Overview
H serie backplane mounting isolated safety barriers at detection side: PHD-12HF-277, digital input and output, single input and dual output.
The isolated barrier can convert the proximity switch and contact input in the dangerous area to the relay contact signal and transmit it to the safe area.
The output relay is equipped with selection switch of "ON/OFF" situation. In addition, there is an input signal short-circuit or open-circuit alarm indication, the circuit provides power for the input sensor.
This product needs independent power supply.
The signal status indicator is set in red and yellow light to indicate the working status of the output relay, when it is for alarming then the light is red, during normal operation the light is yellow.
Specifications
| Supply voltage | 20~35VDC, power consumption<1.5W |
| Input signal | Switch or NAMUR proximity detector |
| Supply voltage of sensor on site | 8V |
| Signal input characteristics | On-site input current: >2.1mA, it means ON; On-site input current: <1.2mA, it means OFF |
| Output and alarm relay characteristics | Response time: 20ms, driving capacity: 250VAC/2A, 30VDC/2A under resistive load |
| Output and alarm relay characteristics | When the dial switch K1, K3 is at "ON" side, the relay output is "OFF" When the dial switch K1, K3 is at "OFF" side, the relay output is "ON" When the dial switch K2, K4 is at "ON" side, the circuit selects indicating red light relay alarm function |
| Indicator light alarm function | On-site input current>7mA, short-circuit alarm (SC) , on-site input current<0.1mA, open-circuit alarm ( LB) For switch contact input, when the disconnection detection function is required, a 22KΩ resistor must be connected parallel at both ends of the switch (Please see the switch contact II in the below wiring diagram) |
| Number of input and output | 1 input 2 outputs |
| Applicable field equipments | Dry contact or NAMUR proximity switch in accordance with DIN 19234 standard |
| Temperature parameter | Working temperature: -20℃~+60℃, storage temperature: -40℃~+80℃ |
| Relative humidity | 10%~95% RH no condensation |
| Dielectric strength | Between intrinsically safe side and non-intrinsically safe side (≥3000VAC/min); between power supply and non-intrinsically safe terminal (≥1500VAC/min) |
| Insulation resistance | ≥100MΩ (between input/output/power supply) |
| External dimensions | Thickness 15.8mm * width 104.8mm * high 116.1mm |
| Electromagnetic compatibility | According to IEC 61326-1 (GB/T 18268), IEC 61326-3-1 |
| Explosion-proof mark | [Exia Ga]IIC, [Exia Da]IIIC |
| Functional safety certification | SIL3 according to IEC 61508 EN 61511 standards |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
| Certified parameters (between terminals 1-2,4-5) | Um=250V Uo=10.5V Io=15mA Po=39.4mW Co=1.7μF Lo=165mH |
| Installation site requirements | It can be connected with instruments in 0 zone with ⅡA, ⅡB, ⅡC dangerous gas |
| MTBF | ≤100000h |
Wiring diagram
