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ECM Motor - troubleshooting Manual

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ECM MOTOR

TROUBLESHOOTING

ECM Motor Power and Control Connectors

ECM Motor Power Cable - 120 VAC

ECM Motor Power Connector
(120/240/277 VAC).

ECM Motor Control Connector 16 Wires
for programming 4 Wires for basic
control.

NOTE:

Connectors are keyed to resist the

cables being inserted incorrectly.

Black - Hot Wire (120V)

White - Neutral Wire

Green - Earth Ground Wire

Jumper Wire - This sets motor to 120V

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Содержание ECM Series

Страница 1: ...v100 Issue Date 12 21 20 2020 Price Industries Limited All rights reserved MANUAL TROUBLESHOOTING ECM Motor ECM ECM DX Series ...

Страница 2: ... Motor Power Cable 120 VAC 2 ECM Motor Power Cable 240 277 VAC 3 NOTE If a 120 VAC cable is used with jumper and 277 VAC is applied to the motor it will be destroyed ECM Motor Troubleshooting Checklist 3 ECM Speed Controller 4 Manual Mode 4 BAS Mode 5 Wiring and Cables 9 Typical Wiring Diagram 14 ...

Страница 3: ...ts own torque and RPM in real time and uses the application specific program created in Price s lab to either speed up or slow down with any changes to either Essentially as RPM begins to drop due to increases in system pressure torque increases to bring the RPM up and vice versa This transition happens seamlessly as the motor is running Constant Torque There are instances where a constant airflow...

Страница 4: ...CM Motor Power Cable 120 VAC ECM Motor Power Connector 120 240 277 VAC ECM Motor Control Connector 16 Wires for programming 4 Wires for basic control NOTE Connectors are keyed to resist the cables being inserted incorrectly Black Hot Wire 120V White Neutral Wire Green Earth Ground Wire Jumper Wire This sets motor to 120V ...

Страница 5: ...eck that blower wheel can be spun freely Motor will go into a locked rotor fault if too much resistance is sensed upon start up and motor will fail to start Motor runs but slowly Turn up Clockwise POT DIAL on ECM speed controller See ECM Speed Controller Section ECM motor may have wrong program example size 20 program but motor is in a size 40 box See ECM Programming Section Check ECM motor has pr...

Страница 6: ...sely the voltage output must be measured Using a standard multimeter on a DC voltage setting the and tabs on the board can be measured The output is 0 5 VDC POT Voltage Motor 0 1 VDC Off 1 4 5 VDC 0 100 Control 4 5 5 VDC 100 SAMPLE LABEL applied to factory programmed motor For each type of terminal unit and fan coil there are equations in the unit s service and installation manual that will relate...

Страница 7: ... scale is double the POT scale Therefore whatever voltage is calculated for a specific CFM using the equations the voltage must be doubled in order to get that CFM by sending a BAS signal For example Size 50 FDCA2 with 277 volt ECM whose volts vs CFM equation is CFM 672 29 VDC 572 45 If the fan powered terminal requires a fan flow controlled by the BAS of 2000 CFM rearranging the equation we get C...

Страница 8: ...st OFF 0 1 VDC at POT taps 2 Manual Mode POT adjust Control 0 100 1 5 VDC at POT taps 3 BAS Mode 1 2 VDC signal OFF 1 2 VDC at BAS taps 4 BAS Mode 2 10 VDC signal Control 0 100 2 10 VDC at BAS taps LED On Steady of stays OFF Fault Mode Measure input voltage ensure 24 VAC 10 Check wiring to speed control ensure 24 VAC HOT and Common are not reversed Cycle 24 VAC power to unit Check BAS input wiring...

Страница 9: ...0 1 VDC Local control mode using push buttons Local setpoint can be adjusted from 0 100 using push buttons 1 2 VDC Motor Off Recommended sending a 1 5 VDC signal to command motor off 2 9 VDC Modulating Control 2 9 VDC modulates motor from 0 100 9 10 VDC Maximum Speed Motor is running at maximum speed 100 Display Mode Range L SEt Local Setpoint Manual speed adjust mode use UP DOWN to adjust 0 100 r...

Страница 10: ...late Shipping Weight 100 grams 0 220 lbs ECM Deluxe Speed Controller Hardware Specs Analog RPM Feedback A two wire connection supplies an analog 0 10 VDC signal that is directly proportional to the MOTOR 1 RPM The range is 0 2500 RPM and it will output a proportional 0 10 VDC signal If a dual blower system is used only the RPM of motor 1 can be read NOTE The minimum speed of an ECM is approximatel...

Страница 11: ...an systems The control cable with RED connector must be plugged into the circuit board correctly See Figure 4 and Figure 5 MTR1 Jack ECM Control Cable NOTE Orientation FIGURE 5 ECM STANDARD SPEED CONTROLLER WITH CONTROL CABLE PROPERLY CONNECTED NOTE Connector Orientation The red connector is an AMP MTA connected It is keyed to only go in one way however it can and has been forced in backwards NOTE...

Страница 12: ...an systems The control cable with RED connector must be plugged into the circuit board correctly See Figure 4 and Figure 5 MTR1 Jack ECM Control Cable NOTE Orientation FIGURE 5 ECM STANDARD SPEED CONTROLLER WITH CONTROL CABLE PROPERLY CONNECTED NOTE Connector Orientation The red connector is an AMP MTA connected It is keyed to only go in one way however it can and has been forced in backwards NOTE...

Страница 13: ...GO SIG White Pin 2 Common Black Pin 3 Common Green Pin 4 9 30 VDC PWM SIG Red MTR1 MTR2 NOTE There are two motor output jacks MTR1 MTR2 They are in parallel so either one can be used Both jacks are used on dual blower units Left to right 1 2 3 4 NOTE If colors are different than shown here ensure wires are still going to correct position MOTOR END OF CONTROL CABLE White 1 Black 2 Green 3 Red 4 ...

Страница 14: ...D CONTROLLER END OF CONTROL CABLE Pin 1 Unused Pin 2 Unused Pin 3 Common Blue Pin 4 9 30 VDC PWM SIG Yellow MTR1 MTR2 NOTE There are two motor output jacks MTR1 MTR2 They are in parallel so either one can be used Both jacks are used on dual blower units NOTE If colors are different than shown here ensure wires are still going to correct position ...

Страница 15: ...bleshooting Manual ECM Motor TROUBLESHOOTING Accessible behind removable panel on external casing fastened by 4 screws Motor specification displayed on cover of external casing CONTROL CABLE MOTOR CONNECTION CONTROL CABLE MOTOR CONNECTION ...

Страница 16: ...y switching 24 VAC power to the ECM speed controller It is not recommended to switch the main 120 240 277 VAC power on and off This is because the ECM motor has large capacitors that cause a current surge when turned on This could cause a significant power spike if many units are turned on at once Typical Wiring Diagram ...

Страница 17: ...is document contains the most current product information as of this printing For the most up to date product information please go to priceindustries com 2020 Price Industries Limited All rights reserved ...

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