Watlow 12LS Controller - Manual (Page 8)

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1.0 INTRODUCTION
The ANAFAZE 12LS is a powerful 1/8th DIN controller that delivers 12 fully independent loops
of PID control. It functions as both a stand alone controller and as the key element in computer
supervised data acquisition and control systems. An LCD front panel display and a touch keypad
are available for local entry of control and other operating parameters. The ANAFAZE 12LS
can also be supervised by a computer or programmable controller through the standard serial
interface.
The ANAFAZE 12LS delivers critical flexibility needed for multiple loop industrial and other
control applications:
Direct Connection of Mixed Sensors: Versatile analog inputs allow direct connection of
most industrial sensors. Thermocouple inputs include reference junction compensation,
linearization, upscale break detection, and a choice of °F or °C display.
Automatic Scaling: All sensors can be automatically scaled by entering any two
measurement points. For example, to scale a pressure sensor, enter two points such as 28%
is 80 PSI, and 82% is 260 PSI. All subsequent readings, and entries such as setpoint and
alarms will be in PSI.
Selectable Control Outputs: Each digital control output can be selected as: on/off, time
proportioning, or distributed zero crossing. Each loop can be independently set for on/off,
P, PI, or PID control with reverse acting [heat] or direct acting [cool] output.
Alarms -- Complete Process Monitoring: For process monitoring a unique alarm
capability is included. A deviation band alarm, and high and low process [fixed] alarms
can be independently set for each loop. In addition to global annunciator digital output,
each alarm can include a single or grouped digital output. For example, the digital output
from all the high process alarms can be directed to a single output for automatic process
shutdown.
Front Panel or Computer Operation: Controller operation and setup is possible from
the front panel or from a local or remote computer. ANAFAZE offers ANASOFT, an IBM
PC or compatible, menu driven program to set the ANAFAZE 12LS parameters. In
addition, ANASOFT features graphic trend plotting, process overviews, printouts, and data
archiving in LOTUS compatible files.
Multiple Job Storage: Up to 8 jobs can be stored in protected memory and selected with
a single entry. Each job is a set of operating conditions, including setpoints and alarms.
Thus if a single oven is producing multiple products, entry of the job number will setup all
the loops. Dual Output Standard: The ANAFAZE 12LS includes dual control outputs
for each loop with a second set of control constants for heat/cool applications.
Optional Ramp and Soak: The ANAFAZE 12LS is also available with a built in
powerful ramp and soak programmer for batch processing.
Intelligent Front Panel Delivers Convenient Operation