产品描述
The DRSP-I Series DC current signal splitters accept one 4 to 20 mA current input and provide two optically isolated 4 to 20 mA current outputs that are linearly related to the 4 to 20 mA current input. This provides an economical solution when one signal must be sent to two different devices. Typical applications include isolation, output splitting, output device separation and redundancy (i.e. to prevent failure of the entire loop if one device fails), or a combination of these. The input signal is filtered, amplified, split, and then passed through an opto-coupler to the output stages. Full 4-way isolation (input, output 1, output 2, power) make this module useful for ground loop elimination, common mode signal rejection,and noise pickup reduction.
Specifications
Input
Input Range: 4 to 20 mA
Input Impedance: 50 Ω typical
Input Loop Power Supply: 15 Vdc ±10%, regulated, 25 mA; May be selectively wired for sinking or sourcing mA input
Loop Status LEDs: Variable brightness LEDs indicate I/O loop level and status; One for input, one for each output
Output
Output Range:
(Output 1 and Output 2): 4 to 20 mA; 20V compliance, 1000 Ω at 20 mA
Output Linearity: Better than ±0.1% of span
Output Zero and Span: Multi-turn zero and span potentiometers for each output channel to compensate for load and lead variations; ±15% of span adjustment range typical
Output Loop Power Supplies: One for each output channel; 20 Vdc nominal, regulated, 25 mA may be selectively wired for sinking or sourcing mA output
Output Ripple and Noise: Less than 10 mVRMS
Output Functional Test: Front buttons set each output to test level when pressed; Each test level potentiometer adjustable 0 to 100% of span
General
Response Time: 70 milliseconds typical
Common Mode Rejection: 120 dB minimum
Isolation (Full 4-Way Isolation): Input 1, output 1, output 2, power; 1200 VRMS minimum
Ambient Temperature Range: -10 to 60°C (14 to 140°F)
Stability: Better than ±0.04% of span per °C
Power:
DRSP-I: 60 to 265 Vac, 50/60 Hz or 85 to 300 Vdc, 6 W maximum
DRSP-I-DC: 9 to 30 Vdc or 10 to 32 Vac 50/60 Hz, 6 W maximum
Housing: IP40, mounts to standard 35 mm (1.37″) DIN rail
Connectors: Eight 4-terminal removable connectors; 14 AWG maximum wire size
Dimensions: 45 W x 117 H x 122 mm D (1.78 x 4.62 x 4.81″); height includes connectors