Emerson KJ1740X1-BA1 Four Port Fiber Switch

Power Input Main Power:18-30 VDC (redundant power supply supported)

Backup Battery:No built-in backup battery (external battery powered)

Communication Interface:HART protocol, Modbus RTU, Profibus DP

Programmable Input:Supports analog input (4-20mA), digital input, and can flexibly configure sensors and input channels

Relay Output:2 relay outputs, support alarm, control of external devices and other functions

Device capacity: supports up to 4 input channels, can connect multiple sensors simultaneously

Operating temperature: -40°C to 85°C

Humidity range: 5% to 95% RH (non-condensing)

Display and operation: no built-in display; supports remote operation and configuration via external devices

Dual Channel Signal Processing：The Emerson KJ1740X1-BA1 supports dual sensor inputs from **-20 V DC to 0 V DC**, is compatible with eddy current/Hall sensors, and provides **-18 V DC sensor power supply**.

Multiple Output Interfaces

Emerson KJ1740X1-BA1 provides:

TTL pulse output: 0 V DC to +5 V DC (synchronized speed signal).

Keyed signal output: ≤24 V DC (axis positioning control).

4 mA to 20 mA current output (for PLC/DCS system).

Anti-interference design：The Emerson KJ1740X1-BA1 utilizes optocoupler isolation technology to suppress industrial electromagnetic noise interference.

Industrial Grade Environment：The Emerson KJ1740X1-BA1 has an operating temperature range of **-25 °C to +70 °C** and complies with API/CE standards, making it suitable for use in harsh environments such as petroleum and electric power.

Turbomachinery protection：Monitoring of speed/vibration of gas turbines, compressors, fans and synchronization of multiple axes by means of key signals (≤ 24 V DC).

Industrial automation：Oil/power: displacement/speed monitoring of pumps in refineries, steam turbines in power plants (input **-20 V DC to 0 V DC**, adapted to eddy current sensors).

Discrete Manufacturing：CNC machine tool/robot motion control (TTL pulse 0...+5 V DC), production line motor condition monitoring (withstand **-25°C to +70°C**).

Environmental protection and new energy：Sewage treatment pumping station monitoring, wind turbine vibration analysis (optocoupler isolation anti-interference).

Metallurgy/Mining：Crusher / mill vibration monitoring, dual-channel input synchronous acquisition of multiple parameters