Basler BE1-27, Instruction Manual

Page: 39 / 43

TESTS AND ADJUSTMENTS 5-3
NOTE
Steps 2 through 4 apply only to units with Sensing Input Range 2.
NOTE
Steps 5 and 6 apply only to undervoltage functions.
Figure 5-2. Timing Test Circuit Diagram
RESULTS: In units with Sensing Input Range 2 the OVER PICKUP indicator is illuminated as well as the
timed and instantaneous overvoltage test indicators. In units with Sensing Input Range 3 or 4,
all pickup and test indicators will be extinguished.
Table 5-1. Output Terminals
Pickup Function Relay Model
27 59 27/59
Timed Undervoltage 1-10 - 2-10
Instantaneous Undervoltage 2-10 - 12-13
Timed Overvoltage - 1-10 1-10
Instantaneous Overvoltage - 2-10 11-13
Step 2. Slowly decrease the T1 voltage until the OVER PICKUP indicator and the timed and
instantaneous overvoltage test indicators extinguish. Slowly increase the T1 voltage until the
OVERVOLTAGE PICKUP indicator and the timed and instantaneous overvoltage test indicators
illuminate. Record the voltage.
RESULT: This voltage is between 39.2 and 40.8 Vac.
Step 3. Turn the timed and instantaneous OVERVOLTAGE PICKUP controls fully CCW. Slowly
decrease the T1 voltage until the OVERVOLTAGE PICKUP indicator and the timed and
instantaneous test indicators extinguish.
Step 4. Slowly increase the voltage at T1 until the OVERVOLTAGE PICKUP indicator and the timed
and instantaneous overvoltage test indicators illuminate. Measure and record the voltage.
RESULT: This voltage is between 0.5 and 1.5 Vac.
This concludes the pickup test for units with Sensing Input Range 2.
Step 5. Slowly decrease the voltage at T1 until the UNDER PICKUP indicator and the timed and
instantaneous test indicators illuminate. Measure and record the voltage.
RESULT: The voltage is between 53.9 and 56.1 Vac for Sensing Input Range 3 or between 107.8 and
112.2 Vac for Sensing Input Range 4.
Step 6. Increase T1 voltage to 170 Vac for Sensing Input Range 3 or 330 Vac for Sensing Input Range
4. Turn all undervoltage pickup controls fully CW. Slowly decrease T1 voltage until the UNDER
PICKUP indicator and timed and instantaneous undervoltage test indicators illuminate. Measure
and record the voltage.
RESULT: This voltage is between 156.8 and 163.2 Vac for Sensing Input Range 3 or between 313.6 and