BECKWITH ELECTRIC Syncrocloser M-3410A, Instruction Book

Page: 76 / 225

Configuration and Settings – 3
3–5
Ratio of the Phase VTs/CTs
These ratios are used to calculate the primary
values displayed in the Primary Status Screen
Box, See Figure 4-25, Primary Status Dialog Box
(IPScom for Windows) or Figures 4-51 and 4-52
(IPScom for Palm OS).
Relay Seal-in Time
For outputs that are opearted by protective functions
(not 25), the minimum time the output contact will
remain picked up to ensure proper seal-in, regardless
of the subsequent state of the initiating function.
Individual Seal-In settings are available for all
outputs.
For outputs that are operated by Function 25, the
seal-in time must be set to minimum. This ensures
that the sync permissive contact opens when the
phase angle is out of the setting window.
OK LED Flash
This function allows the user to select the OK LED
to flash (instead of solid) when the relay self-test
does not detect an error condition.
User Logo
Allows the user to input text to identify the relay by
name.
Oscillograph Setup
The oscillograph recorder is capable of storing 120
cycles of data. The total record length can be
configured for one (120 cycles) or two (80 cycles
each) partitions. When untriggered, the recorder
continuously records waveform data, keeping the
data in a buffer memory. A programmable post
trigger delay (5 to 95%) is incorporated to capture
breaker operation. Storage of oscillograph records
is nonvolatile and will be retained even without
power as long as the on-board battery is healthy.
The general information required to complete the
oscillograph setup includes:
• Recorder Partitions : The recorder's
memory may be partitioned into 1 record
of 120 cycles, or 2 records of 80 cycles
each. When triggered, the time stamp is
recorded, and the recorder continues
recording for a user-defined period (5 to
95%).
The snapshot of the waveform is stored
in memory for later retrieval using IPScom
Communications Software. If additional
events or triggers occur before
downloading, and the number of events
exceeds the number of partitions being
used, then the oldest record will be
overwritten. The
OSC TRIG LED on the
front panel will indicate a recorder
operation (data is available for
downloading).
• Trigger Inputs and Outputs : The
oscillograph recorder can be triggered
remotely through the serial
communications interface or automatically
using the assertion of control/status inputs
(IN1 or IN2) or outputs (OUT1 or OUT2), if
designated to do so.
• Post-Trigger Delay : A post-trigger delay
of 5% to 95% must be specified. After
triggering, the recorder will continue to
store data for the programmed portion of
the total record before rearming for the
next record. For example, a setting of
80% will result in a record with 20%
pretrigger data, and 80% post-trigger data.
1 2 1 2
X
Setup Oscillograph Recorder
Number of Records
Trigger Inputs
1 2
Trigger Outputs
Post Trigger
Delay: 5
%
Send
Cancel
Figure 3-5 M-3810A IPScom
®
for
Windows™ Setup Oscillograph Recorder
Dialog Box
Path : Relay/Oscillograph/Setup
COMMANDS
Send Sends all entered information to the
control.
Cancel Returns you to the previous window; any
changes to displayed information are
lost.