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EZ-SCREEN
Type 2 Light Screen
6 Troubleshooting and Maintenance
6.1 Troubleshooting and Lockout Conditions
Evaluate status indicators per
A Lockout condition causes all the EZ-SCREEN Type 2 OSSD outputs to turn or remain OFF, sending a stop signal to the guarded machine.
Each sensor provides diagnostic information, via the LEDs, to assist in the identification of the cause(s) of lockouts. Lockout conditions
are indicated as shown in the Troubleshooting section.
6.2 Recovery Procedures
To recover from a Lockout condition, correct all errors and perform sensor resets as indicated below.
6.2.1 Receiver (System Reset)
Open the Reset switch for 0.25 second and then close it, or (for Trip Output models not using a reset button) power the sensor down,
wait a second or two, then power it up.
6.2.2 Emitter Reset
Power the sensor down, wait a second or two, and then power it up (in the unlikely event that an emitter reset is needed).
WARNING: Lockouts and Power Failures
Power failures and Lockout conditions are indication of a problem and must be investigated immediately by a
Qualified Person. Attempts to continue to operate machinery by bypassing the EZ-SCREEN Type 2 System or other
safeguards is dangerous and could result in an increased risk of harm.
WARNING: Shut Down Machinery Before Servicing
The machinery to which the EZ-SCREEN Type 2 System is connected must not be operating at any time during
major service or maintenance. This may require lockout/tagout procedures (refer to OSHA1910.147, ANSI Z244-1,
ISO 14118, or the appropriate standard for controlling hazardous energy). Servicing the EZ-SCREEN Type 2 while
the hazardous machinery is operational could result in serious bodily injury or death.
Table 2: Emitter Troubleshooting
Display
LED Status
Power/Fault
Green flashing
Power/Fault
Green OFF
Table 3: Receiver Troubleshooting
Display
LED Status
Alignment Top
Yellow flashing
Alignment Bottom
Yellow flashing
Status Blocked
Red flashing
Status Clear
Green OFF
38
Status Indicators
on page 35.
www.bannerengineering.com - Tel: 763.544.3164
Emitter
Possible Cause and Appropriate Action
Emitter Failure
•
Check the power supply for low or erratic voltage, or excessive electrical
noise.
•
Verify the sensor has a good earth ground.
If the condition continues, contact Factory.
Power Supply Failure - Check the power supply.
Receiver
Possible Cause and Appropriate Action
Output Fault
•
Check output connections.
•
Check for a short between OSSD1 and OSSD2 or to a secondary source
of power.
•
When connecting to a capacitive load greater than 0.1 μF, contact
Factory.
•
Open Reset/Test for at least 0.25 seconds and close.
If the condition continues, contact Factory.
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