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Rockwell Automation Publication 440L-IN012A-EN-P - November 2017
GuardShield Type 4 and GuardShield Remote Teach
System Delivery
The GuardShield Remote Teach light curtain system is delivered with
the GuardShield light curtain transmitter and receiver that is already
configured in the standard GuardShield light curtain operating mode of
“Guard Only.” This mode is Automatic reset and all features not
activated.
The 2 m (6.56 ft) patchcord (889D-F4ACDM-2), Remote Teach
(440L-M8600) key selector switch box and mounting hardware are
packaged with each GuardShield Remote Teach light curtain system
) along with a standard GuardShield light
curtain transmitter and remote teach receiver.
Remote Teach Box
—
Key Switch Positions
The GuardShield remote teach light curtain box uses a Rockwell
Automation® 800FM series, three-position IP66 rated spring-loaded key
selector switch. There are three key selector switch positions on the
GuardShield Remote Teach light curtain box.
• RUN: This key selector switch position is required for the
GuardShield light curtain to operate in its normal operating
mode.
• CONFIGURE: This key selector switch position simulates the
opening of the GuardShield light curtain DIP switch door. This
position sends a signal to the GuardShield light curtain
firmware to change from the RUN mode of operation to a
configuration mode of operation. In this mode, all outputs are
in the OFF state.
• TEACH: This key selector switch position performs the
function of changing the operating mode configuration of the
GuardShield light curtain.
Figure 61 - Key Selector Switch Label Positions
System Installation
The GuardShield light curtain transmitter and receiver are properly
mounted to the machinery to be guarded per the GuardShield Light
Curtain Installation Instructions.
After aligning the GuardShield safety light curtains and attaining a
“green” state, the safety light curtain is transmitting infrared light and
the receiver OSSDs are high. It is now possible to reconfigure the
GuardShield light curtain.
Use the T8 TORX® bit supplied with each GuardShield light curtain
bracket kit to open the GuardShield light curtain Receiver door and set
DIP switch four to the ON position. This DIP switch allows the
activation and configuration of a monitored fixed blanked area within
the GuardShield light curtain protective height.
Make any additional DIP switch settings now.
Remote Teach Procedure
1. Position object in the GuardShield light curtain sensing field,
confirm that the synchronization beam is not obstructed
2. Turn key selector switch to the configure position. The red
status indicator on the receiver flashes and the yellow blanking
status indicator is illuminated.
3. Turn and hold key selector switch in the Teach position
4. The GuardShield light curtain receiver yellow blanking status
indicator begins to flash.
5. When the yellow blanking status indicator stops flashing,
release the key selector switch to the configure position within
two seconds.
6. The GuardShield light curtain receiver yellow blanking status
indicator flashes three times to confirm that the new fixed
blanking configuration has been set.
7. Turn the key selector switch to the RUN position, the green
status indicator on the GuardShield light curtain receiver
illuminates.
8. Use the supplied test rod to confirm the fixed blanking area and
any other settings are configured as expected.
It is possible to configure and activate both fixed and one or two beam
floating blanking on the GuardShield light curtain.
IMPORTANT
If EDM or Reset functions are to be configured through DIP
switch settings, assure that the proper receiver wire
connections are made.
It is not possible to blank out the synch beam, which is the
first beam adjacent to the GuardShield light curtain
diagnostic status indicators.
If the transmitter configuration needs to be changed from the
factory settings, set the DIP switches in the transmitter and
follow the standard teach process.
IMPORTANT
Once the GuardShield light curtain is configured by changing
factory DIP switch positions and performing the Teach
function (see
Teach-in Procedure Function on page 18
), the
GuardShield light curtain will be reconfigured. Any future
Teach procedure will only change the configuration of the
fixed blanking area.
After teaching the GuardShield light curtain a new
configuration, confirm that the configuration that was
expected to be configured has actually been configured.
Fixed blanking creates a “hole” in the detection area of the
GuardShield light curtain. It is necessary to assure that access
to the hazard being protected against is prevented by means
of barrier guarding. It should not be possible to access the
hazard through the fixed blanked area.
