Page 440 - ARM Based Microcontroller Projects Using MBED

426 17. STM32 NUCLEO EXPANSION BOARDS

FIG. 17.20, CONT’D

17.15 INDUSTRIAL DIGITAL OUTPUT EXPANSION
BOARD (X-NUCLEO-OUT01A1)

This is an industrial output expansion board (Fig. 17.21) based on the galvanic octal power
solid-state relay ISO8200BQ. The board provides eight relay-based outputs with LED indica-
tors. The maximum output current per output channel is 700mA.
The basic features of this expansion board are as follows:
• operating voltage 10.5–33V
• galvanic isolated outputs
• 700mA output current per channel
• thermal protection
• Arduino UNO R3 compatible connector
This board is described in more detail since a project is given in this section using this
board. As shown in Fig. 17.21, an eight-way screw-type connector is provided at the bottom
part of the board for making the output connections. Just above these connectors are the eight
LEDs. At the top middle part of the LED a two-way screw connector (J2) is provided for ap-
plying external voltage (7–12V) if the board is to be operated, for example, with a battery. An
external 10.5–33V DC voltage must be connected to the two-way screw terminal J1, located at
the bottom right-hand corner of the board.
The X-NUCLEO-OUT01A1 expansion board has eight inputs, labeled IN1 to IN8 that
correspond to the eight outputs. Jumper J4 selects the mode of operation as SYNC or