Logopak Error Codes Site

| Error Code | Description | Likely Causes | Immediate Actions | | :--- | :--- | :--- | :--- | | | Label web sensor out of range | Analog sensor reading below min or above max threshold | Re-teach sensor (auto-calibrate). Replace if failed. | | E-S-403 | Ribbon end sensor activated | Ribbon supply core has stopped turning | Replace ribbon. Check that supply hub rotates freely. | | E-S-502 | Emergency stop circuit open | E-stop button pressed, door open, or safety relay tripped | Release all E-stops. Close guard doors. Acknowledge safety relay. | | E-S-601 | Encoder signal missing | No A/B channel signal from conveyor encoder | Check encoder cable shield. Verify 5V/24V supply. Replace encoder. | Category 2.4: Communication & Network Errors (C-Codes) Common in integrated lines with PLCs (Siemens, Rockwell) or MES systems.

| Error Code | Description | Likely Causes | Immediate Actions | | :--- | :--- | :--- | :--- | | | Tamp cylinder time-out | Tamp did not extend/retract within allowed time (e.g., 0.5 sec) | Check air pressure (min 5 bar). Check pneumatic valve. Look for mechanical obstruction. | | E-L-012 | Blow-on air pressure low | Vacuum/blow pressure below threshold for label transfer | Check compressed air supply. Clean blow nozzles. Adjust regulator. | | E-L-105 | Label missing after application | Label peeled from liner but not applied to product | Static electricity issue. Product gap too large. Check blow delay timing. | | E-L-203 | Product sensor timeout (no product) | Product trigger sensor not activated within window | Adjust product sensor (photocell/ultrasonic). Check wiring. | | E-L-207 | Product speed mismatch | Encoder pulse frequency mismatch between conveyor and labeler | Check encoder wheel contact. Re-calibrate speed ratio. | Category 2.3: Sensor & I/O Errors (S-Codes) Errors from external devices, safety circuits, or internal feedback. Logopak Error Codes

However, like any sophisticated electromechanical system, Logopak labelers and printers are prone to errors. When a Logopak machine halts with an error code, it is not a sign of failure but a sophisticated diagnostic tool. Understanding these codes is critical for minimizing downtime, avoiding mislabeling (which can lead to regulatory fines), and maintaining Overall Equipment Effectiveness (OEE). | Error Code | Description | Likely Causes

| Error Code | Description | Likely Causes | Immediate Actions | | :--- | :--- | :--- | :--- | | | Print head over temperature | High ambient temp, excessive print darkness, insufficient cooling | Stop machine, let cool. Reduce print contrast in settings. | | E-P-203 | Ribbon foil break | Ribbon snapped, incorrect threading, empty ribbon core | Reload ribbon. Check for nicks on ribbon edge. | | E-P-204 | Ribbon foil jam | Ribbon stuck between print head and platen roller | Open print head. Remove wrinkled ribbon. Clean platen. | | E-P-301 | No label stock detected | Label web broken, empty roll, sensor misaligned | Reload labels. Clean the label gap sensor (usually a green LED). | | E-P-302 | Label gap not found | Wrong label pitch in software, sensor dirty, transparent liner | Re-teach label length. Clean sensor. Use black mark sensor instead of gap. | | W-P-305 | Label roll low (early warning) | Approaching end of roll | Prepare new label roll for splice or change. | | E-P-401 | Print head lift (safety) | Print head opened during operation | Close and lock print head. Check safety microswitch. | | E-P-707 | Invalid print job data | Corrupted label format, memory overflow | Re-download label format. Reboot controller. | Category 2.2: Label Application Errors (L-Codes) These involve the mechanical applicator (tamp, blow, wipe, or corner wrap). Check that supply hub rotates freely

Introduction Logopak, a German-based subsidiary of the American giant Dover Corporation, is a world-leading manufacturer of labeling and coding systems. Their portfolio includes print-and-apply labelers, stand-alone label dispensers, and high-performance inkjet printers (such as the Logopak E-Series, 8000 Series, and the newer C-Series). These machines are the backbone of supply chain logistics, product identification, and traceability in industries ranging from food and beverage to pharmaceuticals and automotive.

| Error Code | Description | Likely Causes | Immediate Actions | | :--- | :--- | :--- | :--- | | | Ethernet link down | Cable unplugged, switch failure, IP conflict | Check physical connection. Ping the Logopak IP. Renew DHCP or set static IP. | | E-C-203 | Profibus DP slave timeout | Cyclic communication lost with master PLC | Check bus terminator. Verify GSD file. Monitor bus status LED. | | E-C-304 | Invalid command from host | Unexpected ASCII or binary command received | Check serial/Ethernet protocol settings. Ensure correct start/stop bits. | | W-C-401 | USB drive not formatted | USB stick inserted with wrong file system (not FAT32) | Reformat USB drive to FAT32. Use Logopak-approved USB brands. | Category 2.5: Data & Software Errors (D-Codes) Firmware, configuration, or memory issues.