SG4E Full Rev01.pdf - Datasensor

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SG4-E INSTRUCTION MANUAL
7.7.1 Muting function disable
During SG4-E operations muting function can be dynamically disabled or enabled: when
disabled no valid muting request will be accepted at the MUTINGX inputs and safety function
will always be on.
The user can disable the muting function at runtime by setting a high level on the signal
MUTING DISABLE (pin 7 of the M12-12 poles connector).
7.7.2 Muting signalling devices
In order to make use of Muting function, it is compulsory to connect a dedicated signalling
device (lamp); without it the light curtain goes in failure lock-out state.
Both incandescent and LED lamps are allowed. In case of use of LED lamp, take care to
connect it respecting the right polarity .
A Lamp TEST is executed cyclically when the lamp is lighted on in order to guarantee the
detection of lack of functionality. If a lamp break is detected, ESPE goes in Lamp Failure
Lock-Out state and shows the related message on the display (refer to chapter 11 for
informations about the lamp).
7.7.3 Typical muting application and sensor connection
Safety Sensor
A22
A21
A12
A11
Fig. 40 – Typical Muting Application
The figure above shows a typical muting application: a protection installed on a conveyor
should allow the pack passing-by but not the worker. The ESPE temporarily suspends its
safety function on a correct activation sequence of A11, A21, A12, A22 sensors.
These sensors can be optical, mechanical, proximity sensors … etc., with high output PNP
when the object is detected.
7.7.4 Muting direction
The ESPE can be used with both bidirectional (T type, four sensors) and monodirectional (L
type, two sensors) muting.
Bidirectional muting can be used in those applications in which the packs can move in both
directions and monodirectional muting can be used in those applications in which the packs
move in one direction only.
In BCM the maximum activation delay between MUTING1 and MUTING2 (T12max) is 4 sec.
40