Basler Electric BE1-11t - Manual (Page 449)

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Frequently Asked Questions (FAQ)
Electrical/Connections
Is the power supply polarity sensitive?
No, the power supply will accept either an ac or dc voltage input. Refer to the Typical Connections
chapter.
Are the sensing contacts polarity sensitive?
Yes, refer to the Typical Connections chapter for more information.
What voltage level is used to develop current flow through the contact sensing inputs?
Voltage level is dependent on the power supply option (called out in the BE1-11t style chart). For
additional information, refer to the
Contact Inputs and Outputs chapter and the style chart in the
Introduction chapter.
Can the IRIG signal be daisy-chained to multiple BE1-11t units?
Yes, multiple BE1-11t units can use the same IRIG-B input signal by daisy-chaining the BE1-11t inputs.
The burden data is nonlinear, approximately 4 kilo-ohms at 3.5 Vdc and 3 k
Ω at 20 Vdc. See the
Specifications chapter for additional information.
General Operation
Does the BE1-11t trip output contact latch after a fault?
The answer to the question is yes and no. In general, once the fault goes away the output contacts open.
The BE1-11t does offer an option to ensure that the contact will stay closed for at least 200 milliseconds.
See the
Contact Inputs and Outputs chapter for additional information on that function. Also, a Set Priority
Latch in BESTlogic
™Plus can keep the relay outputs closed as long as power is applied.
Can I make logic settings at the front panel?
No, logic settings cannot be made at the front panel. Logic settings must be programmed using
BESTCOMSPlus
® communication software.
Since the BE1-11t is a programmable device, what are the factory defaults?
Default settings are shown with each function in the instruction manual. For input or output default
settings see the
Contact Inputs and Outputs chapter. For protection and control functions, see the
appropriate chapters. The factory default logic scheme is defined in the BESTlogicPlus chapter.
Does the BE1-11t have a battery installed as the backup power source for the internal
clock on loss of power?
A ride-through capacitor, up to 24 hours, and a backup battery, greater than five years, are standard
features of the BE1-11t. Refer to the
Timekeeping chapter for more information on the backup battery
including replacement.
How are reports and other information obtained from the BE1-11t saved in files for future
use?
BESTCOMSPlus can be used to view sequence of events, fault records, security log, load profile, and
breaker status. See the appropriate chapters for more information.
BE1-11t Frequently Asked Questions (FAQ)