16 Channel 4-20mA Analog to Fiber Converter | 1+1 Optical Fiber Backup, Fiber Cut Maintenance Function

This product adopts a large-scale FPGA design and original technology, which can simultaneously support 1~16 channels of analog signal (current/voltage) transmission to 1+1 backup optical fiber. When the main optical fiber breaks, the backup optical fiber works. The device adopts a dual power supply, high-performance FPGA programmable device, no MCU processing, high-speed conversion, the sampling frequency can reach 20KHZ, 12-bit AD conversion chip, which solves the problems of electromagnetic interference, ground ring interference, and lightning damage, and greatly improve Control signal reliability, security and confidentiality, and also solve the problem of limited cable transmission distance.

● The device is used in pairs, the signal input of the local end, and the signal output of the opposite end; 

● Two optical interfaces, support 1+1 optical backup. When the main fiber is broken, switch to the backup fiber. When the main fiber is normal, then switch to the main fiber. The switching time of the main and standby fibers is less than 1ms, and the fiber switching will not affect the transmission of the status of the switch;

● Support 4~20mA, 1-16 channels of current; or support 0~10V/0~5V, 1-16 channels of voltage; 16 channels of analog input and output can be combined arbitrarily; 

● The AD/DA channels of 16 analog quantities adopt FPGA parallel reading and writing, non-MCU sequential reading and writing mode, and the delay of each analog quantity is less than 0.1ms;

● Each channel of analog reads high-speed sampling data through FPGA, and the sampling rate is 20K times per second, which is much higher than similar products in the market;

● After the fiber is cut or the input device is powered off, the analog output will keep the value before the latest fiber cut, and the DIP switch will be used to enable it. When this function is not enabled, the analog value will be 0MA or 0V after the fiber is cut;

● Multi-mode fiber/single-mode fiber is optional, multi-mode can transmit 2KM, single-mode can transmit 20KM, ST/SC/FC interface is optional;

● With signal fault protection function; will display all-round electrical interface and optical fiber operating status;

● 4-20ma interface anti-radar to IEC61000-4-5 (8/20μS) differential mode: 6KV, impedance (2Ω); common mode: 6KV, impedance (2Ω) standard;

● Support a wide range of AC and DC input, support internal isolation, redundant dual power input, power supply supports overload protection, and anti-reverse connection protection;

● Comply with industrial level 4 electromagnetic compatibility requirements;

● Super lightning protection function: lightning protection, anti-inductive high voltage, anti-surge, etc.;

● No fan for efficient heat dissipation, reducing repair time;

● IP40 shell protection level, able to withstand the test of harsh environments;

● Rail or wall-mounted installation;

● Wide temperature type: working temperature -40℃~ +85℃;

● All models have passed the 100% oven test, warranty period: 5 years.

● Fiber

Optical port: 2

Optical Fiber: Single/Dual fiber

Fiber interface: FC/SC/ST/LC(SFP)

Wavelength: 850nm/1310nm Multimode；1310nm/1550nm Single mode

Relay-free transmission distance: 20~120Km

Typical transmit power: 

Single mode 1310/1550nm: ≥-9dBm

    Multimode 850nm: -18dBm

    Multimode 1310nm: -25dBm

Receiving sensitivity range: -28dBm~- 40dBm

● Current Analog  

Input and output range: 0~20mA (including 4~20mA)

Resolution: 12 bits

Sampling rate: 20K times/second

Time delay: <0.1ms

Maximum load capacity: 600Ω

Input resistance: 125Ω

Accuracy: 0.4% (room temperature)

● Voltage Analog

Input and output range: 0~10V (including 0~5V)

Resolution: 12 bits

Sampling rate: 20K times/second

Time delay: <1ms

Maximum load capacity: 600Ω

Input resistance: 100ΚΩ

Accuracy: 0.4% (room temperature)

● Environmental Index

Working temperature: -40℃—+85℃

Storage temperature: -40℃—+85℃

Working humidity: 0%—95% (non-condensing)

MTBF: >100,000 hours