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Released Rev. C
2000-1252-01
Page 21
VersaPort 2200 Technical Manual
Chapter 2: Theory of Operation
VersaPort Components
a
2. If an error is found, an error message is displayed on the screen. Correct the failure,
and use the F8 and ARROW keys to clear the alarm.
3. Press F2 to return home and repeat step 2.
VersaPort Components
Mechanical
The VersaPort incorporates an Asyst Standard Mechanical InterFace (SMIF)-Port
(complies with SEMI standards E19.4) that consists of the port plate assembly and port
door.
The port plate assembly is supported off of the base assembly by one side extrusion
which contains a precision vertical lead screw. The lead screw is ball-bearing supported
and driven through a single timing belt by a servo motor. The lead screw provides vertical
movement for the port plate, Pod top and telescoping minienvironment.
The port plate houses the Pod latch/unlatch mechanism. The wafer seater mechanism is
mounted to the bottom of the port plate. The wafer seater rotates toward the cassette to
push an extended wafer back into its slot.
The rear shroud covers the Process Tool opening when the VersaPort is at the Home
(closed) position.
Port Door
Standard VersaPort (no shuttle):
The port door is fixed to the base assembly. The port
door contains the Pod door lock/unlock mechanism and Pod-in-Place switch.
VersaPort with shuttle:
The port door is mounted to the base assembly on a horizontal
lead screw and track. The port door is driven with a timing belt by a servo motor and is
programmable to a maximum of four-and-one-half inches of travel. The port door contains
the Pod door lock/unlock mechanism and Pod-in-Place switch.
Electronics
The VersaPort’s central processing unit (CPU) circuit board is integrated into the Main
VersaPort Control Interface board. The Interface board controls the operation of the
VersaPort and is enclosed in the base of the VersaPort.
Electrical Power
The +24 vdc (+10%, -5%) input power is applied through external connector J27 to the
Main Control PCB. The power cable pin configuration is shown in the Installation
Instructions. The input voltage is sent to a reverse-voltage-protection diode that ensures
only the correct polarity 24 vdc is accepted. A circuit monitors over/under voltage and
over-current situations to control the +24 vdc transistor power switch. An acceptable band
of +19.5v to +30.0v (nominal) input voltage is required to allow the transistor switch to
turn on. Outside this voltage band, the transistor switch will be off.
Summary of Contents for VersaPort 2200
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