Basler Electric BE1-25A - Manual (Page 84)

2. Set the bus and generator sensing voltages to equal values.
3. Set the bus and generator sensing frequencies equal and about 90
° out of phase.
4. Connect the oscilloscope or frequency counter to the module front panel pin jacks.
5. Confirm the following waveform (Figure 6-16).
Figure 6-16. Pulse Interval Waveform
VOLTAGE MATCHING MODULE V4
Description and Application
Option V4 modules (Figure 6-17) provide an
isolated, bipolar dc correction signal to a
summing-input type of voltage regulator, or to
generator excitation equipment. Examples of the
former: Basler SSR, SR, or KR regulators.
Examples of the latter: Basler SSE or SER-CB
static exciter-regulators. Figure 6-18 shows the
connections for V4 modules.
The STABILITY control provides a rate-of-
change adjustment for the correction signal to
match the correction signal to the generator
regulator response.
V4 Functional Description
(See Figure 6-19.) The raise or lower voltage
signal is output to the appropriate gate and, in
turn, to either the positive or negative amplifier.
The amplifier signal is directed first to the
stability circuit (whose output is buffered by the
output buffer) and then to an external summing
point voltage regulator. A circuit-board-mounted
switch is used to invert (if necessary) the output
polarity so as to match a particular voltage
regulator requirements.
A voltage inhibit signal from the A option, or a
remove corrections signal from the synchronizer
module will inhibit further output changes. A
dead bus input or a 52b auxiliary contact closure
will cause the output to go to zero volts.
Figure 6-17. Module V4
NOTE
On the F2 and F4 modules, the waveform is not the summing point output but the
input to the summing point driver.
6-14 BE1-25A Relay Differences 9146600990 Rev S