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Generator Power Control
family of controls
888-295-4141 www.encorp.com
9351 Eastman Park Drive Windsor, Colorado 80550
Tech Data
Generator Power Control (GPC)
Utility Power Control (UPC)
Meter Monitor Control (MMC)
Highlights
Multifunction Integrated Generator Control
Standard Communications Protocols
Flexible Development Environment
Protective Relay Modules
ATS Module
Synchronizer Module
System Control Module for Multiple
Genset Applications
Data Sheet Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Industry Standard Communications Protocols. . . . . . . . . . . . . . 2 A Word About Bindings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 GPC - Single Genset Version (PTC) . . . . . . . . . . . . . . . . . . . . . . . . 3 Software Control Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Digital/Analog Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Monitoring Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 GPC - Multi-Genset Version (KWS) . . . . . . . . . . . . . . . . . . . . . . . 6 UPC - Utility Power Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 MMC - Meter Monitor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 System Control Object (UPC & KWS) . . . . . . . . . . . . . . . . . . . . . . 7 General Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Detailed Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . 9 2

TD-2001.fm
Introduction
The Encorp Power family of controls are
analog/digital microprocessor-based devices designed to
fully control single and multiple generator sets, act as
master control nodes and serve meter/monitoring
functions. These industrial-grade devices are protected
by their distinctive Gold Box covers.
The Encorp Power family of controls provide real and
reactive power control, load sharing, generator and
utility metering, automatic transfer switching,
synchronizing, and protective relay functions. All
Encorp Power control products use the L
ONWORKS
®

open field bus protocol for configuration and control.
Encorp Intelligence software products can be used to
configure, control, and display data from Encorp Power
controls.
Single Genset Version (PTC)
The GPC is available in a Single Genset Version (PTC),
designed to control an Automatic Transfer Switch in
multiple modes.
Multiple Genset Version (KWS)
The GPC is also available in a Multiple Genset Version
(KWS) designed to control Automatic Paralleling
Switches capable of load sharing in multiple modes.
Utility Power Control (UPC)
The Utility Power Control (UPC) is designed to act as a
master control node for multiple gensets while
controlling utility and utility-tie circuit breakers.
Meter Monitor Control (MMC)
The Meter Monitor Control (MMC) is used primarily as
an multifunction power meter and can also perform
miscellaneous tasks as required by custom designs.
Remote Access
The Generator Power Control allows application
developers easy access through Encorp Intelligence
Network Services Tool and Virtual Maintenance
Monitor software interfaces for design and
configuration level changes. Standard and non-standard
binding sets can be developed for simple and complex
switchgear applications. Once deployed, the GPC
enables energy system managers to remotely monitor
and control distributed energy resources from a single
location. The ease at which Encorp Intelligence VMM
and VPP software integrates into GPC Single and Multi-
Genset systems allows developers wide latitude in
designing innovative distributed systems.
Technology Neutral
The flexible development environment of the GPC
allows developers to design control scenarios for
virtually any type of prime mover technology. The GPC
is adaptable to established as well as emerging power
generating sources.
Industry Standard Communications Protocols
Embedded PLC software module, IEC 1131 Programming
Language
IEC 1131 is the only major standard for industrial
control programming. It harmonizes the way people
design and operate industrial controls by standardizing
the programming interface. A standard programming
interface allows for an easy software development
lifecycle. All pieces adhere to a common structure and
work together harmoniously. The standard includes the
definition of the Sequential Function Chart (SFC)
language, used to structure the internal organization of a
program, and four inter-operable languages: Instruction
List (IL), Ladder Diagram (LD), Function Block
Diagram (FBD) and Structured Text (ST). This powerful
PLC kernel is embedded into each GPC and is fully
integrated into the overall design architecture of the
unit.
Communications through L
ONWORKS
®
The L
ONWORKS
system is a leading, open, networked
automation and control solution for the building,
industrial, transportation, and home markets.
Thousands of application developers and millions of
devices have been installed worldwide. In a L
ONWORKS

network, intelligent control devices, called nodes,
communicate with each other using a common protocol.
Each node in the network contains embedded
intelligence that implements the protocol and performs
control functions. The central functioning within each
GPC is accomplished through highly sophisticated
L
ONWORKS
objects developed for their specific function
by Encorp engineers. family of controls
TD-2001.fm
3
Communications through MODBUS®
Touch-pad devices used for on-site control of GPC
equipped products communicate using the MODBUS
protocol. The MODBUS protocol is a messaging
structure, widely used to establish master-slave
communication between intelligent devices. RS232,
RS422, and RS485 hardware communication layers are
supported..
A Word About Bindings
(or - Why Our Control is So Unique)
Encorps controls replace the myriad of external,
electrical devices found in traditional switchgear cabinets
with a single control that implements the same functions
in software. Encorp controls retain the familiar
distinction between devices by replacing each physical
device with a corresponding software object. Each device
(object) is then wired together in software using a process
called binding.
Bindingsthe software equivalent of the wiresconnect
the internal objects together. All of the bindings within a
control are referred to collectively as a binding set. The
NST Binding software, available from Encorp, is a
Windows 32 bit program used to create and modify
binding sets.
Node 1
Figure 2 Internal Bindings
Bindings that connect two or more objects within the
same control are called internal bindings (Figure 2). An
internal binding connects an output variable from one
object to the input variable on another object. Both
objects reside within the same control.
Bindings that connect two or more objects on different
controls are called external bindings (Figure 1). Bindings
are a function of the Echelon L
ONWORKS
standard used
by all Encorp controls. Using the NST, you can create
bindings between any nodes on the L
ONWORKS
network.
Encorp produces a standard binding set as an off-the-
shelf product for each control type. In addition, Encorp
can produce custom binding sets for virtually any
application. Standard binding sets may be modified or
developers may create their
own binding sets using the
NST and documentation
from Encorp.
GPC - Single Genset
Version (PTC)
The Single Generator
version of the control is
designed for use as a
generator control in single-
unit applications. The
GPC/PTC is intended to
control a stand-alone
genset as well as enabling it
to parallel with the utility.
The GPC/PTC is most
commonly used in single-
unit Automatic Transfer
Switch (ATS) applications.
Encorp control #1
Encorp control #2
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