MC connector pin definitions
CONN
ID NAME PIN Description
INPUT MC AC
1
INPUT PWR 1 EARTH GROUND
2 AC LINE 1- LINE AC LINE
3 AC LINE 2- NEUTRAL
MOTOR DRIVE MOTOR AC PWR OUT 1 MOTOR PHASE W
2 MOTOR PHASE V
3 MOTOR PHASE U
4 MOTOR PHASE W
5 MOTOR PHASE V
6 MOTOR PHASE U
COMM CONSOLE INTERFACE CABLE 1 DIGITAL GROUND
2 +8 VDC
3 TCD DATA OUTPUT
4 DIGITAL GROUND
5 +8 VDC
6 RXD DATA INPUT
7 DIGITAL GROUND
8 E-STOP
DBR
2
(1)
DYNAMIC BRAKE RESISTOR SENSE 1 THERMAL RESISTOR
SENSE
2 THERMAL RESISTOR
SENSE
MON MONITOR (ASL
3
PCA
4
INTERFACE
CABLE)
1 +8 VDC
1
Alternating Current: electric current which periodically reverses direction between positive
and negative polarity.
2
1) DB or DBR: treadmill dynamic break resistor. 2) DB: power measured in decibels (dB).
3
Active Status Light: Service and maintenance status light.
4
Printed circuit assembly, generally referred to as either an upper PCA or lower PCA.
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
Page 105
6 Replacement Procedures
Motor Controller (MC) Replacement