DRI-62 Drum Rotation Indicator System
The DRI-62 is a drum rotation indicator system designed for mobile cranes, boom trucks, and other hoisting applications that require direct operator feedback on drum movement. The system provides tactile indication of hoisting drum rotation and line travel to support controlled load positioning during lifting operations.
The DRI-62 system consists of a transmitter/sensor assembly and an in-cab indicator, commonly referred to as a thumper.
Features and Benefits
Feature |
Benefit |
|---|---|
| Direct drum movement indication | Provides tactile operator feedback tied to hoisting drum rotation for controlled positioning tasks. |
| Fine and coarse feedback modes | Allows the system response to be matched to precise placement or normal operating conditions. |
| 0.2 in per thump fine mode | Supports higher-resolution feedback for slower, more precise line travel indication. |
| 0.6 in per thump coarse mode | Supports lower-frequency feedback during typical operating conditions. |
| Diagnostic LED indicators | Simplifies setup and troubleshooting by confirming power and pulse-output status. |
| 10–28 VDC transmitter input | Supports integration into common mobile equipment electrical systems. |
| 12 VDC and 24 VDC thumper models | Allows the indicator to be matched to machine electrical requirements. |
| Continuous oscillating thumper at 15 Hz max | Provides repeatable tactile indication during system operation. |
| 75 million operation thumper life | Supports repeated-duty operation in demanding service environments. |
| Stainless steel rotation shaft and mounting bracket | Supports durability and corrosion resistance in exposed equipment installations. |
| Heavy-duty sealed bearings and outer shaft seal | Helps protect the rotating assembly in field use. |
| Multi-slotted reversible bracket design | Supports retrofit flexibility and interchangeability across mounting situations. |
| Optional friction wheel arrangement | Supports direct drum-contact sensing where required by the installation. |
Mounting and Integration
The DRI-62 is designed for installation on hoisting drum systems where direct drum-rotation feedback is required. The transmitter accepts pulsed input from an external sensor and may be supplied as a complete assembly with enclosure cable and friction wheel mounted directly to the hoisting drum. The indicator is installed in the operator environment and provides tactile feedback through a thumper mechanism.
Typical Applications
- Mobile cranes
- Boom trucks
- Hoisting drum monitoring
- Precise load positioning applications
- Building material placement
- Equipment placement operations
- Retrofit drum feedback systems
- Dual-drum configurations
- Winch monitoring applications
FAQs
Q: What does the DRI-62 system measure?
A: The DRI-62 indicates hoisting drum movement by converting drum rotation into tactile operator feedback. It is intended for applications where direct feedback on line movement supports controlled load positioning.
Q: What is the difference between fine and coarse mode?
A: Fine mode indicates 0.2 in of line travel per thump for higher-resolution feedback. Coarse mode indicates 0.6 in of line travel per thump for normal operating situations.
Q: Is the DRI-62 suitable for retrofit applications?
A: Yes. The product information describes a reversible multi-slotted mounting bracket for interchangeability and notes compatibility with dual-drum or winch applications, which supports retrofit and field-integration flexibility.
