Digital Output
- 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
PHC-11TF-33 PHC-22TF-3333
Overview
The 12V/35mA switch output isolating safety barrier transmits power from the safe area to the hazardous area through contact switch control, driving intrinsically safe field devices such as solenoid valves and audible/visual alarms. The input side in the safe area is connected to the power supply via contacts.
| Specifications | |
| Input in safe area | |
| Input signal | Contact-controlled DC voltage |
| Controlled power supply | 20~35VDC |
| Power consumption | About 1.6W/channel |
| Output in hazardous area | |
| Output signal | Switch output driving 12V (35mA) |
| Open-circuit output voltage | 22V~24V |
| Alarm Relay Function: | Set the dip switch K1 (K2) to the "ON" side, and select the alarm function for the channel 1 (channel 2) circuit Short-circuit alarm (SC) when load resistance <50Ω Open-circuit alarm (LB) when load resistance >10kΩ |
| Alarm Relay Characteristics: | |
| Response time | ≤20ms |
| Driving capacity | 250V AC/2A, 30V DC/2A |
| Load type | Resistive load |
| Basic Parameters: | |
| LED indicators | CH: (channel indicator), ALARM: (alarm indicator) |
| 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 (≥3000V AC/min) |
| Insulation resistance | ≥100MΩ (between input/output/power supply) |
| EMC | According to IEC 61326-1 (GB/T 18268), IEC 61326-3-1 |
| Wiring requirements | Cross-section ≥0.5mm²; insulation strength ≥500V |
| Applicable field equipments | Audible/visual alarms, intrinsically safe solenoid valves |
| 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 |
| Safety Certification | |
| Explosion-proof marking | [Ex ia Ga] IIC [Ex ia Da] IIIC |
| Explosion-proof standards | GB/T 3836.1-2021, GB/T 3836.4-2021 |
| Terminals 2-3, 5-6 | 250V AC/DC，Uo=25.2V DC，Io=85mA， Po=0.535W， Co=0.107μF， Lo=5mH. |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
Note: PHC-11TF-33 does not include input 2 and output 2 parts
PHD-11TC-33A-23
