Price Standard ECM Speed Controller |
ECM |
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Description
The Price ECM speed controller is
specifically engineered to interface with
a high-efficiency ECM motor. This low
voltage speed controller offers either full
manual control (VIA an on-board dial),
automatic control (modulation signal from
terminal unit controller), or BAS (building
automation system) control of the ECM
motor. Switching between the two modes
is easy: just apply the BAS signal and the
controller will automatically switch over
from manual (dial) mode to BAS mode.
Features
There are is a total of four models of USC. |
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Specifications
Power: 24 VAC ±10% @ 50/60Hz (2VA)
Operating Conditions: 32 °F to 122 °F [0 °C to 50 °C] 0% – 95% R.H. non-condensing
Storage Conditions: -22 °F to 122 °F [-30 °C to 50 °C] 0% – 95% R.H. non-condensing
Processor: 8-bit standard flash microcontroller
Inputs: 2 Analog (Dial input and BAS input)
Outputs: 3 Digital (GO signal to ECM, Vspd PWM signal @ 80.0 Hz, Green Status LED)
Connections: ¼ in. Spade Terminals – Recommend 18-22AWG copper wire
Dimensions: 2.5 in. by 3.8 in. [64 mm by 96 mm] (includes mounting plate)
Shipping Weight: 0.100 lbs [46 grams] |
- Low supply voltage (24 VAC).
- Dual outputs to control up to 2 ECM
motors.
- Front facing Green Diagnostic LED – for
easy troubleshooting.
- On-board manual adjustment dial with
front facing voltage taps for voltmeter
hookup (no need to open electrical
enclosure).
- Building Automation System (BAS – 2 to
10 VDC) input for variable speed remote
control.
Diagnostic LED
The Diagnostic LED blinks out the current
status of the board. This information is
used to determine if the speed controller is
operating in Manual (Dial) or BAS (Building
automation system) mode and if the current
setting is OFF or CONTROL. Note: The
Diagnostic LED repeatedly blinks out the
sequential status code followed by a pause. |
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- 1 Blink – Manual Off Mode
- 2 Blinks – Manual Control Mode.
- 3 Blinks – BAS Off Mode
- 4 Blinks – BAS Control Mode
Building Automation System (BAS)
Interface
The BAS interface accepts an industry
standard 2-10 VDC signal from a controller
or computer to vary the speed of the ECM
motor. This allows remote control/shutdown
of the ECM motor based on air requirements
and/or occupancy modes. Note: turning off
24 VAC power to the ECM speed controller
will turn off ECM motor. |
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- 0-1 VDC BAS input – Manual Mode
- 1-2 VDC BAS input – BAS Off Mode
(recommend sending 1.5 VDC to turn off
motor)
- 2-10 VDC BAS input – Modulating
control (0 – 100%)
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