HCT evc User Manual page 17

Coil A/B Max Current (0 to 3Amps)
 When Current Feedback is "ON", it determines the max current.
When Current Feedback is "OFF", the Coil A/B Min Current setting does not apply and is grayed out. The
Max Current is used as a reference for the evc/epc to declare a coil short condition when the output
current is 0.5A higher than the max setting.
Ramp Up (.001 to 65.000 Seconds) – Determines the time for Output A or B to ramp UP from minimum to
maximum current.
Ramp Down (.001 to 65.000Seconds) – Determines the time for Output A or B to ramp Down from
maximum to minimum current.
Coil A&B PWM Hz (33 to 500Hz) – This is the PWM or Dither frequency according to the valve spec.
(Sun cartridges are 140Hz).
023-00354-Rev1.4 evc/epc User Manual
evc/epc Controller
With SAE J1939 Interface
The output PWM duty cycle
matches the percent of demand.
The current will change when
supply voltage and/or coil
temperature changes.
The evc/epc does not declare an
error because the output current
1.16A is 0.5A higher than the
not
max setting 0.7A.
The evc/epc will declare an error
because the output current 1.16A is
0.5A higher than the max setting
0.63A.
Copyright © High Country Tek, Inc. – 2013
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