Gemco Semelex Safetimeter 1999 Series Operating Manual

Self-contained, portable electronic stop-time meter

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Series 1999
Semelex® Safetimeter
Operating Manual
1999SEMC
SELF-CONTAINED, PORTABLE
ELECTRONIC STOP-TIME METER

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Summary of Contents for Gemco Semelex Safetimeter 1999 Series

  • Page 1 Series 1999 Semelex® Safetimeter Operating Manual 1999SEMC SELF-CONTAINED, PORTABLE ELECTRONIC STOP-TIME METER...
  • Page 2: Table Of Contents

    Contents Chapter 1: Overview ....................1 1.1 Safetimeter Switches and Connectors ..............3 1.2 Theory of Operation ....................4 Chapter 2: Unpack & Set-Up ..................4 2.1 Set-Up and Test ....................4 Chapter 3: Operating Instructions ................5 3.1 Placement of Position/Velocity (P/V) Transducer ..........5 3.2 Set the Control Start Point (CSP) .................
  • Page 3: Chapter 1: Overview

    Operation Manual Chapter 1: Overview The SEMELEX is a self-contained, portable, multi-purpose diagnostic system for press room automation and operator safety device analysis. The Semelex can quickly calculate machinery stopping time and determine the minimum safe distance for safety devices including light curtains, palm buttons, E-Stop and safety mats. The 1999SEMC Semelex II Safetimeter Test Set is field proven to accurately measure press stop time and safety distance to verify compliance with federal and state requirements.
  • Page 4 Series 1999SEMC Semelex® Safetimeter Auto-Flag (A/F) This assembly is attached to the Auto-Hand to test presses equipped with electronic guards, i.e. photoelectric barrier guards (light curtains) or capacitance type guards (conduit rail sensors). Optional: Manual Start Switch This switch plugs into the MANUAL START jack on the Safetimeter panel and are used to manually start the Safetimeter timing.
  • Page 5: Safetimeter Switches And Connectors

    Operation Manual 1.1: Safetimeter Switches and Connectors ON/OFF This is the unit’s power button. The button can be depressed to turn it ON or OFF. There is a timer sequence built into the controller that will time out after a fixed duration of time if the meter is not being used.
  • Page 6: Theory Of Operation

    Series 1999SEMC Semelex® Safetimeter 1.2: Theory of Operation The P/V transducer measures the open height of a press. When this measurement coincides with the preset CSP position, and the ram is traveling in the direction selected on the TIME UP/TIME DOWN switch, the Auto-Hand will release one of the two run controls or press an E-STOP control to initiate the press stop.
  • Page 7: Chapter 3: Operating Instructions

    Operation Manual Stop the cable from rewinding or pull the magnet out. The display will stop counting and show the results. 10. Again, pull the cable out approximately 24 inches. The display’s current value will remain because the Safetimeter is set in the TIME DOWN direction. 11.
  • Page 8: Set The Control Start Point (Csp)

    Series 1999SEMC Semelex® Safetimeter 3.2: Set the Control Start Point (CSP) There are three ways to set the CSP depending on the following conditions. Proceed to the section that best fits your condition. A. Setting the CSP dial when the press stroke is known. B.
  • Page 9: Set The Time Up/Time Down Switch

    This switch must be properly set even when a manual test, with the optional manual start switch, is performed. NOTE: The Gemco Semelex II Safetimeter has the capability to check both down and up stop times to aid in setting the press counterbalance. For best results, the down stop time test should be initiated at 90 degrees, and the up stop time should be initiated at 270 degrees.
  • Page 10: Using Auto-Hand

    Series 1999SEMC Semelex® Safetimeter 3.4: Using Auto-Hand The Auto-Hand is designed to release or push press controls. It can release a two-hand control, inch button or push an E-Stop button. Using Auto-Hand with Two Hand or Inch Control (Release to Stop) The Auto-Hand releases or pushes buttons with a spring- loaded plunger.
  • Page 11: Using Auto-Flag With Auto-Hand

    Operation Manual 3.5: Using Auto-Flag with Auto-Hand Auto-Flag is used in conjunction with Auto-Hand to test the entire press control loop which includes electronic guards, i.e. photoelectric barrier guards (light curtains) or capacitance type guards (conduit rail sensor). This test initiates a press stop by obstructing the sensing area with Auto-Flag, causing the guard to activate a stop signal in the press.
  • Page 12: Using Optional Remote Tachometer

    Series 1999SEMC Semelex® Safetimeter 2. Normally Closed Switch (PSD0110309). Designated with a red plug. Used over an E-STOP button, this switch starts the Safetimeter timing when pressed. Note: The Normally Closed switch has been obsoleted and is no longer available for sale. Perform the following Steps: 1.
  • Page 13: Test Presses Running In A Continuous Mode

    Operation Manual 3.8: Test Presses Running in a Continuous Mode Because the Safetimeter sends a release command to the Auto-Hand each time the P/V transducer crosses the Control Start Point (CSP), a special method must be used to test a press running in a continuous mode. Typically, this test is performed on the press’s Emergency Stop (E-STOP) button or a presence sensor.
  • Page 14: Set Press Counterbalance

    3.9: Set Press Counterbalance The Gemco Semelex II Safetimeter has the capability of checking both down and up stop times to aid in setting the press’s counterbalance. For best results, the down stop time test should be initiated at 90 degrees and the up stop time test at 270 degrees.
  • Page 15: Chapter 4: Certification And Warranty

    Operation Manual Chapter 4: Certification and Warranty The factory certifies that the Gemco Series 1999 Semelex II Safetimeter has been inspected and tested at the factory prior to shipment and meets requirements defined by the contract under which it is furnished.
  • Page 16 Series 1999SEMC Semelex® Safetimeter Chapter 5: Part Numbering / Specifications Safetimeter Part Number Description 1999SEMC (Replaces 1999SEM) Standard Semelex Safetimeter Test Set for Full and Part Revolution Clutches. Includes Meter, Position/Velocity Transducer, Autohand and Accessories. Standard Equipment Includes: (1) Safetimeter SD0500901 (1) P/V Transducer SD0500400...
  • Page 17: Chapter 5: Specifications

    Operation Manual Specifications Electronics Display 7-Segment Red LED Stopping Time (Ts) 9.999 Seconds - Maximum Safety Distance (Ds) 999.9 Inches - Maximum Accuracy +/- 1% of Reading Press Stroke 49 inches - Maximum Power Supply 115 Vac - 50/60Hz Supply/Charger 6VDC Rechargeable Battery Battery Type 6 Volt, sealed lead acid...
  • Page 18 1980 ROTATING CAM LIMIT SWITCH 2110 SHUT HEIGHT MONITOR • 2 to 40 circuits • Interfaces with our LDT’s and Resolver • NEMA 1, 4, 5, 7, 9, 12 enclosures • Use as a simple indicator of position, or as a •...

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