Isolation and Conversion of mV–Signals in Low-Cost Applications
With the Isolation Amplifier for Shunt Voltage DS 7400 DRAGO offers a cheap alternative for industrial standard applications.
- Cost optimized design
Economical solution for standard applications - Calibrated signal setting
Input and output range can be set by using DIP switch – without any further adjustment - Universal power supply for 20...253 V AC/DC
Applicable world-wide for all common supply voltages - 3-port isolation
Protection against erroneous measurements due to parasitic voltages or ground loops - Ultra-small-sized housing
12.5 mm housing with plug-in screw terminal blocks - Maximum reliability
No maintenance costs - 5 Years Warranty
The Shunt Isolation Amplifier DS 7400 is used for separation and conversion mV-signals such as those frequently used for current measuring with shuntresistors or other applications. Its high level of reliability and cost optimized design make the DS 7400 the first choice in its class!
The desired input and output range can be easily set by using DIP switch and due to the calibrated range selection no further adjustment is necessary.
The slim housing with 12.5 mm width saves space in your switch cabinet and facilitates by the practical plug-in screw terminal blocks the assembly.
For range selection a simple housing unblocking is installed which makes it possible to reach easily all control elements also on the DIN-rail.
In cause of the new universal power pack for 20...253 V AC/DC the Isolation Amplifier DS 7400 is applicable world-wide for all common supply voltages. To control the power supply a green LED is installed on the front panel.
Input
| Input signals | 0 ... 60 mV, 0 ... 150 mV, terminal selectable |
| Input resistance |
> 25 kOhm |
| Input capacitance | Approx. 1 nF |
| Overload | ± 30 V |
Output
| Output signals | 0...10 V, 0...20 mA, 4...20 mA, switch selectable | |
| Load | Current output Voltage output |
≤ 10 mA (1 kOhm at 10 V) ≤ 10 V (500 Ohm at 20 mA) |
| Offset | 20 µA / 10 mV | |
| Ripple | < 20 mVrms | |
General data
| Transmission error | 0,3 % of measured value | |
| Temperature coefficient 2) | 150 ppm/K of final value | |
| Cut-off frequency (-3 dB) | Approx. 1 kHz | |
| Test voltage | 2.5 kV, 50 Hz Input against output against power supply |
|
| Working voltage 3) (Basic Insulation) |
Up to 600 V AC/DC for overvoltage category II and pollution degree 2 acc. to EN 61010-1 between all circuits. | |
| Ambient temperature | Operation Transport and storage |
–10 °C to +60 °C –20 °C to +80 °C |
| Power supply | 20 ... 253 V AC/DC |
AC 48 ... 62 Hz, approx. 3 VA DC approx. 1.5 W |
| EMC 4) | EMVG, EN 61326 -1 | |
| Construction | 12.5 mm housing, protection class: IP 20 | |
| Weight | Approx. 100 g | |
- Factory setting
- Average TC in specified operating temperature range
- As far as relevant the standards and rules mentioned above are considered by development and production of our devices. In addition relevant assembly rules are to be considered by installation of our devices in other equipments. For applications with high working voltages, take measures to prevent accidental contact and make sure that there is sufficient distance or insulation between adjacent situated devices.
- Minor deviations possible during interference
Bold: Factory setting for DS 7400 AG
Terminal assignments
Wire cross-section max. 2,5 mm², Multi-wire connection max. 1 mm² (two wires with same cross-section)
| 1 | Input + 60 mV |
5 | Output + |
| 2 | Input - | 6 | Output - |
| 3 | Input + 150 mV | 7 | Power supply ~ |
| 4 | Input - | 8 | Power supply ~ |
| Devices | Order No. |
| Shunt Isolation Amplifier | DS 7400 AG |