Basler Electric BE1-81O/U - Manual (Page 45)

9137300990 Rev N 39
5. Slowly decrease the sensing input frequency until the Setpoint 1 Pickup indicator just lights. The
sensing input frequency should be 51.11 Hz,
±0.01 Hz.
6. Repeat steps 4 and 5 for Frequency Selector Switch settings of 52.22, 54.44, and 58.88.
Definite Time Delay – Cycles
1. Connect the relay as shown in Figure 28.
2. Adjust Selector Switch S7 for setpoint 1, located on the definite time circuit board controlling setpoint
1, to obtain a time delay in cycles with a x1 multiplier (S7-1 down, S7-2 down, and S7-3 up).
3. Adjust the front panel, Setpoint 1 controls to the following settings:
•
Over/Under Selector Switch: Under (U) position
•
Frequency Selector Switch: 55.00
•
Time Delay Selector Switch: 11
4. Apply operating power to the relay.
5. Apply 60-hertz voltage to the relay sensing input. The level of voltage must exceed the setting of the
adjustable, front-panel Undervoltage Inhibit control.
6. Ensure that the target indicators are reset.
7. Step the sensing input frequency down from 60 Hz to 53 Hz. The Setpoint 1 Pickup indicator lights
and the test set timer begins counting. When the time delay ends, the setpoint 1 output relay and
target trips, and the test set timer stops counting. The timer should indicate 0.208 seconds (11 cycles
x 1/53,
±1.0 cycles).
8. Restore the sensing input frequency to 60 Hz and reset the targets.
9. Repeat steps 7 and 8 for Time Delay Selector Switch settings of 22, 44, and 88.
10. If desired, the above steps may be performed with Selector Switch S7 configured for a time delay
multiplier of x10 (S7-1 up and S7-2 down) or x100 (S7-1 up and S7-2 up).
Definite Time Delay – Seconds
1. Connect the relay as shown in Figure 28.
2. Adjust Selector Switch S7 for setpoint 1, located on the definite time circuit board controlling setpoint
1, to obtain a time delay in seconds with a x1 multiplier (S7-1 down, S7-2 down, and S7-3 down).
3. Adjust the front panel, Setpoint 1 controls to the following settings:
•
Over/Under Selector Switch: Under (U) position
•
Frequency Selector Switch: 55.00
•
Time Delay Selector Switch: 25
4. Apply operating power to the relay.
5. Apply 60-hertz voltage to the relay sensing input. The level of voltage must exceed the setting of the
adjustable, front-panel Undervoltage Inhibit control.
6. Ensure that the target indicators are reset.
7. Step the sensing input frequency down from 60 Hz to 53 Hz. The Setpoint 1 Pickup indicator lights
and the test set timer begins counting. When the time delay ends, the setpoint 1 output relay and
target trips, and the test set timer stops counting. The timer should indicate 2.5 seconds,
±0.05
seconds.
8. Restore the sensing input frequency to 60 Hz and reset the targets.
9. Repeat steps 7 and 8 for Time Delay Selector Switch settings of 22, 44, and 88.
10. If desired, the above steps may be performed with Selector Switch S7 configured for a time delay
multiplier of x10 (S7-1 up and S7-2 down) or x100 (S7-1 up and S7-2 up).
BE1-81O/U Testing