EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018
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6.5
Transmitter Range
Each input channel requires a low and high span of the transmitter range and
is a user input for the program to calculate the range for each designated input
channel. Ensure that the units and span matches the selected device. The cal-
culated range value will be used to calculate the desired units to be displayed.
The displayed value of the programmed range is the calculated range based on
the units selected. This value is also an aid to calibrating the sensor span in the
calibration page.
6.6
Section 2 (Channels)
Allows the user to select the channel to be configured, with the option of add-
ing decimal points to the value. A calibration pop-up window is available when
selecting the desired channel value; it allows adjusting of the Zero and Span of
the transmitter for each of the four channels.
The Up/Down arrows can be used to approach the desired span value. If a
precise value is desired, click the input box for that signal and enter the value.
6.7
Decimal Point (DP)
Used to set the number of decimal places to display.
6.8
Section 3 (Type)
Legacy configuration will only allow for a 1-5V transmitter range, imitating the
limitations of the EPC-200. A Sensor Volt Range span is available for custom
voltage devices.
6.9
Section 4 (Engine Speed)
Displays the actual RPM value and allows the user to enter the gear tooth
count or pulses per revolution for the engine.
6.10 From the Menu button, select AFM (Air/Fuel Menu) to display the Air/Fuel
ratio curve configuration. By default the program assumes the PID page as the
home position. In addition to the PID control page, five supplementary control
functions can be selected.
6.11 In addition to the legacy sensor configuration page, a second option is available
that allows two addition sensor type to be use. The EPC-250 accepts .5–4.5V
and 4–20mA inputs which must be programmed within this configuration
page. Before the input can be programmed as 4-20mA it must be selected on
the terminal board by the CHANNEL SWITCH that internally connects a 200
