BASLER ELECTRIC DECS125-15-B2C5 DIGITAL EXCITATION CONTROL SYSTEM V 2.0.9
BASLER ELECTRIC DECS125-15-B2C5 DIGITAL EXCITATION CONTROL SYSTEM V 2.0.9
Checking the State of Inputs
You can review the state of the inputs through the front panel HMI, the ASCII command interface, or
BESTCOMS Metering screen. The front panel HMI displays the input status on Screen 1.4.1. A diagram
showing all of the menu tree branches is located in Section 10. Human-Machine Interface. To get to this
screen, press the UP scrolling pushbutton until you reach the top screen in the current branch. You know
when you have reached the top screen because the screen stops changing when you press the UP
scrolling pushbutton. From this position, press the RIGHT scrolling pushbutton until you have reached the
screen titled, REPORT STATUS. From this position press the DOWN scrolling pushbutton one time
(TARGETS) and press the RIGHT scrolling pushbutton three times. At this time, you should see the
OPERATIONAL STATUS Screen. If you press the DOWN scrolling pushbutton from this screen, you
should see the INPUTS Screen (IN 1234).
To check the state of the inputs using the ASCII command interface, type in the RG-STAT command and
press enter. This command only reads the status of the inputs.
Testing
To determine if the relay is responding correctly to each test, the following commands are useful:
1. RG-TARG, (report general targets): reports the targets from the last fault.
2. RF, (report faults): reports a directory listing of the twelve fault summary reports. The fault summary
reports are numbered from 1 to 255. then wrap around, and start over. RF-### reports the ### report.
3. RS-##, (report sequence of events record), ## events: reports the most recent ## changes of state
in the protection and control logic.
FAQ/Troubleshooting
Frequently Asked Questions (FAQs)
1.)
Why won’t the Trip LED reset when I press the Reset key on the front panel?
The Reset key is context sensitive. To reset the Trip LED or the targets, the Targets screen
must be displayed. To reset the alarms, the Alarms screen must be displayed.
Is the power supply polarity sensitive?
No, the power supply will accept either an ac or a dc voltage input. However, the contact
sensing for the programmable inputs is polarity sensitive. Refer to Section 12. Installation, for
typical interconnection diagrams.
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-GPS100 style
chart). For additional information, see Figure 1-1 in Section 1. General Information, and Section
12. Installation.
Does the BE1-GPS100 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-GPS100 does offer an option to ensure that the contact will stay closed
for at least 200 milliseconds. See Section 3. Input and Output Functions for additional
information on that function. However, BESTlogic can keep the relay outputs closed as long as
power is applied. Refer to Section 8. Application, Application Tips, for additional information.
Why won’t a function work when I put in settings such as the pickup and time delays?
Make sure that the logic for the function is set to “Enable”.
Percent-of-Range Field
The percent-of-range field displays the setpoint expressed as a percentage of the available adjustment
range. This relationship is linear. For example, a setpoint that is midway between minimum and maximum
would be displayed as 50.0%. A setpoint that is at the maximum limit would be displayed as 100%.
Mode Message Field
The bottom of the metering screen contains the mode message field which displays a message indicating
the DECS-200’s current mode of operation.
Alarm Annunciation Field
The alarm annunciation field, located directly below the metering fields, remains blank during normal
operating conditions. When an alarm condition occurs, the message “ALARMS (PRESS < OR >) appears
in the alarm annunciation field. The message appears as an inverse display—light colored characters
appear on a dark background. See Alarm Message Screen for information about how to identify which
alarm condition was annunciated.
Alarm Message Screen
From the metering screen, pressing either the Left or Right scrolling pushbutton will cause the alarm
message screen to appear. This screen displays up to six messages identifying the conditions that led to
the most recent annunciations. Table 2-6 lists the messages that may appear as annunciations on the
alarm message screen. When more than one message is listed, the newest annunciations are appended
to the bottom of the list. Once the list contains six messages, any further annunciations will cause the
oldest messages to be deleted from the top of the list.