High Country Tek epc, Electronic Pump Controller - A Multi-Function SAE J1939 Compatible Module - Manual (Page 33)

023-00354-Rev1.6 evc/epc User Manual 33
Copyright © High Country Tek, Inc. – 2013
evc/epc Controller
With SAE J1939 Interface

When the measured RPM is above the “RPM Slow” (1900RPM), Coil A current is determined by the Fixed Set-
point.
 When the measured RPM starts to drop below the “RPM Slow”, Coil A current is reduced proportionally to the
measured RPM.

Coil A current becomes zero when the measured RPM reaches “RPM Stop” (1800RPM) or below.

W hen “Auto-Reverse” is “OFF”, Coil A current stays at 0 until the RPM increases to above “RPM Stop”, it will
increase proportionally to the measured RPM.
RPM Stop RPM Slow Engine rpm
Coil A Current @
fixed Set-point
Anti-stall starts
Coil Current
0
Anti-stall
full effect

W hen “Auto-Reverse” is “ON”, Coil A current stays at 0 and Coil B current will ramp up to the Reverse Set-
point.

After the reverse cycle is over, if the measured RPM increases to above RPM Stop, Coil A current increases
proportionally until reaching the fixed set-point. If not, the evc/epc will re- enter reverse for “Reverse Retry
Count ” times, each time remaining in reverse for “Reverse Time” duration.

If the Reverse Retry Count is depleted and the measured RPM remains below RPM Stop, the evc/epc will
declare an error and output the default settings to coil A.
RPM Stop RPM Slow Engine rpm
Coil A Current @
fixed Set-point
Anti-stall starts
Coil Current
0
Anti-stall
full effect
Coil B Current @
reverse Set-point