ABB RHD250 User Manual (English)

Questions and Answers:

C
Cynthia FranklinAug 12, 2025
Why are the LEDs flashing alternately on my ABB RHD250 Controller?
- R
  Robin MccallAug 12, 2025
  If the LEDs in the commissioning and service panel (CSP) of your ABB Controller flash alternately, it indicates an electronic unit or drive failure. To address this, drive the actuator beyond the adjusted end position manually or using the push buttons on the CSP. If necessary, disconnect it from the valve or damper. Then, drive the actuator back into the operating range and reconnect it to the valve or damper. Finally, readjust the operating range.
K
Kelly JohnsonAug 19, 2025
What to do if ABB Controller actuator doesn't run in AUT mode?
- J
  Jordan HartAug 19, 2025
  If the ABB Controller actuator does not run in AUT mode, even though “AUT” is selected in the user interface, it could be due to Binary input 1 (BE 1) not being wired. Make the connection and check the software settings for the binary inputs.
B
brandongonzalezAug 25, 2025
How to fix synchronously flashing LEDs on ABB RHD250 Controller?
- P
  pettymelissaAug 26, 2025
  If the LEDs in the commissioning and service panel (CSP) of your ABB Controller flash synchronously, it indicates that the actuator is not adjusted properly. Adjust the actuator to resolve this issue.
D
Daniel BakerAug 31, 2025
What to do if ABB RHD250 actuator cannot move the valve?
- R
  randy44Aug 31, 2025
  If the ABB Controller actuator cannot move the valve, it could be due to a failure either at the actuator or at the final control element, such as a stuffing box tightened too much. To determine the cause, detach the actuator from the valve. If the actuator moves, the valve is the likely cause. If the actuator does not run, the actuator is the likely cause.

ABB RHD250 Specifications

General

Brand	ABB
Model	RHD250
Category	Controller
Language	English

Summary

Safety

General Safety Information

Overview of safety aspects to be observed for the operation of the device.

Technical Limits

Specifies operational limits and values on the name plate and in technical specifications.

Labels and Symbols

Explains symbols and warning labels used throughout the manual.

Personnel Qualification

Specifies requirements for personnel performing installation and maintenance.

Disposal

Information on product disposal and WEEE directive compliance.

Installation Safety Information

Safety precautions for mounting and adjusting the actuator.

Electrical Installation Safety Information

Safety measures to be observed for electrical connections.

Operating Safety Information

Safety notes to be observed during the operation of the actuator.

Maintenance Safety Information

Safety precautions to be taken during maintenance activities.

Design and Function

Installation

Actuator Check

Checks to perform before installing the actuator.

Mounting Position

Permissible mounting orientations and space requirements.

Installation Instructions

General instructions for actuator installation.

Assembly with the Valve

Steps for assembling the actuator with the valve.

Stop Adjustment Procedures

Procedures for adjusting travel and torque limit stops.

Mounting Examples

Examples of mounting, including fastening elements.

Mounting with Lever

Diagram and notes for mounting with a lever.

Installation with Additional Drive Elements

Installation conditions for additional drive elements.

Dimensioned Drawings

Detailed drawings for various actuator components.

Lever for RHD250

Dimensioned drawing for the lever for RHD250.

Lever RHD500 ... RHD800

Dimensioned drawing for levers for RHD500 and RHD800.

Lever for RHD1250 ... RHD2500

Dimensioned drawings for levers for RHD1250 and RHD2500.

Lever for RHD4000

Dimensioned drawings for the lever for RHD4000.

Electrical Connection

Cable Shielding

Instructions for fitting the cable shield for signal parts.

Terminal Connection Diagrams

Diagrams for connecting Contrac electronic units (Analog/Digital, PROFIBUS, etc.).

Operation

Automatic / Manual Mode

Explanation of automatic and manual operating modes.

Manual Operation

Procedure for manual operation of the actuator.

Maintenance

Inspection and Overhaul

Guidelines for inspection and overhaul intervals and measures.

Brake Adjustment

Information regarding brake adjustment.

Oil Change

Procedure and oil types for changing the actuator oil.

Filling Capacity

Details oil filling capacities for different actuator models.

Trouble Shooting

Electrical Test Values

Table of winding resistance values for motors and brakes.

Technical Data

General Information

General technical specifications and operating modes.

Technical Data RHD250

Detailed technical specifications for the RHD250 model.

Technical Data RHD500...RHD800

Detailed technical specifications for RHD500 and RHD800 models.

Technical Data RHD1250...2500

Detailed technical specifications for RHD1250 and RHD2500 models.

Technical Data RHD4000

Detailed technical specifications for the RHD4000 model.

Appendix

Permits and Certifications

Information on CE mark compliance and directives.

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