12LS Controller Installation and Operation Manual, Rev 3 ... - Watlow

9.0 GLOSSARY OF TERMSAddressAC Frequency.ControlActionAlarm DelayAlarmsThe ANAFAZE controller address used in computercommunications. Each controller must have aseparate address beginning with 1. The default is1.The frequency of the power line, 60 Hz or 50 HzThe movement of the control relative to the errorbetween the process variable and the setpoint. Forreverse action [heat], as the processdecreases below the setpoint the outputincreases. For direct action [cool], as theprocess increases above the setpoint the outputincreases.The time in minutes that alarm functions aredelayed when the controller is started (initialpowerup).Four alarms are available for each loop. A HighProcess and a Low Process Alarm with HighDeviation and a Low Deviation Band Alarm areassigned to process variables. They remainunchanged from segment to segment during ramp andsoak. However, since a deviation alarm is relativeto setpoint, and the setpoint varies during rampand soak the deviation alarm will "track" thesetpoint during a ramp and soak cycle.The global alarm output will be active when anyalarm condition exists and the alarm has beenturned on. Logic outputs can be assigned to anyalarm, and in fact one logic output can beassigned to any number of alarms. In this case,the logic output will be active whenever any ofits assigned alarms is active.Alarms must be acknowledged before the displayannunciation or the global alarm output will becleared. However, an assigned alarm output willclear when the alarm clears whether or not it hasbeen acknowledged.Auto ModeBaud RateThe loop mode in which the PID control output isset by the controller in response to the processvariable.The serial bit transfer rate for controller tocomputer communications. May be set at 9600 or2400 baud. The default is 9600.G-1