Atmospheric Pre-aligner Manual
4000-0015 Rev 1
39
Port G is an internal 8-bit port on the Pre-aligner I/O Board. Port G
constantly monitors the status of eight subsystems within the controller. In
normal operating mode, Input Port G should be set to all zeros if there are
no problems.
The following table describes each bit when it is set to 1 (high) and how to
correct the problem.
Bit Description Corrective Action
0 Internal amplifier connections
or pre-aligner signal cable.
Check I/O to Galil cable, I/O to amplifier board,
and the signal cable. If all cables are OK, replace
the I/O board. If a problem persists, contact
Customer Support.
1 Motor off. Check the interlock switch (EMS/MOFF) to ensure
it is in the correct state.
2 Stop input. Check stop input.
3 Amplifier Board Under Power
indicator
Check green LED on amplifier board.
• If ON (board under power), check I/O to
amplifier board cable and I/O board.
• If OFF (board has no power), and there is
voltage to the amplifier board (P3 pin # 2 and 3
should be 41V to 46V), replace the amplifier
board. If no voltage, check motor power supply
(torroidal transformer) and relay.
4 Motor Power Supply indicator Check I/O to power supply cable and I/O board.
5 Robot Interface Board Power
Supply indicator. Usually
accompanied by bit 3.
Check the Power interface board (located above the
switching power supply).
• If the LED lights, check I/O to power supply
cable and I/O board.
• If LED is not ON, check relay input for 5V.
6 Switching Power Supply
indicator
None. This condition occurs approximately 30 ms
before the controller shuts down.
7 Bus Power Good indicator N/A. Does not occur during diagnostics.
Testing Input G
VALUE:
XXXXXXXX
Generate Error
To Next Page
Loading...
