BE1-25/79TR Functional Description
Front Panel Display
Description
Range
3-4
DAY
Day clock setting
01-31 days
HOUR
Hour clock setting
00-23 hours
MINUTE
Minute clock setting
00-59 minutes
SECOND
Second clock setting
00-59 seconds
SYS FREQ
Calibration Frequency
60 or 50 set only in Cal Mode
CAL MODE
Calibration Mode Entry
Yes-No
To program a parameter, operate the Settings Select switches until the parameter is displayed. Momentarily
operating the Status/EDIT Up or Status/EDIT Down switch steps the display one digit. Holding the
Status/EDIT Up or Status/EDIT Down switch will increase the rate of change for the display.
To save the new programmed settings and leave the Settings mode, operate the Reset switch. The display
will read SAVE SETUP. If the Status/EDIT Up switch is pushed, all parameter settings that have been
changed will be saved. If the Status/EDIT Down is pushed, the changed settings will not be saved.
To test the front panel LED's and the output relays, operate the Settings Select switches until TST MODE
NO appears in the display. The test mode is entered by pushing both the Status/EDIT Up and the Reset
switches at the same time. When both switches are pushed at the same time, the display changes to TEST
MODE. The test routine can be exercised by pushing the Status/EDIT Down switch for each step or holding
the switch while the test routine cycles through the LED's and output relays. To exit the test mode, operate
the Reset switch.
Status Mode
Status mode is entered after power-up, when the front panel Reset switch is operated or when the switches
are left unchanged for over 1 minute. After entering status mode, the state of the controlled breaker is
monitored. RST1 timer times if the breaker is closed. If the breaker stays closed for the duration of RST1
the relay goes to reset with the RST LED on. If the breaker is open with LL, LB, and PAR open (disabled),
the RST2 timer times down. If this condition exists for the duration of RST2, the relay goes to reset with the
breaker open. If the breaker is open under any other conditions the relay will go to lockout with the LO LED
lit.
Operating the Status/EDIT Up or Status/EDIT Down again will step the display through different active
parameters. Holding the Status/EDIT Up or Status/EDIT Down will scroll the display through the parameters.
The displays are:
Line voltage level
Bus voltage level
Voltage difference level
Phase angle difference level
Frequency difference (FSLIP) level
Timers (enabled timers displaced will decrement)
Voltage monitor settings (LL, LB, DL, DB,
V, Phase Window, and FSLIP Window)
Date
Time
The decimal point in the display indicates that these are active parameters in volts, degrees, hertz, or
seconds that change depending on system conditions. All voltage monitor settings except the FSLIP window
setting do NOT have a decimal point. All other functions displayed in the status mode have a decimal point
except the HSR timer (setting is in cycles) and SYNC timer (setting is in cycles). If conditions are below one
volt or phase angle difference is less than one degree, UNDR or 0 (zero) is displayed for an under range
condition. If the voltages are greater than 150 Vac, OVER is displayed for an over range condition. The
default mode for the status display is the MASTER display.
Summary of Contents for BE1-25/79TR
Page 1: ...05647 6 10 07 14 19 241 5 0 4 15 0 4 64 Publication 9 2787 00 990 Revision B 07 95...
Page 27: ...BE1 25 79TR Controls and Indicators 2 7 Figure 2 7 Front Panel Vertical Mount Relay...
Page 29: ...BE1 25 79TR Functional Description 3 2 Figure 3 1 Functional Block Diagram...
Page 60: ...BE1 25 79TR Installation 4 8 Figure 4 9 RS 232 Interconnection Diagram For IBM Type Computers...
Page 63: ...BE1 25 79TR Testing 5 2 REAR VIEW FRONT VIEW Figure 5 1 BE1 25 79TR Test Simulator...
Page 64: ...BE1 25 79TR Testing 5 3 Figure 5 2 BE1 25 79TR Test Simulator Schematic Diagram Sheet 1 of 2...
Page 65: ...BE1 25 79TR Testing 5 4 Figure 5 3 BE1 25 79TR Test Simulator Schematic Diagram Sheet 2 of 2...
Page 66: ...BE1 25 79TR Testing 5 5 Figure 5 4 Test Setup Diagram...