High Country Tek emc-1V - Manual (Page 24)

Part No:- 021-00351 Rev 1.0 emc-1P & emc-1V e-Fan System Controller User Guide Page 24
e-Fan Cooling System Controllers
with J1939 Interface
Output Settings
Refer to the requirements set by the fan manufacture for the following 3 adjustments:
1. Minimum PWM% (0-100%) output
2. Maximum PWM% (0-100%) output
3. PWM Freq ( 33-500Hz): This is the ‘dither’ or operating frequency for the PWM% output.
Minimum RPM (50-4000RPM)
This value is the engine RPM needed before the fan controller will start to operate above the minimum
system speed set by the motor pressure drop – this reduces the load on the starter motor.
NOTE: Information for this feature is taken from the J1939 Bus and cannot be used if not connected.
Start Up Delay (0-30 seconds)
Delay action is only triggered once when power is first applied to the module i.e. at key ON engine start
time. This feature is designed to reduce the load on the starter motor by holding off fan operation until the
time set has expired.
Input 0 to 30 seconds
Ramp UP & Down (0.5-30 seconds)
This will affect the output rate of change. These should be set to give smooth operation but not too long
or performance will be affected by slowing down fan speed response.
Auto Reverse Settings
Dwell Time (0-60 seconds)
This is the time that the controller allows for the fan to get to minimum speed before changing direction
when entering or leaving the reverse mode.
Time in Reverse (0-120 seconds)
Sets the duration for fan reverse operation.
Auto Reverse Time (1-1440min)
Sets the wait period between fan reverse cycles.
Disable Auto Revers
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When checked this will set the Auto Reverse Time to 0.0 and not allow the use of the setting.
Note: If J1939 messages are enabled, the RPM must be above minimum RPM setting for fans to work in
the forward or reverse direction.
With an over-temp alarm active, only the manual input will start a Reverse Cycle. Auto Reverse is
disabled.