User Manual

SAFETY
Safety handbook page - 40 -
PNSPO
The mute sequence of the Omron F3SP-U_P-TGR control units is composed of two
mute signals within bond times. The picture 3 illustrates graphically this concept: the
delay between the second and the first mute signal, respectively B and A, must not
exceed 3 seconds. Moreover, cause of the response time of the control unit, the delay
between A and B can’t be lower than 30ms.
Mute signals timing chart
The duration of the mute state has a limit of 60 seconds, as requested by the norm.
However, this default setting can be changed to infinite.
The mute sensors are physically positioned so that any person trying to gain access
cannot activate the mute sensors in sequence and permanently. Therefore, the mute
sequence will not be activated causing the machine to stop as the light curtain is
broken.
The muting function is generally managed with an external control device, as seen in
the previous figure. Omron mute control units comes in two different versions:
- F3SP-U1P-TGR for single beam type sensors E3FS,
- F3SP-U2P-TGR for multi-beams type sensors, like F3SB and F3SN/H-A.
The F3SP-U1P-TGR is necessary for the management of the diagnostic of the E3FS
safety sensor. Is possible to link 1 to 4 pairs of sensor.
The F3SP-U2P-TGR complete a type 2 (F3SB) or type 4 (F3SN/H-A) ESPE with the
muting function.
Both control units are supplied with two muting function. Each function is independent
and activated with dedicated inputs (A-B and C-D) for the mute sensors.
Following picture illustrate an application where a component go through a dangerous
zone where the input and the output of this zone are monitored by two pairs of E3FS
(S1-S2 and S3-S4) and four pairs of mute sensors for each couple of safety sensors.