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4 FUNCTIONS
4.4 Muting Function
4.4 Muting Function
This function temporarily disables the protection function of a safety device while a conveyance pallet passes through the
detection area of electro-sensitive protective equipment (ESPE).
This means that material can be transported to or from a machine or system without any disruption to the working process.
Muting sensors monitor the existence of materials being transported. Depending on the type and installation position of the
sensors, an object and a person can be distinguished.
By using the function and muting sensors, the device stops operation only when a person is detected in a hazardous area.
When non-human objects are detected, the system continues operation.
Setting method
Apply the program 3.1 or program 3.2 by setting the FUNCTION rotary switch of an FX5-SF-MU4T5 to '3'.
Connect muting sensors to I2 and I3 of an FX5-SF-MU4T5.
Connect a muting lamp to Q2 of an FX5-SF-MU4T5.
For details of the installation method of muting sensors, refer to the following:
Page 106 Installation of Muting Sensors
For wiring muting sensors with a safety extension module, refer to the following section or MELSEC iQ-F Series Safety
Extension Module Configuration Guide.
Page 95 External Wiring Example
Operation
The following shows an operation example for performing the muting function by connecting two muting sensors.
The operation is as follows.
: A material moves from left to right on the conveyance equipment (conveyor belt).
: As soon as the material is detected by the muting sensors A1 and A2, ESPE is temporarily disabled so that the material
can enter the hazardous area.
: When the material is not detected by the muting sensors A1 and A2, ESPE will be enabled again.
Sensors and input signals available for the muting sensors A1 and A2 are as follows:
• Optical sensors
• Inductive sensors
• Mechanical switches
(1): Conveyance equipment
(2): Material
(3): Hazardous area
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