TP-6953 7/19 183Section 10 Alternator Component Testing and Adjustment
Activator
Board
Description Comments
P17- 1 PWM target current signal, 5B, LED(- ) LED is 1.2 VDC max. Can be connected to a 12-volt battery negative terminal as an
activator troubleshooting test. Add a 120 ohm resistor when using a 12 VDC (battery).
P17- 2 Normal power input
25- 250 VAC @ 30- 400 Hz ( 3 amps.).
P17- 3 Normal power input
P17- 4 Normal power input
P17- 5 Field current output (- ) Rated at 5.0 amps. continuous, 7.8 amps peak for 1 minute.
P17- 6 PWM target current signal, 3B, LED(+) LED is 1.2 VDC max. Can be connected to a 12-volt battery positive terminal as an
activator troubleshooting test. Add a 120 ohm resistor when using a 12 VDC (battery).
P17- 7 Alternator power input (- )
12- 200 VDC or 120 VAC (for powering the board during testing).
P17- 8 Alternator power input (+)
P17- 9 Not used
P17- 10 DC bus voltage (+)
Rated at up to 30 VDC, 250 mA, relay driver output. Turns on when the DC bus that
provides current to the field reaches 35 VDC. This occurs when the alternator is
producing at least 25 VAC on the auxiliary windings. This output is typically used to
disconnect the field flash relay.
P17- 11 DC bus voltage (- )
P17- 12 Field overvoltage (+)
Rated at up to 30 VDC, 250 mA, relay driver output. Turns on when the DC voltage of
the field (between FP and FN) exceeds 80 VDC indicating an over excitation condition.
P17- 13 Field overvoltage (- )
P17- 14 Field current output (+) Rated at 5.0 amps. continuous, 7.8 amps peak for 1 minute.
Figure 10-18 Activator Board P1 Connections
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