KEYENCE SL-R12EX - Manual (Page 30)

Chapter 2 Functions
2-14
2
English ENGLISH
2-5-5 Four-input programmable muting function
Only preset beam axes can be in a muting state if the memory bank switching input turns ON while the
signals from the muting devices are ON. The FSD keeps ON-state even if the muted beam axes are blocked.
On the other hand, the FSD turns OFF-state if beam axes other than the muted ones are blocked, since
those beam axes keep normal operation.
The information about the preset beam axes for muting is stored in 3 memory banks, and you can switch
among these banks using inputs from the external sources. Although the following time chart shows only 1
bank switching input signal in order for customer’s easy understanding for this function, actually 2 (double)
signals are required for 1 bank switching input (Duplication). See “4-5-5 Bank switching input devices” (
➮4-
17) for more information.
The following time chart shows programmable muting bank function performance when 4 sensors are used
as muting devices.
Forward direction
ON
OFF
Clear
Blocked
ON
OFF
Sensor A1
Sensor A2
Sensor B1
Sensor B2
Bank switching inputs
Muting function
Muting lamp
Beam reception
FSD
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Less than 3 sec.
Less than 3 sec.
20 ms 5 ms
20 ms
24 ms
150 ms
(1) (2) (3) (4) (5)
Time chart explanation
(1) The muting function does not get active when both sensors A1 and A2 are OFF, or when only one of them
is ON. In other words, the light curtain (SL-C Series) keeps normal operation. (The muting function is
OFF.)
(2) The muting function is enabled once the signal from sensor A1 turns ON at first and the signal from
sensor A2 turns ON sequentially. At this time, the muting lamp turns ON. If any one of the 3 bank switch-
ing inputs has already been ON, the preset beam axes in the bank go to the muting state. Even if muted
beam axes are blocked, the FSD keeps ON-state.
If 2 or more bank switching inputs have already been ON prior to the inputs from 2 muting devices, the all
preset beam axes in these banks go to the muting state.
(3) The signal from sensor B1 turns ON, and then, the signal from sensor B2 should turn ON. As long as the
SL-R12EX detects the signals from the muting devices in this sequence, it keeps the muting function as
in (2) above.