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The KTA-296 Wireless I/O extender pair offers a convenient way for analog or digital signals
to span large distances via a wireless link. The KTA-296 is designed to operate as a pair,
where the I/O from one unit "mirrors" the I/O from the other. That is, the digital inputs on
one unit trigger the relay outputs on the other unit, and the analog inputs on one unit sets
the analog outputs on the other.
I/O Mapping
Device 1
Digital Input 1
Digital Input 2
Analog Input 1
Analog Input 2
Note: Digital Inputs 3 and 4, and Analog Inputs 3 and 4, are unused on the KTA-296.
The Digital Inputs are bi-directional, and optically isolated. They will suit NPN, PNP, and dry
contact style sensors up to 30V DC.
The digital outputs are mechanical relays rated up to 240V AC/30V DC and 5A. Optically
Isolated outputs are a non-standard option
The Analog Inputs by default suit 4 to 20 mA style instruments. 0 to 20 mA, 0 to 5V and 0 to
10V are non-standard options.
The Analog Outputs by default are 4 to 20 mA. 0 to 20mA, 0 to 5V, and 0 to 10V are non-
standard options.
11 Feb 2022
KTA-296 Wireless I/O Extender
• Extend analog or digital signals
wirelessly up to 40km line-of-sight
• 2 x analog inputs (4-20mA, 0-5V, 0-10V)
• 2 x analog outputs (4-20mA, 0-5V, 0-10V)
• 2 x isolated digital inputs (2.5 to 30V)
• 2 x relay outputs (240V; 5A)
• DIN rail mountable
• "Link OK" Digital Output
• 24V DC Powered
Device 2
Relay 1
Relay 2
Analog Output 1
Analog Output 2
www.oceancontrols.com.au
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Table of Contents
Summary of Contents for OCEAN CONTROLS KTA-296
- Page 1 The KTA-296 Wireless I/O extender pair offers a convenient way for analog or digital signals to span large distances via a wireless link. The KTA-296 is designed to operate as a pair, where the I/O from one unit “mirrors” the I/O from the other. That is, the digital inputs on one unit trigger the relay outputs on the other unit, and the analog inputs on one unit sets the analog outputs on the other.
- Page 2 Device Overview The KTA-296 operates as a pair. Packets are sent over the radio link to update each device as inputs change. A change on the state of a digital input will trigger a packet to be sent. A change in an analog input of more than 4% will trigger a packet to be sent.
- Page 3 RELAY 2 NO Normally Open contact of relay 1 RELAY 2 COM Common contact of relay 1 Only used for firmware updates on the KTA-296 Radio RFD900 long range radio transceiver (900MHz) “Link OK” open collector output * The digital inputs are labelled as positive and negative, but in practice polarity is not important because they are bi-directional.
- Page 4 KTA-296 Wireless I/O Extender to ensure the radio is properly plugged into the socket. • Flashing quickly (ten times a second). Unknown error; the radio has been found, but an error occurred when initialising. COMMS Shows the status of the communications between the two radios: •...
- Page 5 KTA-296 Wireless I/O Extender Config mode is used to send a new set up to the radio module, using the RFD900 config software (discussed in more detail below). Switch 4 Radio Mode Normal Config Switch 5 Digital IOs behaviours if lose connection...
- Page 6 KTA-296 Wireless I/O Extender RFD900 Configuration Utility The factory default radio parameters for the KTA-296 should be adequate for most applications. Having said that, it is possible to reconfigure these settings using the provided utility. 11 Feb 2022 www.oceancontrols.com.au 6 of 7...
- Page 7 KTA-296 Wireless I/O Extender Steps: 1. Plug the KTA-296 into a PC via USB. Remove the lid and turn on switch 4. Apply power. 2. Download and launch the RFD900 config utility from the Ocean Controls website. 3. Select the COM port that the USB is connected on using the dropdown box under “connection”.
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