Digital Input
- 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-12TF-288
Product Specifications
| Supply voltage | 20~35VDC, power consumption<1.0W |
| Input signal | Switch contact/proximity switch |
| Supply voltage from sensor side on site | 8V |
| Signal input characteristics | On-site input current: >2.1mA, it means ON; On-site input current: <1.2mA, it means OFF Switch hysteresis: 0.2ms |
| Transistor output characteristics | NPN type transistor emitter or collector open circuit output, drive capacity: output current ≤20mA (1.2KΩ), internal maximum current 100mA. Equipped with short-circuit current protection |
| Switched control between inverted phase and normal phase of outputs e-c | When the dial switch K1 is at "ON", the transistor output e-c are in inverted phase When the dial switch K1 is at "OFF", the transistor output e-c are in normal phase When the K2 is at "ON", the circut will select the red light indication alarm function |
| Indicating light alarm function | Field input current >7mA, short-circuit alarm (SC), on-site input current < 0.1mA, open-circuit alarm (LB). Switch contact input, when disconnection detection function is required, a 10kΩ resistor should be connected in parallel at both ends of the switch (Please see the switch contact II in the wiring diagram below). |
| Number of input and output | 1 input 2 output |
| 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 air humidity | 10%~95%RH without 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 12.5mm x width 108mm x high 118mm |
| Electromagnetic compatibility | According to IEC 61326-1(GB/T 18268), IEC 61326-3-1 |
| Explosion-proof mark | [Exia Ga]IIC |
| 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 3-4) | Um=250V Uo=10.5V Io=15mA Co=1.7μF Lo=150mH Po=39.4mW |
| Installation site Requirements | It can be connected with instruments in 0 zone with ⅡA, ⅡB, ⅡC dangerous gas |
| MTBF | ≤100000h |
Wiring diagram
Terminal assignments and dimensions
Terminal |
Terminal assignments |
|
9 |
Power supply + |
20～35VDC |
10 |
Power supply - |
|
3 |
Input+ |
|
4 |
Input- |
|
5 |
Transistor output 1+ |
|
6 |
Transistor output 1- |
|
7 |
Transistor output 2+ |
|
8 |
Transistor output 2- |
|
