Evc/epc controller, With sae j1939 interface – High Country Tek epc, Electronic Pump Controller - A Multi-Function SAE J1939 Compatible Module User Manual

Page 33

023-00354-Rev1.6

evc/epc User Manual

– 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.



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

Anti-stall

full effect



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.