Code DRV-175: Travel Lim Cflct
Issue Description & Safety Warning
The Allen-Bradley PowerFlex 750 Drive has triggered a critical Travel Lim Cflct alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Type: Non-Reset Fault Current Limit Stop Travel limits are in conflict. Both the forward and reverse travel limits indicate that they are simultaneously active. If digital limits (hardware signals) are in use, ensure that the following forward and reverse digital input pairs are not both off simultaneously: fwd/rev decel travel limit digital inputs and fwd/rev end stop travel limit digital inputs. The travel limit digital inputs are meant to be connected to normally closed switch contacts, so the digital input status reads an off (0 = False) bit status when the machine is on limit and the switch contact opens. A possible cause for this condition is loss of common power to both the forward and reverse travel limit switches. If software travel limits are in use, check the state of the fwd/ rev travel limit bits in P1101 [Trq Prove Setup]. These bits read an on (1 = Enabled) bit status when the machine is on limit. Bit 2 “Decel Fwd” and Bit 4 “Decel Rev” should not be on simultaneously. Similarly, Bit 3 “End Stop Fwd” and Bit 5 “End Stop Rev” should not be on simultaneously.
Source: Allen-Bradley PowerFlex 750-Series AC Drives Programming Manual (750-PM001)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Allen-Bradley PowerFlex 750 Drive Alarms
Allen-Bradley controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code DRV-175 on the PowerFlex 750 Drive identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Allen-Bradley's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 663 Allen-Bradley PowerFlex 750 Drive codes.
Have a better solution?
Help the industrial community by sharing your repair experience for code DRV-175.
Need a searchable reference for more Allen-Bradley PowerFlex 750 Drive manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026