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Message |
    
Gerald_D
Registered
Username: Gerald_d
Post Number: 1103
Registered: 11-2005
| | Posted on Sunday, March 04, 2007 - 08:47 pm: | 
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This thread is to develop a specification, and then to identify sources, of an enclosure for the MechMate control system.
a. The first reason for having an enclosure, is to offer protection.....
From the table it is deduced that NEMA 4, 6, 12, & 13 are suitable for this application.
In a lot of countries IP ratings are used instead of NEMA ratings. There is no equivalent table between the two standards. For an indoor MechMate, the rating needs to be IP51 or higher. Original MechMate IP55
b. Construction of the enclosure:
1. To have a hinged door.
2. Capable of wall-mounting with air circulating past the back wall as well.
3. Made of steel or aluminium for heat conduction and EMC shielding
c. Size of enclosure:
1. Height: 550mm [22"] is comfortable, 500mm [20"] minimal.
2. Depth: 220mm [8.5"] is comfortable, 150mm [6"] getting very tight. 200mm [8"] is probably ideal.
3. Width: 400mm [16"] is comfortable, and minimal for G202 drivers, while the G203V drivers allow one to cramp it down to 350mm [14"]. The major determinant of the width is passing the driver heatsink through the door opening which is narrowed down because of gasketing. Strictly speaking, the enclosure width should be given by the opening size and not the overall size.
For reference, the original Mechmate enclosure is 550Hx400Wx220D external.
d. Accessories purchased with the enclosure:
Many enclosures are sold with a removable "sub-panel" or back-plate. We do need one of these, but it will invariably be more economical to make our own. (It is a flat sheet of metal with some holes in it). We need quite a strong plate to carry the weight of the toroid transformer, after it has gotten a big fan hole cut through its center. Also it is convenient to tap threads into the plate and thus allow components to be easily removed - the plate needs to be at least 2mm [12gauge] thick for threads. |
Gerald_D
Registered
Username: Gerald_d
Post Number: 1104
Registered: 11-2005
| | Posted on Sunday, March 04, 2007 - 09:17 pm: |
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Possibilities:
FactoryMation SCE-20168ELJ : Saginaw, 20"H x 16"W x 8"D, NEMA 4 $113.00
. . . . .
. . . . .
???? |
Loren Gameros
Registered
Username: Moron_wizard
Post Number: 27
Registered: 02-2007
| | Posted on Wednesday, April 11, 2007 - 08:08 pm: |
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Gerald,
I followed your advice on the FactoryMation box and it works great.
It came powder coated.
Good recommendation. |
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70. Control Systems