Watlow 12LS Controller - Manual (Page 25)

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3.3.5 INPUT SCALING
The ANAFAZE 12LS contains an area that can be used to install resistors to scale input voltages and convert milliamp
inputs to match the -10 to 60mv (-16.7% to 100%) input range. The input circuit is designed to enable connection of
current inputs (such as 4 to 20ma), and voltage inputs. ANAFAZE will supply input scaling as needed -- order option
12LS-SI-XX. The input circuit is shown below:
The location of RA and RB for each input is shown on the following table:
RA
is shorted by a jumper on the PC board, remove this jumper to install RA.
Resistors should be 0.1% metal film, 1/4 watt. Note that the resistors must be stood on end due to the compact size of
the unit. Other components such as capacitors can be installed for signal conditioning. Please consult ANAFAZE.
The PC board silk screen shows the resistor locations.