H Series Backplane Mounting Isolated Safety Barriers
- Isolated Safety Barriers
- Signal Isolators
- Surge Protective Devices
- Safety Relays
- Isolated Intelligent I/O Modules
- Intelligent Gateways
- Industrial Data Optical Transceivers
- Online Dew Point Analyzers
- Data Acquisition Modules
- HART data converter
- Terminal Board
PHD-22HF-2727
Overview
H serie backplane mounting isolated safety barriers at detection side: PHD-22HF-2727, digital input and output, dual input and dual outputs.
The isolated barrier can convert the proximity switch and contact input in the hazardous 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.
| Supply voltage | 20~35VDC, power consumption<1.5W |
| Input signal | Switch contact or Proximity switches (NAMUR) |
| Supply voltage of sensor on site | 8V |
| Signal input characteristics | On-site input current: >2.1mA, it indication ON; On-site input current: <1.2mA, it indication OFF |
| Output in safe area | Response time: 20ms, driving capability: 250VAC/2A, 30VDC/2A under resistive load |
Output normally “Open”/“Closed” |
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 LFD alarm function | |
| LFD | 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 | 2 inputs 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) |
| 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 |
| Certification standard | GB/T 3836.1-2021、GB/T 3836.4-2021 |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
| Certified parameters (between terminals 1-2,4-5) |
Um：250VAC/DC，Uo=10.5VDC，Io=14mA,
Po=37mW，Co=2.4μF，Lo=165mH.
|
| Installation site requirements | Installed in a safe zone, it can be connected to intrinsic safety instruments in hazardous areas up to Zone 0, IIC, Zone 20, and IIIC |
| MTBF | ≤100000h |
Line Fault Detection (LFD)
Line Fault Detection (LFD) is a user-selectable switch on the top of the module and is indicated by an LED. If a line fault is detected, the line fault relay is closed and the channel output relay is disconnected. Short circuit alarm (SC) for field input current >7mA; open circuit alarm (LB) for field input current <0.1mA; switch contact input; 22kΩ resistor must be connected in parallel at both ends of the switch for line fault detection (e.g., switch contact II in the wiring diagram).
PHD-11TC-33A-23
PHD-22HF-2727