Code DRV-211: Safety Brd Fault
Issue Description & Safety Warning
The Allen-Bradley PowerFlex 750 Drive has triggered a critical Safety Brd Fault 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: Resettable Fault Coast Bit 8 “Board Faults” A Safety option module has indicated a fault. Verify that ENABLE Jumper is installed. Reset or power cycle drive. Safe Speed Monitor (20-750-S1): • See P67 [Fault Status] on page 303 for more information on the fault statuses. • See publication 750-RM001 for more information. Safe Torque Off (20-750-S): • If DC power drops below 17V DC “Not Enable” is indicated. • If voltage drops below 11V DC the module faults. • See publication 750-UM002 for more information. ATEX (20-750-ATEX): • Possible hardware damage. • The motor to the thermal sensor is shorted. • Excessive EMC noise due to improper grounding/shielding. • See publication 750-UM003 for more information.
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-211 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.
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