KEYENCE SL-R12EX - Manual (Page 28)

Chapter 2 Functions
2-12
2
English ENGLISH
2-5-4 Two-input programmable muting function
Only the preset beam axes are muted if the memory bank switching input turns ON while the signals from
muting devices are ON. The FSD keeps ON-state even if the muted beam axes are blocked. On the other
hand, the FSD turns to the 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 those banks using inputs from an external source. Although the following time chart shows only 1
bank switching input signal in order for the customer’s easy understanding of this function, actually 2 (dou-
ble) 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 2 sensors are used
as muting devices.
ON
OFF
Clear
Blocked
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Sensor A1
Sensor A2
Bank switching inputs
Muting function
Muting lamp
Beam reception
FSD
(1) (2) (3)
Less than 3 sec.
20 ms 20 ms
5 ms
150 ms
24 ms
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 lamp turns ON when both sensors A1 and A2 turn ON. At this time, if any one of the 3 bank
switching 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, then
all preset beam axes in these banks go to the muting state.
(3) If all of the bank switching inputs turn OFF when both sensors A1 and A2 keep ON, the muting function is
canceled, and the light curtain (SL-C Series) returns to normal operation. At this time, the muting lamp
does not turn OFF. (The muting lamp turns OFF when at least either sensors A1 or A2 turns OFF.)