857-409 WAGO Signal Relays

Wago 857-409 is an amplifier designed for sensor applications, featuring single-channel bipolar isolation with zero/span adjustment capabilities. It operates on a supply voltage range of 16.8-26.4Vdc, with a nominal 24Vdc, and does not require an AC supply voltage. The device offers push-in CAGE CLAMP spring connections for easy installation and utilizes a DIP switch design for configuration. It is designed to operate within an ambient air temperature range of -25°C to +70°C and can be stored in temperatures ranging from -40°C to +85°C. The amplifier supports a control voltage (DC) and employs an IP20 communication protocol. It is rated for an insulation voltage (Ui) of 6 mm and is suitable for mounting on a DIN-35 rail. The device's dimensions are H94mm x W6mm x D97.8mm, and it features a response time tailored for various analog input and output ranges, including -10...+10mA, -20...+20mA, 0-10mA, 2-10mA, 0-20mA, 4-20mA, -5...+5Vdc, -10...+10Vdc, 0-5Vdc, 1-5Vdc, 0-10Vdc, and 2-10Vdc. It has a mechanical resistance for an analog output matching the input specifications, with a maximum load current of 25mA at 24Vdc nominal load. The transmission error is less than or equal to 0.1%, and the temperature coefficient is less than or equal to 0.01%/K. The device can operate in environments with 5-95% relative humidity, provided there is no condensation.