SMARTSCAN 053B101, Руководство по установке, Страница: 15 / 49

T4 (053B) Series Installation Guide
CD354/220116 Smartscan Ltd 11
Safety Outputs OSSD1 and OSSD2
Two independent (PNP) electronic switching failsafe signal outputs (OSSDs) are
provided for connection to the machine’s stop control circuit. Interruption of the
safety light curtains infrared sensing field (unless muted or blanked) will cause the
OSSDs to go to an OFF state and initiate a machine stop condition. The
connections are provided via the Grey wire (OSSD1) and the Pink wire (OSSD2)
on the Receiver (RX) head cable.
Outputs ON = +24V DC (Light curtain clear)
Outputs OFF = 0V DC (Light curtain blocked)
The electronic outputs are monitored and rated at a maximum switching rating of
24V DC, 500mA.
LED indicators located at the top of the Receiver (RX) head labelled as ON and
OFF show the status of the OSSDs.
If the LO1 LED on the RX head turns on it shows that the light curtain safety
outputs (OSSDs) have gone to a fault condition. This means that the light curtain
is in a lockout condition and will remain in this condition until the power to the light
curtain is re-cycled. The lockout fault is caused by either the OSSD being shorted
or the OSSD has been driven higher than the 500mA maximum specification.
Mute Function
The Mute inputs MU1 (Mute 1) Green (GN) wire and MU2 (Mute 2) Yellow (YE)
wire on the Transmitter (TX) head cable are for connecting external muting
signals to the T4 (053B) series safety light curtain. Both mute input signals are
monitored by the light curtain and must come from separate sources, so that a
single fault cannot cause a failure of the protective function.
When both mute inputs are active ON (connected to 24V DC), the light curtain will
mute (*full mute or **partial mute), e.g. the light curtain’s safety outputs (OSSDs)
will not respond to an interruption of the muted sensing field of the light curtain.
* Full Mute: The entire sensing region of the light curtain will mute (Default).
** Partial / Learn Fixed Mute: A window (specified number of beams) will be
muted but the remainder of the light curtain remains active. To activate the Partial
muting function it must be selected via the appropriate DIP switch settings in the
Learn mode described later in the manual.
LED indicators located at the top of the Transmitter (TX) head labelled as MU1
(Mute 1) and MU2 (Mute 2) show the status.
MU1 - Blue LED ON = Mute 1 ON Blue LED OFF = Mute 1 OFF
MU2 - Blue LED ON = Mute 2 ON Blue LED OFF = Mute 2 OFF
Green LED ON = OSSD1 and OSSD2 active ON
Red LED ON = OSSD1 and OSSD2 inactive OFF