Regal-Beloit GE ECM X13 - DSI (Direct Serial Interface)

© 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 Cont
rol