Type 2 muting interface
FF-SLM Series
For personnel/material discrimination in dangerous zones
FEATURES
• Muting interface with safeguarding
function based on a cyclic performance
test
• Approved as a Type 2 safety control unit
per IEC/EN 61496-1 when used with a
U
light curtain from the FF-SLC range
(FF-SLC35, FF-SLC55 or FF-SLC18)
®
L
C
US LISTED
• Replaces the FF-SLU100R2 control unit
• Input: 3 muting sensors: 2 start muting,
1 end muting (optional)
• Output: 2 safety relays with guided
contacts (2A/125 Vac)
The FF-SLM200R2 muting interface is a module designed to work with the light
curtains from the FF-SLC range. It replaces the FF-SLU100R2 as the system’s con-
trol unit to build a Type 2 electrosensitive protective equipment (ESPE) in compli-
ance with the International standard IEC/EN 61496-1. When combined with an
FF-SLC light curtain and connected to specific muting sensors that complete the
system for this type of application, the FF-SLM200R2 control unit provides an
efficient solution to the problem of personnel/material discrimination at dangerous
access points characterised by transit of pallets.
• Response time 0.015 sec
• Supply voltage 24 Vdc
APPLICATIONS
• Automatic palletizing / depalletizing
systems
• Material handling and storage systems
• Packaging and wrapping machines
• Assembly lines
The FF-SLM200R2 control unit checks safe functioning of the sensing device by
sending a test signal and assessing its response time. Correct functioning of exter-
nal auxiliary relays or contactors is also checked at each test cycle, with permanent
automatic monitoring of the muting and override function circuits. Control unit sta-
tus is provided continuously through LEDs while the self-diagnostic output permits
remote management of information regarding correct functioning of the device.
According to safety regulations, the muting function can be activated only if two
signals are present. Muting sensors are therefore required, which provide the con-
trol unit with information (muting signals) regarding transit of the material
“authorised” to access the dangerous zone. The FF-SLM200R2 control unit
manages the muting function using 2 or 3 inputs to which sensors with relay
output or sensors with PNP static type output can be connected. In particular,
switching must be of the DARK ON type.
The control unit activates and de-activates the muting function only with the cor-
rect muting sequence, characterised by a specific signal timing, at its inputs. To
activate the muting function, the material that passes through the dangerous ac-
cess point must be detected by both sensor 1 or sensor 2 (within four seconds).
During the period in which the function is active, the FF-SLM200R2 control unit is
in muting status, indicated externally by a white indicator light located close to the
dangerous zone and which is permanently checked by the unit.
An end-muting sensor (sensor 3) can be used to check the distance between two
consecutive pallets.
If the machine stops with the material in the area controlled by the light curtain, a
manual operation is required to restart the system: the override function. This func-
tion, which sets the control unit to override status, must be carried out through
simultaneous activation of two manual controls.
!
WARNING
MISUSE OF DOCUMENTATION
•
The information presented in this product sheet (or catalogue) is for reference only. DO NOT USE this document as system
installation information.
•
Complete installation, operation and maintenance information is provided in the instructions suplied with each product.
Failure to comply with these instructions could result in death or serious injury.
FF-SLM Series
• Industrial Safety Products •
275
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