SafeShield Safety Light Curtain Hardware User Manual
33
The system state lock-out
In case of certain faults or an erroneous configuration, the system
can go into the lock-out status. The 7-segment display on the safety
light curtain then indicates , , , , or . To place the
device back in operation:
➢ Rectify the cause of the fault as per Table 21.
➢ Switch the power supply for the SafeShield safety light curtain off
and on again (e.g. by unplugging the system plug and reinserting
it).
Allen-Bradley Guardmaster Support
If you cannot remedy an error with the help of the information
provided in this chapter, please contact Rockwell Automation
technical support.
Error Displays of the Diagnostics LEDs
This section explains the meaning of the error displays of the LEDs
and how to respond. Please refer to the description in “Status
Indicators” on page 9.
Table 20: Error displays of the LEDs
Display
Possible
Cause Remedying the Error
● Orange
LED of
receiver lights
up
Weak signal
➢ Check the alignment of
sender and receiver.
➢ Check the front screen
(dirt) and clean, if
necessary.
✺ Yellow
LED of
receiver flashes
Reset required
➢ Press the reset button.
❍ Yellow
LED of sender
fails to light up
No operating
voltage, or
voltage too low
➢ Check the voltage
supply and activate, if
necessary.
❍ Red and
❍ Green
Neither the
red nor the
green receiver
LED lights up
Error Displays of the 7-Segment Display
This section explains the meaning of the error displays of the 7-
segment display and how to respond to the messages. Please refer
to the “Status Indicators” section on page 9.
Table 21: Error displays of the 7-segment display
Display Possible Cause Remedying the Error
Inadequate
alignment
➢ Re-align sender and receiver (see page
30). The display goes off after
2 minutes.
Configuration
incomplete
➢ The display goes off automatically once
the configuration has been successfully
transferred.
If display 6 does not go off:
➢ Check the configuration of the system
using the SCD software.
➢ Re-transfer the corrected configuration
to the system.
or
EDM error
➢ Check the contactors and their wiring,
eliminate any wiring errors, if necessary.
➢ If ( is displayed, switch the device off
and back on again.
Reset button fault
➢ Check the reset button for correct
function. The button may be defective
or stuck.
➢ Check the wiring of the reset button/
for any short-circuit to 24V.
Configuration of
the SafeShield
function module
➢ Configure the switching amplifier
connected with the aid of the SCD.
➢ Check the connection from the
SafeShield safety light curtain to the
function module.
Several operating
modes configured,
but none selected
➢ Check the connection and the function
of the operating mode selector switch.
➢ Check the connection for the operating
mode selector switch on the function
module.
Several operating
modes selected
simultaneously
➢ Check the connection and the function
of the operating mode selector switch.
➢ Check the connection for the operating
mode selector switch on the function
module for a short-circuit.
Unconfigured
operating mode
selected
➢ Configure the operating mode set on
the operating mode selector switch, or
ensure that this operating mode cannot
be selected.
Key-operated
pushbutton for
bypass is
malfunctioning or
invalid
configuration
➢ Check whether the configuration of the
key-operated pushbutton for bypass in
the SCD matches the electrical
connection.
➢ Check the function of the key-operated
pushbutton for bypass and replace it if
necessary.
➢ Ensure that both contacts on the key-
operated pushbutton for bypass are
pressed within 2 seconds.
Short-circuit at
the operating
mode selector
switch
➢ Check the operating mode inputs on
the switching amplifier connected for
short-circuit to 24V.
System error
➢ Disconnect the supply voltage to the
SafeShield safety light curtain for at least
3seconds.
➢ If the problem persists, then have the
unit (sender or receiver) replaced.
,,
or
