Tandem Beamline Isolation (Fast Valve) System - Revision history

Pbarber: /* PLC Programming */

2026-02-26T15:34:51Z

PLC Programming

← Older revision		Revision as of 11:34, 26 February 2026
Line 78:		Line 78:

	===PLC Programming===		===PLC Programming===
	Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.		Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible. A PDF version of the program can be accessed at the following link:

	[[Media:FV INTLK TANDEM Ver 3r0 26feb26.pdf]]		[[Media:FV INTLK TANDEM Ver 3r0 26feb26.pdf]]

			The wiki does not permit my uploading the click data file. I'll consult for other possibilities and note them here.

	===VCP===		===VCP===

Pbarber: /* PLC Programming */

2026-02-26T15:31:34Z

PLC Programming

← Older revision		Revision as of 11:31, 26 February 2026
Line 80:		Line 80:
	Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.		Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.

	[[Media:FV INTLK TANDEM Ver 3r0 26feb26.~~ogg~~]]		[[Media:FV INTLK TANDEM Ver 3r0 26feb26.pdf]]

	===VCP===		===VCP===

Pbarber: /* PLC Programming */

2026-02-26T15:30:46Z

PLC Programming

← Older revision		Revision as of 11:30, 26 February 2026
Line 80:		Line 80:
	Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.		Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.

	[[Media:FV INTLK TANDEM Ver 3r0 26feb26~~.pdf~~.ogg]]		[[Media:FV INTLK TANDEM Ver 3r0 26feb26.ogg]]

	===VCP===		===VCP===

Pbarber: /* PLC Programming */

2026-02-26T15:30:16Z

PLC Programming

← Older revision		Revision as of 11:30, 26 February 2026
Line 80:		Line 80:
	Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.		Programming of the CLICK PLC is accomplished using [https://www.automationdirect.com/clickplcs/free-software/free-click-software freely available software] from [https://www.automationdirect.com Automation Direct]. The PLC is programmed using ladder logic w/ a few advanced features such as timers, clocks, etc. The program is heavily commented in the hope that whoever follows will understand it with as little difficulty as possible.

	~~TODO~~: ~~I want to put the CURRENT program file here in both click and PDF formats~~.		[[Media:FV INTLK TANDEM Ver 3r0 26feb26.pdf.ogg]]

	===VCP===		===VCP===

Pbarber: /* Fault Indication and Assessment */

2025-12-05T20:43:41Z

Fault Indication and Assessment

← Older revision		Revision as of 16:43, 5 December 2025
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	== Fault Indication and Assessment ==		== Fault Indication and Assessment ==

	When a Tandem vacuum system fault occurs, one of the sensors will detect it and make a transition from GOOD to BAD. This transition is detected by the PLC and the system will enter fault mode. ~~Most~~ of the beamline isolation valves will immediately shut~~. The Tandem operator must then survey each vacuum station and determine~~ the ~~cause~~ of the ~~fault~~. ~~Once~~ the ~~cause of~~ the fault ~~is identified, corrected, and the vacuum status restored~~, the valve ~~may be reopened~~. ~~Other valves in the system, with good vacuum on each side may be opened at any time after the system trips.~~		When a Tandem vacuum system fault occurs, one of the sensors will detect it and make a transition from GOOD to BAD. This transition is detected by the PLC, the offending sensor is recorded, and the system will enter fault mode. All of the beamline isolation valves will immediately shut, with the exception of the SNICS Source exit valve. This valve remains open to sustain pumping on the source inflector magnet section, unless the SNICS Source sensor originates the fault. In this case, the SNICS Source exit valve will shut also.

	Occasionally, a transient condition may generate a fault. This occurs when a vacuum sensor makes a GODD to BAD transition, which trips the system, but then transitions from BAD to GOOD before an operator can identify the cause. In order to ~~prevent this situation~~, the PLC is programmed to "remember" which station caused the fault. Should the offending sensor transition back to GOOD, the PLC will indicate that the vacuum is GOOD by lighting the green lamp, but will flash the red BAD lamp at a 0.5 sec rate to indicate which sensor caused the fault. When this occurs, before the valve can be opened, one must "acknowledge" the transient indicator by pressing the OPEN/ACK switch. This will stop the BAD lamp from flashing and reset the PLC transient tracking system. The valve may now be opened by the OPEN/ACK switch as usual.		The Tandem operator must then survey each vacuum station and determine the cause of the fault. Once the cause of the fault is identified, corrected, and the vacuum status restored, the valves may be reopened. Other valves in the system, with good vacuum on each side may be opened at any time after the system trips, even if the failure has not been addressed yet.

			Occasionally, a transient condition may generate a fault. This occurs when a vacuum sensor makes a GODD to BAD transition, which trips the system, but then transitions from BAD to GOOD before an operator can identify the cause. In order to support useful troubleshooting, the PLC is programmed to "remember" which station caused the fault. Should the offending sensor transition back to GOOD, the PLC will indicate that the vacuum is GOOD by lighting the green lamp, but will flash the red BAD lamp at a 0.5 sec rate to indicate which sensor caused the fault. When this occurs, before the valve can be opened, one must "acknowledge" the transient indicator by pressing the OPEN/ACK switch. This will stop the BAD lamp from flashing and reset the PLC transient tracking system. The valve may now be opened by the OPEN/ACK switch as usual.

	== Fault Integration with Tandem Pelletron ==		== Fault Integration with Tandem Pelletron ==

Pbarber: /* PLC */

2025-12-05T20:15:04Z

PLC

← Older revision		Revision as of 16:15, 5 December 2025
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	* Relay, Model # QM2X1-D24, Quantity 1 used, Quantity 2 spare.		* Relay, Model # QM2X1-D24, Quantity 1 used, Quantity 2 spare.

	{{ Notice \| As 05 Dec 2025, the QM2X1-D24 Relay had been DISCONTINUED, WITHOUT REPLACEMENT. The MCP uses one of these relays for the PELOTRON interface and each VCP uses one of these relays for valve control.}}		{{ Notice \| As of this writing (05 Dec 2025), the QM2X1-D24 Relay had been DISCONTINUED, WITHOUT REPLACEMENT. The MCP uses one of these relays for the PELOTRON interface and each VCP uses one of these relays for valve control.}}

	===PLC Programming===		===PLC Programming===

Pbarber: /* VCP */

2025-12-05T20:13:52Z

VCP

← Older revision		Revision as of 16:13, 5 December 2025
Line 83:		Line 83:
	There is a Valve Control Panel (VCP) associated with each valve. The VCP interfaces directly with the MCP and the valve directly. All VCPs are identical and can be interchanged. The logic associated with the directionality of the sensors is actually accomplished via the wiring between the VCP and the MCP and can not be changed easily. This is why some VCPs will have the upstream sensor on the left, while other VCPs will have the upstream sensor on the right. Re-orientation of the VCP's face direction cannot be done w/o changing the wiring of the system.		There is a Valve Control Panel (VCP) associated with each valve. The VCP interfaces directly with the MCP and the valve directly. All VCPs are identical and can be interchanged. The logic associated with the directionality of the sensors is actually accomplished via the wiring between the VCP and the MCP and can not be changed easily. This is why some VCPs will have the upstream sensor on the left, while other VCPs will have the upstream sensor on the right. Re-orientation of the VCP's face direction cannot be done w/o changing the wiring of the system.

	The VCP uses indicators and combination switch/indicators manufactured by IDEC. A QM2X1-D24 relay is used for energizing the gate valve solenoid valve. Back panel connectors are Molex, and the entire assembly is housed in a Hammond 513-0900 aluminum box.		The VCP uses indicators and combination switch/indicators manufactured by IDEC. An Automation Direct QM2X1-D24 relay is used for energizing the gate valve solenoid valve. Back panel connectors are Molex, and the entire assembly is housed in a Hammond [https://www.newark.com/hammond/513-0900/enclosure-instrument-steel-gray/dp/73J4427 513-0900] aluminum box.

			Note to self: Include the VCP bill of materials here somewhere.

Pbarber: /* VCP */

2025-12-05T16:07:04Z

VCP

← Older revision		Revision as of 12:07, 5 December 2025
Line 83:		Line 83:
	There is a Valve Control Panel (VCP) associated with each valve. The VCP interfaces directly with the MCP and the valve directly. All VCPs are identical and can be interchanged. The logic associated with the directionality of the sensors is actually accomplished via the wiring between the VCP and the MCP and can not be changed easily. This is why some VCPs will have the upstream sensor on the left, while other VCPs will have the upstream sensor on the right. Re-orientation of the VCP's face direction cannot be done w/o changing the wiring of the system.		There is a Valve Control Panel (VCP) associated with each valve. The VCP interfaces directly with the MCP and the valve directly. All VCPs are identical and can be interchanged. The logic associated with the directionality of the sensors is actually accomplished via the wiring between the VCP and the MCP and can not be changed easily. This is why some VCPs will have the upstream sensor on the left, while other VCPs will have the upstream sensor on the right. Re-orientation of the VCP's face direction cannot be done w/o changing the wiring of the system.

	The VCP uses indicators and combination switch/indicators manufactured by IDEC.		The VCP uses indicators and combination switch/indicators manufactured by IDEC. A QM2X1-D24 relay is used for energizing the gate valve solenoid valve. Back panel connectors are Molex, and the entire assembly is housed in a Hammond 513-0900 aluminum box.

Pbarber: /* VCP */

2025-12-05T15:56:58Z

VCP

← Older revision		Revision as of 11:56, 5 December 2025
Line 83:		Line 83:
	There is a Valve Control Panel (VCP) associated with each valve. The VCP interfaces directly with the MCP and the valve directly. All VCPs are identical and can be interchanged. The logic associated with the directionality of the sensors is actually accomplished via the wiring between the VCP and the MCP and can not be changed easily. This is why some VCPs will have the upstream sensor on the left, while other VCPs will have the upstream sensor on the right. Re-orientation of the VCP's face direction cannot be done w/o changing the wiring of the system.		There is a Valve Control Panel (VCP) associated with each valve. The VCP interfaces directly with the MCP and the valve directly. All VCPs are identical and can be interchanged. The logic associated with the directionality of the sensors is actually accomplished via the wiring between the VCP and the MCP and can not be changed easily. This is why some VCPs will have the upstream sensor on the left, while other VCPs will have the upstream sensor on the right. Re-orientation of the VCP's face direction cannot be done w/o changing the wiring of the system.

	The VCP ~~contains switches~~ manufactured by		The VCP uses indicators and combination switch/indicators manufactured by IDEC.

Pbarber: /* PLC */

2025-12-05T15:55:12Z

PLC

← Older revision		Revision as of 11:55, 5 December 2025
Line 71:		Line 71:
	* CLICK Digital Output Module, Model # [https://www.automationdirect.com/adc/shopping/catalog/programmable_controllers/click_plus_plcs_(stackable_micro_modular)/stackable_i-z-o_modules/c0-16nd3 C0-16ND3], Quantity 3 used, Quantity 1 spare		* CLICK Digital Output Module, Model # [https://www.automationdirect.com/adc/shopping/catalog/programmable_controllers/click_plus_plcs_(stackable_micro_modular)/stackable_i-z-o_modules/c0-16nd3 C0-16ND3], Quantity 3 used, Quantity 1 spare
	* Power Supply, Model # PSB24-060-P, Quantity 1 used, Quantity 2 spare		* Power Supply, Model # PSB24-060-P, Quantity 1 used, Quantity 2 spare
	* Relay, Model # QM2X1-D24, Quantity 1 used, Quantity 2 spare. DISCONTINUED, WITHOUT REPLACEMENT		* Relay, Model # QM2X1-D24, Quantity 1 used, Quantity 2 spare.

			{{ Notice \| As 05 Dec 2025, the QM2X1-D24 Relay had been DISCONTINUED, WITHOUT REPLACEMENT. The MCP uses one of these relays for the PELOTRON interface and each VCP uses one of these relays for valve control.}}

	===PLC Programming===		===PLC Programming===