Digital Input
- HART data converter
- 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
PHG-12TF-288/PHG-22TF-2828
Overview
The switching input transistor output signal isolator converts the input signal from the switch contact or proximity switch into a transistor output through isolation. The line fault detection function is displayed by the LED light on the top of the module. The switch of the module is used to select the phase of the channel and whether the line fault detection function is required.
This product needs to be powered independently, and the power supply, input and output terminals are isolated.
| Input | |
| Input signal | Switch contacts/proximity switches |
| The supply voltage of the sensor | About 8V |
| Input frequency range | ≤5kHz |
| 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 | |
| Switched control between inverted phase and normal phase of outputs e-c | When dial switch K1, K3 is at "ON" side, the transistor output e-c are in inverted phase |
| When dial switch K1、K3 is at "OFF" side, the transistor output e-c are in normal phase | |
| When dial switch K2、K4 is at "ON" side, the circuit selects indicating red light LFD alarm function. | |
| Output | |
| Output signal | Transistor |
| Output characteristic | NPN type transistor emitter or collector open circuit output |
| Drive capability | Output current ≤ 20mA (1.2k Ω), maximum internal current 100mA, equipped with short-circuit current protection |
| Basic parameters | |
| Supply voltage | 20~35VDC |
| Power consumption | <1.2W (24V power supply, when the transistor is on) (PHG-12TF-288) |
| <1.3W (24V power supply, when the transistor is on) (PHG-22TF-2828) | |
| LED indicator | Green: Power indicator |
| Yellow: Output transistor 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 | ≥2000VAC/min (between input/output/power supply) |
| Insulation resistance | 100MΩ (500VDC )(between input/output/power supply) |
| Electromagnetic compatibility | GB/T 18268(IEC 61326-1) |
| MTBF | 80000h |
| 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 |
Line Fault Detection
Users can select the "ON" side of the switch at the top of the module to enable fault detection function and indicate an alarm through the red LED light. On site input current>7mA, short circuit alarm (SC); On site input current<0.1mA, open circuit alarm (LB). If the switch contact input requires fault detection function (wire breakage, short circuit), a 22k Ω resistor should be connected in parallel at both ends of the switch, and a 680 Ω resistor should be connected in series (as shown in the wiring diagram for switch contact II).
