| Customization: | Available |
|---|---|
| Task: | Adjust |
| Structure: | Combination |
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Overview
The base plate mounted isolated safety barrier PHD-11HF-2828 transmits the input signals from switch contacts or proximity switches in the hazardous area to the safe area transistor outputs via the safety barrier isolation. Line fault detection is via a separate relay output (optional) and is indicated by an LED on the top of the module. Switches on the module are used to select the phase of the channel and whether the line fault detection function is required.
The product requires a separate power supply with triple isolation for power, input and output.
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).
Main technical parameters
| Number of channels: | two inputs and two outputs |
| Power supply: | |
| Power supply voltage: | 20~35V DC, power consumption of about 1W (24V DC, output 20mA) |
| Power protection: | power reverse protection |
| Hazardous side input: | |
| Input signal: | switch contact/proximity switch |
| Sensor supply voltage: | approx. 8V |
| Input/Output Characteristics: | |
| Field input current: | When >2.1mA, the output is closed, indicating ON; When <1.2mA, the output is open, indicating OFF. |
| Output e-c on/off state switching control: | DIP switches K1, K3 set to "ON" side, the transistor output e-c is on. DIP switch K1, K3 set to "OFF" side, transistor output e-c cutoff. DIP switch K2, K4 set to "ON" side, the circuit selects the indicator light red LFD alarm function. |
| Safety side output: | |
| Output signal: | transistor, alarm relay (optional) |
| Driving capacity: | output current ≤ 20mA (1.2kΩ), the maximum internal current of 100mA, a short-circuit current protection |
| Output characteristics: | NPN transistor emitter or open collector output |
| LED indicator: | green power indication; yellow output transistor normal working status; red LFD indication, line failure alarm |
| Temperature parameters: | operating temperature -20ºC~+60ºC; storage temperature -40ºC~+80ºC |
| Air relative humidity: | 10%~95%RH without condensation |
| Insulation strength: | intrinsically safe end and non-intrinsically safe end (≥3000V AC/min); between power supply and non-intrinsically safe (≥1500V AC/min) |
| Insulation resistance: | ≥100MΩ (input/output/power supply between) |
| Electromagnetic compatibility: | in line with IEC 61326-1 (GB/T 18268), IEC 61326-3-1 |
| Mean time to failure: | 100000 hours |
| Wire requirements: | cross-section ≥ 0.5mm2; insulation strength ≥ 500V |
| Applicable field devices: | dry contact or NAMUR type proximity switch inputs according to DIN19234, etc. |
| Installation site: | installed in the safe zone, can be connected with the highest in Zone 0, IIC, Zone 20, IIIC hazardous locations of the intrinsically safe instrumentation |
| Safety certification | |
| Certification body: | National Explosion-proof Electrical Product Quality Supervision and Testing Center CQST |
| Certification standard: | GB/T 3836.1-2021, GB/T 3836.4-2021 |
| Explosion-proof symbol: | [Exia Ga]IIC, [Exia Da]IIIC |
| Certified parameters (between terminals 1-2): | Um: 250V AC/DC, Uo=10.5V DC, Io=15mA, Po=39.4W, Co=1.7μF, Lo=165mH. |
Q:Do you accept OEM or ODM orders?
A: Yes.we do.Please let us know your requirements
Q: What is your MoQ?
A:No MOQ limits.1 piece for trial order at first is acceptable
Q:What is your warranty for your product?
A:2 years (2 years maintenance guaranteed for non-man-made damages)
Q: How do you assure the quality?
A: Attaching great importance to quality control,we check every step to make sure items in good quality.
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