J+J J3C - User Manual

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J3C TYPE ELECTRIC ACTUATOR TROUBLESHOOTING GUIDE
WHAT THIS GUIDE IS, AND HOW TO USE IT
This comprehensive document provides POSSIBLE SOLUTIONS and/or ADVICE for reported
‘faulty’ actuators, and is intended purely as a guide to identify possible causes and
remedies for actuators that are not working as expected.
• Use the index to identify the page in the document most likely to help.
• When a user sends a command signal to an actuated valve and it doesn’t respond, it is
usually automatically assumed that the actuator is faulty. In practice, in most cases, the
fault is either with the valve, or with the electrical system controlling the actuator, and
not the actuator itself.
• This document is intended to help identify where the problem is. J+J are not qualified
electrical, electronic or control engineers and therefore ‘POSSIBLE SOLUTIONS/ ADVICE’
contained in this document are only suggestions and recommendations based on 20 years
of practical experience.
• The warranty on the J3C S Type electric actuator relates to the product itself, and does
not extend beyond those parts supplied. All external equipment/ wiring/ influences are
provided by, and are the sole responsibility of, the customer.
• Errors & omissions excluded and subject to correction when identified.
INDEX
Page No
Symptom or description
1
How to use this guide & Index
2
LED light
3
LED not lit, actuator doesn’t work
4
LED lit solidly but actuator doesn’t work
4
LED flashing and actuator doesn’t work
5 & 6
Electronic Torque Limiter engaged
7 & 8
Manual Override Engaged
9
LED flashing when the actuator is NOT fitted to valve
10 & 11
PCB Issues
11
Actuator drives continuously
12
Failsafe function issues (BSR installed)
13
Modulating function/ positioner issues (DPS installed)
14
Modulating function/ positioner soft reset
14 & 15
Modulating function/ positioner fault finding
16
DIN plug issues
17
Housing Issues
18
Most common causes of ‘malfunctions’
18
Information needed to report a ‘faulty’ actuator

J+J J3C Specifications

General

Brand	J+J
Model	J3C
Category	Controller
Language	English

Summary

LED Status and Troubleshooting

LED Not Lit, Actuator Not Working

Troubleshooting guide for when the actuator's LED is not lit and it does not function.

LED Lit Solidly, Actuator Not Working

Diagnosing issues when the actuator's LED is lit solidly but the actuator remains non-functional.

LED Flashing, Actuator Not Working

Troubleshooting when the actuator's LED flashes and the unit does not operate.

Electronic Torque Limiter (ETL)

ETL Activated Causes and Solutions

Guidance on what to do when the actuator's LED flashes due to the electronic torque limiter engaging.

Manual Override (MO) Functionality

MO Activated Issues and Misuse

Troubleshooting steps for when the actuator is in Manual Override mode, indicated by LED flashing.

Actuator Without Valve Issues

Motor Issues Causing LED Flashing

Diagnosing motor problems that cause LED flashing when the actuator is not connected to a valve.

Printed Circuit Board (PCB) Problems

PCB Damage, Condensation, and Water Ingress

Identifying causes of actuator failure related to PCB damage, condensation, water ingress, or voltage issues.

Actuator Continuous Operation Faults

Actuator Runs Continuously Without Stopping

Troubleshooting why the actuator continues to run without stopping, including causes like vibration or faulty switches.

Failsafe (BSR) System Issues

Failsafe (BSR) Installation and Battery Problems

Resolving problems related to the installation and battery performance of the Failsafe (BSR) function.

Modulating (DPS) Positioner Functionality

Modulating (DPS) Installation Problems

Troubleshooting incorrect installation of the Modulating (DPS) function, including wiring and connection errors.

DPS Positioner Soft Reset Procedure

Steps to perform a soft reset on the DPS positioner to resolve calibration or software issues.

Diagnosing DPS Positioner Performance Issues

Identifying common causes of poor performance in the DPS positioner, focusing on signal issues.

DIN Plug Connectivity and Wiring

Common DIN Plug Wiring and Installation Issues

Addressing common problems with DIN plugs, including incorrect wiring, damaged cables, and seal fitting.

Housing and Environmental Integrity

Housing Ingress Protection and Component Issues

Resolving common housing problems like water ingress and issues arising from manual override lever removal.

Common Malfunction Causes and Reporting

Key Causes of Actuator Malfunctions

A summary of the most frequent reasons for actuator malfunctions, including manual mode, torque limiter, wiring, and signal issues.

Required Information for Fault Reporting

Details needed from users when reporting a faulty actuator to ensure efficient support.