Pors-SAK11 Digital Isolated Safety Barrier

Brand Name	Porstech		Place of Origin	China
Model Number	Pors-SAK11

1. Summary
    Pors-SAK11 receives signal of switch contact or proximity sensor from Hazardos area, through isolated transmitting, exports signal of relay contact, electric level or transistor to control system or other instruments in safe area; 
    Adopt independent power supply; power, input and output are isolated each other;

2. Technical index 
    ◆ Input (Hazardous area) 
         Passive input: pure switch or NAMUR proximity sensor (compliance with DIN19234) 
        Active signal: input > 2.1mA: ON
                                 input <1.2mA: OFF
        Open circuit voltage: 8V0.5V
        Short circuit current: around 4mA
        Switch Threshold: around 1.55mA
        Hysteresis: 0.2~0.4mA
    ◆ Output (Safe area) 
        A: Relay contact: Single-pole switching relay
            Contact point: 24VDC, 2A;
            Load: resistive load;
            Response time: ≤10ms
        B: Electric level
            High level: 4.5V~5.5V, drive capacity: ≤20mA
            Low level: ≤0.5V
        C: Transistor 
            External power supply ≤40V, 
            Drive output current ≤40mA
            Collector output: high level: VCC; low level: ≤2.5mA
            Emitter output: high level: VCC-2.5V; low level: ≤0.5V
    ◆ Intrinsical safe parameters
         Explosion-proof: [Exia] II C
         Max. allowed voltage Um: 250V
         Max.  open circuit voltage Uo: 11V
         Max. short circuit current Io: 15mA
         Max. external inductance Lo: 10mH
         Max. external capacitance Co: 1.4uF
    ◆ Environmental parameters
         Power supply: 20-30VDC
         Consumption: <25mA (when power supply is 24VDC)
         Power indicator: Green LED
         Operating temperature: -20-+60℃
         Operating humidity: 0-95%RH (no condensation)
    ◆ Performance index (to full span)
         Temperature drift: ±0.015%/℃
         Response time: ≦10ms
         Isolated strength: input-output-power 1.5kV, 1min, 50Hz
         Insulation resistance:  input-output-power ≧100MΩ/500VDC
         Start up time: ≦3s