WIRING EXAMPLES INSTALLATION INSTRUCTIONS senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008 C-2320-L ECM, Adjustable Turn-On ECM Current Switch Failure to follow these instructions will result in death or serious injury. • Follow ALL requirements in NFPA 70E for safe work prac- tices and for Personal Protective Equipment (USA) and other applicable local codes when installing this product • Only qualified electrical personnel should install this prod- uct. • Read, understand, and follow all instructions thoroughly • Install only on insulated conductors • Lock out and tag out all power sources prior to installation. Use properly rated voltage sensing instrument to determine no voltage is present Failure to follow these instructions could result in death or serious injury. • Equipment monitored/operated by this device may start without warning. Keep clear of apparatus at all times IMPORTANT WARNINGS • Only qualified trade installers should install this product • This product is not intended for life-safety applications • Do not install in hazardous or classified locations • The installer is responsible for all applicable codes • This product must be installed in a suitable electrical enclosure Automated equipment may start without warning DANGER WARNING ! Hazard of electrical shock, explosion, and arc flash WARNING ! PRODUCT APPLICATION LIMITATION: Senva products are not designed for life or safety applications. Senva products are not intended for use in critical applications such as nuclear facilities, human implantable device or life support. Senva is not liable, in whole or in part, for any claims or damages arising from such uses. INSTALLATION 1. Determine mounting location for the sensor near the conductor to be monitored. The sensor should be located AT LEAST 1/2” from any uninsulated conductor. 2. Sensor features a flexible iris which allows the sensor to hang on the conductor if local codes permit. A bracket is included for screw mounting or attaching to DIN rail. For screw mounting, drill two 3/32” pilot holes using the bracket as a template; ensure no drill shavings are present in enclosure. At- tach bracket with screws provided. 3. Clamp sensor around INSULATED CONDUCTOR ONLY, 600VAC MAX to be monitored. 4. Snap the sensor into the mounting bracket. 5. Wire the output of the sensor to a control panel digital input loop not to exceed 30VAC/DC wetting voltage. Tighten terminals to 3.5 in-lb. Disconnect, lock out, and tag out all power supplies during installation V+ DI CONTROLLER (SINKING) (SOURCING)(AC) INSULATED PRIMARY AC CONDUCTOR 600VAC MAX V+ DI 24VAC DI V+ DI ALTERNATE CONTROLLER ARRANGEMENTS DI DI VAC GND NOTE: Device is NOT polarity sensitive. v 0.5 50 45 35 25 2015 10 5 3PZSOn startup, the sensor output will close when monitored current exceeds dial setting, and open if monitored current is below the dial setting minus the fixed hysterisis value of the current switch. Part NumberC-2320-L ECM Amperage RangeDial Setting 0.25 - 3A, (200A Max Operational) Output TypeNO, solid-state FET Output Rating1.0A@30VAC/DC Max. Temperature Rating-15~60 ° C Insulation Class 600V RMS. For use on insulated conductors only! Use minimum 75 ° C insulated conductor Sensor PowerInduced Frequency Range50/60Hz Dimensions ( LxWxH)2.94” x 2.23” x 0.82” (1.4” H with optional relay module) Sensor Aperture0.75” TROUBLESHOOTING SymptomCausesRemedy Sensor output does not change state Amperage is below sensor minimum threshold Wrap monitored conductor turns through sensor. See Tech Tips Adjustment incorrectSee SETUP procedure Testing with ohm meter yields incorrect results Solid state output may show approx. 1 ohm or less Incorrect control wiring Ensure control loop voltage is present Maximum surrounding air ambient, 60 ° C. For use in Pollution Degree 2 Environment. Revised9/16/2020 Document #152-0375-0B SPECIFICATIONS CALIBRATION AND OPERATION ECM stands for Electrically Commutated Motor. These motors are gaining popularity due to their energy savings capability for applications that don’t require the motor to always run at full speed by allowing the end-user to reduce the speed of the motor. It is important to consider the quiescent or stand-by current draw of an ECM from the on-board electronics. This stand-by current draw typically ranges from 250mA to 500mA and varies by manufacturer. This stand-by current can sometimes be enough to cause a sensitive current sensor to be in the ON state even when the motor is not actually running giving a false indication. In order to prevent this the current sensors turn-on current must be higher than the ECM stand-by current. Senva’s Adjustable Turn-On ECM Current Switch allows you to set/adjust your turn-on threshold appropriatley for your application. Set the dial so that the turn-on amperage is slightly higher than your ECM stand-by current. This will typically be around 400mA. SETUP (ALTERNATE) asdf Follow all safety precautions outlined in this manual. Follow all requirements in NFPA 70E for safe work practices and for Personal Protective Equipment (USA) and other applicable local codes when installing this product. Read all warnings carefully. 1. Dial is set from the factory to a value of about 500mA. 2. Once installed on the ECM conductor with your motor STOPPED but powered on, verify the OPEN LED is on. If OPEN LED is off adjust dial clockwise until OPEN LED is on. 3. Turn dial counter clockwise until CLOSED LED is on. This is the turn-on amperage or approximate value of your ECM stand-by current. 4. Turn dial clockwise until CLOSED LED is off and continue clockwise slightly to give a margin of operation between the on and off states. Leave dial at this setting and you’re done with the current sensor setup. SETUP (RECOMMENDED) asdf Follow all safety precautions outlined in this manual. Follow all requirements in NFPA 70E for safe work practices and for Personal Protective Equipment (USA) and other applicable local codes when installing this product. Read all warnings carefully. 1. With ECM powered on but not running measure the ECM current draw with a meter capable of measuring current. 2. Turn power off to ECM and set dial on current sensor to a value slightly higher than what you measured in step 1. Example, measurement of 500mA from meter, set dial to about 600mA. 3. Power on ECM and verify OPEN LED is on. 4. Next, run ECM at minimum speed and verify CLOSED LED is on. 5. Stop ECM but leave powered on and verify OPEN LED is on. 6. Setup is now complete. You may need to repeat steps 1 through 5 above during initial setup to get correct setting. Once adjusted the Senva ECM current switch will provide a true status output as shown in the chart above. Next >