- No additional supply voltage required
- Zero/span adjustment
- Analog, unipolar and bipolar, standard signals at input
- Calibrated scale switching
- Switchable max. operating frequency
- Safe 2-way isolation with 2.5 kV test voltage per EN 61140
The WAGO 857 series single-channel isolation amplifier features a DIP switch and is loop-powered via its output. It supports a wide range of analog input signals, including various current and voltage ranges, and provides a 4-20mA analog output. The device operates on a supply voltage of 8-30Vdc, with nominal values of 12Vdc or 24Vdc. It includes Push-in CAGE CLAMP spring connections for easy wiring and is designed for DIN-35 rail mounting with a compact 6mm width. The amplifier is rated for an ambient temperature range of -25°C to +70°C and has an IP20 protection rating, equivalent to model 857450.
- configuration options:
- DIP switch
- conformity marking:
- CE
- connection technology:
- Push-in CAGE CLAMP
- country of origin sales organisation germany:
- DE
- depth from upper edge of din rail:
- 97.8 mm / 3.85 inch
- emc emission of interference:
- EN 61000-6-3
- emc immunity to interference:
- EN 61000-6-2
- fine stranded conductor:
- 0.34 2.5 mm / 22 14 AWG
- fire load:
- 0.000 MJ
- height:
- 94 mm / 3.701 inch
- input current max:
- 50 mA
- input resistance current input:
- ¤ 50
- input resistance voltage input:
- 1 M
- input signal current:
- 5 mA: 0 5 mA: 10 mA: 0 10 mA: 2 10 mA: 20 mA: 0 20 mA: 4 20 mA
- input signal type:
- Voltage || Current
- input signal voltage:
- 1 V: 0 1 V: 2 V: 0 2 V: 5 V: 0 5 V: 1 5 V: 10 V: 0 10 V: 2 10 V: 20 V: 0 20 V
- input voltage max:
- 30 V
- limit frequency:
- 100 Hz / 30 Hz (configurable via DIP switch)
- load impedance current output:
- ¤ 600
- mounting type:
- DIN-35 rail
- operating altitude max:
- 2000 m
- output signal current:
- 4 20 mA
- output signal type:
- Current
- packaging type:
- Bag
- power supply type:
- Loop-powered (via output)
- relative humidity:
- 5 95 % (no condensation permissible)
- solid conductor:
- 0.08 2.5 mm / 28 14 AWG
- step response typ:
- 3.5 ms
- strip length:
- 9 10 mm / 0.35 0.39 inch
- supply voltage:
- DC 8 30 V (Power is derived from the output circuit.)
- surrounding air temperature operation:
- -25 70 C
- surrounding air temperature storage:
- -40 85 C
- temperature coefficient:
- ¤ 0.01 %/K
- test voltage input output supply:
- AC 2.5 kV: 50 Hz: 1 min
- transmission error typ:
- ¤ 0.1 % of upper-range value
- weight:
- 37.904 g
- width:
- 6 mm / 0.236 inch
- zero span adjustment:
- 5 % of upper-range value
