.2 Speed search level, current, and deceleration time

5.5.3 Dwell operation

5.5.3.1 Controlling the dwell operation: S2.01~S2.04

5.5.5 Slip compensation

5.5.5.1 Setting the slip compensation gain: S4.01

5.5.5.3 Slip compensation limit: S4.03

5.5.6 Automatic torque boost

5.5.6.1 Torque compensation gain: S5.01

5.5.7 System function compensation

5.5.7.1 Hunting prevention gain: S6.01;S6.03

5.6 C-Parameter: H;W Functionality setup

Hardware functionality settings.

5.6.1 V;f Setting

Configuring the V/f curve for motor control.

5.6.1.1 Setting V;f: C0.01

Selecting the V/f pattern for motor control.

5.6.1.2 Setting user-programmable V;f pattern

5.6.2 Carrier frequency setting

5.6.2.1 Setting the carrier frequency: C1.01

5.6.3 Main motor constants

Parameters related to motor characteristics.

5.6.3.1 Setting the Motor line-to-line resistance: C2.01

5.6.3.2 Setting the iron loss: C2.02

5.6.3.3 Setting the motor rated current: C2.03

5.6.3.4 Motor no-load current: C2.04

5.6.3.5 Setting the motor rated slip: C2.05

5.7 H-parameter: I;O Control functions

Input/Output control parameters.

5.7.1 Multi-function contact input

Configuring digital inputs.

5.7.1.1 Set input type of multi-function contact input: H0.01

5.7.1.2 Setting the function of contact input: H0.02~H0.05

5.7.2 Multi-function contact output

Configuring digital outputs.

5.7.2.1 Set output type of multi-function output: H1.01

5.7.2.2 Setting the function of multi-function output: H1.02

5.7.3 Multi-function analog input

Configuring analog inputs.

5.7.3.1 Analog input form: H2.01

5.7.3.3 Adjusting analog inputs: H2.03, H2.04, H2.06, H2.07

5.7.3.4 Setting the multi-function analog input terminal function: H2.05

5.7.4 Multi-function analog output: H3.01~H3.03

Configuring analog outputs.

5.7.4.1 Setting multi-function analog output: H3.01

5.7.4.2 Adjusting the monitor output: H3.02, H3.03

5.7.5 Digital operator setting

Settings related to the digital operator.

5.8 P-Parameter: Protective functions

Parameters for protecting the inverter and motor.

5.8.1 Motor overload protection

Protection against motor overheating.

5.8.1.1 Select motor protection: P0.01

Enabling or disabling motor overload protection.

5.8.1.2 Motor protection time constants: PO.02

Setting time constants for motor protection.

5.8.1.3 Motor selection: P0.03

Selecting motor type for appropriate protection characteristics.

5.8.2 Momentary power failure

How the inverter handles momentary power interruptions.

5.8.2.1 Operation at power loss: P1.01

Configuring inverter operation after momentary power loss.

5.8.2.2 Compensation time of power loss: P1.02

5.8.2.3 V;f recovery time: P1.03

5.8.2.4: Undervoltage level: P1.04

5.8.3 Stall prevention

Preventing motor stalls during operation.

5.8.3.1 Stall prevention at start: P2.01

Enabling stall prevention function during motor start.

5.8.3.2 Stall prevention level at start: P2.02

Setting the stall prevention current limit at motor start.

5.8.3.3 Stall prevention limit during acceleration: P2.03

5.8.3.4 Stall prevention at stop: P2.04

5.8.3.5 Stall prevention when the motor is running: P2.05

Setting stall prevention function during motor running.

5.8.3.6 Stall prevention when the motor is running at the desired frequency: P2.06

Setting the stall prevention level during running at desired frequency.

5.8.4 Overtorque detection: P3.01~P3.03

Detecting and responding to overtorque conditions.

5.8.4.1 Overtorque detection: P3.01

Configuring overtorque detection and response actions.

5.8.4.2 Overtorque detection level & overtorque delay time: P3.02,P3.03

Setting the level and delay time for overtorque detection.

5.8.5 Fault retry

Automatic restart attempts after faults.

5.8.5.1 Number of fault retry: P4.01

Setting the number of automatic retries after an inverter fault.

5.8.5.2 Output terminal function during fault retry: P4.02

5.8.5.3 Fan error: P5.01

5.9 Error Monitoring

6. Troubleshooting

6.1 Protective function;error description

Explains protective functions and error codes displayed by the inverter.

7. Maintenance and Inspection

7.1 Daily inspection

7.2 Periodic inspection

7.3 Part replacement

Samsung MOSCON-E7 Specifications

General IconGeneral
BrandSamsung
ModelMOSCON-E7
CategoryInverter
LanguageEnglish

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