ABB Auto Synchronizer AS800
The Auto Synchronizer AS800 adds automatic
circuit-breaker closure capability to the System
800xA or to any other controller with Profibus
interface. It can be used for generator to grid
synchronization, as well as for peer to peer
bus synchronization in switchyard applications.
The AS800 module supports high and low
range (0-130 VAC and 0-50 VAC) bus input
voltages operating at either 50 or 60 Hz.
The AS800 functionality includes automatic
matching of voltage, frequency and phase, as
well as automatic generator breaker closure.
Additional Features
Built-in Profibus Interface
Non-proprietary communication for true
open architecture integration
Master and Line Redundancy
Sync Verification
The AS800 has a built-in independent
synchronization circuit which serves as a
check to the primary circuit.
When voltage, frequency, and phase match
occur, the AS800 will only close the breaker
when the primary and secondary
synchronization circuits are in agreement.
Dead Bus Capability
The AS800 has the intelligence to recognize
dead bus situations, and upon external
enabling (Dead Bus Enable input), will perform
breaker closure.
Stand-Alone Mode
The AS800 can operate in harmony with a
master controller (such as AC800M) via
Profibus communication. It can also operate
independently with hard-wired digital inputs
and serial communication via an RS-232
physical interface.
Inputs
The AS800 field inputs include two AC
voltage signals (buses to be synchronized)
and eight digital inputs for process
feedbacks and Stand-Alone Mode interface.
2 AC Inputs (120VAC 50/60Hz)
Line / Generator
Bus A / Bus B (switchyard applications)
2 Digital Inputs (24/48/125VDC, 120VAC)
Generator Breaker
Dead Bus Enable
6 Digital Inputs (24/48VDC)
Breaker Status Feedback
Independent Relay Feedback
4 Stand Alone Mode Permissives
Outputs
There are six outputs used to drive external
relays (ROM810) for voltage regulator
control, frequency control, and generator
breaker control.
The two breaker control relays, Main and
Indicheck, can be connected in series.
6 Relay Outputs
Generator Breaker Main
Generator Breaker Indicheck
Volts Raise
Voles Lower
Speed Raise
Speed Lower

800 Series Turbine Modules
Auto Synchronizer AS800
Applicable Hardware
The Autosynchronizer AS800 has three main
components, conveniently designed for simple
integration and quick assembly.
Common Processor Module (CPM810)
Executes the autosynchronization software
algorithms and communicates with the
master controller via Profibus DP.
Auto Synchronization Module (ASM810)
Receives and digitizes the field inputs.
Terminal Base Unit
Houses the CPM810 and ASM810 modules
and provides terminals for power, field inputs,
and communication.
The AS800 can interface to one or more Relay
Output Modules (ROM810), based on the
requirements of each specific application.
AS800 Hardware
1 -CPM810 Common Processor Module
1 -ASM810 Auto Synchronization Module
1 -TBU810 Terminal Base Unit
ROM810 Relay Output Module
800 Series Turbine Modules
The Next Way of Thinking
ABB Inc.
Business Unit Power Generation
2 Acee Drive
Natrona Heights PA 15065-9700
Telephone: (724)295-6022
Fax: (724)295-6560
E-mail: camilo.lopez@us.abb.com
www.abb.com/powergeneration
NOTE:
We reserve the right to make technical changes or modify the contents
of this document without prior notice. With regard to purchase orders,
the agreed particulars shall prevail.
ABB does not accept any responsibility whatsoever for potential errors
or possible lack of information in this document.
We reserve all rights in this document and in the subject matter and
illustrations contained therein. Any reproduction – in whole or in parts –
is forbidden without ABB's prior written consent.
Copyright©
2005 ABB
All rights reserved.
Profibus Interface to Control Processor
Non-proprietary communication for true
open architecture integration
Master and Line Redundancy
Flexible Installation Configurations
Din Rail Mountable
Standard 24VDC power supplies
Existing cabinet installation for retrofits
Turbine deck mounting eliminates wiring
for new installations