Rockwell Automation Publication 440G-IN016A-EN-P - October 2017
5
TLSZR/L-GD2 Guard Locking Switch
“Multi-time” Learn Process
Learning the First “Multi-time” Target
• Connect the switch to 24V DC (see
Wiring Diagrams on page 8
).
The Status/Diagnostic light-emitting diode blinks the number of
times a new target can be learned (eight times when new). Then
repeats, which indicates that the switch has not yet learned a target.
• The switch automatically starts the learning process as soon as a
target and actuator are placed into the door-closed, locked position
of the switch
The learning sequence as indicated by Status/Diagnostic light-emitting
diode:
Learning Additional New “Multi-time” Targets
Mount the new target to the door and repeat the previous process,
introduce the target and actuator to the switch as described. While
finalizing the program, the light-emitting diode blinks Green indicating
the number of learns remaining.
“One-time” Learn Process
• Proceed as the “Multi-time” learn process indicates except that at the
programs completion stage withdraw the target and actuator from
the switch until the light-emitting diode turns to solid Red. Then
replace the target and actuator back to the switch. This action must
be completed within 15 s.
• The light-emitting diode blinks and then turns solid to indicate that
learn is complete:
TLSZR: Solid green
TLSZL: Solid red
For operating Status/Diagnostic light-emitting diode codes, see
Status/
Diagnostic LED Indicator on page 4
.
Functional Testing
A manual functional electric test must be made:
• After installation
• After any maintenance or change of component
• If the guard is used infrequently
– Less than once per month for SIL 3/PLe
– Less than once per year for SIL 2/PLd
1. Confirm guard door is open.
2. Connect the 24V DC power to pin 2. The switch conducts a
self-testing regime at the end of which the diagnostic light-
emitting diode shows solid red.
3. Test to confirm the machine cannot start.
4. Confirm the lock control at pin 3 is set to 0V for PTR and 24V
for PTL types.
5. Test again to confirm the machine cannot start.
6. Close the guard door and then confirm the guard is
mechanically locked and the diagnostic light-emitting diode
shows solid green.
7. Test to confirm the machine can now start.
8. Change the lock control at pin 3…24V for PTR and 0V for
PTL types.
9. Confirm the machine stops, the guard door is mechanically
unlocked, and the machine cannot restart.
IMPORTANT
Leave the target/actuator in the door-closed position during
the learning process. If they are removed during the learning
process, the ability to learn an additional target is disabled.
• Target present:
Blinking Green, 1 Hz rate
• Verifying target:
Blinking Green/Red, 1 Hz rate (15 s)
• Programming switch:
Blinking Green/Red, 4 Hz rate (15 s)
• Programming finalizing:
Blinking Green (number of learns left,
15 sec)
• Verifying target:
Blinking Green/Red, 1 Hz rate (15 s)
• Ready state (learn is
completed):
Solid Green (TLSZR), Solid Red
(TLSZL)
IMPORTANT
For power-to-unlock switches, to be able to withdraw the
target and actuator away from the switch as described it is
necessary to execute a manual release.
Status/Diagnostic LED Error Codes during the Learn Process
These code sequences persist until the power off-on cycle is undertaken.
Status/Diagnostic LED - Flashes (4 Hz)
Error Code
Red-Red-Red-Green-Green
Target already learned
Red-Red-Red-Green-Green-Green
Bad RFID; target that is moved out of range
Red-Red-Red-Green-Green-Green-Green
Exceeded learning eight targets
Red-Red-Red-Green-Green-Green-Green-
Green
Unit is locked to One-time learn; cannot learn
another target
ATTENTION:
During the functional test, confirm that there are no
persons in the danger area and that the machine startup causes no
hazard.
