What to do if the MSA General Monitors FL4000H Safety Equipment analog output signal is 2 mA and the green LED is slowly blinking?
If the analog output signal is 2 mA (or 3.5 mA with HART and small current disabled) and the green LED is slowly blinking, this indicates a COPM FAULT, possibly due to a dirty or obscured optical path. Clean the window and reflector to resolve this issue.
Why is the green LED rapidly blinking on my MSA Safety Equipment and the analog output signal is 0 mA even with verified +24 VDC?
If the green LED is rapidly blinking and the analog output signal is 0 mA (3.5 or 1.25 mA with HART), even after verifying +24 VDC, the issue might be a Flash Checksum error. Try re-cycling power to the unit to resolve this.
What to do if dipswitch settings on MSA General Monitors FL4000H Safety Equipment don't match the detector's operation?
If the dipswitch settings do not match those observed in the operation of the detector, it is possible that the device settings have been changed by either HART or Modbus and no longer correspond to those on the dipswitch. Recycle power to the unit while connecting the test IO terminal to ground. After startup, adjust settings via dipswitch.
Why is the green LED rapidly blinking on my MSA General Monitors FL4000H Safety Equipment and the analog output signal is 0 mA?
If the green LED is rapidly blinking and the analog output signal is 0 mA (3.5 or 1.25 mA with HART), it suggests a low voltage FAULT. Ensure the unit is powered with at least +24 VDC under load, as the voltage at the unit is approximately +18.5 VDC.
How to troubleshoot MSA General Monitors FL4000H when the analog output signal is 0 mA and the green LED is off?
If the analog output signal is 0 mA and the green LED in the window is off, it indicates that there is no DC power to the unit. Ensure that the +24 VDC is applied with the correct polarity.
General| Model | FL4000H |
|---|---|
| Gas Detection | Yes |
| Humidity | 0 to 95% RH, non-condensing |
| Power Supply | 24 VDC |
| Output | 4-20 mA |
| Approvals | ATEX, IECEx |
| Housing Material | Stainless steel |
| Ingress Protection | IP66 |
| Display | LCD |
| Communication | RS-485 |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
Instructions for physically attaching and connecting the detector unit.
Steps for connecting power, initial power-up, and functional testing procedures.
Verifying system integrity and proper setup before initial operation.
Verifying system integrity and proper setup before initial operation.
Specifies environmental and usage conditions for safe and effective operation.
Definitions of technical terms and abbreviations used in the manual.
High-level introduction to the FL4000H detector, its technology, and key features.
Lists applications and explains how the detector works using IR sensors and ANN processing.
Describes the self-testing feature that monitors the optical path for obstructions.
Details how to activate test mode to verify detector response without a flame.
Guidance on unpacking, lists necessary tools, and recommends optimal placement.
Details detection range, angles, and how sensitivity affects detection distance.
Procedures for physically mounting, installing, and connecting the detector's wiring.
Details on connecting alarm, warning, fault relays, and the analog output.
Configuration of detector settings via dipswitches, including time delays and power-up.
Overview of Modbus, slave address, baud rate, data format, and read protocols.
Explains error codes and lists Modbus registers for device control and status.
Reading error status, controlling dipswitch override, and managing device options via Modbus.
Setting communication parameters like baud rate and data format for channels 1 and 2.
Remotely resetting relays, initiating tests, and monitoring communication errors via Modbus.
Index for reading logged events and resetting event counters via Modbus.
Basic maintenance recommendations and procedure for cleaning the detector's optical window.
Table of common problems, causes, and corrective actions, plus a unit cross-section diagram.
Contact information for offices worldwide and links to additional documentation.
Details warranty coverage and technical specifications including response time and materials.
Electrical characteristics, operating ranges, and maximum cable lengths for the detector.
Details on approvals, certifications, classifications, and response to non-flame sources.
List of available spare parts and accessories, including details on the TL105 Test Lamp.
Instructions for recharging the test lamp, and details on mounting bracket and rain guard accessories.
Notes on hazardous substances and disposal regulations.
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