© 2006
GE ECM
by Regal-Beloit
- 37 -
Indoor Blower Motors
v0.2
DSI (Digital Serial Interface) Mode
(Premium ECM Model 2.5)
This is the next generation in communicating systems controlled by a Digital
Bus System Controller.
The system controller digitally communicates with the motor: Speed, Airflow, Starts,
Stop, etc.
There are 2 leads for power (12VDC) and 2 leads for communication.
12 V
0 V
1000001
0011100
0001110
0.3 sec
Command
1 12 VDC
2 GND
3 Transmit/Receive
4 Transmit/Receive
16 pin connector
on motor
Control Board
Connection
Pin
Communication Example
Pin Number
1
Optional ground common
2 NC*
3 Optional ground common
4 NC*
5 NC*
6 NC*
7
Voltage pin supplier for data out
8 Ground common
9 NC*
10
Data in
11 NC*
12 NC*
13 NC*
14 NC*
15 NC*
16
Data out
*Not Connected
ECM 2.5
Motor Control
