CSX-300 Control Unit

SKU CSX-300

Chalwyn Series 300 Series Diesel Engine Shutdown Systems monitor engine speed to give an immediate engine shut down by closure of an air intake valve if engine overspeed is detected. The CSX-300 is used in 12VDC systems and the CSX-310 is used in 24VDC systems.

The speed signal is taken from the existing engine alternator or flywheel magnetic pickup and is compared electronically with an easily programmed shut down setting. No calculations or knowledge with respect to the drive ratio of the alternator or number of flywheel teeth is required. The system also includes an optional stop button to enable manual emergency closure of the intake shut down valve.

Optionally the CSX-301 (12VDC) and CSX-311 (24VDC) adds the capability of monitoring up to 5 preset high engine temperatures, low oil pressure sensors, or trip input signal from a gas detection system to immediately shutdown a diesel engine if limit conditions are exceeded.

An automatic fuel shut down valve is also available if required.

Features and Benefits

Automatic air intake shutoff valve closure on engine overspeed
Speed signal from magnetic pickup or alternator
Externally powered by 12 VDC or 24 VDC systems
Optional sensor circuit monitoring gas detection system, and pre-set pressure and temperature switches
IP66 rated enclosure with cable glands
Designed for use with other Chalwyn products
- SVX Electric Actuated Air Intake Shutoff Valves
- CSX-840 Emergency Stop Button
- PSX Low Pressure Switches
- TSX High Temperature Switches
- FSX-200 Automatic Fuel Shutdown Valve

Specifications

Inputs & Outputs:	CSX-300	CSX-310
Power:	12 VDC	24 VDC
Speed signal:	Magnetic pickup / alternator	Magnetic pickup / alternator
Outputs to shutoff valve:	46A/12 VDC (pull) 1.1A/12 VDC (hold)	25A/24 VDC (pull) 0.5A/24 VDC (hold)
Manual shutdown:	CSX-840 (status indicator)	CSX-840 (status indicator)
Optional sensor circuits:	Max. 5 (CSX-301)	Max. 5 (CSX-311)
Enclosure:
Material:	Aluminum
Size:	6¼” x 3⅛” x 3⅜” (160 x 80 x 60mm)
Ingress protection:	IP66 with cable glands

Applications

Drilling rigs (onshore & offshore)
Drilling support equipment
Well servicing equipment
Refinery support equipment
Bulk haulers and tankers
Mining equipment
Construction equipment
Generator sets
Emergency response vehicles and equipment
Aircraft refueling equipment
Work boats
Barges
Agriculture equipment

Operation

The speed signal is taken from the existing engine alternator or flywheel magnetic pickup and is compared electronically with an easily programmed shut down setting. Trip set point is configured by using trip speed button. The button is protected by a cover for normal operation. No calculations or knowledge with respect to the drive ratio of the alternator or number of flywheel teeth is required. The set point is set at 20% above the engine speed at the time the button is operated.

The system also includes an optional stop button to enable manual emergency closure of the intake shut down valve. The CSX-840 also includes a status indicator LED.

An automatic fuel shut down valve is also available if required. The FSX-200 Fuel Shutoff Valve is vacuum operated. It is connected to the body of the SVX Electric Actuated Air Intake Shutoff Valve downstream of the shutoff disc. When the valve closes, the resulting partial vacuum between the valve and the engine will cause the fuel valve to close. For details refer to the FSX-200 Fuel Shutdown Valve datasheet.