Watlow CAS - Manual (Page 9)

CAS User’s Guide vii
Safety
Watlow Anafaze has made efforts to ensure the reliability and safety of
the CAS and to recommend safe uses in systems applications. Note that
in any application failures can occur.
Good engineering practices, electrical codes, and insurance regulations
require that you use independent external safety devices to prevent
potentially dangerous or unsafe conditions. Assume that the CAS can
fail or that other unexpected conditions can occur.
Install high or low temperature protection in systems where an
overtemperature or undertemperature fault condition could present a fire
hazard or other hazard. Failure to install temperature control protection
where a potential hazard exists could result in damage to equipment and
property, and injury to personnel.
For additional process safety, program a computer or other host device
to automatically reload your desired operating parameters after a power
failure. However, this safety feature does not eliminate the need for
other external, independent safety devices in dangerous conditions.
WARNING
The CAS should never be used as a safety shutdown device. It
should only be used with other approved independent safety
shutdown devices.
Watlow Anafaze also offers ANASCAN®, an optional software
program for IBM-compatible computers. In the event of a controller
reset, ANASCAN will reload the CAS with the current values in
computer memory. The user must ensure that this reset will be safe for
the process. Again, use of ANASCAN does not eliminate the need for
appropriate external, independent safety devices.
Contact Watlow Anafaze immediately if you have any questions about
system safety or system operation.