Overview
The Giddings & Lewis 502-03840-23 is a servo encoder module engineered for integration with the PiC900 programmable industrial computer platform. This card-edge module delivers analog signal conversion and encoder input monitoring for closed-loop servo motor and motion control systems. Built for reliability in machine tool control and precision automation, the 502-03840-23 supports both quadrature and pulse-mode encoder inputs.
Key Features
- 3 Analog Outputs: 10mA maximum at ±10V for servo command signal generation
- 2 Encoder Inputs: Support 2.5–7.0 Vdc logic levels with quadrature and pulse modes up to 500 kHz
- Dual DC Logic Inputs: 15–30 Vdc compatible for mode selection or auxiliary control
- High-Speed Quadrature Processing: 250 kHz quadrature and 500 kHz pulse-mode capability
- Compact Card-Edge Form Factor: Direct PiC900 backplane mounting
- Made in the U.S.A.: Quality-assured industrial-grade component
Technical Specifications
- Module Type: Servo Encoder Module
- Part Number: 502-03840-23
- Platform: Giddings & Lewis PiC900 Programmable Industrial Computer
- Analog Output Channels: 3
- Analog Output Range: ±11 V
- Analog Output Current: 10 mA max @ ±10V
- Encoder Input Channels: 2
- Encoder Input Voltage: 2.5–7.0 Vdc max
- Encoder Input Current: 2.5 mA min @ 2.5 Vdc
- Quadrature Max Frequency: 250 kHz
- Pulse Max Frequency: 500 kHz
- DC Input: 2 channels, 15–30 Vdc
- Operating Ambient Temperature: 0–55°C
- Weight: 630 grams (1.40 lbs)
- Mounting: PiC900 backplane card-edge connector
- Origin: Made in the U.S.A.
Typical Applications
- Closed-loop servo motor control systems
- Multi-axis CNC machine tool motion control
- Rotary encoder feedback and position monitoring
- Precision industrial automation and motion coordination
- Giddings & Lewis machine tool retrofit and upgrade
- Legacy PiC900-based control system expansion
Compatibility & Replacements
Compatible With
- Giddings & Lewis PiC900 programmable industrial computer
- PiC900 7-slot and 13-slot chassis racks (503-18009-03R2, 503-18011-03R2)
- Giddings & Lewis servo drive modules (DSM series)
- Standard quadrature incremental encoders
- Absolute and incremental rotary transducers with logic-level outputs
Replaces / Drop-In Replacement For
- 502-03840-04 (earlier revision)
- 502-03840-23R1 (earlier revision)
- 502-03840-23R2 (variant)
Works With
- Giddings & Lewis PiC900 Hardware Manual (Document 108-31043-00)
- PiC900 motion control programming environment
- Standard industrial incremental and absolute encoders
- 5 Vdc and 12 Vdc logic encoder outputs
- Analog servo amplifiers accepting ±10 V command signals
