Difference between revisions of "UTEK UT-2127 RS-232 to RS-485 Converter"

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Isolated (supposedly optically) RS-232 to RS-485 converter, useful for controlling VFD's over half-duplex Modbus, though the converter supports full duplex.
 
Isolated (supposedly optically) RS-232 to RS-485 converter, useful for controlling VFD's over half-duplex Modbus, though the converter supports full duplex.
 +
 +
== Bill of Materials ==
 +
 +
{| class="wikitable"
 +
! Name
 +
! Package
 +
! Marking
 +
! Description
 +
! Link
 +
|-
 +
| U1,U4
 +
| SOIC-8
 +
| SP3485E; 1749L; T17210
 +
| half-duplex RS-485 transceiver
 +
| [https://www.digikey.com/en/products/detail/maxlinear-inc/SP3485EN-L/2411077 MaxLinear SP3485EN-L]
 +
|-
 +
| U3
 +
| SOT-23-5
 +
| L00A
 +
| 3.3V ultra low dropout voltage regulator
 +
| [https://www.digikey.com/en/products/detail/texas-instruments/LP2980AIM5-3-3/3698136 Texas Instruments LP2980AIM5-3.3]
 +
|-
 +
| U5,U6
 +
| SOIC-14
 +
| NXP HEF4093BT; CSA59001; TXD17383
 +
| quad 2-input NAND Schmitt trigger
 +
| [https://www.digikey.com/en/products/detail/nxp-usa-inc/HEF4093BT-652/13437749 NXP HEF4093BT,652]
 +
|-
 +
| U7
 +
| SOIC-8
 +
| [Top Power ASIC logo] TP7660; 1749H
 +
| voltage converter
 +
| [http://www.tpwic.com/uploadfile/2013/0620/20130620123230142.pdf Chinese datasheet]
 +
|-
 +
| R1,R3,R7
 +
| 0603
 +
| 472
 +
|
 +
|
 +
|-
 +
| R4,R8,R9
 +
| 0603
 +
| 472
 +
|
 +
|
 +
|-
 +
| R5,R6
 +
| 0603
 +
| 122
 +
|
 +
|
 +
|-
 +
| C3
 +
|
 +
| 226C; 83EH0
 +
|
 +
|
 +
|-
 +
| C2,C5,C6
 +
|
 +
| 106C; 20EH4
 +
|
 +
|
 +
|-
 +
| C1,C4,C7,C10,C11,C12
 +
| 0603
 +
|
 +
|
 +
|
 +
|-
 +
| C8, C9
 +
| "B" size
 +
| 106C; 10FN0
 +
|
 +
|-
 +
| Q2,Q3,Q4,Q6
 +
| SOT-23
 +
| C3
 +
|
 +
|
 +
|-
 +
| Q1,Q5
 +
| SOT-23
 +
| M6
 +
|
 +
|
 +
|-
 +
| D1,D2
 +
| ?
 +
| M4
 +
|
 +
|
 +
|-
 +
| ZD1,ZD22,ZD4,ZD5
 +
|
 +
| [B logo] C803; AK
 +
|
 +
|
 +
|-
 +
| ZD3
 +
|
 +
| SS24
 +
|
 +
|
 +
|-
 +
| JP1
 +
|
 +
| ZHONGB; ZB126; 300V 10A; CE 20-14 AWG
 +
| (Ningbo Zhongbo Photovoltaic Technology Co., LTD) 6-position 5.0mm pitch screw terminal block
 +
| [http://www.nbzhongbo.com/bookpic/20141110131211265.pdf datasheet] [https://www.megasan.com/Product/DownloadFile?downloadId=375674 datasheet (alt)]
 +
|-
 +
| JP2
 +
|
 +
|
 +
| female DE-9 solder cup connector (PCB mounted though!)
 +
|
 +
|-
 +
| JP3
 +
|
 +
|
 +
| small (~4mm OD) DC barrel jack
 +
|
 +
|-
 +
| T1
 +
|
 +
| UTEK 05S05S-W1
 +
|
 +
|
 +
|}
  
 
== Online Resources ==
 
== Online Resources ==

Revision as of 07:04, 25 August 2021

UTEK UT-2127

Overview

Isolated (supposedly optically) RS-232 to RS-485 converter, useful for controlling VFD's over half-duplex Modbus, though the converter supports full duplex.

Bill of Materials

Name Package Marking Description Link
U1,U4 SOIC-8 SP3485E; 1749L; T17210 half-duplex RS-485 transceiver MaxLinear SP3485EN-L
U3 SOT-23-5 L00A 3.3V ultra low dropout voltage regulator Texas Instruments LP2980AIM5-3.3
U5,U6 SOIC-14 NXP HEF4093BT; CSA59001; TXD17383 quad 2-input NAND Schmitt trigger NXP HEF4093BT,652
U7 SOIC-8 [Top Power ASIC logo] TP7660; 1749H voltage converter Chinese datasheet
R1,R3,R7 0603 472
R4,R8,R9 0603 472
R5,R6 0603 122
C3 226C; 83EH0
C2,C5,C6 106C; 20EH4
C1,C4,C7,C10,C11,C12 0603
C8, C9 "B" size 106C; 10FN0
Q2,Q3,Q4,Q6 SOT-23 C3
Q1,Q5 SOT-23 M6
D1,D2 ? M4
ZD1,ZD22,ZD4,ZD5 [B logo] C803; AK
ZD3 SS24
JP1 ZHONGB; ZB126; 300V 10A; CE 20-14 AWG (Ningbo Zhongbo Photovoltaic Technology Co., LTD) 6-position 5.0mm pitch screw terminal block datasheet datasheet (alt)
JP2 female DE-9 solder cup connector (PCB mounted though!)
JP3 small (~4mm OD) DC barrel jack
T1 UTEK 05S05S-W1

Online Resources

RS-232 to RS-485/422 Port-Powered Lightning Converter with Optical Isolation

User Manual

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