SMARTSCAN 053B101, Руководство по установке, Страница: 14 / 49

T4 (053B) Series Installation Guide
CD354/220116 Smartscan Ltd 10
Reset
The T4 (053B) series provides a manual (latched) reset for applications where it is
a requirement that the safety outputs cannot be reinstated without the operator
first checking that the dangerous area is clear of personnel and therefore safe.
The reset switch must also be located so that the operator cannot reset the safety
light curtain from inside the danger area.
The reset switch must be a Normally Open spring-return contact block, either
push button or key switch depending on the application risk assessment. The
Green wire on the Receiver (RX) head cable needs to be connected to one side of
the Normally Open contact block and the other side to 24V DC (L+). The safety
light curtain will only reset on the trailing edge of the switch.
However for the Automatic reset function the Green wire is no longer required and
must be terminated to an individual isolated terminal block.
The Automatic and Restart Interlock options are selected via DIP switches, refer
to the DIP switch setting guide later in this manual.
External Device Monitoring (EDM)
An External Device Monitoring input facility is provided for monitoring the
customers’ external Final Switching Devices (FSD) to ensure those devices
respond in unison with the safety outputs each and every time the light curtain is
interrupted. Failure of the external Final Switching Device (FSD) during
monitoring will not allow the safety light curtain’s output OSSDs to reset.
The EDM Yellow wire on the Receiver (RX) head should be connected via a
normally closed (NC) contact of the external final switching device being
monitored. The other side of the contact is connected to 24V DC.
If the EDM is not being used the Yellow wire must be connected to a permanent
24V DC (L+).
A LED indicator located at the top of the Receiver (RX) head labelled as EDM
shows the EDM status.
Yellow LED ON = EDM ON Yellow LED OFF = EDM OFF
Note: Prior to initial power up of the light curtain check the following.
If the Smartscan system is connected directly to a 24V DC source
supplied by the user, it must be emphasised that the supply should be
regulated and suppressed to prevent transient voltages and other forms
of electrical interference from affecting correct operation of the Smartscan
equipment. Ensure the 24V DC source supplied by the user has
sufficient current load to satisfy the safety light curtain current
consumption requirement, taking into account any other devices already
connected to the PSU.