16CH Binary Input

16CH Binary Input
Developer	Matthias F.
Status	Version 1.0 finished
Microcontroller/Board
KNX connectivity	Mini-BCU

Description

16ch Binary Input (potential-free)

The binary input has 16 inputs available and is used to connect eight conventional push-buttons or floating contacts such as window or relay contacts. There is one status LED for each input. In addition, the input status is sent to the bus. A separate power supply is not necessary

Technical Data:

• Operating voltage:         KNX Bus voltage <10mA
• Installation type:             Top Hat Rail mounting
• Number of Inputs:           16
• Number of S0-Inputs:      4 (CH13 - CH16)
• Input polling:                    with 100ms, 300ms or 500ms
• Typ of Inputs:                   potential-free / floating contacts
• Max. cable length:           30m tested (more possible)
• input voltage:                  5V
• Max. input voltage:          24V (absolute rating, for <1min)
• Max. input current:          10mA

• The device makes a contact supply voltage (5V) which is not electrically isolated from the bus voltage!

• x-Inputs can configure to a "room" ("room"-GA can show if one of the windows is open in the room)

Schematic

Hardware

What you need

for this device do you need:

• 1x OKW Housing
• 1x PCB Kit
• 1x Mounting Kit (screws, ...)

OKW Housing link OKW-Website:[1]
1x B6503121 RAILTEC B, 4 Module
3x B6607140 Klemmenabdeckung, flach 
1x B6607145 Abdeckung KNX, flach
4x B6607142 Klemmenabdeckung, flach 
(1x) B6603180 Frontplatte, 4 Module (only if you don't use the "LED-Status-PCB" 

PCB Kit:
1) Application PCB
2) Controller PCB
3) LED-Status PCB (for function not necessary, only to show the status of the Inputs)
4) Mini-BCU (KNX-Transceiver)

Mounting Kit
4x 

without housing

Software

What you need

• Arduino IDE (link)
• Arduino Code for 16CH Binary Input
• XML-File for 16CH Binary Input
• KONNEKTING SUITE (link)

User Documentation

HW Documentation

Circuit diagram

One VCC Output-Pin shares two Input-Channels. Because of that always two Channels will monitoring together.

=====S0 interface===== Up to four Inputs can configure to an S0-interface. possible CH are Ch13 - Ch16 note: If you configure only one Ch to an S0-Interface on an VCC-Output pair, then the output of the other CH can not be switched off, because the VCC-Output voltage supply always both Channels.

16Ch Input

12Ch Input + 4Ch S0-Interface

Developer Documentation

State Machine

START -> Loop over all Channels (activation Outputs x + y -> readout inputs x + y -> update Status LED -> deactivation Outputs x + y)