CYG PRS-7367 User Manual

Hardware
PRS-7367 271
Name
Description
Dev_Err Open
Device abnormality alarm normal open terminal.
BO01~06
The No.1 ~6 programmable tripping or closing binary output. BOi
( i=1~6 ) Open is the normal open binary output.
BO07~09
The No.2 programmable signal binary output. BOi ( i=7~9 ) Open is the
normal open binary output, BOi ( i=7~9 ) Cls is the normal close binary
output.
6.4 Main CPU Module
The main CPU module, containing powerful microchip processors and some necessary
electronic accessories, is the core part of this relay. This powerful processor executes all the
functions of the relay and conduct the commands, including the protection logics, the control
function and the internal and external information interfacing functions.
A high-accuracy crystal oscillator is installed on the module as well, ensuring the relay to operate
exactly based on the accurate current time.
The main functions of the main CPU module include as below:
 Sampling information processing
The values of each sampling point will be stored and then sent to different processing module
for different function, including display, calculation, communication.
The values of each binary IO contacts will also be stored and then sent to different processing
module for different function, including display, calculation, communication.
 Protection, measuring and metering quantities calculation
The CPU module can calculate all the relevant quantities (zero sequence current and voltage,
negative sequence current and voltage, harmonic quantities of up to 13
th
) on the basis of the
directly sampling quantities (phase-to-earth voltages and currents, phase-to-phase voltages
and currents) and binary inputs. After the calculation, all the quantities are sent to the
protection function module or control module to decide whether the relevant dry contacts trip
or close.
 Communication management
The CPU module can effectively execute all communication procedures parallel and reliably
interface coded messages through the selected communication interfaces. These interfaces
are usually used to communicate with a SCADA or a Station Gateway through a switcher. The
CPU module is also responsible for information exchanging with the HMI module. If any
monitoring condition changes or any event occurs (SOE, protection tripping event, device
abnormality), this module will send out the relevant event information to all relevant receivers,
so as to ensure a first time alarm to notice the users.
 Auxiliary calculations
Besides all the quantities mentioned above, the CPU module can also calculate the metering

CYG PRS-7367 Specifications

General

Brand	CYG
Model	PRS-7367
Category	Control Unit
Language	English