Maintenance Model 6DS-SP Planarizer
6 - 4 Version 4.0 - February 1998
Transformer 2T is a step down transformer providing single phase 120 VAC
power to three DC voltage power supplies, 1PS, 2PS, and 3PS , and to two 120
VAC duplex receptacles. The two duplex receptacles are AC outlets providing
power for the control computer in the lower cabinet and the display monitor at
the top of the machine.
Transformer 3T is a step down transformer providing 120 VAC power to four
individual motor drive boards (1SCR, 2SCR, 3SCR, and 4SCR), one 120 VAC
quad convenience power outlet, located below the left electrical cabinet, and four
servo axis motor contactors, [1M, 2M, 3M, and 4M. Also powered on this
circuit are solenoids for D. I. water flush for slurry 1 and slurry 2, table coolant
and shunt, and the bridge lube motor.
Inline circuit breakers protect each of the three transformers, 1T, 2T, and 3T, on
both the primary and secondary circuits. Circuit breakers also protect individual
parallel branch circuits on the secondary side of transformer 2T.
DC DISTRIBUTION
The DC voltage distribution consists of three individual power supplies, 1PS for
24 VDC, 2PS for +/- 15 VDC, and 3PS for 5 VDC, and their respective terminal
blocks, 3TS, 4TS, and 5TS. Each DC power supply has its terminal strip to
branch out DC power throughout the machine as shown in the remaining
electrical schematics.
Power supply 1PS sources 24 VDC power for inputs and outputs on the Digital
I/O Racks 1MR, 2MR, 3MR, and 4MR. These outputs enable relays 1CR
through 32CR and solenoid valves for pneumatic, vacuum, and water lines.
Power supply 2PS sources +/- 15 VDC power for all the analog inputs and
outputs found on the Analog I/O Racks. Power supply 3PS provides +5 VDC to
the Digital I/O Racks 1MR, 2MR, 3MR, and 4MR and the two Analog I/O
Racks to power their internal circuitry.
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