KEYENCE SL-R11 - Manual (Page 13)

Chapter 2 Functions
2-1
2
ENGLISH
2 Functions
2-1 Start Interlock
This function keeps the FSD turned off when the power to the SL-R11 is turned on. At this time, the FSD will
not turn on even when the SL-C Series connected to the SL-R11 is clear of any obstruction in the detection
zone. In order to cancel the start interlock status (in other words, to turn the FSD ON to allow the machine to
start), the start/restart input must be input when there are no obstacles in the detection zone. This will cause
the FSD to turn on, allowing the cancellation of the start interlock status.
Using this function prevents the machine from being automatically started when the power is turned on, or
when the start switch, etc., is pressed after safety has been confirmed.
➮ For details, See page 4-4 “4-3-1 Wiring to Start/Restart Input Terminals”.
2-2 Restart Interlock
The FSD turns off when an obstacle interrupts the detection zone, and this function keeps the FSD turned off
even after the obstacle is removed from the detection zone. In order to cancel the restart interlock status (in
other words, to turn the FSD ON to allow the machine to restart), the start/restart input must be input when
there are no obstacles in the detection zone. This will cause the FSD to turn on, allowing the cancellation of
the restart interlock status.
This function prevents the machine from automatically starting even when the obstacle detected by the SL-C
Series is removed from the detection zone, so after the safety check is completed, the machine can be
restarted by pressing the start switch, etc.
➮ For details, See page 4-4 “4-3-1 Wiring to Start/Restart Input Terminals”.
Start/restart input timing chart
ON
OFF
ON
OFF
Start/restart input
FSD
35ms Max.
2-3 E-STOP Input
E-STOP input refers to 2 normally closed signal inputs that are used to rapidly stop the machine when the
emergency stop switch or similar button is operated. The SL-R11 has a terminal (E-STOP1 and E-STOP2
input terminals) for receiving the input signal from the emergency stop switch (or similar button) operation, so
the machine can be emergency stopped via the SL-R11. SL-R11 requires the start/restart input in order to
return to the normal operation from an emergency stop state. That is why the SL-R11 requires the start/
restart input to cancel the interlock state in addition to the manual restart of E-STOP signal input.
This function not only makes emergency stopping possible when danger is detected by the SL-C, but can
also cause the FSD provided in the SL-R11 to be operated by E-STOP input from an emergency stop switch,
etc., so it can be used to make output systems uniform.
➮ For details, See page 4-5 “4-3-2 Wiring to E-STOP Input Terminals”.
E-STOP input
ON
FSD
ON
OFF
OFF
20ms Max. 35ms Max.
Start/restart input
E-STOP input