CAUTION
: The treadmill requires a 20-amp individual branch circuit grounded per
NEC (National Electric Code) guidelines or local region electric code.
120 VAC power, when measured from hot to neutral, should read between 90 and 10’s. ’40s
power, when measured from hot to neutral should read between 180 and 264 VAC. This input
voltage is applied through the power entry plug and wired to the breaker switch. The 120 VAC
breaker switch only interrupts the hot line and the 240 VAC breaker switch interrupts both the
hot and neutral lines. The power is then fed through a line filter which removes high frequency
noise from the line voltage. After the power is cleaned by the line filter it can be applied to the
lower electronics module (
IFT
1
drive).
Review electrical requirements, see
"General Information" on page 5
Lower Electronics Module (IFT module)
The lower control module consists of an
AC
2
drive motor controller, an AC lift motor controller
and a +8.5 Vdc power supply to power the console.
The electronic circuits in the console operate on +5 Vdc, however the lower control module
sends +8.5 Vdc due to the optional external equipment such as Fitlinxx products connected to
the
CSAFE
3
(communication standard for all fitness equipment) port. Sending a higher
voltage (+8.5 Vdc) and regulating the voltage down to +5 Vdc ensures enough supply power
to support both the console and the optional external equipment.
It is important to note that the lower control module (IFT module) has different part numbers
for the 120 Vac unit the 240 Vac treadmill.
1
Integrated Footplant Technology: IFT recognize this change in speed when your foot strikes
the belt and adjust to match every stride, resulting in a smooth, fluid feel that enhances the
workout experience.
2
Alternating Current: electric current which periodically reverses direction between positive
and negative polarity.
3
Communication Specification for Fitness Equipment protocol.
Contact Precor Customer Support at [email protected] or 800.786.8404 with
any questions.
Page 129
9 Theory of Operation
Treadmill Base Operation
