KEYENCE SL-R12EX - Manual (Page 20)

Chapter 2 Functions
2-4
2
English ENGLISH
The muting function supported by the SL-C Series can be classified into two types.
I) A muting function where the safety functions of all beam axes, including those on SL-C Series units
connected in series, are disabled when the signals from the muting devices are ON (active).
II) A muting function (called as the programmable muting function) where the safety functions of pre-defined
beam axes are disabled when the signals from the muting devices are ON (active).
For all beam axes for which either of the functions described in I and II is enabled, the FSD keeps ON-state
even when those beam axes are blocked by the detection capability.
Both of the functions described in I and II above support either 2 or 4 input signals from the muting devices,
comprising the 4 types of muting function described below.
Examples of 2-input muting
See the pages starting with “2-5-2 Two-input muting” ( ➮2-8) for detailed time charts of this function.
1. Using 2 retro-reflective photoelectric sensors (Keyence model PZ-M61, etc.) as muting devices
Sensor A2
Sensor A1
SL-C Series
Reflector
Reflector
Safe zone Hazardous zone
Workpiece
Sensor A2
Sensor A1 Sensor A1
SL-C Series
Reflector
Reflector
Workpiece
Safe zone Hazardous zone
Sensor A2 SL-C Series
Reflector
Reflector
Workpiece
Safe zone Hazardous zone
(1) (2) (3)
(1) (2) (3)
Sensor A1 OFF ON OFF
Sensor A2 OFF ON OFF
SL-C Series state
Safety functions enabled Safety functions disabled Safety functions enabled
(Normal operation) (Muting function enabled) (Normal operation)
* In the example described above, 2 muting devices are installed so that the location where their beam
axes intersect falls within the hazardous zone. This prevents the muting function from being active even if
a person inadvertently passes the point where the beams intersect.