GE MiCOM P747 Agile User Manual

V01002
DNP Latch
O
N
DNP Latch
O
N
DNP Latch
O
FF
DNP Latch
O
FF
Control Input
(
Latched)
Aliased Control
Input
(Latched)
Control Input
(Pulsed )
Aliased Control
Input
(Pulsed )
The pulse width is equal to the duration of one protection iteration
Figure 49: Control input behaviour
Many of the IED’s functions are configurable so some of the Object 10 commands described in the following
sections may not be available. A read from Object 10 reports the point as off-line and an operate command
to Object 12 generates an error response.
Examples of Object 10 points that maybe reported as off-line are:
● Activate setting groups: Ensure setting groups are enabled
● CB trip/close: Ensure remote CB control is enabled
● Reset NPS thermal: Ensure NPS thermal protection is enabled
● Reset thermal O/L: Ensure thermal overload protection is enabled
● Reset RTD flags: Ensure RTD Inputs is enabled
● Control inputs: Ensure control inputs are enabled
8.4 OBJECT 20 BINARY COUNTERS
Object 20, binary counters, contains cumulative counters and measurements. The binary counters can be
read as their present ‘running’ value from Object 20, or as a ‘frozen’ value from Object 21. The running
counters of object 20 accept the read, freeze and clear functions. The freeze function takes the current value
of the object 20 running counter and stores it in the corresponding Object 21 frozen counter. The freeze and
clear function resets the Object 20 running counter to zero after freezing its value.
Binary counter and frozen counter change event values are available for reporting from Object 22 and Object
23 respectively. Counter change events (Object 22) only report the most recent change, so the maximum
number of events supported is the same as the total number of counters. Frozen counter change events
(Object 23) are generated whenever a freeze operation is performed and a change has occurred since the
previous freeze command. The frozen counter event queues store the points for up to two freeze operations.
8.5 OBJECT 30 ANALOGUE INPUT
Object 30, analogue inputs, contains information from the IED’s measurements columns in the menu. All
object 30 points can be reported as 16 or 32-bit integer values with flag, 16 or 32-bit integer values without
flag, as well as short floating point values.
Chapter 7 - SCADA Communications MiCOM P747
208 P747-TM-EN-1
P747-TM-EN-1.1

GE MiCOM P747 Agile Specifications

General

Brand	GE
Model	MiCOM P747 Agile
Category	Protection Device
Language	English