BECKWITH ELECTRIC M-3425, Instruction Book

Page: 118 / 225

1
3
A
B
C
4–19
Remote Operation – 4
4.5 Cautions
System and IPScom ® Compatibility
Every attempt has been made to maintain
compatibility with previous software versions. In
some cases (most notably with older protection
systems), compatibility cannot be maintained. If
there is any question about compatibility, contact
the factory.
System Priority
System conflicts will not occur, as local commands
initiated from the front panel receive priority
recognition. When the unit is in local mode,
communication via the serial ports is suspended.
IPScom displays an error message to indicate this
fact.
Time and Date Stamping
Time and date stamping of events is only as useful
as the validity of the unit’s internal clock. Under the
Relay menu, the Set Date/TIme command allows
you to manually set the unit’s clock.
Echo Cancel
The Echo Cancel check box, under the Comm
menu, should only be used when several relays are
connected via a fiber optic loop network. Otherwise,
echo cancel must
not be selected or communication
will be prevented.
Serial Port Connections
If the serial port is connected to something other
than a modem, and an IPScom modem command
is executed, the results are unpredictable. In some
cases, the computer may have to be reset.
X Function Status
P: Pickup T: Tripped
P T T P
(21) #1 Phase Distance
(21) #2 Phase Distance
(24DT) #1 Volts/Hz DEF
(24DT) #2 Volts/Hz DEF
(24IT) Volts/Hz INV
(27) #1 Phase Undervoltage
(27) #2 Phase Undervoltage
(27 IN) #1 Neutral Undervoltage
(27 IN) #2 Neutral Undervoltage
(32) #1 Directional Power
(32) #2 Directional Power
(40) #1 Loss of Field
(40) #2 Loss of Field
(46DT) Neg. Seq. Overcurrent DEF
(46IT) Neg. Seq. Overcurrent INV
(50) Phase Overcurrent
(50/27) Inadvertent Energizing
(50BF) Breaker Failure
(50DT) #1 Time Overcurrent
(50DT) #2 Time Overcurrent
(50N) Instant. Neutral Overcurrent
(51N) Inv. Time Nml Overcurrent
(51T) Inv. Time Pos. Sequence
(51V) Inv. Time Phase Overcurrent
(59) #1 Phase Overvoltage
(59) #2 Phase Overvoltage
(59N) #1 Neutral Overvoltage
(59N) #2 Neutral Overvoltage
(60FL) VT Fuse-Loss
(64B) Brush Lift Off
(64F) #1 Field Ground
(64F) #2 Field Ground
(64B) Stator Ground
(78) Out of Step
(81) #1 Frequency
(81) #2 Frequency
(81) #3 Frequency
(81) #4 Frequency
(81R)#1 Rate of Change of Frequency
(81R)#2 Rate of Change of Frequency
(87) Phase Differential Current
(87GD) Ground Differential
(EXT) #1 External
(EXT) #2 External
OUTPUT1
OUTPUT2
OUTPUT3
OUTPUT4
OUTPUT5
OUTPUT6
OUTPUT7
OUTPUT8
INPUT1
INPUT2
INPUT3
INPUT4
INPUT5
INPUT6
INPUT FL
Figure 4-20 Function Status Dialog Box
Path: Relay menu / Monitor submenu / Function Status window
Function Status window shows the status of various functions, with “T” representing the function which has tripped, and “P”
representing the function which has picked up and is timing.
COMMAND BUTTONS
Close Exits the currently displayed dialog box.