Type 8550-1900 CAT PWM COMMAND MODULE

The Type 8550-1900 Cat PWM Command Module is used to provide an engine throttle signal or basic control logic for Cat electronic engines. It accepts a standard analog input and outputs a variable-duty-cycle, pulse-width-modulated signal (PWM). The duty cycle of the signal determines the desired speed of the engine.

APPLICATIONS

  • Simple control system for vessels with CAT electronic engines driving fixed pitch propellers
  • CAT pulse width modulated (PWM) throttle signal conditioner

FEATURES

  • Potentiometer input
  • 4 to 20 mA input
  • Pulse width modulated output
  • Open collector outputs
  • ModBus RTU
  • Switch selectable RS-232, RS-422 or RS-485 communication
  • Switch selectable communication termination
  • Dual 12 VDC or 24 VDC nominal power supplies
  • Status LEDs indicate data transfer
  • Status LED for watch dog
  • Diagnostic LED flashes error codes
  • Removable terminal blocks
  • TS 35 x 7.5 rail mount

Specifications

Supply:

  • Nominal 12 VDC, or 24 VDC 
  • Nominal 12 VDC range 9 to 36 VDC
  • Nominal 24 VDC range 18 to 36 VDC
  • Reverse voltage protection
  • Nominal 50 mA, peak 150 mA

Environmental:

  • Operating temperature -25 to +70°C
  • Storage temperature -40 to +85°C
  • Vibration: Frequency range 2 to 100 Hz
    Peak to peak amplitude 2 mm below 13.2 Hz
    Acceleration amplitude 0.7 g above 13.2 Hz
  • CE compliant for EMC (IEC/EN60945)

Physical:

  • IP40 case (NEMA Type 1)
  • Dimensions:
    90 mm L 75 mm W 55 mm H
    (3.54" L 2.95" W 2.17" H)
  • Weight, typical 0.15 kg (0.32 lbs)
  • Removable terminal blocks for 14 to 20 AWG wires

Diagnostics:

  • Watchdog LED
  • Open collector output for fault
  • Diagnostic fault LED flashes error codes
  • Tx & Rx activity LEDs
  • ModBus RTU Slave access to fault codes, operating data and configuration

Inputs / Outputs:

  • Command potentiometer 2.5 kW or 5 kW
  • Command 4 to 20 mA
  • Pulse Width Modulated 500 pulses per second (PWM)
  • Open collector outputs 1 A @ 24 VDC
  • ModBus RTU
  • Communication RS-232 / RS-422 / RS-485

Downloads

Type 8550-1900 Cat PWM Command Module Product Bulletin SB-8550-1900

Typical Installations

   


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