DatasheetThe Isolation Amplifier iS 78 is used for isolation and conversion of bipolar and unipolar mV-Signals such as those frequently used for current measuring with shuntresistors or other applications with low sensor voltages.
For applications where one signal combination only is used, the Isolation Amplifier IS 78 offers a cost-effective alternative.
A cross-connector for the auxiliary power supply ensures fast and easy installation. The slim housing with 11.2 mm width saves significant space on the DIN-rail. If required a measuring range compensation can be performed at the Zero/Scan potentiometers behind the front cover.
Analog signal processing guarantees precise measured values with short response times and outstanding signal reproduction at the output. Protective Separation and the 24 V AC/DC power supply make the IS 78 universally applicable for all measurement and industrial applications, as well as for building automation.
Product line
| Devices | Order No. | ||
|---|---|---|---|
| Shunt/mV Isolation Amplifier |
IS 78 P – | X | X |
| Input | 0 … 60 mV | 0 | |
| ± 60 mV | 1 | ||
| 0 … 100 mV | 2 | ||
| ± 100 mV | 3 | ||
| 0 … 150 mV | 4 | ||
| ± 150 mV | 5 | ||
| 0 … 300 mV | 6 | ||
| ± 300 mV | 7 | ||
| Output | 0 … 10 V | 6 | |
| 2 … 10 V | 7 | ||
| 0 … 5 V | 5 | ||
| 1 … 5 V | 8 | ||
| 0 … 20 mA | 2 | ||
| 4 … 20 mA | 4 |
Technical Data
Input
| Input signal | 0 to 60 mV, 0 to 100 mV, 0 to 150 mV, 0 to 300 mV see product line ±60 mV, ±100 mV, ±150 mV, ±300 mV |
| Input resistance | > 100 kOhm |
| Overload | ≤ 30 V |
Output
| Output signal | 0 to 10 V, 0 to 5 V, 0 to 20 mA see product line 2 to 10 V, 1 to 5 V, 4 to 20 mA |
|
| Load | Voltage output Current output |
≥ 2 kOhm ≤ 500 Ohm |
| Residual ripple | < 10 mVrms | |
General Data
| Transmission error | < 0,2 % full scale | |
| Temperature coefficient 1) | < 0,02 %/K | |
| Cut-off frequency -3 dB | 500 Hz | |
| Response time | 2 ms | |
| Test voltage | 3 kV AC, 50 Hz, 1 min., input against output against power supply |
|
| Working voltage 2) (Basic Insulation) |
600 V AC/DC for overvoltage category II and pollution degree 2 acc. to EN 61010-1 |
|
| Protection against electrical shock 3) |
Protective separation according to EN 61140 by reinforced insulation in accordance with EN 61010-1 up to 300V AC/DC for overvoltage category II and pollution degree 2 between all circuits. |
|
| Ambient temperature | Operation Transport and storage |
–20 °C to +60 °C (–4 °F to +140 °F) –35 °C to +85 °C (–31 °F to +185 °F) |
| Power supply | 24 V AC/DC, ± 15 % | AC: 48 to 62 Hz, approx. 2 VA DC: approx. 0.7 W |
| EMC 3) | EN 61326 -1 | |
| Construction | 11.2 mm (0.44″) housing, protection class: IP 20 mounting on 35 mm DIN rail acc. to EN 60715 |
|
| Connection | Wire cross-section max. 2.5 mm² | |
| Weight | Approx. 50 g | |
- Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
- For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
- Minor deviations possible during interference.