<
From version < 160.1 >
edited by Dilisi S
on 2024/11/02 05:25
To version < 161.1 >
edited by Dilisi S
on 2024/11/04 17:36
>
Change comment: edited 3.6.2

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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 **Dry Contact** 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 circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA). (% class="mark" %)When there is active current pass NEC2501 pin1 to pin2. The DI will be active high and DI LED status will change.
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 need to 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 Low active sensor.
1461 +(% style="color:blue" %)**Example1**(%%): Connecting to a low-active sensor.
1462 1462  )))
1463 1463  
1464 1464  (((
1465 -This type of sensor will output a low signal GND when 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 , So the 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 High active sensor.
1492 +(% style="color:blue" %)**Example2**(%%): Connecting to a high-active sensor.
1493 1493  )))
1494 1494  
1495 1495  (((
1496 -This type of sensor will output a high signal (example 24v) 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+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1515 +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 220v high active sensor.
1523 +(% style="color:blue" %)**Example3**(%%): Connecting to a 220V high-active sensor.
1524 1524  )))
1525 1525  
1526 1526  (((
1527 -Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1527 +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 serial 50K resistor
1531 +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 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1546 +If the sensor output is 220V, the[[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 above DI ports circuit, we can see that active the photocoupler will need to have a voltage difference between DI+ and DI- port. While the Dry Contact sensor is a passive component which can'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, we can provide a 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 Colleactor
1558 +(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector
1559 1559  
1560 1560  [[image:image-20240219115718-1.png]]
1561 1561  
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