18
Rockwell Automation Publication 440L-IN012A-EN-P - November 2017
GuardShield Type 4 and GuardShield Remote Teach
system. The following Operating modes if configured cause the light
curtain to fault;
• EDM
• Start and restart interlock
Power must be cycled and the segment pair must be retaught to
deactivate the mode.
Table 40 - Teach-in Procedure Function
The doors on the transmitter and receiver must be closed for the
GuardShield light curtain to operate.
Troubleshooting Guide
The light curtain conducts an internal self-test after startup. If an error
occurs, an appropriate signal combination is sent through the status
indicators to the transmitter and receiver.
Table 41 - Error Descriptions
Figure 42 - Status Indicator at Transmitter (Tx) and Receiver (Rx)
Table 43 - System Status Indicators
IMPORTANT
Configuration of the EDM in a middle or end segment causes
an EDM fault in that configured segment even if EDM is also
configured and functions in the Host segment. Interruption of
the middle or end segment, which has EDM also configured,
causes the middle or end segment to go to a lock out
condition. That condition cannot be reset without cycling
power and reconfiguring the middle or end segment without
the non-allowed configuration.
Configure the start or restart interlock in the middle or end
segment causes a fault in the middle or end segment, which
has that Operating mode configured. The status indicator
shows a “Waiting for reset” fault, which cannot be reset even
if the Host segment is also configured for the start or restart
interlock. Due to the lack of an internal reset line in the
middle or end segment, it is not possible to reset the middle
or end segment before resetting the Host segment.
Step 1
Open the cover of the end cap
Receiver: red status indicator flashes (OSSD OFF)
Transmitter: orange status indicator flashes (POWER ON). See
Step 2
Select the desired DIP switch setting.
Step 3
Press and hold the Teach button. The yellow status indicator starts flashing at
10 Hz (10x per second):
RX: Blanking indicator
TX: Emitting indicator
Step 4
After five seconds, the status indicator stops flashing. After the indicator stops
flashing, release the teach button within two seconds. After three flashes of the
yellow status indicator, the function is activated.
Step 5
Close and secure the cover. The indicator stops flashing.
IMPORTANT
If the GuardShield light curtain teach procedure is not
properly completed, the unit remains in the previous
operating mode.
Once the teach function is completed and the door that is
secured, verify that the operating mode has changed to the
intended mode.
Condition No.
Error Description
Action
8
Internal fault, receiver
• Check configuration of transmitter
and receiver
• Replace receiver
9
Internal fault, transmitter
• Check configuration of transmitter
and receiver
• Check protective field transmitter/
receiver
• Check connections transmitter/
receiver
• Exchange transmitter
10
External fault
• Check connections of OSSD outputs
for short circuit a24V DC and
GND (cable, connected devices)
• Exchange receiver
11
External fault (MPCE/EDM error)
The function
Relay monitoring
is activated and after clearing
the OSSD the input Relay
monitoring does not recognize a
change of state.
• Check connection Relay monitoring
• Check connected relay for closed
contact (if OSSD ON—input Relay
monitoring must have GND level, if
OSSD OFF—input Relay monitoring
must have +24V)
• Switch on only after POWER OFF/ON
12
Configuration mode (Receiver)
• Cover for DIP switch setting at the
receiver is open
13
Configuration mode
(Transmitter)
• Cover for DIP switch setting at
transmitter is open
Receiver
Transmitter
OSSDs OFF
Blanking
Emitting
OSSDs ON
Interlock
Alignment
POWER ON
Condition No.
Receiver Status Indicators
Transmitter Status Indicators
OSSDs
OFF
Red
OSSDs
ON
Green
Blanking
Yellow
Alignment
Amber
Interlock
Yellow
Power
On
Amber
Emitting
Yellow
1
OFF
ON
OFF
OFF
OFF
ON
ON
2
ON
OFF
OFF
OFF
OFF
ON
ON
