Changes for page LT-22222-L -- LoRa I/O Controller User Manual
Last modified by Saxer Lin on 2025/04/15 17:24
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... ... @@ -1420,7 +1420,7 @@ 1420 1420 [[image:thingseye-io-step-6.png||height="625" width="1000"]] 1421 1421 1422 1422 1423 -== 3.6 Interface Detail == 1423 +== 3.6 Interface Details == 1424 1424 1425 1425 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) === 1426 1426 ... ... @@ -1434,12 +1434,12 @@ 1434 1434 1435 1435 1436 1436 ((( 1437 -The DI port of LT-22222-L can support **NPN** or**PNP** or **DryContact** output sensor.1437 +The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors. 1438 1438 ))) 1439 1439 1440 1440 ((( 1441 1441 ((( 1442 - Internal circuitas below,the NEC2501is aphotocoupler,theActive current(from NEC2501 pin 1 to pin 2 is 1maandthemax currentis50mA).(% class="mark" %)Whenthere isactive currentpassNEC2501 pin1 to pin2.The DIwillbe activehighand DI LED statuswillchange.1442 +The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH, and the DI LED status changes. 1443 1443 1444 1444 1445 1445 ))) ... ... @@ -1449,7 +1449,7 @@ 1449 1449 1450 1450 ((( 1451 1451 ((( 1452 - When use needto connect a device to the DI port, both DI1+ and DI1- must be connected.1452 +(% style="font-size: 11pt; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-position: normal; white-space: pre-wrap; font-family: Arial, sans-serif; color: rgb(0, 0, 0); font-weight: 400; font-style: normal; text-decoration: none" %)When connecting a device to the DI port, both DI1+ and DI1- must be connected. 1453 1453 ))) 1454 1454 ))) 1455 1455 ... ... @@ -1458,22 +1458,22 @@ 1458 1458 ))) 1459 1459 1460 1460 ((( 1461 -(% style="color:blue" %)**Example1**(%%): Connect to a Low1461 +(% style="color:blue" %)**Example1**(%%): Connecting to a low-active sensor. 1462 1462 ))) 1463 1463 1464 1464 ((( 1465 -This type of sensor willoutput a low signalGNDwhen active.1465 +This type of sensors outputs a low (GND) signal when active. 1466 1466 ))) 1467 1467 1468 1468 * ((( 1469 -Connect sensor's output to DI1- 1469 +Connect the sensor's output to DI1- 1470 1470 ))) 1471 1471 * ((( 1472 -Connect sensor's VCC to DI1+. 1472 +Connect the sensor's VCC to DI1+. 1473 1473 ))) 1474 1474 1475 1475 ((( 1476 - So when sensor active, the current between NEC2501 pin1 and pin2 is:1476 +When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be: 1477 1477 ))) 1478 1478 1479 1479 ((( ... ... @@ -1481,7 +1481,7 @@ 1481 1481 ))) 1482 1482 1483 1483 ((( 1484 - If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA ,Sothe LT-22222-L will be able to detect this active signal.1484 +For example, if** DI1+ **= **12V**, the resulting current is [[image:1653968155772-850.png||height="23" width="19"]]= 12mA. Therefore, the LT-22222-L will be able to detect this active signal. 1485 1485 ))) 1486 1486 1487 1487 ((( ... ... @@ -1489,22 +1489,22 @@ 1489 1489 ))) 1490 1490 1491 1491 ((( 1492 -(% style="color:blue" %)**Example2**(%%): Connect to a High1492 +(% style="color:blue" %)**Example2**(%%): Connecting to a high-active sensor. 1493 1493 ))) 1494 1494 1495 1495 ((( 1496 -This type of sensor willoutput a high signal (example24v) when active.1496 +This type of sensors outputs a high signal (e.g., 24V) when active. 1497 1497 ))) 1498 1498 1499 1499 * ((( 1500 -Connect sensor's output to DI1+ 1500 +Connect the sensor's output to DI1+ 1501 1501 ))) 1502 1502 * ((( 1503 -Connect sensor's GND DI1-. 1503 +Connect the sensor's GND DI1-. 1504 1504 ))) 1505 1505 1506 1506 ((( 1507 - So when sensor active, the current between NEC2501 pin1 and pin2 is:1507 +When the sensor is active, the current between NEC2501 pin1 and pin2 will be: 1508 1508 ))) 1509 1509 1510 1510 ((( ... ... @@ -1512,7 +1512,7 @@ 1512 1512 ))) 1513 1513 1514 1514 ((( 1515 -If **DI1+ = 24 v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA ,So the LT-22222-L willbe able todetect this high1515 +If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] 24mA , Therefore, the LT-22222-L will detect this high-active signal. 1516 1516 ))) 1517 1517 1518 1518 ((( ... ... @@ -1520,22 +1520,22 @@ 1520 1520 ))) 1521 1521 1522 1522 ((( 1523 -(% style="color:blue" %)**Example3**(%%): Connect to a 220 vhigh1523 +(% style="color:blue" %)**Example3**(%%): Connecting to a 220V high-active sensor. 1524 1524 ))) 1525 1525 1526 1526 ((( 1527 -Assume u serwant to monitor an active signal higher than 220v,to make surenotburnthe photocoupler1527 +Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler 1528 1528 ))) 1529 1529 1530 1530 * ((( 1531 -Connect sensor's output to DI1+ with a serial50K resistor1531 +Connect the sensor's output to DI1+ with a 50K resistor in series. 1532 1532 ))) 1533 1533 * ((( 1534 -Connect sensor's GND DI1-. 1534 +Connect the sensor's GND DI1-. 1535 1535 ))) 1536 1536 1537 1537 ((( 1538 - So when sensor active, the current between NEC2501 pin1 and pin2 is:1538 +When the sensor is active, the current between NEC2501 pin1 and pin2 will be: 1539 1539 ))) 1540 1540 1541 1541 ((( ... ... @@ -1543,19 +1543,19 @@ 1543 1543 ))) 1544 1544 1545 1545 ((( 1546 -If sensor output is 220 v, theSothe LT-22222-L will be able to detect this highsafely.1546 +If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K. = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal. 1547 1547 ))) 1548 1548 1549 1549 1550 -(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor 1550 +(% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor 1551 1551 1552 -From aboveDI portscircuit,we can see that activethe photocouplerwill needto haveavoltage difference between DI+ and DI- port.While the Dry Contact sensor is a passive componentwhichcan't provide this voltage difference.1552 +From DI port circuit above, you can see that activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference. 1553 1553 1554 -To detect a Dry Contact, wecan providea power source to one pin of the Dry Contact. Below is a reference connection.1554 +To detect a Dry Contact, you can supply a power source to one pin of the Dry Contact. Below is a reference circuit diagram. 1555 1555 1556 1556 [[image:image-20230616235145-1.png]] 1557 1557 1558 -(% style="color:blue" %)**Example5**(%%): Connect to Open Colle actor1558 +(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector 1559 1559 1560 1560 [[image:image-20240219115718-1.png]] 1561 1561