High Country Tek epc, Electronic Pump Controller - A Multi-Function SAE J1939 Compatible Module - Manual (Page 21)

023-00354-Rev1.6 evc/epc User Manual 21
Copyright © High Country Tek, Inc. – 2013
evc/epc Controller
With SAE J1939 Interface
Command & Error Settings
Analog Input Active (On/Off) – Enables/Disables
the command analog input.
Analog Center Active (On/Off)

When enabled, the “Pot Center Voltage” becomes the zero demand point.

Coil A is driven from the center voltage to the max voltage and coil B is driven from the center voltage to the min
voltage

This setting is used in Dual Coil Valve Control only. The “Coil Selection Active” switch is automatically turned
OFF when the Center Active is “ON”.
Coil Selection Active (On/Off)

When the input is High, (+5V to Supply Volts) coil B is active and when Low (0V to 2.5V) coil A is active.

This feature allows the full command resolution on coil A and B.

As an example, it is used in the applications where a reciprocating action is triggered by a single high-low input.
Pot Center Error Detection at Initial Turn On

When ON, the module verifies the analog input is in the center deadband range before enabling the output(s)
after the initial power up.

Once the command is centered, the outputs will be enabled.

This safety feature ensures that the system will NOT immediately go to the previous settings after cycling the
power.