ACX - AC Current Isolator and Transmitter (2-Wire)
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Description The 2-wire ACX Current Transmitter accepts standard AC inputs from current and potential transformers. It converts the input to a proportional current or voltage signal for monitoring motor currents, and interfacing with a distributed control system or another process instrument. The ACX, for personal safety, incorporates an internal toroidal input transformer that steps a 0-5 amp ac current input to 0-5 milliamps. The transformer also isolates the input and enables the ACX to withstand large momentary surges of input current. For additional safety, the ACX can be ordered with the toroidal input transformer (-EM option) mounted outside the unit. This option permits servicing without opening the secondary of the customer current transformer. The ACX is offered with a variety of other options including complete RFI/EMI protection. For details, see the back page. The ACX is offered in high-density DIN-style and hockey-puck housings. The hockey-puck housing mounts on a relay track or in an explosion-proof enclosure. Features • Wide range of inputs and outputs. Interfaces almost any current/voltage device to any process control system, readout device, or process control instrument. Factory Mutual Research Corporation (FMRC) Explosion-Proof – HP in explosion-proof enclosure: Class I, Division 1, Groups B, C, D Dust Ignition-Proof – HP in explosion-proof enclosure: Class II, Division 1, Groups E, F, G Suitable for: Class III, Division 1 CENELEC approved by ISSEP/INIEX Explosion-Proof – HP in explosion-proof enclosure: EExd IIC; T6 Standards Association of Australia (SAA) Approved Type N – DIN: Ex N IIC; T6; IP65 Explosion-Proof – HP in explosion-proof enclosure: Exd IIC; T6; IP66 • Complete isolation. Eliminates signal inaccuracies caused by ground loops. 1500Ω with Ω 42Vdc Supply 42Vdc Maximum (based on CSA listing) measured at the input terminals 20 30 40 50 Power Supply (Volts dc) The load capability of the ACX increases with the power supply. © 1999 Moore Industries-International, Inc. LIMIT 60Vdc MAXIMUM WITHOUT DAMAGE Canadian Standards Association (CSA) General (Ordinary) Location – DIN/HP Explosion-Proof – HP in explosion-proof enclosure: Class I, Groups B, C, D; Class II, Groups E, F, G; Class III Load Capability (ohms) • Low output ripple/high common mode rejection. Low output ripple and high common mode rejection mean output signals are exceptionally accurate, stable, and noise-free.

Specifications Performance Performance Load Capability: Calibration Capability: (continued) R (Load) = E - 12 ±0.2% of span (linearity l and repeatability); ±0.5% of Ripple: 10mV peak-tospan at 0-10Vac range and peak maximum lower Isolation: Input and output Ambient Range: -20°C to +82°C are transformer isolated up Temperature (-20°F to 180°F) to 500Vdc Effect: ±0.015%/°C Overload Capability: 35 (±0.01%/°F) over above amps for 30 seconds with range EM option; 150% overvoltage with voltage input Adjustments Type: External multiturn potentiometers Span: With full-scale input, adjusts output...