Basler Electric BE1-851 - Manual (Page 40)

needed. To read data or to get any reports this can be done without gaining access. After
gaining access though one of the ports a session can be ended with an "Exit" command. If
access is gained, but the session is not ended, a 5-minute time out will end the session and any
changes that were not saved will be lost. If you are using the BESTCOMS program, the gaining
access and the exit commands are done for you.
9.) Why doesn't the trip LED behave as expected when the relay picks up and trips? Another
closely related question would be, "Why don't the targets work?"
If the logic is setup to the point where the protective element is tripping at the desired current
level, but the targets, Trip LED and fault records are not behaving as expected, then there are
two commands that need to be checked for proper operation. The SG-TRIGGER command
needs to have the PU trigger and TRIP trigger logic correctly programmed. This should initiate
the fault record. The SG-TARGET command needs that protective element (function) enabled
to log targets. Please refer Section 6, Reporting and Alarms in the Instruction Manual under the
section Fault Reporting to get further details on how to program these commands correctly. The
Trip LED has two different functions in the relay. When the SG-TRIGGER PU expression is
true, and the TRIP expression is false, the Trip LED flashes. When both the SG-TRIGGER
TRIP and PU expression are true, the Trip LED lights solidly. When neither expression is true,
the trip LED lights solidly if there are latched targets. A flashing LED means one of the
protection elements is in a pickup state and timing towards trip. Once the trip occurs, the LED
turns on solid. The LED will not change state until the target has been reset. If the fault has not
cleared, the LED will turn on again.
Table 2-1. Trip LED Truth Table
SG-TRIGGER PU SG-TRIGGER TRIP Targets Latched Trip LED
True False No Flashes
True True No Lights Solid
False False Yes Lights Solid
10.) Is the IRIG signal modulated or demodulated?
The IRIG signal is demodulated (dc level-shifted digital signal). See Section 1, General
Information, Operational Specifications, and Section 8, Application, for additional information.
11.) Can the IRIG signal be daisy-chained to multiple BE1-851 units?
Yes, multiple BE1-851 units can use the same IRIG-B input signal by daisy-chaining the BE1-
851 inputs. The burden data is non-linear, approximately 4 k-ohms at 3.5 Vdc and 3 k-ohms at
20 Vdc. See, Section 8, Application, and Section 3, Input and Output Functions, for additional
information.
12.) How can I find out what the version number is of my BE1-851?
The application version can be found in three different ways. One, use the HMI, Screen 4.6.
Two, use the ASCII command interface with the RG-VER command. Three, use BESTCOMS
for BE1-851. (The version is provided on the General Information tab of the General Operation
screen.)
13.) Why doesn’t my new relay fit in an old S1 case?
The insertion guide in the S1 case was modified in 2008 to accommodate a relay hardware
change. The new relay will fit with modification to the old case. The procedure for updating the
case insertion guide is found in Section 12, Installation.
2-10 BE1-851 Quick Start 9289900990 Rev R