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Revision 4 as of 2011-11-24 18:28:43
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Editor: BobAdamson
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Revision 5 as of 2011-11-24 18:56:23
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Editor: BobAdamson
Comment:
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Draft Bill of Materials === Draft Bill of Materials ===
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=== Internal PLC IO Requirements ===
 * 10x24V DC input for can sensing (would it be worth multiplexing this?)
 * 7x24V DC input for front door buttons (ditto with the multiplexing question)
 * 1x24V DC input for manual dispense mode button
 * 10x?110V? relay outputs (this assumes linear actuators return by themselves)
 * 7x DC outputs for empty slot display

Draft Bill of Materials

Amount

Item

Use

Model

Cost

7

microswitches

front button switches

20

microswitches

each slot has double microswitches, there are 10 slots

7

5mm round white LED's

replace empty slot globes

7

led mounts for empty slot display

may not be needed, depends on how we mount the LEDs

7

resistors

empty slot LED protection

1

stripboard or veroboard

mount LED resistors

10

6 pin connectors

one for each slot actuator unit

??

? pin connectors

assorted connections between cables

1

manual drop button

1

PLC

brain

FMD88-10

1

PLC expansion card

additional IO

EXP4040

50m?

20 different coloured wires

general rewiring

cable ties

cable loom/heatshrink tube/electrical tape

terminal blocks

1

can rust proofing spraypaint

Internal PLC IO Requirements

  • 10x24V DC input for can sensing (would it be worth multiplexing this?)
  • 7x24V DC input for front door buttons (ditto with the multiplexing question)
  • 1x24V DC input for manual dispense mode button
  • 10x?110V? relay outputs (this assumes linear actuators return by themselves)
  • 7x DC outputs for empty slot display