INSTALLATION GUIDE CURRENT MONITORING TM H809 TM 809 Solid-Core Current Switch, Adjustable Trip Point Installer’s Specifications Sensor Power Induced from the monitored conductor Amperage Range 0.75 to 50 A continuous* Insulation Class 600 VAC RMS (UL) Frequency Range 50/60 Hz Temperature Range-15° to 60°C (5° to 140°F) Humidity Range 10-90% RH non-condensing Hysteresis 10% typical Status Output N.O. 0.2 [email protected] VAC, polarity sensitive Off-State Resistance 1 MΩ On-State Resistance20 Ω Terminal Block Max. Wire Size 14 AWG Terminal Block Torque (nom.) 4 in-lbs (0.45 N-m) Agency Approvals UL508 E150462 The product design provides for basic insulation only. * When operating at 50 Hz, low threshold may be 0.9 A. DANGER 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. 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. PAGE 1 4. Route the conductor through the sensor’s center window and slip the assembly into the mounting bracket. DIMENSIONS DDC CONTROLLER Fan or Pump Z201764-0E 3. Wire the output connections and relay between the sensor and the controller (solid-state contact). 6. Calibrate sensor with load running normally. DI + Motor 1. Locate a mounting surface for the removable mounting bracket that will allow the monitored conductor to pass through the center window when it is installed and that will keep the device at least 1/2” from any uninsulated conductors. Determine cable routing for the controller connection, allowing wiring to reach the mounting location. 5. Secure enclosure and reconnect power. WIRING EXAMPLE CONTACTOR Disconnect and lock out power to the enclosure containing the conductor to be monitored. 2. Drill holes to mount the bracket to the chosen surface using the included screws. NOTICE • • • • INSTALLATION Removable/Adjustable Mounting Bracket 0.9" (23 mm) 0 0.7" (18 mm) 2.8" (71 mm) 0.4” x 0.2” Slot (x2) 1.7 (43 mm) 1.1" (27 mm) 2.3" (58 mm) ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 01121 Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries. INSTALLATION GUIDE H809 TM OPERATION CALIBRATION The H809 is a current-sensitive switching device that monitors current (amperage) in the conductor passing through it. A change in amperage in the monitored conducter that crosses the switch threshold plus the hysteresis value will cause the resistance of the status output to change state, similar to the action of a mechanical switch. The setpoint is adjustable through the action of a 20-turn potentiometer (see CALIBRATION section). The status output is suitable for connection to building controllers or other appropriate data acquisition equipment operating at up to 120 volts. The H809 requires no external power supply to generate its output. Before beginning calibration, establish normal load conditions. OK! OK! A Then choose either A or B below. A. To monitor under-current (belt loss, coupling shear, status) ! STATUS OK! NOTES OK! A For load currents greater than sensor maximum rating: Use a 5 Amp (H68xx series) Current Transformer (CT) as shown. This technique can be combined with wrapping (see below) to add range for a low current load on a high current source. > 50 A (Sensor max.) 150A Status Open Setpoint 1. Turn setpoint screw clockwise until Status Open LED turns ON. STOP 2. Slowly turn the screw counter‑clockwise until the Status Closed LED just turns ON. 3. Turn the screw an Setpoint Status Setpoint Closed additional 1/4 turn counter‑clockwise for 1/4 operational margin. + 300A:5A 2.5A STOP H68xx-5A CT B. To monitor over-current (mechanical problems, seized impeller) DANGER: 5A CTs can present hazardous voltages. Install CTs in accordance with manufacturer's instructions. Terminate the CT secondary before applying current. CAUTION RISK OF EQUIPMENT DAMAGE • Derate the product’s maximum current for the number of turns through the sensing window using the following formula. Rated Max. Amps ÷ Number of Turns = Max. monitored Amps e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor • Failure to follow these instructions can result in overheating and permanent equipment damage. For load currents less than sensor minimum rating: Wrap the monitored conductor through the center window and around the sensor body to produce multiple turns. This increases the current measured by the transducer. < 0.75 A (Sensor Min.) 0.5A Z201764-0E PAGE 2 4x ! STATUS OK! OK! A Status 1. Turn setpoint screw Setpoint Closed counter‑clockwise until Status Closed LED turns ON. STOP 2. Slowly turn the setpoint screw clockwise until the Status Open LED just turns ON. 3. Turn the setpoint Setpoint Status Open Setpoint screw an additional 1/4 turn clockwise for 1/4 operational margin. + STOP TROUBLESHOOTING Problem Solution No Reading at Controller • Check sensor calibration (see above) • Check for control power at sensor (<120 VDC) • Check for amperage in monitored conductor (>0.75 A) • Verify correct polarity Setpoint screw has no stops • The setpoint screw has a slip-clutch at both ends of its travel to avoid damage. Twenty turns CCW will reset the sensor to be most sensitive. Repeat calibration above. Both LEDs are lit Unit is out of calibration. Turn screw 20 turns CCW and recalibrate. ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 01121 Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
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