Installation Guide Current Sensors Z201200-0G Page 1 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 06132 Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries. Other companies’ trademarks are hereby acknowledged to belong to their respective owners. TM HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH • Follow safe electrical work practices. See NFPA 70E in the USA, or applicable local codes. • This equipment must only be installed and serviced by qualified electrical personnel. • Read, understand and follow the instructions before installing this product. • Turn off all power supplying equipment before working on or inside the equipment. • Use a properly rated voltage sensing device to confirm power is off. DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION • Only install this product on insulated conductors. Failure to follow these instructions will result in death or serious injury. A quali ed person is one who has skills and knowledge related to the construction and operation of this electrical equipment and the installation, and has received safety training to recognize and avoid the hazards involved. NEC2011 Article 100 No responsibility is assumed by Veris Industries for any consequences arising out of the use of this material. DANGER NOTICE • This product is not intended for life or safety applications. • Do not install this product in hazardous or classified locations. • The installer is responsible for conformance to all applicable codes. • Mount this product inside a suitable fire and electrical enclosure. Product Identification Part NumberDescription H421High current monitoring, 4-20 mA analog output, scalable amperage range (1000 to 2400 A upper limit) H421SPHigh current monitoring, 4-20 mA analog output, amperage range set at factory (1000, 1200, 1400, 1600, 1800, 2000, 2200, or 2400 A upper limit, specified by customer at ordering) Product Overview The H421 and the H421SP are current transducers that sense current (amperage) in the monitored conductor. The H421 amperage range is field-adjustable, with ranges of 0-1000A thru 0-2400A possible. The H421SP is factory- set at a range with an upper limit specified by the customer upon ordering (1000A, 1200A, 1400A, 1600A, 1800A, 2000A, 2200A, 2400A, and 2400A options available for upper limits). Both devices transform the monitored current into 4-20mA DC output, suitable for connection to building controllers or other appropriate data acquisition equipment. The H421 and H421SP require a 12-30 VDC external power supply to generate their output. H421/H421SP Split-Core Current Transducer, High Current, 4-20mA Output Specifications Sensor Power30mA (max.) @12-30VDC Amperage RangeH421: 0-1000A thru 0-2400A (scalable) H421SP: Factory-set at a customer-specified upper limit (1000, 1200, 1400, 1600, 1800, 2000, 2200, and 2400 A available) Sensor Output 4-20mA Response Time2 sec. Insulation Class600VAC RMS, insulated conductors only Frequency50/60 Hz Temperature Range -15° to 60°C (5° to 140°F) Humidity Range10-90% RH non-condensing Accuracy±2% F.S. from 10% to 100% of selected current range Zero Adjustmentnominal output@0A: 4mA ± 0.5 Terminal Block Wire Size 12 to 22 AWG (3.3 to 0.3 mm2) Terminal Block Torque3.5 to 4.4 in-lb (0.4 to 0.5 N-m) Installation CategoryCat. III, pollution degree 2 This product provides basic insulation only. TMZ201200-0G Page 2 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 06132 Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries. Other companies’ trademarks are hereby acknowledged to belong to their respective owners. Installation Guide Current Sensors H421/H421SP TM Dimensions Disconnect and lock out power to the enclosure containing the conductor to be monitored. 1. Choose a location for the sensor. The monitored conductor must pass through the center window, and the sensor must be at least ½” (13 mm) from any uninsulated conductors. Determine cable routing for the controller connection, allowing the sensor to reach the conductor. 2. Wire the output connections between the sensor and the controller (4-20 mA). 3. Snap the sensor over the conductor to be monitored. 4. Secure I-bar to main body of sensor with wire ties or other securing method. Wire tie 5. Secure the enclosure and reconnect power. 6. Scale the sensor range, then scale the controller software to match the sensor’s output (see Scaling section). Installation 4.90” (125 mm) 5.50” (140 mm) 2.45” (62mm) 1.13” (29 mm) 8.13” (207 mm) 5.92” (151 mm) Motor DIGITAL CONTROL 12-30VDC Power Supply AI –+ + – Fan or Pump CONTACTORZ201200-0G Page 3 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 06132 Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries. Other companies’ trademarks are hereby acknowledged to belong to their respective owners. Installation Guide Current Sensors H421/H421SP TM WiringOutput is not polarity sensitive. 12-30 VDC external power needed. Example 1: External Power Zero Out Span 10002400 DDC CONTROLLER Power Supply AI Example 2: Powered by the controller Zero Out Span 10002400 DDC CONTROLLER AI V(COM) 4-20mA Scaling 0 10 20 30 40 50 60 70 80 90 100% LOAD CURRENT % of Set Span SENSOR OUTPUT 20mA 4mAZ201200-0G Page 4 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 06132 Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries. Other companies’ trademarks are hereby acknowledged to belong to their respective owners. Installation Guide Current Sensors H421/H421SP TM 2. Calculate the maximum and target readings. A. Determine the maximum current likely to occur in the application. The following calculation is given as an example and uses sample current values. In an actual application, any values appropriate to the application (within the range of the device) can be substituted. The H421SP is factory-calibrated. 1. Set Zero. Apply power to the sensor with no load in the monitored conductor. Turn the zero setpoint screw until the controller reads 4 mA output. B. Establish normal load conditions on the conductor. Measure this current using an external measurement device, such as a portable amp clamp. C. Calculate target output: If A = the max. current, and B = the reading from the amp clamp, then: target output = e.g. target output = = 16 mA 3. Set Span. Turn the span setpoint screw until the controller reading equals the target output. Calibration (H421 Only) Troubleshooting ProblemSolution No Reading at Controller• Confirm that a 12-30 VDC power supply is in series with the sensor output terminals and the control panel analog input terminals. • Assure that sensor core mating surfaces are clean and that the core clamp is completely closed. 1200 A 0A Controller: 4mA Output = 0A Load 0A Zero Zero Out Span 10002400 A OK! 1600 A 2400 1000 Zero Out Span 10002400 16 mA x — + 4 mA B A 16 mA x — + 4 mA 1200 1600 1200 A Controller: 16 mA Output = 1200 A Load 1200 ANext >