Inficon Cygnus 2 User Manual

3 - 27
Cygnus 2 Operating Manual
3.5.1.2 XtalSix (CrystalSix)
On power-up, all crystals are read to determine how many good and bad crystals
are present. Cygnus 2 uniquely identifies and tracks all six positions in the
CrystalSix.
During deposition, Cygnus 2 will automatically switch to the next position with a
good crystal when there is a crystal failure. When the last good crystal fails the Xtal
Fail message is displayed, the Xtal Fail state becomes true and Cygnus 2 will go
directly to Time Power, POST DEP, STOP Material or STOP ALL, as appropriate.
When the Sensor selected is a XtalSix, the relay contacts are pulsed closed for one
second, opened for one second, closed for one second, then opened for each
position. The first one second closure will advance the CrystalSix carousel into an
intermediate position between two crystals. Opening the closure for one second
allows the ratchet mechanism to relax whereupon the second contact closure
advances the next crystal into the proper position.
3.5.1.3 Xtal12 (Crystal12)
On power-up, Cygnus 2 will rotate the Sensor until position 1 is detected. It will
continue to rotate through the other 11 positions to determine the state of all
crystals. At the conclusion of the sequence, the Sensor Information screen shows
the Sensor in position 1 and the position number of any failed crystals. The
Crystal12 has resistors electrically in parallel for each of the 12 positions. Cygnus
2 verifies that the resistance value is correct at each position. If the value is not as
expected, Cygnus 2 pulses again and rechecks the position. If position 1 is not
detected or after 13 pulses of the wrong value, Cygnus 2 reports a Crystal Sw Fail
message. In that case, all crystals are also marked as failed, except for current
position status.
When the carousel is removed from the Sensor for crystal replacements, Cygnus
2 displays Carousel Open. This message also appears if the connection between
the XIU (oscillator) and the sensor is absent. After the carousel is replaced, Cygnus
2 assumes the current position is 12 and all crystals are failed. A Crystal Switch or
Rotate Sensor function must be initiated in the Sensor Information screen or via
Remote Communication to enable Cygnus 2 to catalog the state of all crystals and
to return to position 1. This must also be done after the Sensor type has been
changed to Xtal12. The Rotate Head function is permitted only if the Material is in
Ready, Stop or Idle.
During deposition, Cygnus 2 will automatically switch to the next position with a
good crystal when there is a crystal failure. When the last good crystal fails, the
CrystalFail message is displayed, the Xtal Fail state becomes true and Cygnus 2
will go directly to Time Power or STOP ALL, POST DEP, STOP Material, as
appropriate.
When configured for a Xtal12, the relay contacts are only pulsed closed for one
second then opened again once for each position. There is no intermediate
position.

Inficon Cygnus 2 Specifications

General

Brand	Inficon
Model	Cygnus 2
Category	Controller
Language	English