Surge Protection Type Isolated Safety Barrier
- 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
PHD-11TF-27+
Overview
Isolated safety barrier at detection end: PHD-11TC-33*, communication signal input, single input and single output. The safety barrier can realize the bilateral communication of half duplex digital signals between RS485 interface in dangerous area and RS485 interface in safe area.
This product needs an external 20-35VDC power supply.
The product is equipped with signal status indicator (yellow)
| Input in harzadous area | |
| Input signal | Switch contacts/proximity switches |
| The supply voltage of the sensor | About 8V |
| Switching rate | <10Hz |
| Input/output characteristics: | |
| On site input current | >2.1mA, the output is closed, indicating ON; |
| When<1.2mA, the output is open circuit, indicating OFF | |
| Output normally "Open"/"Closed" | When dial switch K1 is at "ON" side, the relay output is "Normally closed". |
| Contact conversion control | When dial switch K1 is at "OFF" side, the relay output is "Normally closed". |
| When dial switch K2 is at "ON" side, the circuit selects indicating red light LFD alarm function. | |
| Output in safe area | |
| Output signal | Relay and alarm relay (optional) |
| Contact capacity | 250VAC/2A,30VDC/2A when subjected to resistive loads |
| Response time | 20ms |
| Surge protection features: | |
| Nominal discharge current ln(8/20μs) | 5kA |
| Voltage protection level Up(8/20μs): | 60V(line to line) |
| Voltage protection level Up(8/20μs): | 600V(line to ground) |
| According to standards | GB/T18802.21-2016(equivalent to 1EC61643-21:2012) |
| Basic parameters | |
| Supply voltage | 20~35VDC |
| Power consumption | <30mA(24V power supply, when the relay contacts close) |
| LED indicator | Green: Power indicator |
| Yellow: Output relay in normal working state | |
| Red: LFD indication, line fault alarm | |
| Temperature parameters | Working temperature: -20℃ ~ +60℃, |
| Storage temperature: -40℃ ~ +80℃ | |
| Relative humidity | 10%~95% RH no condensation |
| Insulation strength | Between intrinsically safe side and non-intrinsically safe side (≥3000VAC/min); between power supply and non-intrinsically safe side (≥1500VAC/min) |
| Insulation resistance | ≥100MΩ (between input/output/power supply) |
| Electromagnetic compatibility | According to IEC 61326-1 (GB/T 18268), IEC 61326-3-1 |
| MTBF | 100000h |
| Wire requirements | Horizontal cutting surface ≥ 0.5mm2; Insulation strength ≥ 500V |
| Applicable field equipments | Field equipment such as dry contacts or NAMUR type proximity switch inputs that comply with DIN19234 standard |
| Installation place | 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 |
| Intrinsically safe certification | |
| Explosion proof mark | [Ex ia Ga]lIC [Ex ia Da]lllC |
| Explosion-proof standard | GB/T3836.1-2021 GB/T3836.4-2021 |
| Terminals 3-4 | Um:250V AC/DC Uo=10.5V DC lo=15mA |
| Po=39.4mW Co=1.7μF Lo=165mH | |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
| Shanghai lightning protection products testing center | |
PHD-11TC-33A-23
