Intrinsically Safe Current Analog Output Safety Module

Intrinsically Safe Current Analog Output Safety Module


The UWNTEK high quality UW5866S intrinsically safe current analog output safety module can be directly connected to the dangerous side actuator to isolate and transmit the current signal from the safe area to the dangerous area.

UW5866S Intrinsically Safe Current Analog Output Safety Module implements the verification, latching, protection and output of single-channel analog output data. It can maintain data output or output specified set values under abnormal conditions according to configuration requirements, and supports online replacement. 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 GB/T20438 and IEC61508 standards, meets the relevant requirements of SIL3, and can be used in safety circuits.


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

Support analog 4~20mA output;

The module adopts 1oo2D architecture, with two sets of channels independently outputting and mining diagnosis after safe voting;

Automatically performs ambient temperature compensation and zero point and gain correction, no adjustment or maintenance required;

Online automatic diagnosis and running status display, rapid identification of fault points, automatic identification of disconnections;

Complete isolation between modules and systems, and between modules, keeping external interference out;

Abnormal status configuration function, you can choose to output hold or output user set value;

Surge protection and online plug-in support circuit support module online plug-in and online replacement;

Low ripple, low temperature drift, high efficiency, high stability, high withstand voltage isolation power supply design, with multiple protections such as soft start, input short circuit protection, output power limit, distribution output current limit, etc.;

It is used for safety loops and has relatively complete module fault diagnosis functions, including power supply circuit over- and under-voltage diagnosis, channel fault diagnosis, ADC fault diagnosis, main crystal oscillator diagnosis and other hardware diagnostic functions, as well as CPU diagnosis (general register diagnosis, stack pointer diagnosis, Software diagnostic functions such as RAM diagnosis, Flash diagnosis, etc.), interrupt diagnosis, communication diagnosis, peripheral driver diagnosis, etc.;

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

Technical parameters

parameter name Technical indicators
Rated input voltage 24VDC (21. 6 ~ 26. 4VDC)
input signal Current: 4~20mA
common mode rejection ratio ≥120dB
Series mode rejection ratio ≥60dB
Output accuracy ±0. 2%F.S.
The output voltage Open circuit voltage<24.8V
Security system capabilities SC3
security integrity SIL3
Safety circuit fault diagnosis open circuit
Isolation impedance 20MΩ@500V
load capacity 550Ω@4~20mA
Dimensions 115mm×112mm×13mm
Power consumption 1W
Intrinsically safe parameter matching principle C and D terminals:
Uo=28VDC, Io=93mA, Po=651mW, Um=250VAC/DC IIC: Co=0. 05uF, Lo=2. 4mH;
IIB: Co=0. 65uF, Lo=7. 2mH;
IIA: Co=2. 15uF, Lo=19. 2mH

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