Intrinsically Safe Current Analog Input Safety Module

Intrinsically Safe Current Analog Input Safety Module


The UW5862S intrinsically safe current analog input safety module from UWNTEK supplier can be directly connected to the dangerous side transmitter, isolates the electrical signal generated by the transmitter from the dangerous side and transmits it to the safe side, and provides 24V isolation for the transmitter on the dangerous side. power supply.

The UW5862S Intrinsically Safe Current Analog Input Safety Module realizes program-controlled amplification, data conversion, fault diagnosis, digital filtering, linear correction, engineering conversion and other functions of a single 4~20mA current analog input channel. This product has passed the inspection in accordance with GB3836.1 and GB3836.4 standards and obtained the explosion-proof certificate. It is suitable for installation and use in safe areas, and can be used with intrinsically safe equipment in Zones 0, 1 and 2 of explosive gas hazardous locations. This product is designed in accordance with the GB/T20438 IEC61508 standard, meets the relevant requirements of SIL3, and can be used in safety circuits.

Intrinsically Safe Current Analog Input Safety Module Features:

The system automatically identifies the module type and enables plug-and-play;

Supports 4~20mA current signal input, full range and high accuracy;

The module adopts 1oo2D architecture, with 2 sets of channels for independent sampling and hardware diagnosis, and output after safe voting;

The channel adopts independent ADC chip sampling, which has the characteristics of high precision and high stability;

Complete isolation between modules and systems, and between modules, completely shutting out external interference;

20mA output distribution voltage >15V, directly distributes power to the on-site two-wire transmitter, reducing supporting costs and engineering volume, significantly

Improve system anti-interference and stability;

Supports signal program-controlled amplification, data conversion, channel input diagnosis, digital filtering, linear correction, engineering conversion and other functions;

It is used in safety circuits and has relatively complete module fault diagnosis functions, including over- and under-voltage diagnosis of power supply circuits and channel faults.

Diagnosis, ADC fault diagnosis, main crystal oscillator diagnosis and other hardware diagnostic functions, as well as CPU diagnosis (general register diagnosis, stack

Stack pointer diagnosis, RAM diagnosis, Flash diagnosis, etc.), interrupt diagnosis, communication diagnosis, peripheral driver diagnosis and other software diagnosis

Break function;

When the module diagnoses a fault, the system quickly responds to the safety action corresponding to the fault to ensure production safety;

Intrinsically Safe Current Analog Input Safety Module Technical Parameters:

parameter name Technical indicators
Rated input voltage 24VDC (21. 6 ~ 26. 4VDC)
input signal Current: 4~20 mA
common mode rejection ratio ≥120dB
Series mode rejection ratio ≥60dB
Input precision ±0. 2%F.S.
safety accuracy ±2%F. S.
Distribution voltage Open circuit voltage <27V, distribution voltage ≥15V when current is 20mA
Security system capabilities SC3
security integrity SIL3
Safety circuit fault diagnosis Open circuit, short circuit, transmitter failure
Dimensions 115mm×112mm×13mm
Power consumption 1W
Intrinsically safe parameters A, C side:
Uo=27. 8VDC, Io=117mA, Po=814mW, Um=250VAC/DC
IIC: Co=0. 084uF, Lo=2. 4mH; IIB: Co=0. 659uF, Lo=7. 2mH;
IIA: Co=2. 18uF, Lo=19. 2mH.
C and D terminals:
Uo=27. 8VDC, Io=2. 1mA, Po=14. 6mW, Um=250VAC/DC
II C: Co=0. 084uF, Lo=1000mH; IIB: Co=0. 659uF, Lo=1000mH; IIA: Co=2. 18uF, Lo=1000mH

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