Banner LS2e30-300Q8 Instruction Manual

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Banner LS2e30-300Q8 Instruction Manual Manual pdf 37 page image

5 System Operation5.1 Security ProtocolCertain procedures for installing, maintaining, and operating the EZ-SCREEN Type 2 must be performed by eitherDesignated Persons or Qualified Persons.A Designated Person is identified and designated in writing, by the employer, as being appropriately trained andqualified to perform system resets and the specified checkout procedures on the EZ-SCREEN Type 2. The DesignatedPerson is empowered to:• Perform manual resets and hold possession of the reset key (see Reset Procedures on page 37)• Perform the Daily Checkout ProcedureA Qualified Person, by possession of a recognized degree or certificate of professional training, or by extensiveknowledge, training, and experience, has successfully demonstrated the ability to solve problems relating to theinstallation of the EZ-SCREEN Type 2 System and its integration with the guarded machine. In addition to everything forwhich the Designated Person is empowered, the Qualified Person is empowered to:• Install the EZ-SCREEN Type 2 System• Perform all checkout procedures• Make changes to the internal configuration settings• Reset the System following a Lockout condition5.2 Reset ProceduresSystem resets are performed using an external reset switch. This switch must be located outside the guarded area, andmust not be within reach from within the guarded area (see Reset Switch Location on page 15). Its location should providea clear view of the entire safeguarded area. If any hazardous areas are not in view from the switch location, additionalmeans of safeguarding must be provided. The switch should be protected from accidental or unintended actuation (forexample, through the use of rings or guards).If supervisory control of the reset switch is required, a key switch may be used, with the key kept in the possession of aDesignated or Qualified Person. Using a key switch provides some level of personal control, since the key may be removedfrom the switch. This hinders a reset while the key is under the control of an individual, but must not be relied upon solelyto guard against accidental or unauthorized reset. Spare keys in the possession of others or additional personnel enteringthe safeguarded area unnoticed may create a hazardous situation.5.2.1 Receiver ResetsThe EZ-SCREEN Type 2 receiver has a Reset input, pin 8 (violet wire), that provides for a manual reset input signal.Receiver manual resets are required in the following situations:• Trip Output operation – only after a Lockout (see Troubleshooting and Lockout Conditions on page 40 forcauses).• Latch Output operation – at power-up, after each Latch condition occurs, or after a Lockout.Reset RoutineTo reset the receiver, close the reset switch for 1/4 to 2 seconds, then open it. An alternative method to reset eithercomponent is to power the sensor down, then power it up.NOTE: Closing the reset switch too long will cause the sensor to ignore the reset request; the switchmust be closed from 1/4 seconds to 2 seconds, but no longer.5.2.2 Emitter ResetsIn the rare occurrence that an emitter requires a reset, power the sensor down, then power it up. Emitter resets areneeded only if a Lockout occurs.5.3 Status IndicatorsThe emitter has one LED and the receiver has four, to provide an ongoing indication of light screen and system operation.In normal operation, the status indicators are as described below and as shown in Figure 21 on page 38. Additional LEDcondition combinations indicate errors or faults; refer to Troubleshooting and Lockout Conditions on page 40.EZ-SCREEN® Type 2 Light ScreenPhone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com