AHD 514 S

Safety System with Combined Emergency Stop System for Propulsion Diesel Engines

AHD 514 S is a microprocessor-controlled device comprising all safety functions, predetermined by classification societies, for monitoring systems for propulsion diesel engines with individual adaption to type series of different engine manufacturers.

Product Features

  • Profile module for installation on standard profile rails in consoles, control panels or control cabinets
  • Degree of protection IP 20
  • 2 separated 24 V DC power supplies for emergency stop circuit and safety system
  • Emergency stop function independent from safety function
  • Separate processing of emergency stop inputs and stop criteria
  • An initiated emergency stop is routed directly to the emergency stop output
  • Acquisition of safety relevant (redundant) sensors independent from alarm system AHD 514 A
  • 2 independent binary emergency stop inputs, wire-breakage monitored
  • 5 binary inputs, wire-breakage monitored, for stop criteria
  • 5 binary inputs for control functions (alarm acknowledgement, reset, overspeed test, override, etc.)
  • 1 speed input, galvanically isolated
  • 4 relay outputs, 6 A, potential free, for alarm and failure outputs
  • 2 transistor outputs, 8 A, wire-breakage monitored and short circuit-proof, for engine stop via solenoid/operating magnet, air flaps from safety system
  • 1 transistor output, 8 A, wire-breakage monitored and short circuit-proof, for engine stop from emergency stop system
  • 1 analog output (4 – 20 mA) for external speed indication
  • Power supply 2 x 24 V DC +30%/-25% for safety system and emergency stop system
  • 1 CAN-bus interface for data communication with AHD 514 A start/stop alarm system
  • 1 serial output (optocoupler)
  • Connections via pluggable terminal lists