Even robust industrial scales require care. The following table outlines common issues and their solutions, derived from standard industrial practices:
Understanding the technical boundaries of your WB900 is fundamental to proper operation. The terminal is built to stringent international standards. lahti precision wb900 kayttoohje best
DE017985 EN V4.3 WA-plan 900 Ser | PDF | Calibration - Scribd Even robust industrial scales require care
: Poistu huoltotilasta ja palauta kalibrointikytkin lukituskantaan. Vianmääritys (Troubleshooting) DE017985 EN V4
: The signal from the load cell array has dropped below the calibrated zero baseline. Inspect the system for physical binding or a disconnected load cell cable.
| Specification | WB-900 | WB-902 | |------------------------|---------------------------------------------|---------------------------------------------| | | General‑purpose weighing indicator. | Advanced piece counting & data logging. | | EC Type Approval | ✅ 10 000e OIML III, EN 45501. | ✅ Same high precision. | | Internal Resolution | Up to 2 000 000 (1 s measuring time). | Same. | | Keyboard | Function keys only. | Full numerical keypad + menu LCD. | | Tare Memories | Basic preset tare. | 10 tare memories. | | Product Codes | Not available. | 2 × 10 product codes (with tare). | | Totalising Counters | 1 basic counter. | 10 totalising counters. | | Time/Date Logging | No. | Yes (consecutive number + timestamp). | | Display | LED digits. | LCD menu display. | | Interfaces | RS‑232C, RS‑485, current loop, analog out, 4 inputs / 4 outputs. | Same, plus printer connection. |
| Error Code / Issue | Likely Cause | Solution | | :--- | :--- | :--- | | | No power | Check the power adapter connection. Check the fuse in the plug. | | "-----" or Error 1 | Overload | Remove weight immediately. You have exceeded the max capacity (Max: usually 900g for WB900 models). | | Unstable readings (Drifting) | Drafts/Vibration | Close draft shield doors. Turn off nearby fans. Ensure the table is stable. | | Incorrect readings | Needs leveling | Re-level the balance using the adjustable feet and bubble vial. | | | Needs Calibration | Perform the calibration procedure (Section 4). |