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Chroma A620028 - User Manual

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Table of Contents

Questions and Answers

  • T
    Tristan MartinAug 19, 2025
    What to do if Chroma A620028 Power Supply shows Over Temperature Protection (OTP)?
    • J
      javiercruzAug 19, 2025
      If the Chroma Power Supply displays an Over Temperature Protection (OTP) error, it could be due to two reasons. First, the ambient temperature might be too high. Ensure the instrument is operated within a temperature range of 0 to 40°C. Second, the vent could be blocked. Make sure to clear the vent to allow for proper ventilation.
  • S
    Shawn PruittAug 21, 2025
    What to do if Chroma Power Supply shows Over Current Protection (OCP)?
    • C
      Christopher DurhamAug 21, 2025
      If the Chroma Power Supply shows an Over Current Protection (OCP) fault, it means the output current exceeds the specified limits or the OCP settings. To resolve this, remove the overload connected to the power supply or increase the OCP settings.
  • M
    Michele YoungAug 23, 2025
    What to do if Chroma Power Supply shows Over Power Protection (OPP)?
    • S
      Stephanie PerezAug 25, 2025
      If the Chroma Power Supply displays an Over Power Protection (OPP) error, it indicates that the output power is exceeding the specified limits or the OPP settings. To fix this, remove the overload or increase the OPP settings.
  • J
    Jason BurtonAug 26, 2025
    What does Input Error Protection 1 AC FAULT mean for Chroma Power Supply?
    • C
      Connor PowersAug 26, 2025
      If you encounter an Input Error Protection 1 AC FAULT on your Chroma Power Supply, it means that the voltage of the AC input line is either too low or too high. To solve this, measure the input voltage and adjust it if it exceeds the specified limits.
  • A
    Alicia NelsonAug 28, 2025
    What to do if Chroma Power Supply shows Over Voltage Protection (OVP)?
    • P
      plawrenceAug 28, 2025
      If the Chroma Power Supply shows an Over Voltage Protection (OVP) fault, it means the output voltage exceeds the specified limits or the OVP settings. Check the OVP settings. If the protection state cannot be reset, contact your local sales agent for further assistance.
  • L
    lewismadelineAug 30, 2025
    What does D/D FAULT mean on Chroma A620028?
    • K
      keith22Aug 30, 2025
      If the Chroma Power Supply displays a D/D FAULT error, it could be due to a large transient current or damage to the D/D power stage. If a D/D FAULT protection occurs, first turn off the power supply and remove the load. Ensure that the cables are connected correctly, and then power it on again. If the issue persists, contact your local sales agent for further assistance.
  • A
    Amanda WatsonSep 1, 2025
    Why does my Chroma A620028 show 'ERROR!!! MASTER OR SLAVE NO MATCH'?
    • S
      Sean MaldonadoSep 1, 2025
      If your Chroma Power Supply shows 'MATCH warning that the models are incompatible when connected in series or parallel (ERROR!!! MASTER OR SLAVE NO MATCH)', this means the model numbers do not match. Different model power supplies cannot be connected in series or parallel mode. If you need further assistance, contact your local sales agent.
  • M
    Michael SteeleSep 4, 2025
    Why does my Chroma A620028 have no output voltage?
    • L
      Larry LaraSep 4, 2025
      If the Chroma Power Supply is not providing any output voltage, it could be due to abnormal output voltage feedback or damage to the D/D power stage. If the protection state cannot be reset, contact your local sales agent.
  • P
    patricia95Sep 6, 2025
    How to fix Chroma DC Power Supply control issues via GPIB?
    • J
      Judy CarrollSep 6, 2025
      If you are unable to control the Chroma DC Power Supply via GPIB, it could be due to an incorrect address or a loose/disconnected GPIB cable. Update the address and check the cable connection, securing it with screws.
  • J
    John MooreSep 9, 2025
    What does 'Current sharing cable connection error (C/S CABLE ERR.)' mean on Chroma A620028 Power Supply?
    • A
      Allison HuertaSep 9, 2025
      If the Chroma Power Supply displays 'Current sharing cable connection error (C/S CABLE ERR.)', it means the current sharing cable is connected when used in series mode. Check if the cables are connected correctly. Contact your local sales agent for further assistance.

Summary

Safety Summary and Symbols

1. Overview and Specifications

1.2 System Functions

Details the product's operating modes, protection, input signals, measurement capabilities, and front/rear panel functions.

1.3 Specifications

Lists detailed operating specifications, including ratings, noise, response times, and slew rates for various models.

1.4 Function Keys

1.4.1 Front Panel Controls

Describes the function of each key and control on the front panel of the instrument.

1.4.2 Rear Panel Connectors

Details the connectors and indicators located on the rear panel of the instrument.

2. Installation Procedures

2.3 Input Power Requirements and Connections

Details electrical power specifications, ratings, and correct AC power input connections.

2.4 Remote Sensing Configuration

Explains how to correctly connect remote sensing wires to compensate for voltage drops across load cables.

2.5 Output Connection and Wire Specifications

Provides instructions for connecting the load and specifies wire inductance and diameter requirements.

2.6 Power-On Procedure

Details the correct sequence for powering on the instrument and the subsequent self-test operations.

3. Manual Operation and Configuration

3.2 Setting Voltage and Current

Explains how to manually set the output voltage and current using the front panel controls.

3.3 Configuration and Settings

Covers system setup, output configuration, series/parallel modes, display, protection, calibration, remote setup, and output modes.

4. Program Sequence Control

5. Remote Operation and Programming

7. ETHERNET Functions (62020 H-150 S Only)

8. Self Test and Troubleshooting

8.2 Troubleshooting Guide

Provides a table of common problems, causes, and suggested resolutions for the instrument.

Appendix B: List of Protection Messages

Chroma A620028 Specifications

General IconGeneral
BrandChroma
ModelA620028
CategoryPower Supply
LanguageEnglish

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