Siemens 7UT51

14
Operation Using the Front Panel Controls
7UT51 v3
148 PRIM-2330C
Waveform data can be included for a specified
pre-time and post-time before and after the
middle-time. The total recording-time period is limited
by a specified maximum time.
To configure waveform recording, specify the
following:
1. Specify when an enabled and active protection
function will initiate waveform recording:
2. Specify the maximum recording-time (pre-time +
active-time + post-time) for recording events:
3. Specify the length of the pre-time to include in the
recording-time before the middle-time:
4. Specify the length of the post-time to include in the
recording-time after the middle-time:
5. If the relay’s configuration includes having a
signal-contact input directly initiate a waveform
recording (see Section 13.2 on page 126), specify
the middle-time period of the resulting fault log:
6. If waveform recordings will be initiated manually
using the front panel keypad, specify the
middle-time period of the resulting fault log:
7. The following setting can be ignored when
waveform data is exported using the VDEW
protocol:
7402 INITIATION
Kind of protection
-
function event (any pickup or any
trip) that will initiate storage of a waveform
recording, and which event starts the middle
-
time.
STORAGE
BY FD
pickup initiates storage; middle
-
time
begins when pickup occurs
STORAGE
BY TRIP
trip initiates storage; middle
-
time
begins when pickup occurs
START WITH
TRIP
trip initiates storage; middle
-
time
begins when trip occurs
7410 T
-
MAX
Maximum duration for waveform recording. The
maximum duration is dependent on the frequency
chosen. For 50 Hz or 16 2/3, the maximum time is 5
seconds. For 60Hz, the maximum time is 4 seconds.
1.00 s 0.30 – 4.00 seconds
7411 T
-
PRE
Length of pre
-
time during which to include waveform data.
0.10 s 0.05 – 0.50 seconds
7412 T
-
POST
Length of time to continue recording waveform
data after the end of the middle
-
time. Note that
the maximum recording
-
time (Address 7410)
takes precedence over this setting.
0.10 s 0.05 – 0.50 seconds
7431 T
-
BINARY
-
IN
Length of middle
-
time when waveform recording is
initiated by a signal
-
contact input. A setting of ∞ will
extend the middle time until the signal
-
contact becomes
inactive. Note that the maximum recording
-
time
(Address 7410) takes precedence over this setting.
0.50 s 0.10 – 4.00 seconds, or ∞
7432 T
-
KEYBOARD
Length of middle
-
time when waveform recording is
initiated by a manual input using the front panel
keypad. Note that the maximum recording
-
time
setting (Address 7410) may end recording sooner.
0.50 s 0.10 to 4.00 seconds
7490 SYS LENGTH
Specification of length each fault record exported out
either of the relay’s serial ports. This setting only applies
to older data communication networks using the Siemens
LSA protocol, and has no effect on networks using the
VDEW/ZVEI protocol.
660 VALUES FIX fixed length of 660 values
<=3000 VAL. VAR. variable length of up to 3000 values