SMC Networks 5000 manual Section D.2 Valve Type a Lockout Procedure, Power is on

Page 74

Appendix D Lockout Procedure For Air Controlled Systems

Section D.1 General Lockout Considerations

The OmniLink 5000 auto-setup card automatically controls pressures in cushions and counterbalances. Because of this there are special considerations to keep in mind when locking an air system out (at 0 pressure).

Note that cushions can be vented to zero pressure and the press will be allowed to run. A counterbalance that has been vented to zero pressure, however, is considered a stop condition by the press control.

While a type “A” valve has only integrated Fill/Dump valves, the type “B”, and “C” integrated air valves (See Section 3.1 for a discussion of valve types) that Link uses to control air pressure on cushions and counterbalances has a manual as well as an automatic section. The manual section for these valves looks like a typical manual air pressure control with a regulator followed by a check valve. There is a pressure gauge (“G1”) after the regulator but before the check valve, and a gauge (“G2”) at the output air port after the check valve. When raising the pressure by turning the manual regulator “up” the pressure forces the check valve open and gauge “G1” will be approximately equal to gauge “G2”. However when lowering the pressure at the manual regulator, the check valve will prevent the actual output pressure from going down (assuming there are no leaks). A LOX valve on the output is used to blow down the system to lower the pressure. In either case, gauge “G2” shows the true pressure in the counterbalance or cushion.

The automatic section of type “B” and “C” valves (and the only section of type “A” valves) consists of a fill valve and a dump valve. A transducer mounted on the counterbalance surge tank or cushion electronically reports the pressure of the system to the auto-setup board. If the pressure is too low the fill valve puts more air in the system. If the pressure is too high the dump valve vents air to atmosphere.

Section D.2 Valve Type “A” Lockout Procedure

To lock out type “A” valves:

1)Set the air pressure setpoint for the system to 0 psi. This will cause the control to open the dump valve and leave it open to vent the system. Note that this valve will be open only as long as the control is powered. If the system is set to 0 pressure, but the control is turned off before the system can blow down, it will still be pressurized.

2)Use a LOX valve, if present, to dump the air system.

Note!

Step 1 MUST be done even if a LOX valve is opened in step 2 since the

 

control may try to pressurize the system using the Fill/Dump valve if the

 

power is on!

April 17, 2000 Man ual Versio n 1.0

D.1

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Page 73 Page 75
Contents OmniLink Table of Contents April 17, 2000 Man ual Versio n Iii April 17, 2000 Man ual Versio n Cushion Control Section IntroductionCounterbalance Control Shut Height Control Hydraulic Overload Control2 Text Entry Parameter Entry and Access Control1 Numeric Entries April 17, 2000 Man ual Versio n 2 Key or Password Mode Access Control1 Key Only Mode 6 Access Control Operation 3 Password Only Mode4 Key and Password Mode 6.1 RUN/PROG Key Switch Operation6.2 Password System Operation Example Password Entry SequenceApril 17, 2000 Man ual Versio n Installation Auto-Setup Module Installation April 17, 2000 Man ual Versio n Type B Valve Configuration Valve SystemsType C Valve Configuration Counterbalance Control InstallationAuto-Counterbalance with Type a Integrated Valve 1 Counterbalance Pressure Transducer Mounting 2 Counterbalance Air Valve System Mounting 3 Counterbalance System WiringCushion System Installation 2 Cushion Air Valve System Mounting 3 Cushion System Wiring1 Cushion Pressure Transducer Mounting 1 Rotary Transducer Mounting Hydraulic Overload System InstallationSlide Adjust System Installation 2 Rotary Slide Adjust Wiring 3 Linear Transducer Mounting4 Linear Transducer Slide Adjust Wiring Configuration Setting up the OmniLink 5000 for the Auto-Setup ModuleConfiguring the Auto-Setup board Example Air Configuration ScreenHardware Detected HelpAir Slot Air PressureMin. Die Weight Regulator settingMax. Die Weight Display Weight AsDisplay Force As Max. Cushion ForceMin. Cushion Force Max. Trip PointTransducer Types Fault TimeTolerance Valve Type2 Configuring Slide Adjust Modules Shut Height Units Slide SlotShutheight Pulse Distance Upper LimitLower Limit Pulse TimeSerious injury or death 2.1 Calibrating Linear Slide Adjust SystemsLock Time 2.2 Calibrating Rotary Slide Adjust Systems Or deathSystem may fail to calibrate Resolver TurnsApril 17, 2000 Man ual Versio n April 17, 2000 Man ual Versio n Section Operation April 17, 2000 Man ual Versio n Actual Position Slide Adjust OperationSetpoint Status Fault1 Slide On, Manual, and Off Settings MAN manualApril 17, 2000 Man ual Versio n 3 Manual Slide Movement 4 Slide Fault and StatusDie Weight Set Pressure SetActual Pressure 1 Air System On, Manual, and Off SettingsPress Trip Set 2 Pressure and Force Setpoints3 Air System Fault and Status Job Storage and Recall IssuesApril 17, 2000 Man ual Versio n Diagnostics Fault and Status Messages Main Module MessagesUnable to Dump Pressure Switch LowUnable to Fill Max. Press. ExceededSlide Adjust Fault Messages Slide Adjust Status Messages Min Position Reached Auto-AdjustingWaiting S/A Switch Moving UpSection A.1 Example Counterbalance Configuration Section A.2 Example Cushion Configuration Section A.3 Example Hydraulic Overload Configuration April 17, 2000 Man ual Versio n Section A.4 Example Linear Slide Adjust Configuration April 17, 2000 Man ual Versio n Section A.5 Example Rotary Slide Adjust Configuration April 17, 2000 Man ual Versio n April 17, 2000 Man ual Versio n Appendix B Typical Wiring Diagrams Figure B.1 Typical Counterbalance Wiring DiagramFigure B.2 Typical Cushion Wiring Diagram Figure B.3 Conceptual Dual Resolver Mounting Figure B.4 Typical Amci Dual Resolver Wiring Diagram Figure B.5 Typical Gemco Dual Resolver Wiring Diagram Figure B.6 Conceptual Linear Transducer Mounting Figure B.7 Typical Gemco Linear Transducer Wiring April 17, 2000 Man ual Versio n Figure B.11 Typical Slide Air Motor Solenoid Wiring April 17, 2000 Man ual Versio n Appendix C Installation Of OmniLink 5000 Firmware Figure C.1 Logic Module Firmware Chip LocationsApril 17, 2000 Man ual Versio n Must be done even if a LOX valve is opened in since Section D.2 Valve Type a Lockout ProcedurePower is on Section D.3 Valve Type B Lockout Procedure Section D.4 Valve Type C Lockout ProcedureApril 17, 2000 Man ual Versio n April 17, 2000 Man ual Versio n Section E.2 Shut height Calibration Sheets April 17, 2000 Man ual Versio n Section F.2 5000-10B Linear Shut Height Control Board Section F.3 5000-10C Rotary Shut Height Control Board

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