Code dv2: Z Pulse Noise Fault Detection
Issue Description & Safety Warning
The Yaskawa A1000 AC Drive has triggered a critical Z Pulse Noise Fault Detection 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
Code type: Fault Manual section: Yaskawa A1000 Troubleshooting Electrical signal interference along the PG cable. Separate the PG cable lines from the source of the noise (very possibly drive output wiring). PG cable is not wired properly. Rewire the PG encoder and make sure all shielded lines are properly grounded. PG option card or the PG encoder is damaged. If the problem continues after cycling power, then replace either the PG option card or the PG encoder itself.
Source: Yaskawa AC Drive A1000 High Performance Vector Control Drive Technical Manual (SIEP C710616 21H)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Yaskawa A1000 AC Drive Alarms
Yaskawa controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code dv2 on the A1000 AC Drive identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Yaskawa's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 280 Yaskawa A1000 AC Drive codes.
Have a better solution?
Help the industrial community by sharing your repair experience for code dv2.
Need a searchable reference for more Yaskawa A1000 AC 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