Highlights
- In- and outputs galvanically isolated
- 1000 V rms of CMV isolation
- Customized signal adjustment
- Low power consumption
- Standardized output signals
Technical Data
General
In many applications of measuring and control technology, potential separations are necessary. The constantly growing use of microprocessors frequently entails unavoidable ground loops. For the elimination of such problems, as well as for the protection of these systems in case of a fault, a galvanic separation is inevitable. For many applications, particularly with high common-mode voltages, there is almost no alternative to the use of isolating signal conditioners. The ERMA isolating signal conditioner type S 988 is developed for industrial use. It serves a) for the galvanic separation of input and output signal, b) for the signal adjustment into a scaled output signal.
Input
| Input Variable | Direct current or direct voltage |
|---|
| Voltage | 0…30 mV to 0…300 V |
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| – Impedance | >100 k to 10 MOhm |
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| Current | 0…1 mA to 0…100 mA |
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| – Voltage drop | max. 150 mV |
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Output
| Output Variable | Direct current or direct voltage |
|---|
| Voltage | 0…10 V |
|---|
| – Load capacity | 10 mA |
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| Current | 0/4…20 mA |
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| – Burden | max. 500 Ohm |
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Power Supply
- 230 V AC isolated
- optional 115 V AC isolated
- optional 18–36 V DC isolated
