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 (without gasket)
  (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

Typical Installations

• 70 m Yacht MY Amadeus