Overview
The switching input relay output signal isolator converts the input signal of the switch contact or proximity switch into a relay output through isolation. Line fault detection is through a separate relay output and displayed by an 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.
Specifications
| Input | |
| 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 | |
| Output signal | Relay and alarm relay (optional) |
| Drive capability | 250VAC/2A, 30VDC/2A resistive load |
| Response time | 20ms |
| Basic parameters | |
| Supply voltage | 20~35VDC |
| Power consumption | <1W(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 | ≥2000VAC/min (between input/output/power supply) |
| Insulation resistance | 100MΩ (500 V DC) (between input/output/power supply) |
| Electromagnetic compatibility | GB/T 18268(IEC 61326-3-1) |
| 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 |
Dimension
Connection wiring
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).