DKG-379 User Manual Rev_02
V-15
(24-12-2012)
K43D01-EN - 77 -
The controller offers an automatic charge cycle for the engine battery.
When the engine battery weakens, the genset will run automatically during programmed period.
This operation is different from the battery bank charging. The engine will run unloaded in order to charge
the engine battery, protecting it from total discharge when the genset has not run for a long time.
Related parameters:
Battery Start to Charge Voltage
: If this parameter is different from zero and the engine battery voltage
falls below this limit then the controller will run the engine unloaded, in order to charge engine battery.
The running duration is determined by the battery charge timer parameter.
Battery Charge Timer
: This parameter determines the engine battery charge running duration. The
minimum run time is 2 minutes.
The DKG-379 is able to control the engine rpm through a
motorized potentiometer
using its
speed
up/down
output functions.
In order to use speed up/down output functions, corresponding digital output functions of the Relay
Definitions group should be set properly.
RELAY-1(terminal_23) and RELAY-2 (terminal_22) have programmable functions, selected from a list.
Digital outputs may be increased using
Relay Extension Modules
. If RELAY-1 and RELAY-2 are not
available, still speed up/down relays may be used with an extension module.
The function codes for speed up/down outputs are found in the function table of the Relay Definitions
parameter group:
30
Speed Up Pulse
31
Speed Down Pulse
Related program parameters:
Speed up/down pulse minimum duration:
minimum up/down pulse duration.
Speed up/down pulse maximum duration:
maximum up/down pulse duration.
Speed up/down pulse delay:
This is the minimum delay between 2 successive speed up/down pulses.
If speed_up or speed_down functions are assigned to digital outputs, then the unit will start to generate
speed up/down pulses in order to control the external speed potentiometer. The governor control output will
continue operation.
PID Gain Value and PID Stability Percent parameters will continue to affect the rpm stability.
The external potentiometer should be set to mid position at the initial condition.
18.2. Speed UP/DOWN Relay Outputs
18.1. Charging the Engine Battery
18. SOFTWARE FEATURES
