© 2006 GE ECM by Regal-Beloit
- 20 -
Indoor Blower Motors
v0.2
The Signal Cable (low voltage) Connection
The 16 pin signal cable connects between the “OEM tap board” and the motor
controller.
The connector is keyed for proper connection.
There are three modes of operation control (communication). The OEM decides
which type of operation they will use. All three use the same 16 pin plug utilizing all
or some of the pins depending on the mode of operation and the systems
requirements.
The 2.3 motor communicates in one of two formats.
- Thermostat Mode (also used on model 2.0 motor)
- PWM (Pulse Width Modulation) Mode
The 2.5 motor communicates in one format.
- DSI (Digital Serial Interface) Mode.
Communication to the motor is far more diverse than the simple 24vac heat, cool,
and continuous fan demands we are used to. This is necesary to be able to select
multiple programmed airflow and comfort settings for each of these demands as well
as delays, and other comfort selections.
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