9.2.2 Advanced Diagnostics
In addition to the standard error codes, the EZ-SCREEN can display advanced diagnostic codes for factory troubleshooting
and repair functions. These codes are generally not intended for field troubleshooting by the EZ-SCREEN user.
These advanced codes have three digits (alternating “Axx”/“Bxx”, where “xx” are two alpha-numeric characters). To display
these codes:
• Hold the Reset input high (+24 V dc), or
• Hold the Invert Display button down for five seconds during a lockout condition.
If the advanced diagnostic codes are inadvertently displayed, hold the Invert Display button down for 5 seconds to return to
the standard error code display.
9.2.3 Receiver Error Codes
Diagnostic
Display
Error Descriptions and Causes
Appropriate Action
Output Error
This error is caused by:
•
One or both outputs being
shorted to a power supply (high
or low)
•
By shorting OSSD 1 to OSSD 2
•
By an overload (greater than
0.5A)
Disconnect the OSSD loads and reset the receiver.
•
If the error clears, the problem is in the OSSD load(s) or in the load wiring.
•
If the error continues with no load connected, replace the receiver.
Reset Input Error
This error occurs when the Reset switch
is closed (or the wiring is shorted to +24V)
during power-up.
Verify that the reset switch is in the open position.
Reset the receiver per
on page 77.
•
If the error remains, disconnect the reset wire at pin 8; cycle the power.
•
If the error clears, the problem is in the reset switch or in the wiring.
•
If the error persists, replace the receiver.
EDM Input Error
This error can occur for the following
reasons:
•
EDM wiring is incorrect
•
No connection to EDM
connections
•
Both EDM inputs fail to respond
within 250 ms of each other
•
Excessive noise on EDM inputs
•
Loose QD connection(s)
Verify that the EDM wiring is correct for the EDM type configured (see
Control Elements and EDM Input
on page 40).
•
If the error continues, remove power to the guarded machine, disconnect the
OSSD loads, disconnect the EDM input signals, configure EDM for No Monitoring
(see
Machine Primary Control Elements and EDM Input
on page 40), and conduct
the Initial Checkout procedure in
•
If the error clears, the problem is in the external device contacts or wiring, or is a
response-time problem of the external devices. Verify that the EDM wiring is
correct and that the external devices meet the requirements described in
Primary Control Elements and EDM Input
on page 40.
•
If the error continues, check for noise on the EDM inputs (see
on page 80). If the error persists, replace the receiver.
Receiver Error
This error occurs due to excessive
electrical noise or an internal failure.
Reset the receiver per
on page 77.
•
If the error clears, perform a Daily Checkout procedure (per EZ-SCREEN Checkout
Procedures: Shift and Daily Checkout Procedure; Daily Checkout Card). If the
System checks out, resume operation. If the System fails, replace the receiver.
•
If the error continues, check the ground connection (pin 7).
•
If the sensor has a good earth ground connection to pin 7, perform the Initial
Checkout procedure (per
•
If the error clears, check the external connections and configuration settings.
•
If the error persists, replace the receiver.
DIP Switch Error
This error can be caused by incorrect DIP
switch settings or by changes to the DIP
switch settings when the system is ON.
•
Verify that the DIP switch settings are valid. Make any corrections necessary and
perform a receiver reset.
•
If the error occurred due to a change of the DIP switch settings while the System
was in Run mode, verify the switch settings and perform a receiver reset to resume
operation with the new switch settings and modified System configuration.
•
If the error continues, replace the receiver.
EZ-SCREEN
®
14/30 mm Safety Light Screen
78
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