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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.
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 |
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