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Size: 5033
Comment: Scroll friendly URLs, 24V fans?
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Size: 4811
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 12: | Line 12: |
| ||7||microswitches||front button switches|| [[http://au.element14.com/honeywell-s-c/v7-1v19e9/micro-switch-pin-plunger-spdt-21a/dp/1796579|au.element14.com]] || $2.16|| $15.12|| ||20||microswitches||each slot has double microswitches, there are 10 slots, 0.15N|| [[http://au.element14.com/honeywell-s-c/v7-5f17d8/micro-switch-pin-plunger-spdt-3a/dp/1796593|au.element14.com]] || $3.60 || $72|| ||7||5mm round white LED's||replace empty slot globes|| [[http://au.element14.com/vcc-visual-communications-company/vaol-5701wy4/led-5mm-white-1800mcd/dp/1712795|Standard 5mm LEDs, au.element14.com]] ||0.616 ||$6.16 || ||7||resistors||empty slot LED protection|| || || || |
||7 (./) ||microswitches||front button switches|| [[http://au.element14.com/honeywell-s-c/v7-1v19e9/micro-switch-pin-plunger-spdt-21a/dp/1796579|au.element14.com]] || $2.16|| $15.12|| ||20 (./) ||microswitches||each slot has double microswitches, there are 10 slots, 0.15N|| [[http://au.element14.com/honeywell-s-c/v7-5f17d8/micro-switch-pin-plunger-spdt-3a/dp/1796593|au.element14.com]] || $3.60 || $72|| ||7 (./) ||5mm round white LED's||replace empty slot globes|| [[http://au.element14.com/vcc-visual-communications-company/vaol-5701wy4/led-5mm-white-1800mcd/dp/1712795|Standard 5mm LEDs, au.element14.com]] White? Or red for empty, green for non-empty? ||0.616 ||$6.16|| ||7||resistors||empty slot LED protection|| || < $0.05 || || |
| Line 17: | Line 17: |
| ||10||4 pin connectors||one for each slot actuator unit|| || || || ||1||9 pin connector||interface with distribution box|| || || || ||2||16 pin connectors||base of door connectors (left and right stack)|| || || || ||1||8 pin connector||base of door connector (middle stack)|| || || || |
||10||4 pin connectors||one for each slot actuator unit|| http://www.altronics.com.au/index.asp?area=item&id=P5474 , http://www.altronics.com.au/index.asp?area=item&id=P5704 , http://www.altronics.com.au/index.asp?area=item&id=P5644 or related || < $0.90 || < $9.00 || ||1 (./) ||9 pin connector||interface with distribution box|| recycle old connector || || free || |
| Line 24: | Line 22: |
| ||42m||4 core wire, 1mm minimum diameter (to carry 2A) || actuator and empty switch wiring|| http://www.altronics.com.au/index.asp?area=item&id=W2341 4 core, 7 strands, 2.2A rated, $45/100m minus trade discount; [[http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=170619406538|5 core trailer wire]] (if it's big enough); Quote wanted for 4 core mains flex e.g. http://www.blackwoods.com.au/PartDetail.aspx?part_no=04418902 || $0.85/m || Under $45.00 || ||8m||9 core wire || front buttons and lights wiring|| [[http://www.ebay.com.au/itm/0-5mm-9-Core-Irrigation-Cable-per-metre-/300341913942|ebay.com.au 201111]] || $2.15/m|| $17.20|| || ||cable ties|| || || || || |
||42m (./) ||4 core wire, 1mm minimum diameter (to carry 2A) || actuator and empty switch wiring|| http://www.altronics.com.au/index.asp?area=item&id=W3121 || $1.22/m || $51.63|| ||11m (./) ||9 core wire || front buttons and lights wiring|| http://www.altronics.com.au/index.asp?area=item&id=W2712 || 43c/m|| $4.72|| || ||cable ties|| || || Donation? || || |
| Line 29: | Line 27: |
| ||2||galvanising paint|| recoating everything|| Cold gal aerosol [[http://www.diytools.com.au/MOTOSPRAY-Silva-Gal--Pressure-Pack-400g.html|diytools.com.au]] ||$12 || || | ||1 (./) ||galvanising paint|| recoating everything|| Dy-Mark Zinc Gal from Bunnings || $13.95 || $13.95|| |
Aims
- redo all internal wiring and logic, except the refrigeration parts
- make the machine more safe by doing things properly and reducing the voltage of exposed components
- keep the software interface as simple or more simple than before
- make the buttons on the front of the machine work for dispense
- make it extensible so things can be added on
- give the machine a general service where necessary (seals, rust protection, oil)
Draft Bill of Materials
Amount |
Item |
Use |
Model |
Unit Cost |
Total |
7 |
microswitches |
front button switches |
$2.16 |
$15.12 |
|
20 |
microswitches |
each slot has double microswitches, there are 10 slots, 0.15N |
$3.60 |
$72 |
|
7 |
5mm round white LED's |
replace empty slot globes |
Standard 5mm LEDs, au.element14.com White? Or red for empty, green for non-empty? |
0.616 |
$6.16 |
7 |
resistors |
empty slot LED protection |
|
< $0.05 |
|
1 |
stripboard or veroboard |
mount LED resistors |
|
|
|
10 |
4 pin connectors |
one for each slot actuator unit |
http://www.altronics.com.au/index.asp?area=item&id=P5474 , http://www.altronics.com.au/index.asp?area=item&id=P5704 , http://www.altronics.com.au/index.asp?area=item&id=P5644 or related |
< $0.90 |
< $9.00 |
1 |
9 pin connector |
interface with distribution box |
recycle old connector |
|
free |
1 |
manual drop button |
|
|
|
|
1 |
PLC |
brain |
FMD88-10 starter kit, i-STK88-10, http://www.tri-plc.com/ISTK-FMD88-10.htm (including http://www.tri-plc.com/fmd88-10.htm , software, data cable) |
|
$420 |
1 |
PLC expansion card |
additional IO |
EXP1616R, http://www.tri-plc.com/exp1616r.htm |
|
$190 |
42m |
4 core wire, 1mm minimum diameter (to carry 2A) |
actuator and empty switch wiring |
$1.22/m |
$51.63 |
|
11m |
9 core wire |
front buttons and lights wiring |
43c/m |
$4.72 |
|
|
cable ties |
|
|
Donation? |
|
|
cable loom/heatshrink tube/electrical tape |
|
|
|
|
|
terminal blocks |
|
|
|
|
1 |
galvanising paint |
recoating everything |
Dy-Mark Zinc Gal from Bunnings |
$13.95 |
$13.95 |
3 |
Fans to replace refrigeration fans |
|
24V? frozencpu.com 110V? |
|
|
Total |
|
|
|
|
|
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
- 10x100V AC relay outputs
- 7x DC outputs for empty slot display
Process
- empty the machine and bring it into the clubroom. This means everything won't have to be packed up at the end of the day while we're working on it
- remove one of the stacks and test a slot actuator to see what it runs off. This determines what hardware we use to drive everything, so we need to know.
- purchase all required hardware (PLC, wiring, connectors, switches, etc.)
write software (state machine based programming implemented in ladder logic, should be quite trivial)
- wire up on the bench and test
- service the machine. A can of zinc spraypaint wouldn't go astray on some of the rust spots I think. Check all the seals. Oil what needs oiling. Clean what needs cleaning.
- install everything into the machine and test
Measured things
- Can drop process: 400ms on, 500ms off, 660ms on, 300VAC peak-to-peak, 1.8A
- Wire lengths:
- Actuator units 0,1,2,3: 80cm actuator to wire harness, 210cm harness to corner of machine door, 40cm up door, 45cm across, 40cm up to terminal block (4-core minimum) (16.6m)
- Actuator units 4,5: 80cm actuator to wire harness, 170cm harness to corner of machine door, 40cm up door, 45cm across, 40cm up to terminal block (4-core minimum) (7.5m)
- Actuator units 6,7,8,9: 80cm actuator to wire harness, 140cm harness to corner of machine door, 40cm up door, 45cm across, 40cm up to terminal block (4-core minimum) (13.8m)
- Buttons: 75cm across front of door, 60cm down edge of door, 45cm across, 40cm up to terminal block (8-core minimum) (2.2m)
- Lights: 75cm across front of door, 60cm down edge of door, 45cm across, 40cm up to terminal block (8-core minimum) (2.2m)
