News | May 13, 2011

Caterpillar Introduces Advanced EMCP 4 Controller For Generator Sets

Source: Caterpillar Inc., Electric Power Division

Caterpillar Inc. announced recently the introduction of its latest generator set controller – the EMCP 4. An evolution of previous EMCP 3 controller models, the state-of-the-art EMCP 4 offers several new features and scalable control platforms. The EMCP 4.1, 4.2, 4.3 and 4.4 provide a wide range of benefits designed to suit many different application needs.

The EMCP 4.1 is the entry level controller, offering basic engine and generator monitoring and protection. With the addition of over/under voltage and over/under frequency protection, it is designed to provide complete control, monitoring and protection for standby and prime power applications.

The EMCP 4.2 builds on the features of the EMCP 4.1 controller, offering expanded engine and generator protection and monitoring. Additional generator metering includes kW, kVA and kWh. Flexibility is also increased with the addition of a Modbus RTU communication port, remote annunciator modules and expansion I/O modules to allow the EMCP 4 system to be configured to meet site specific design requirements. With the additional monitoring and expansion modules available, the EMPC 4.2 is designed to provide control and protection for critical installations, such as NFPA 110 Level 1 applications.

Incorporating all of the features of the EMPC 4.2 – including generator metering, Modbus RTU communications and the ability to interface with optional modules – the EMCP 4.3 further expands the EMCP 4 line with the addition of a large 5.5-inch graphical display and additional context specific navigation keys. Industry leading ±0.25 percent metering accuracy provides a precise view of generator operation. With the addition of a Modbus TCP port, the EMCP 4.3 controller can be easily integrated into complex systems requiring more advanced generator set monitoring.

Building on the EMCP 4.3 platform, the EMCP 4.4 introduces on package paralleling controls for Cat® generator sets. This provides a robust set of advanced features to support most system installations. Standard on the EMCP 4.4 are all functions typically required for paralleling. This includes load shed/load add to automatically cycle load based on the number of generator sets online, and load sense/load demand to vary the number of generator sets on line based on the total site load to ensure optimal use of the units.

Annunciator modules are available to provide local and/or remote annunciation of generator set operating status, such as a low oil pressure or high coolant temperature alarms. Each annunciator module can annunciate 16 different parameters, and can be fully customized to meet a customer's requirements.

A range of optional modules is available to further increase the flexibility of the EMCP 4 control system. RTD and thermocouple modules can be added to provide detailed engine and generator temperature monitoring and protection. If additional inputs or outputs are required, an optional input/output module can be added.

With 2009 sales and revenues of $32.396B, Caterpillar is the world's leading manufacturer of construction and mining equipment, diesel and natural gas engines and industrial gas turbines. For more than 80 years, Caterpillar Inc. has been making progress possible and driving positive and sustainable change on every continent. Caterpillar and the established Cat dealer network are committed to continuing this progress.

SOURCE: Caterpillar Inc., Electric Power Division