Wire break detection only works in sink mode. In application the sensors can be far from PLC modules and connected with long cables/wires. Hence, wire break is monitored continuously. Wire break feature will detect if the connection on INx is complete…
In the above circuit, the dotted box 2 in figure is a full bridge diode rectifier to connect COM1 and COM2 to AVCC and AVSS accordingly. Assuming AVCC=24V, ISO1228 can be configured as mentioned below:
If COM2 = 24V and COM1 = GND, ISO1228 gets configured…
Part Number: ISO1228 Other Parts Discussed in Thread: ISO1212 , , ISO1211 , ISOM8110 , ISOM8710 Tool/software: Hi!
I'm thinking about using the ISO1228, ISO1211 or ISO1212 in one design. In ISO1228 datasheet the maximum operating condition says that the…
Part Number: ISO1228 Tool/software: I am trying to get ahold of the SPICE models for the ISO1228, the only thing I see on the website is the IBIS model and a download for PSPICE for TI. Trying to download PSPICE for TI gives me an error message or a…
Hello Mohammad,
Sorry to keep you waiting. Here is the clarification from the team.
Mohammad Zinati said: so if i connect LEDx direct to GND in sink mode, i lost the wire-break detection. Am i right? i really interested how happen is this? i can't figure…
Sinking Type Inputs are also called as positive logic digital input as per IEC61131-2. The direction of flow of current is into the device from the switch/sensor. The VIN is independent of AVCC. Each input can handle up to 36V inputs. Hence, it is easier…
Part Number: ISO1228 Hello, I would like to understand the role of nRST. According to the datashset, this reset is only required when BRST pin is toggled. Does it has any other role? If the user doesn't change BRST_EN, is it OK to just pull up nRST pin…
Part Number: ISO1228 Hi Sir:
The SPI clock frequency is 500KHz and voltage level is 5V.
Waveforms measured as below.
The input SPI reads the IN1~8 values according to spec..
But there is no output from SDO.
The circuit is as follow.
Please help…