8400100.qxp 3/20/2006 3:21 PM Page 152 Flat Pack Series 340i Isolator Diagram Isolated Transmitters PLC / DCS P + P 340i PWR + – IN + 24V DC OUT 4-20mA RLOAD Input – L – Isolation n Description n Special Features The 340i accepts a process current input and n Excellent accuracy and stability ensure reliable provides an isolated 4 to 20mA process current measurements in harsh industrial environments. output signal. n 1500V AC peak isolation (250V AC or 354V These isolators use transformer isolation to DC continuous) prevents ground loops. effectively break the electrical path between n Calibration is independent of the load to elimi- the transmitted signal and the receiving device. 340i Isolators nate load compensation adjustments This eliminates ground loops, reduces noise, and helps protect against transients for more n Zero and span adjustment enable precise DC Current Input accurate and reliable measurements. calibration. Input Range This product is also extremely easy to install. n RFI and EMI resistance minimize the effects of n 4 to 20mA DC All units are factory calibrated to eliminate any environmental noise. need for load trim adjustments. Also, up to n Low power consumption helps prevent Output Range eight isolators at a location can share a single expensive upgrades to larger power supplies. n 4 to 20mA DC Acromag 35PS power supply for a more convenient and cost-effective solution. n 25mS response time delivers fast updates to Power Requirement monitoring and control systems. n 10 to 36V DC @ 30mA n Compact, 1-inch wide housing uses less space for easier installation in control panels. Tel: 248-295-0880 Fax: 248-624-9234 e-mail: sales@acromag.com www.acromag.com 152 Flat Pack Flat Pack 8400100.qxp 3/20/2006 3:21 PM Page 153 Isolated Transmitters n Environmental n Performance n Ordering Ambient temperature range Reference test conditions Information Operating: -13 to 185°F (-25 to 85°C). Input/Output current: 4 to 20mA; output load 250 Storage: -40 to 185°F (-40 to 85°C). ohms; 77°F (25°C); 15V DC supply. Isolator Ambient temperature effect 340i-C1-Y-DIN-NCR Less than ±0.003% of output span per °F (±0.005% n Input Single-channel 4-20mA isolator. per °C) over the ambient temperature range for refer- Input ence test conditions. This specification includes the 4 to 20mA DC, input drop less than 1.5V at full-scale. Accessories combined effects of zero and span over temperature. Input current must not exceed 100mA. Power supplies Isolation Zero and span See Power Supplies on Page 199. The input circuit is electrically isolated from the output The Zero and Span trim adjustments utilize 15-turn DIN RAIL 3.0 and power circuits, allowing the input to operate at potentiometers which are accessible from the front of DIN RAIL 16.7 up to 250V AC, or 354V DC off ground, on a continu- the unit. Isolator is DIN-rail mounted. DIN rail strip, Type T, 3 inches (75mm) or ous basis (will withstand 1500V AC dielectric strength 16.7 inches (425mm) n Output test for one minute without breakdown). Complies Output with test requirements outlined in ANSI C39.5-1974 20RM-16-DIN 4 to 20mA DC. for the voltage rating specified. 19" rack-mount kit with DIN rail. Holds sixteen 340i The output shares a common with the power supply. transmitters. Noise rejection NOTE: Voltage output is not available on this unit, use Common mode: -6 dB at 60Hz, typical, 500 ohm load. 350T-N4-WM Model 350T on Page 144 if this is a requirement. NEMA 4 water-tight enclosure, wall-mount. RFI resistance Holds two 340i transmitters. Load resistance range equation Less than ±0.5%, of output span with RFI field RLOAD MAX = (Min. VDC supply - 5.0V) / 0.02A strengths of up to 10V/meter at frequencies of 27, 350T-N12-WM At 10.0V DC supply, RLOAD = 0 to 250 ohms 151 and 467 MHz. NEMA 12 oil-tight enclosure, wall-mount. At 15.0V DC supply, RLOAD = 0 to 500 ohms Holds two 340i transmitters. EMI resistance At 24.0V DC supply, RLOAD = 0 to 950 ohms Less than ±0.25% of output span effect with switch- Output limiting ing solenoids or commutator motors. 135% of full scale output, nominal. Surge withstand capability (SWC) Output ripple Input/Output terminations rated per ANSI/IEEE C37.90- Less than ±0.1% of maximum output span. 1978. Unit is tested to a standardized test waveform that is representative of surges (high frequency transient Bandwidth electrical interference), observed in actual installations. -3dB at 50Hz, typical, with 500 ohm load. Response time n Physical For a step input, the output reaches 98% of output Construction span in 25mS, typical, 500 ohm load. Circuit boards: Military grade FR-4 epoxy glass. Accuracy Terminals: Compression type, 14 AWG max. Better than ±0.1% of output span. Error includes the Case: Self-extinguishing NYLON Type 6.6 polyamide combined effects of isolator repeatability, hysteresis, thermoplastic UL94V-2, color black. General Purpose, terminal point linearity and adjustment resolution. NEMA Type 1 enclosure. Does not include sensor error. Circuit board coating: Fungus resistant acrylic confor- mal coat. n Power Mounting position: Position insensitive. Power 10.0V to 36.0V DC, 30mA at full scale, 35mA at limit. The external DC power supply is connected between the output (P) and (-) terminals. The current specified is for rated supply inputs and full scale output. Diode on isolator provides reverse polarity protection. Note: Do not exceed 36V DC peak, to avoid damage to the isolator. Power supply effect DC Volts: Less than ±0.001% of output span per volt. 60/120Hz Ripple: Less than ±0.01% of span per volt peak to peak of power supply ripple. Tel: 248-295-0880 Fax: 248-624-9234 e-mail: sales@acromag.com www.acromag.com 153