Keystart engine control module for generators and industrial engines

Keystart Engine Control Module for Generators and Industrial Engines

The Keystart engine control module is designed to provide reliable manual start and automatic engine protection for generators, pumps, and industrial engine applications. It enables safe engine operation through built-in fault monitoring, shutdown protection, and clear status indication, making it suitable for demanding industrial and engine-driven environments where dependable control and simplicity are essential.

Key Features of the Keystart Engine Control Module

Applications of the Keystart Engine Control Module

Keystart Engine Control Module Technical Specifications

Specification Details
Operating Voltage 7–30 VDC (supports 12V and 24V
battery systems)
Voltage during Cranking/Brownout Minimum 5 VDC
Current Consumption Less than 100 mA
Fault Inputs Close to negative DC during fault (low oil
pressure, high coolant
temperature, auxiliary faults)
Generator AC Input (9621) 70–270 VAC rms, 50–60 Hz
Magnetic Pickup Input (9621) 3.5–21 VAC rms, 2000–6500 Hz
Run Output (Fuel) Positive DC, NO relay contacts,
10 A max @ 24 VDC
Start Output (Crank) Positive DC, keyswitch contacts,
10 A max @ 24 VDC
Alarm Output Negative DC (open collector transistor),
300 mA max
Preheat Timer 0 or 10 seconds (default 0)
Fault Override Timer 2–20 seconds (default 10)
Overspeed Trip (9621) 100–130% of nominal speed (default 110%)
Case Material Polycarbonate / polyester
Dimensions (WxHxD) 96 x 96 x 95 mm (3.8 x 3.8 x 3.7 in.)
Panel Cutout DIN 92 x 92 mm (3.6 x 3.6 in.)
Weight Approx. 0.7 lb / 300 g
Operating Temperature -31° to 131° F / -35° to 55° C
EMC Compliance EN55022, Class B

How the Keystart Engine Control Module Works

  • Engine Start
    When the key switch is turned to the start position, the Keystart module activates the fuel and starter outputs, allowing the engine to crank and start safely.
  • Normal Engine Operation
    Once the engine is running, the module maintains the run output and continuously monitors engine parameters such as oil pressure and coolant temperature.
  • Fault Monitoring
    During operation, the Keystart engine control module checks all connected fault inputs and displays engine status through clear LED indicators.
  • Automatic Shutdown
    If a critical fault is detected after the override delay, the module automatically shuts down the engine to prevent damage.
  • Alarm Indication
    An alarm output is triggered during fault conditions, allowing connection to external alarms or remote monitoring systems.

Keystart Engine Control Module – Frequently Asked Questions

What is the Keystart engine control module used for?
The Keystart engine control module is used for manual start, stop, and protection of generators, pumps, and industrial engine-driven equipment.
Does Keystart support automatic engine shutdown?
Yes, the module automatically shuts down the engine when critical faults such as low oil pressure or high coolant temperature are detected.
Can Keystart be used with both 12V and 24V engines?
Yes, it operates across a wide DC voltage range, making it suitable for both 12V and 24V battery systems.
Is the Keystart module suitable for marine applications?
Keystart modules are commonly used in marine auxiliary engines due to their compact design and reliable engine protection features.
Does Keystart support overspeed protection?
Overspeed protection is available on specific models that support generator AC or magnetic pickup speed sensing.

Why Choose Rajkot Marine L.L.C

As an authorized distributor in the UAE & GCC Region, Rajkot Marine L.L.C delivers genuine products with expert technical support. Our team ensures seamless integration for marine, industrial, and oilfield applications — helping clients achieve consistent performance and reliability.

Authorized Distributor

We provide genuine Enovation Controls products backed by manufacturer warranties and support.

Technical Expertise

Our engineers assist with complete system configuration, installation, and troubleshooting.

Regional Presence

Serving UAE & GCC with fast delivery, regional service, and technical guidance.

Reliable Solutions

All solutions are designed to withstand demanding marine and industrial environments.

Office Address

Rajkot Marine LLC
Jerf Industrial No 1 PO.Box: 5861.
AJMAN – UAE.
Main Office
Rajkot Diesel Machines Tr.Est.LLC Industrial Area 15, Capitals Kitchen Building, Show room, no.2 - Sharjah - United Arab Emirates

Enovation Control logo FW Murphy Production Controls logo with red and black text and a circular arrow design Austart air starters MCS Mobile Control Systems SA logo with green MCS acronym and full name in uppercase AXI International logo with bold black letters and a blue gradient accent on the X Packbrake engine & Exhaust brakes