Watlow 12LS Controller - Manual (Page 3)

iii
WARNING
ANAFAZE HAS MADE EFFORTS TO ENSURE THE RELIABILITY AND SAFETY OF
THE 12LS AND PROVIDE RECOMMENDATIONS FOR ITS SAFE USE IN SYSTEMS
APPLICATIONS. PLEASE NOTE THAT IN ANY APPLICATION, FAILURES CAN
OCCUR THAT WILL RESULT IN FULL CONTROL OUTPUTS OR OTHER
OUTPUTS THAT MAY CAUSE DAMAGE OR UNSAFE CONDITIONS IN THE
EQUIPMENT OR PROCESS CONNECTED TO THE ANAFAZE 12LS.
GOOD ENGINEERING PRACTICES, ELECTRICAL CODES, AND INSURANCE
REGULATIONS REQUIRE INDEPENDENT, EXTERNAL, SAFETY DEVICES BE
USED TO PREVENT POTENTIALLY DANGEROUS OR UNSAFE CONDITIONS
ASSUMING THAT THE ANAFAZE 12LS CAN FAIL WITH OUTPUTS FULL ON, OR
OUTPUTS FULL OFF, OR OTHER CONDITIONS THAT WOULD BE UNEXPECTED.
THE 12LS INCLUDES A RESET CIRCUIT THAT WILL SET THE CONTROL
OUTPUTS OFF OR TO THE DATA STORED IN MEMORY IF THE
MICROPROCESSOR RESETS -- NORMALLY THE RESULT OF A POWER FAILURE
AND POWER RETURN. IF THERE IS ANY POSSIBILITY THAT A RESTART
BASED ON MEMORY WILL BE UNSAFE, THE 12LS MUST BE PROGRAMMED TO
START WITH OUTPUTS OFF. FOR ADDITIONAL SAFETY, THE COMPUTER OR
OTHER HOST DEVICE SHOULD BE PROGRAMMED TO AUTOMATICALLY
RELOAD THE DESIRED OPERATING CONSTANTS, OR SAFE VALUES FOR THE
PROCESS, UPON RETURN OF SYSTEM POWER. IN ANY EVENT, THESE SAFETY
FEATURES DO NOT ELIMINATE THE NEED TO PROVIDE EXTERNAL,
INDEPENDENT SAFETY DEVICES IN POTENTIALLY DANGEROUS OR UNSAFE
CONDITIONS.
ANAFAZE ALSO OFFERS ANASOFT, AN OPTIONAL SOFTWARE PROGRAM FOR
IBM PC COMPATIBLE COMPUTERS THAT WILL RELOAD THE 12LS WITH THE
CURRENT VALUES IN THE COMPUTER MEMORY UPON A RESET. THE USER
MUST INSURE THAT THIS WILL BE SAFE FOR THE PROCESS. AGAIN, USING
THIS FEATURE STILL DOES NOT ELIMINATE THE NEED FOR APPROPRIATE
EXTERNAL, INDEPENDENT SAFETY DEVICES.
PLEASE CONTACT ANAFAZE IMMEDIATELY IF THERE ARE ANY QUESTIONS
ABOUT SYSTEM SAFETY