Satec PM180 - File Transfer Model; Impact of the Device Settings; Logical Device Mode; Controls

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Item Value/Comments
updated from any external time source or via communications.
Meaning of ClockNotSynchronized bit The bit is set in the event of using unsynchronized internal clock
for time stamping in the following cases:
a) if none of the external time sources is selected for time
synchronization
b) if no valid time synchronization message arrives in 10 minutes
after the expected time from either a SNTP server, or from the
IRIG-B time code input
Number of SNTP servers supported 2
SNTP polling interval Programmable, 60 to 86400 seconds
Allowable SNTP server response time 10 seconds
Number of SNTP connection retries for each
server
Up to 3 retries in 1 minute intervals
Failed SNTP server reconnection time 10 minutes
File transfer model
Item Value/Comments
Maximum length of names (incl. path) 64
Separator for file and directories path ‘\’
Maximum number of directory entries 10 per recorder (the last 10 events recorded, starting from the
newest record)
Structure of directories COMTRADE\filename
Filename structure drRDRE<1…8>$<fault number>$<trigger event ID>.cfg
drRDRE<1…8>$<fault number>$<trigger event ID>.dat
5.3 Impact of the device settings
Logical device mode
Logical device mode given by LLN0.Mod is always ON.
Controls
The Loc attribute in logical nodes containing controls indicates the complementary status of
the internal BOOLEAN variable REMOTE MODE defaulted to FALSE. It is controlled via a
setpoint logic equation that should normally check the status of an external Local/Remote
switch. Control commands addressed to the CSWI switch controller nodes and to the boGGIO
general binary output nodes will be rejected with AddCause=2 Blocked-by-switching-
hierarchy until REMOTE MODE is set to TRUE via a logic equation.
The PM180 can provide additional protection for control nodes based on client IP addresses
by enabling control commands for specific clients and disabling or conditional blocking via
logic equations for others. Commands received from a blocked client port are rejected with
AddCause=2 Blocked-by-switching-hierarchy.
Measurement units
Voltage, current and power units are selectable (see Section 6.2 for details).
Units (precision) Measurement type
PT = 1 PT > 1
Current A/kA (0.01 A) A/kA (0.01 A)
Voltage AC V/kV (0.1 V) V/kV (1 V)
Power kW, kVA, kvar or MW, Mvar, MVA
(0.001 kW/kVA/kvar)
kW, kVA, kvar or MW, Mvar, MVA
(1 kW/kVA/kvar)
Energy 0.001/0.01/0.1/1 kWh, kVAh, kvarh 0.001/0.01/0.1/1 kWh, kVAh, kvarh