Position interlocks

The magnet should only be moved into position if the Scanner Y is at its 0 position. This position is actually 42.5 on the absolute encoder. We use the position on the encoder, as this one does not change if somebody gets the idea to set a different offset in the motor.

No	Property	Op	Value
c1	SCS_CDIFFT_SAM/ENC/SCANNERY.value	GT	42.6
c2	SCS_CDIFFT_SAM/ENC/SCANNERY.value	LT	42.4

No	Logic	Action
a1	c1 or c2	CStop

Vacuum interlocks

The situation for vacuum interlocks is currently not ideal for the FFT. Two turbo pumps pump the FFT, one is in loop 4 and the other one temporarily in looop 7.

This is all very unfortunate given that the FFT is the chamber opened the most, and things actually can get damaged. At least we can interlock the slow roughing valve not to be opened too quickly.

The SRV fast valve should only be opened when the pressure is below a couple of tens of mbar.

No	Property	Op	Value
c1	SCS_CDIFFT_VAC/GAUGE/CC15.value	GT	0.03

No	Logic	Action
a1	c1	CClose

The SRV slow valve should be closed if the fast valve is open.

No	Property	Op	Value
c1	SCS_CDIFFT_VAC/VALVE/SRV1.state.IsClosed	EQ	FALSE

No	Logic	Action
a1	c1	COff

The valves on top of the turbo pumps should close if the turbo pump goes below 80%. They should also close if the roughing pressure is bad or the roughing valve is closed. If the slow roughing valve is open, however, it should be able to open the gate valve. This happens during pump down.

No	Property	Op	Value
c1	SCS_CDIFFT_VAC/TPUMP/TP1.state.RPM80	EQ	FALSE
c2	SCS_CDIFFT_VAC/GAUGE/P6.Value	GT	0.1
c3	SCS_CDIFFT_VAC/DCTRL/SRV1.Value	EQ	FALSE
c4	SCS_CDIFFT_VAC/VALVE/SRV1.state.IsOpen	EQ	FALSE

No	Property	Op	Value
c1	SCS_CDIDET_FCCD2M/TPUMP/TP1.state.RPM80	EQ	FALSE
c2	SCS_CDIFFT_VAC/GAUGE/P6.Value	GT	0.1
c3	SCS_CDIFFT_VAC/DCTRL/SRV1.Value	EQ	FALSE
c4	SCS_CDIFFT_VAC/VALVE/SRV1.state.IsOpen	EQ	FALSE

No	Logic	Action
a1	((c1 or c4) and c3) or c2	CClose

No	Logic	Action
a1	((c1 or c4) and c3) or c2	CClose