KEYENCE SL-R12EX - Manual (Page 32)

Chapter 2 Functions
2-16
2
English ENGLISH
Important: * In the event that the signals from the muting devices turn ON or OFF in a different sequence
from what is indicated in the previous 2 time charts (for either the forward and reverse
directions) – the light curtain (SL-C Series) goes to the lockout condition, and the FSD turns
OFF-state. For example, a signal input from sensor A1 is followed by a signal input from
sensor B1, etc.
* One of the bank switching inputs must be ON prior to the signal input from the second
muting device. (For the forward direction sequence, input from sensor A2; for the reverse
direction sequence, input from sensor B1). Therefore, in order to switch among the 3 banks,
you must switch the bank switching input when the SL-R12EX receives no signals from the
muting devices, or when it only receives the signal from the first muting device. (For the
forward direction sequence, input from sensor A1; for the reverse direction sequence, input
from sensor B2).
* The SL-C Series muting function is designed so that it cannot be active while FSD is OFF-
state. As a result, the SL-C Series does not go to the muting state when any beam axes are
being blocked or when the restart interlock is enabled, even if the signals from the 4 muting
devices turn ON in the correct sequence indicated above.
* If there is no bank switching input to the SL-R12EX while the signals from the muting devices
are ON, the programmable muting bank function does not get active and the light curtain
(SL-C Series) keeps normal operation. However, the muting lamp turns ON if there is signal
input from the muting devices.
* If additional bank switching input is made while a muted beam axis is blocked, the FSD turns
OFF-state.
* Bank switching input requires 2 (double) channels of signal input. As a result, if 1 of the
channels is ON while the other is OFF, the light curtain (SL-C Series) goes to the lockout
condition.
* When the SL-R11 receives an E-STOP input signal, the FSD always turns OFF-state and
the light curtain (SL-C Series) automatically goes to the restart interlock state, even if it has
been in muting state. When the E-STOP input signal is canceled and the restart input turns
ON, the light curtain (SL-C Series) returns to normal operation, rather than resuming the set
muting state. As a result, in order to return the light curtain (SL-C Series) to the muting state
again, you must temporarily cancel the signal input from the muting devices that have been
activated and resend the input signals from them to SL-R12EX.
**In the event that a change of the signal from one of the muting devices (ON or OFF) is not
followed by a change of the signal from the next muting device in less than 5 minutes, the
light curtain (SL-C Series) goes to the lockout condition, and the FSD turns OFF-state. (See
the below time chart for reference.)
Example
Sensor A1
Sensor A2
Sensor B1
Sensor B2
Muting function
Beam reception
FSD
ON
OFF
Clear
Blocked
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Lockouts
5 min.