Carnes ECM User Manual

Imperial [IP] Dimensions

Metric (SI) in Parentheses

SPECIFICATION SHEET

Eco-Drive

ECM Motor

CARNES COMPANY 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: [phone] Fax: [phone] www.carnes.com

COPYRIGHT © 2012 CARNES COMPANY

ALL RIGHTS RESERVED

31006 pg 1

Eco-Drive (ECM) Benefits:

Verses PSC Direct Drive Verses Belt Drive

• Up to 70% energy saving • Low maintenance

• Maintain airflow + or - 5% • No energy loss due to belts & pulleys

• Return of investment in as little • Easier setup and balancing
as two years • More energy efficient

• Lower sound levels than PSC motors

• Reliable Regal-Beloit motors

• Fan speed adjusted by small screw
driver or by building automation system

Carnes introduces Eco-Drive

ECM motors for rooftop and inline

centrifugal fans, as well as series

fan powered terminal units.

Eco-Drive motors are highly

efficient and are a perfect fit

into your HVAC needs.

Energy savings per year for a motor operating
6,000 hours per year

CFM Percentage Energy Savings

1500 60%
1900 34%

CFM

kWh

Saved

per Year

Utility

Rate

($/kWh)

Energy

Savings per

Year

At

1500

CFM

2500

0.10

0.18

0.26

$255.00
$459.00
$663.00

At

1900

CFM

1400

0.10

0.18

0.26

$140.00
$252.00
$364.00

Example:

COPYRIGHT © 2012 CARNES COMPANY

ALL RIGHTS RESERVED

31006, pg 2

Visual Control Unit (VCU)

The ECM-VCU control allows accurate manual adjustment and
monitor of fans using Regal-Beloit ECM Motor.

The ECM-VCU features a 4 digit LED numerical display to
allow easy reading in dark spaces. Watch the display and set
the flow index with a screwdriver to adjust. Twenty seconds
later, the display shows the motor RPM. Then, the display
periodically alternates between the flow index and motor RPM.

The ECM-VCU may also be used where automation systems
only turn the fan on or off.

Front of VCU

Back of VCU Control Unit

Specifications:

Power NEC Class II Only

24 Vac ± 20% 50/60 Hz
4 W, 6 VA

Flow Index
Adjustment 270° rotation F Off-0-100
RPM 0-2000 RPM ± 2%

Outputs Go & Vspd 24 Vdc @ 20 mA
ECM 2.3 Set for Vspd Operation

Set Status Flag (7) to RPM Thermal
Stability >0.01 %/°F
Operating 0°F to 130°F (-18°C to 55°C)

Environment 10-80% rh
Connections 1/4 Tabs

Automatic Control Unit (ACU)

If digital controls are being used on the project it is possible to
control the speed of the ECM motor with a 0-10V control
signal using the ACU unit. The on/off signal is provided at a
24V input. Another option is to turn the motor on/off with a 0­1V signal and to use the 2-10V for speed control.

The ECM-ACU allows remote adjustment of the output from
0% to 100% of the programmed control range. A LED on the
control continuously flashes out the flow index (percent of the
programmed control range), so instruments are not required to
read the value.

The "P" version provides ON/OFF control by switching the
motor's "GO" control when the input signal drops below the
2 volt (4 mA) operating point.

The green LED continuously indicates the flow index. After a
pause, the LED flashes out the tens digit, then the units digit
of a number (percent) between 1 and 99. Two extra long
flashes indicate a flow index of 0%. Long flashes represent the
tens digit, and short flashes represent the units digit. A flow
index of 23%, flashes two longs and three shorts.