Alternator Control Board - Model R9, Lc9100R, And Lc9500R - Life Fitness LC9500R Service Manual

Lifecycle Recumbent Bikes LC95R, LC91R, LC85R, R9, R7, 95Ri, 93Ri, 90R, and 95Re

ALTERNATOR CONTROL BOARD - Model R9, LC9100R, and LC9500R

Functional Description
The Alternator Control Board
is designed to regulate the
alternator voltage by
modulating the field current.
It regulates the pass current
(RPM signal) from the
Alternator to the Console,
and the pass current form
the alternator to the load
resistor while providing
supply voltage for the
console while charging the
system battery.
Connector and Pin
Connections
Connector
P1 is a Molex 11 pin connector
that connects to the console.
P2 is a 12 pin connector that
connects to the alternator and
power resistor
P3
P4
P2
Location Pin Functional Description
1 GROUND - BLACK
2 GROUND – BATTERY
3 NOT USED (BLANK)
4 VSYS (7-8VDC)
5 ALTREGLO (9-11 VDC)
6 LOADCMD
7 RPM (0-7.5VDC)
8 START (7-8VDC)
9 VBAT – (6VDC)
10 GROUND – BATTERY
11 GROUND
1 GROUND – ALTERNATOR
2 GROUND – ALTERNATOR
3 GROUND – ALTERNATOR
4 RPM (5VDC)
5 GROUND – ALTERNATOR
6 FIELD (1-4 VDC)
7 LOAD
8 LOAD
9 LOAD
10 VALT (10VDC)
11 VALT (10VDC)
12 LOAD
15
P1