Lenze i300 Servo Drive Repair - Food & Beverage, Mumbai
Fault Analysis
The Problem
CAN bus communication timeout error codes 2080, 2081, 2082 appearing intermittently every 15-20 minutes
Sporadic loss of servo motor motion control during high-speed conveyor acceleration commands
Dry joint failures on CAN termination resistor network (RN4 - 120 ohm resistors) confirmed via magnification inspection
Signal reflection and impedance mismatch observed on CAN_H and CAN_L differential pair during oscilloscope analysis
Thermal cycling-induced solder joint degradation from steam and moisture exposure in food processing environment
Money Saved
Cost Savings Breakdown
What this customer saved by repairing instead of buying new
* Govt. taxes extra as applicable · Shipping charges extra as applicable on the repair quote.
This Repair's Journey
From Inquiry to Delivery
Completed in 60 hours
Inquiry Received
Equipment details logged, initial assessment scheduled
Diagnosis & Evaluation
Component-level fault analysis with detailed report
Repair Work
Expert component-level repair using OEM-grade parts
Testing & QC
Full-load testing under operating conditions, QA sign-off
Delivery & Warranty
Dispatched with test report and 6-month warranty
Inquiry Received
Equipment details logged, initial assessment scheduled
Diagnosis & Evaluation
Component-level fault analysis with detailed report
Repair Work
Expert component-level repair using OEM-grade parts
Testing & QC
Full-load testing under operating conditions, QA sign-off
Delivery & Warranty
Dispatched with test report and 6-month warranty
Technical Details
Our Repair Approach
CAN Bus Network Analysis
Oscilloscope and CAN analyzer testing performed to capture signal waveforms and confirm intermittent impedance failures at CAN termination resistor points.
Dry Joint Identification and Magnification Inspection
40x optical microscopy confirmed void-filled and cold solder joints at RN4 resistor array (CAN_H and CAN_L lines), typical of thermal cycling stress in high-moisture environments.
Precision BGA Rework and Reflow
Temperature-profiled reflow soldering performed on RN4 resistor network with full solder joint wetting validation per IPC-A-610 Class 2 standards and post-rework inspection at 40x magnification.
Firmware Update and CAN Configuration Validation
Drive firmware updated to version 1.09, CAN node ID (03) and baud rate (250 kbps) re-validated and synchronized with customer's network topology documentation.
Functional and Burn-In Testing
500 consecutive CAN message cycles executed without timeout; servo axis acceleration/deceleration profiles tested under simulated load; 8-hour burn-in completed under production-representative servo commands.
Signal Quality Verification and Final Commissioning
Post-repair oscilloscope analysis confirmed clean differential CAN signals (2V peak-to-peak, <50ns rise time, zero reflection artifacts), drive packaged with calibration certificates and 6-month warranty.
Mission Accomplished
The Result
The repaired servo drive was reinstalled and commissioned within 60 hours of receipt, restoring full production capacity. The customer saved INR 60,000 (61% cost reduction vs OEM replacement price of INR 1,00,000) while achieving rapid operational recovery, avoiding estimated INR 2,50,000 in production penalties and lost revenue.
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