Product Description
Switching output isolated safety barrier, the contact switch signal on the safe place side controls or drives the operation of on-site intrinsic safety equipment through the safety barrier, such as solenoid valves, sound and light alarms, etc. The input/output isolation performance of PRG-1701 and PRG-1721 allows the control switch to be directly connected to either side of the 24VDC power supply circuit.

Main technical specifications
Working power supply: 20V-35Vdc
Power consumption: approximately 2.0W (one circuit)
Output: Open circuit voltage ≥ 22Vdc
UE/IE approximately 12V/75mA
Alarm function: (K1 and 2 are set to the "ON" side, controlling channels 1 and 2 respectively.),
3. 4 is the alarm terminal)
Load resistance<50 Ω, short circuit alarm (SC)
Load resistance>10K, open circuit alarm (LB)
Alarm relay output characteristics:
Response time: 20ms
Drive capability: 250Vac/2A, 30Vdc/2A
Load type: resistive load

performance metrics
Insulation strength: 2500Vac/min between the intrinsic safety end and non intrinsic safety end
Non intrinsic safety end to end 1000Vac/1 minute
Working temperature: -20 ℃~+60 ℃
Relative humidity: 35% to 85% RH
Storage temperature: -40 ℃ to+80 ℃
Structure and external dimensions
Product structure: 35mm rail mounted card type
ABS shell material
Plug in terminal
Dimensions: 22.5 × 114.5 × 99 (mm)
Whole machine weight: 150g

Product Features
Wide range power supply, compliant with EMC standards
installation site
The surrounding air should not contain any medium that corrodes chromium, nickel, and silver coatings

Applicable on-site and equipment
Zone 0, Zone 1, Zone 2, Hazardous Zones IIA, IIB, IIC, in compliance with intrinsic safety equipment such as solenoid valves and sound and light alarms
Safety and Explosion proof Certification Parameters
National Quality Supervision and Inspection Center for Explosion proof Electrical Products (CQST)
Explosion proof grade: [EXia] (IIC)
Authentication parameters: Terminal (between 9.10 and 11.12)
Um = 250V Uo = 25.2V Io = 220mA
Po = 1.4W Lo = 2.0mH Co = 0.82uF

wiring diagram



Outline dimension drawing (mm)