Watlow 12LS Controller - Manual (Page 11)

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Digital Inputs and Outputs Expand Versatility
Digital inputs and outputs are provided to further enhance the ANAFAZE 12LS flexibility. Digital
outputs are provided for global alarms, systems status, individual high and low alarms, and ramp
and soak events. Digital inputs are available to control the ANAFAZE 12LS in response to
external conditions.
Annunciator Alarm Output: One of the digital outputs is setup as a global output for
connection to an annunciator. This output is turned on when any alarm occurs. The output
will be turned off when the operator acknowledges the alarm from the computer or the
front panel. New alarms will cause the output to be turned on again.
Digital Outputs: 9 digital outputs can be assigned through the front panel or the computer
as alarms or as ramp and soak events. The same output can be used by more than one
alarm or event. This allows alarms to be grouped as needed. For example output 1 could
be set to respond to a high alarm on loops 2, 4, 7, and 8 or any other combination.
Digital Inputs: 8 digital inputs can be assigned as triggers for controller functions. These
would be used to change setpoint in response to an external event or as hold/continue
inputs for ramp and soak profiles.
Ramp, Soak, and Batch Control
The ANAFAZE 12LS ramp and soak version delivers powerful batch control. Independent ramp
and soak profiles can be assigned to any or all loops. Up to 12 profiles, one for each loop, can be
stored in non-volatile memory. Each profile can have up to 20 segments with digital inputs for
triggers, digital outputs for events, assured soak limits, and unlimited repeats. The profiles can be
started, stopped, held or continued from the front panel, the computer, or through the digital
inputs. Up to 9 digital outputs can be used as events and included in any profile.