GE IC693374-GS

Technical Specifications

• Module Type: High-Speed Counter and Tachometer Module
• Compatible PLC Series: GE Fanuc Series 90-30
• Number of Channels: 2 independent high-speed counter channels
• Maximum Input Frequency:
  • Single-phase (up/down): 200 kHz
  • Two-phase quadrature (90° phase shift): 100 kHz per channel
• Counting Modes:
  • Single-phase: Up/down counting with external direction control
  • Two-phase: Quadrature decoding (X1, X2, X4 resolution)
  • Gated counting: Count enabled only when gate signal is active
  • Period measurement mode: Measures time between pulses
  • Frequency measurement mode: Computes input signal frequency
• Input Signal Types:
  • TTL (5 VDC)
  • 12–24 VDC push-pull or open-collector
• Input Voltage Range: 10–30 VDC
• Input Current: 7 mA typical per input
• Counter Resolution: 32-bit signed integer (range: ±2,147,483,647)
• Encoder Power Supply:
  • +5 VDC isolated output
  • 200 mA maximum current
  • For powering external encoders or sensors
• Digital Inputs:
  • 8 optically isolated inputs for control signals (preset, reset, start, stop, direction override)
  • Input voltage: 12–24 VDC
• Digital Outputs:
  • 8 optically isolated outputs for status and alarm indication (e.g., limit reached, overflow, error)
  • Output type: Sourcing transistor
  • Maximum current: 50 mA per output
• Interrupt Capability: Hardware interrupts on count value match or limit exceed
• Data Transfer: Communicates with PLC CPU via Series 90-30 backplane
• Configuration Method: Set through PLC logic and configuration software (Proficy Machine Edition or Logicmaster)
• Memory: Onboard RAM with non-volatile backup for preset values and configuration
• Isolation: 1500 VAC between field I/O and logic circuitry
• Power Supply: 5 VDC from Series 90-30 backplane
• Backplane Current Draw: 180 mA @ 5 VDC
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Humidity Range: 5% to 95% relative humidity, non-condensing
• Dimensions: 40 mm (W) x 120 mm (H) x 115 mm (D)
• Weight: Approximately 0.4 kg
• Compliance: CE, UL, CSA, RoHS

Functional Features

• Independent Operation: Processes high-speed signals without relying on PLC scan time for accuracy
• Quadrature Decoding: Detects direction and position from A/B phase encoders with X1, X2, or X4 resolution
• Programmable Presets and Limits: Triggers outputs or interrupts when count reaches user-defined values
• Real-Time Diagnostics: LED indicators for power, run/fault status, channel activity, and error conditions
• Encoder Power Supply: Built-in isolated 5 VDC output eliminates need for external power for connected sensors
• Flexible Input Filtering: Adjustable digital filtering to reject electrical noise and contact bounce
• Multiple Measurement Modes: Supports counting, frequency, and period measurement for diverse application needs
• Data Latching: Captures current count value upon external trigger for precise event marking
• Overflow Detection: Flags when count exceeds 32-bit range with automatic error signaling
• Synchronization with PLC: High-speed data exchange with main processor for coordinated control actions

Application Areas

• Speed Monitoring: Measures rotational speed of motors, conveyors, and shafts using tachometers or encoders
• Length and Position Control: Tracks linear travel in cut-to-length machines, printing presses, and web handling systems
• Packaging Machinery: Counts products, monitors sealing cycles, and verifies indexing accuracy
• Process Control: Monitors flow rates using pulse-output flow meters
• Material Handling: Tracks conveyor movement, pallet counts, and elevator position
• Test and Measurement Equipment: Records cycle counts, event frequencies, and machine uptime
• Machine Tools: Interfaces with spindle encoders for RPM monitoring and threading operations
• Energy Management: Integrates with utility meters for pulse-based energy consumption tracking

System Integration

The IC693374-GS installs directly into a Series 90-30 CPU rack and connects via the backplane for power and communication. It is configured using GE’s engineering software such as Proficy Machine Edition or Logicmaster. Counting parameters, presets, and operating modes are set through configuration tables accessible by the PLC program. The main CPU reads counter values, monitors status, and responds to interrupts in real time.

Environmental and Safety Compliance

• Designed in accordance with IEC/EN 61131-2 standards for programmable controllers
• Meets electromagnetic compatibility (EMC) requirements per IEC/EN 61000-6-2 (industrial immunity) and IEC/EN 61000-6-4 (emissions)
• Suitable for industrial environments with protection against electrical transients, noise, and voltage surges

Maintenance and Support

The module requires no routine maintenance. Status LEDs and diagnostic registers enable quick identification of faults or signal issues. Configuration changes and firmware updates are performed through standard programming software. Comprehensive technical documentation, wiring diagrams, and support are available through authorized GE automation partners and service networks.