3 Functions
Digital Governor Basic System PANDAROS III
5
3
Functions
The
HEINZMANN
electronic governors of PANDAROS series are speed governors that
offer a small range of functions. Even so, in addition to speed regulation, there are depending
on the variation the following functions available:
3.1
General functions
a) Start quantity adjustment
For setting start quantity, minimum start quantity or maximum start quantity may
alternatively be selected. If necessary either can be configured in dependence of
temperature. Furthermore, variable start quantity can be provided, by which start
quantity is automatically increased during start-up.
b) Speed ramps
For applications where speed is not supposed to respond to changes of setpoint values as
fast as possible, a speed ramp is available. According to requirements, it may be
parametrized separately for increasing or decreasing speed. In addition, a separate speed
ramp is provided for start-up which will make the engine ramp slowly to operating
speed after starting.
c) All speed governing with adjustable droop
Some applications require speed governing with droop, e,g, generator parallel operation
without
HEINZMANN
load measuring unit. The droop can be adjusted as desired.
With droop adjusted to 0, the governor operates in isochronuous mode.
d) Setting the speed range
The minimum and maximum speed adjustable by the (external) setpoint, can be
parametrised.
e) Engine stop
When the switch input for engine shutdown is activated, the governor will cause the
actuator to fully pull to stop direction until the engine has stopped.
f) Overspeed protection
An overspeed point can be parametrised. If this point is overcome, the governor will
issue an alarm and the actuator will fully pull to stop direction.
g) Correction of PID parameters
To optimize the dynamics for every operating point, the PID parameters may be
corrected in dependence of speed, temperature and load by means of freely
programmable stability maps.
