Description, Features | Murphy MGC921 Series instruction

FRANK W.	®	MGC-95093B
		Revised 03-00
	MFR.	Catalog Section 75
	MFR.	(00-02-0134)
		(00-02-0134)

Generator Panel

MGC921 Series

■ Available in Manual or Auto Start

– 12 or 24 VDC Battery Voltage

– Single Phase or 3-Phase ■ Compact

■ Full Featured

Description

The MGC921 provides economical engine and generator control for applications not requiring NFPA-99 or NFPA-110 approval. Models are available for Manual or Automatic start designed for 3-phase, 4-wire or 1-phase, 3-wire genera- tors. Models MGC921 feature mechanical SWICHGAGE® s for engine oil and coolant tem- perature. Models MGC921E feature EGS elec- tric SWICHGAGE® s. The panels are housed in a 13 x 10 x 11 in. (330 x 254 x 279 mm) shock mounted NEMA 1 drip-proof enclosure. Current transformers (CT’s) are not included.

Features

■Auto-Start Panel includes the following features.

•ASM150, auto-start controller with:

–Optically-isolated noise resistant inputs.

–Outputs for fault annunciator.

–Crank/rest cycle timer, 4 to 25 sec. adjustable.

–Shutdown time delay, 1 to 25 seconds (adjustable), locks out low oil pressure and high temperature on start-up.

–Crank disconnect and overspeed sensing operates from a magnetic pickup signal (requires 2 Vrms minimum).

•Auxiliary starter relay. Contact rating: 12 volt, 40 amp/24 volt 16 amp.

•Oil pressure SWICHGAGE® , 2-1/16 in. (52 mm) dial, 0-100 psi (0-689 kPa) [6.89 bar].

•Temperature SWICHGAGE® , 2-1/16 in (52 mm) dial, 130-250°F (54-121°C), 12 ft.

(3.7 m) capillary.

•TEST-OFF-AUTO selector switch.

•Two 2-1/16 in. (52 mm) dia. holes, plugged.

■Manual Start Panel includes the following features.

•Power OFF-ON toggle switch and start push button.

•518APH TATTLETALE® annunciator.

•Auxiliary starter relay. Contact rating: 12 volt, 40 amp/24 volt 16 amp.

•Oil Pressure SWICHGAGE® , 2 in (51 mm) dial, 0-100 psi (0-689 kPa) [6.89 bar].

•Temperature SWICHGAGE® , 2 in (51 mm) dial, 130-250°F (54-121°C), 12 ft. (3.7 m) capillary.

•Two (2) 2-1/16 in. (52 mm) diameter holes, plugged.

■AC meters

•AC voltmeter, 3-1/2 in. (89 mm) dial, ±2% full scale (specify range: 300 V or 600 V).

•AC ammeter, 3-1/2 in. (89 mm) dial, ±2% full scale (specify range: 50 to 4000 A).

•AC frequency meter, 120 V, 3-1/2 in. (89

mm)dial, ±0.6% Hz, 45–65 Hz.

•Frequency meter rheostat.

Options

■AC ammeter-voltmeter phase selector switch*. Requires 2 additional CTs.

■Hourmeter, 2 in. (51 mm) dial, 5-digit.

■Battery voltmeter, 2 in (51 mm) dial (range determined by battery voltage).

■Battery ammeter, 2 in (51 mm), 60-0-60.

*Standard (included) with 3-phase models.

Specifications

■Auto-Start Panel

•Power Requirements:

–12 VDC battery for 12 V models.

–24 VDC battery for 24 V models.

•Inputs: Ground or positive inputs for high temperature or low pressure sensors.

•Outputs:

–Auxiliary starter relay. Contact rating:

12 volt, 40 amp/24 volt 16 amp.

–300 mA transistors for fault annunciation

•Operating Temperature: -4 to 140°F (-20 to 60°C).

•Cycle Crank Timer: Up to 8 attempts. Recrank on false starts (fixed 30 seconds).

•Crank/Rest Cycle Timing: 4 to 25 seconds (adjustable).

•Shutdown Time Delay: 1 to 25 seconds (adjustable). Locks out low oil pressure and high temperature on start up.

•Crank Disconnect Speed Setting:

From 30 to 8500 Hz.

•Overspeed Trip Point Setting: From 30 to 8500 Hz.

•Magnetic Pickup Input: Requires 2 Vrms minimum.

■Manual Start Panel

•Power Requirements:

–12 VDC battery for 12 V models.

–24 VDC battery for 24 V models.

•Operating Temperature: -4 to 140°F (-20 to 60°C).

MGC921 Series specifications

The Murphy MGC921 Series represents a significant advancement in monitoring and control technology for engine and industrial applications. Renowned for its reliability and versatility, the MGC921 is designed to enhance operational efficiency by providing comprehensive engine management and monitoring capabilities.

At the forefront of the MGC921 Series is its user-friendly interface, featuring a large, easy-to-read display that ensures critical information is always accessible. The display shows vital metrics such as engine temperature, fuel consumption, and operational hours, enabling users to make informed decisions regarding maintenance and performance.

One of the defining characteristics of the MGC921 is its robust diagnostic capabilities. The device is equipped with sophisticated diagnostic algorithms that identify and report potential issues before they escalate into significant problems. This proactive approach not only reduces downtime but also extends the lifespan of the engine by ensuring that it operates within optimal parameters.

The MGC921 Series leverages cutting-edge technology to deliver real-time data acquisition and analysis. It utilizes advanced sensors that provide precise measurements of critical variables, including pressure, temperature, and fluid levels. This data is transmitted to the onboard controller, which processes it to deliver accurate and timely insights.

Additionally, the MGC921 supports various communication protocols, facilitating integration with existing systems within industrial environments. This adaptability allows for seamless interfacing with telematics and remote monitoring systems, providing users the ability to oversee their operations from anywhere in the world.

The MGC921 is designed with durability in mind, built to withstand harsh operating conditions commonly found in industrial settings. Its rugged construction and IP-rated enclosure ensure it is resistant to dust and moisture, further enhancing its suitability for demanding applications.

Another noteworthy feature of the MGC921 is its customizable programming options. Operators can tailor settings to meet specific operational needs, allowing for greater flexibility in how the device is used. This customization extends to alerts and notifications, ensuring that users can receive alarms based on personalized thresholds.

In summary, the Murphy MGC921 Series exemplifies innovation in engine monitoring and control technology. With its user-friendly interface, robust diagnostics, real-time data acquisition, and adaptability, it stands out as a powerful solution for industries seeking to optimize performance and efficiency while minimizing operational risks. Its durability, along with customizable options, makes it an ideal choice for a wide range of applications across various industrial sectors.