Dynalco F-16 Frequency Generator/Counter - Manual (Page 2)

Azonix-Dynalco, 3690 N.W. 53 Street, Fort Lauderdale, FL 3330 U.S.A.
(954) 739-4300 • Fax (954) 484-3376 • www.dynalco.com • [email protected]
F-16 CONTROLS
CALIBRATION EXAMPLE
Determine setpoint value on an SW-50 Series Speed Switch — on the bench
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Turn on the F-16.
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Set the F-16 to a low frequency—below what would be expected to trip that
setpoint.
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Attach the red F-16 lead to Terminal 3 on the SW-50.
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Attach the black F-16 lead to terminal 2 on the SW-50.
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Make sure the F-16 is set to GENERATOR.
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Slowly increase the frequency on the F-16.
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Using an ohmmeter across each relay contact, in turn, determine the frequency
at which the relays change state.
Note: An overspeed relay will latch if terminal 4 is not grounded.
Change setpoint value on an SW-50 Series Speed Switch — on the bench
Remove the screws in the access holes for the required setpoint adjustment trim pots.
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Set the signal generator to the frequency at which the relay should change
state.
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Using a small, flat blade screwdriver, slowly adjust the trim pot for the
appropriate relay until the relay changes state.
• CW to increase the setpoint value
• CCW to decrease the setpoint value
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Decrease the frequency, then slowly increase it to verify that the relay trips at
the appropriate point.