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ABB ATS021 - User Manual

ABB ATS021
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Automatic transfer switch ATS021
Installation and operating instructions
34ATS021 / 1SDH000759R0002

Questions and Answers

  • B
    bnguyenAug 12, 2025
    What to do if I see ALARM_OPEN_1 on my ABB Switch?
    • D
      Dylan ClarkAug 13, 2025
      If you're encountering ALARM_OPEN_1 with your ABB Switch, try resetting it using the RESET key. However, if the alarm persists, it indicates a potential malfunction within the protection device, necessitating its replacement.
  • R
    Ryan SuarezAug 16, 2025
    What to do if I see ALARM_OPEN_2 on my ABB ATS021 Switch?
    • L
      Lisa WilliamsAug 16, 2025
      In case of ALARM_OPEN_2 on your ABB Switch, attempt to reset the system using the RESET key. Should the alarm continue, it suggests a fault in the protection device, which would then require replacement.
  • S
    Sherry MooreAug 20, 2025
    What to do if I see ALARM_CLOSE_1 on my ABB Switch?
    • C
      Christopher MoralesAug 20, 2025
      If your ABB Switch displays ALARM_CLOSE_1, you can attempt to clear it by using the RESET key. If the alarm remains active after the reset, it means that the protection device may be defective and needs to be replaced.
  • S
    Sherri HorneAug 25, 2025
    What to do if I see ALARM_CLOSE_2 on my ABB ATS021?
    • P
      Pamela SmithAug 25, 2025
      When ALARM_CLOSE_2 appears on your ABB Switch, your first step should be to reset it using the RESET key. If the alarm doesn't go away after resetting, it points to a possible problem with the protection device, meaning it should be replaced.
  • S
    Shannon JensenAug 28, 2025
    What to do if Closure 1 Alarm occurs on my ABB ATS021 Switch?
    • M
      Megan McdowellAug 28, 2025
      If a Closure 1 Alarm occurs, you can try resetting the alarm using the RESET button. However, if the alarm persists after resetting, it is likely that there is a malfunction within the protection switch.
  • A
    Angela GreeneAug 31, 2025
    What to do if Closure 2 Alarm occurs on my ABB ATS021?
    • J
      Justin BrownAug 31, 2025
      If a Closure 2 Alarm appears, attempt to reset it using the RESET button. If the alarm doesn't clear after resetting, it probably indicates a malfunction in the protection switch.
  • M
    marcus25Sep 4, 2025
    What to do if Opening 1 Alarm occurs on my ABB Switch?
    • M
      Mario RiceSep 4, 2025
      In the event of an Opening 1 Alarm, you can attempt to reset the alarm by pressing the RESET button. If the alarm continues, it suggests a potential malfunction in the protection switch.
  • B
    Brenda ThompsonSep 8, 2025
    What to do if Opening 2 Alarm occurs on my ABB Switch?
    • H
      hannahhendricksSep 8, 2025
      If an Opening 2 Alarm is triggered, the alarm can be reset using the RESET button. If the alarm isn't cleared, it may indicate a malfunction in the protection switch.

Summary

Safety Notes

ATS021 Functions

Description

Automatic Functions

Describes the automatic switching sequences between Line 1 and Line 2, including delays and generator control.

Parameter Settings

Operating

Manual Mode Operation

Guides on selecting and operating the ATS021 in Manual Mode using the Lim rotary switch.

Automatic Mode Operation

Explains how to select and operate the ATS021 in Automatic Mode via the Lim rotary switch.

Installation

Parameter Configuration

Details how to set ATS021 parameters using DIP switches and rotary switches.

DIP Switch Parameter Settings

Explains parameter configuration using DIP switches S23 (voltage, frequency) and S24 (neutral, phase).

Mounting the ATS021

Connecting the ATS021

Power Circuit Connection

Covers operating voltage, frequency, and phase settings for connecting the power circuit.

Control Circuit Diagram and Explanation

Presents a detailed diagram and explanation of the ATS021's control circuit connections.

ATS021 Connectors, Outputs, and Inputs

Troubleshooting

ABB ATS021 Specifications

General IconGeneral
BrandABB
ModelATS021
CategorySwitch
LanguageEnglish

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