Below is a table of common Unidrive faults found within the Control Techniques Unidrive series, more specifically, the UNI1405. MRO Electric offers core credit on exchanges for new and refurbished units, and have a wide selection of option cards such as the UD51, UD73, and UD77. We also repair Unidrives in-house. Contact us if you are interested in finding a new machine so we can keep your downtime to a minimum!
| HF81 | Software Error (odd address word) |
| HF82 | Large option module removed |
| HF83 | Power Board Code Failure |
| HF84 | Current Offset Trim Failure |
| HF85 | A to D failure (ES-CC step) |
| HF86 | Interrupt Watchdog failure |
| HF87 | Internal ROM check error |
| HF88 | Watchdog Failure |
| HF89 | Unused Interrupts (nmi as source) |
| HF90 | Stack Overflow |
| HF91 | Stack Underflow |
| HF92 | Software Error (undefined op code) |
| HF93 | Software Error (protection fault) |
| HF94 | Software Error (odd address word) |
| HF95 | Software Error (odd address inst.) |
| HF96 | Software Error (illegal ext bus) |
| HF97 | Level 1 Noise |
| HF98 | Interrupt Crash |
| HF99 | Level 1 Crash |
Updated on March 1, 2023 by Joe Kaminski
How to solve failt cod Tr-Hf 07