HindlePower ATevo Series Operating/Service Instructions Manual page 214

HindlePower Inc
12.1. 12.1. Auxiliary Input/Output (I/O) Board Auxiliary Input/Output (I/O) Board
The Auxiliary I/O Board (A4) is an optional component that mounts near the top of the heat sink
on the left side of the ATevo . It is equipped with:
• Six (6) relays
• Four (4) generic Binary Inputs
• Four (4) generic Analog Inputs
When supplied, the Auxiliary I/O Board (A4) is electrically connected to and mounts on the
Power Board (A2). The Auxiliary I/O Board (A4) links to the Main Control Board (A1), via serial
communications, through the ribbon cable connected from the Power Board (A2).
A GREEN communications LED on the Auxiliary I/O Board (A4) is located adjacent to terminal
block (A4-TB2). This LED blinks to indicate active communication between the Aux I/O Board
and the Main Board.
All relays on the Auxiliary I/O Board (A4) are 'failsafe'. If communication is lost between the
Main Control Board (A1) and the Auxiliary I/O Board (A4), the relays will switch to the alarm
state.
For component details of the Auxiliary I/O Board (A4), refer to standard drawing:
JE5253-21 (Style-5054, up to 25Adc, w/options)
Copyright HindlePower Inc. 2021
ATevo O&SI - 1PH Input Group I (6-25 Adc) - 1.1_en
Last modified: 3 August 2023
Page 214 of 316