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
Emitter
Display
LED Status
Possible Cause and Appropriate
Action
Power/Fault
Green
flashing
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/Fault
Green OFF
Power Supply Failure - Check the power supply.
Table 3: Receiver
Troubleshooting
Receiver
Display
LED Status
Possible Cause and Appropriate
Action
Alignment Top
Alignment
Bottom
Status Blocked
Status Clear
Yellow
flashing
Yellow
flashing
Red
flashing
Green OFF
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
μ
F, contact
Factory.
•
Open Reset/Test for at least 0.25 seconds and close.
If the
condition
continues,
contact Factory.
EZ-SCREEN
®
Type 2 Light Screen
38
www.bannerengineering.com - Tel: 763.544.3164
