SIS system DI isolated safety barrier

The SIS system DI isolated safety barrier, PFEXA-C5D11 switch input type isolated safety barrier, is a SIS system DI digital two input terminal that receives dry contact signals from hazardous areas on site. After isolation and linearization processing, it outputs to the control system or other unit combination instruments in the safe area. Intelligent switch safety barriers can collect proximity switch signals or dry contact signals from hazardous areas. This safety barrier requires independent power supply, with three terminals isolated from the input end, output end, and power supply end, with 1 in and 1 out, 1 in and 2 out, and 2 in and 2 out.

Main functions and functions

SIS system DI isolated safety barrier PFEXA-C5D11, the isolated safety barrier mainly detects switch signals from hazardous areas, isolates output after intrinsic safety processing, and provides intrinsic safety power supply to the site. Equipment connected to the site: intrinsic safety devices such as proximity switches, solenoid valves, sound and light alarms, etc. Can be used for equipment in Zone 0, Zone 1, Zone 2, IIA, IIB, IIC, T1~T6 hazardous areas.

▉ Input circuit (Exia IIC danger zone)

Input terminal numbers Terminal 9/10, 11/12

Input signal NAMUR proximity switch, dry node

Port voltage ≈ 8V

Output circuit (safe zone)

Output terminal numbers Terminal 5/6, 7/8 Output signal

Output signal relay contact

Load type: resistive load

Contact capacity 125V AC, 0.5A, 24V DC 1A

Response time ≤ 10ms

▉ Working power supply

Power terminal 3+, 4- (hot swappable)

Working voltage 18~32V DC

Power indicator LED: green

▉ Environmental conditions

Working temperature -40 ℃~80 ℃

Allow relative humidity of 10~90% RH (40 ℃) during work

Allowable atmospheric pressure during work: 80 Kpa~110 Kpa

Product Structure

Dimensions W13.5 × D100 × H115 (mm)

Weight 170g

Material ABS

Protection level IP20

Flame retardant grade UL94/V0

▉ Installation

Installation method: DIN35mm rail installation