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CSL Part Number: 83467
Product Overview: The Rockford MS4420R-NL (also designated LBR420) is a photo-electric light curtain used for presence sensing and safety applications in industrial machinery. It creates an invisible infrared beam pattern that detects when an object or person enters a protected zone, triggering a stop signal to prevent accidents. This system is commonly deployed as machine guarding on presses, automated assembly lines, and material handling equipment. The device consists of transmitter and receiver units that work with a control box to monitor the sensing field and provide safety-rated outputs for machine control integration.
Category: Light Curtain
Manufacturer: Rockford
Manufacturer Part Number: MS4420R-NL [LBR420]
We need the transmitter, receiver, controller and interconnecting cables in order to test and repair.
Common Failures
This product may experience a situation where all indicator lights remain on without clearing. This issue is frequently suspected to originate from within the control box.
Repair Approach
We can evaluate the unit to determine the root cause. Diagnostic testing typically involves verifying power to all sensors and conducting an in-depth evaluation. If the issue is confirmed to be within the control box, we will provide a quotation before any repair work begins. Some units may require evaluation at our facility rather than on-site.
Testing & Quality
Power testing and component evaluation are conducted following repair to confirm functionality. Our warranty covers components replaced during the repair process in accordance with CSL warranty policy.
Repair your broken Rockford part
We can repair your Rockford model MS4420R-NL [LBR420] .
Please note: our repair turnaround time may be longer than our standard lead times for this item.
Step 1 -
Click the green button above, "Repair Now," and add to your RMA.
Step 2 -
Print the RMA form that is emailed to you, and put it in a box with the parts for repair.
Step 3 -
Mail the box to the address on the RMA.
You will be sent an authorization for repair via email. Your approval is needed before any work is started.
Once the user has seen at least one product this snippet will be visible.