Optoisolator Board
Function of optoisolator: An opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light.
Features
- DIN rail mountable
- Four/Five/Six/Eight optoisolators on single board
- LED indication for input signal
- Positive supply common/negative supply common selection by jumpers
- 2/3/4 Outputs can be grouped to same supply by jumpers
Technical Specifications
- Input signal voltage:20 VDC-28VDC, Typical voltage is 24VDC
- Max. input current:25 mA @24VDC
- Max. output voltage:65 VDC
- Min.output voltage:2.0 VDC
- Max. load per output point:50 mA
- Continuous power dissipation at (or below) 25°C free-air temperature: 200mW
- Input to output electrical isolation: 3.55 KV
- Max. Voltage drop in output voltage: 0.5 V @ 5mA load
- Resistance, input to output: 100 GΩ
- Switch ON delay: 5µS
- Switch OFF delay: 5µS
Applications
- For connecting inverters/Servo drives to PLC output modules.
- To convert NPN sensor to PNP sensor and vice versa.
- For isolating field inputs from PLC input module.
- To connect incremental encoder (With Incompatible signal level) to control system.
- In all applications where we need very fast and require isolation between driver and driven circuits.
- For connecting one signal level (5-230 VDC)to another signal level (2-65 VDC)with isolation.
- To make field inputs noise free.

Characteristic of optoisolator Circuit

Optoisolator Vs Relay Comparison
Sr.No |
Optoisolator |
Relay Board |
1 |
Switching time 5µS |
Switch ON time 10mS & Switch OFF time 5ms |
2 |
No limitation on number of operations at 50mA load |
300,000 operations is limit at 2A/24 VDC load |
3 |
Space 65x87(mm) for 5 points |
Space 100x87(mm) for 4 points |
4 |
Max. load 50mA per point |
Max. load 2A per point |
Highlights
Available in 4points/5 points/6 points/8 points variants.
Opto. boards with input signal other than 24VDC can be supplied on demand.
High speed switching 2µS possible on demand.
Standard/Approvals
CE Certified
PCB:IEC61373
Optoisolator:UL
Terminals:UL/CE
Profile & end plates:CE
NOTE:- Due to continuous product development the product supplied to you may look different than the product image in the pdf file.