3 Functions
4
Digital Governor Basic System PANDAROS II
3
Functions
The HEINZMANN digital controllers from the PANDAROS series are speed governors in
which, depending on the variant in question, further variant-specific functions are available in
addition to the speed control and the general functions.
3.1
General functions
a) Start fuel adjustment
For setting start fuel, minimum start quantity or maximum start quantity may alterna-
tively be selected. If necessary either can be configured in dependence of temperature.
Furthermore, variable start quantity can be provided, by which start quantity is automat-
ically 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 par-
ametrized 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
Several applications e.g. generators in parallel without HEINZMANN load measuring
unit might require speed control with droop (proportional band). The droop can be ad-
justed as desired. With droop adjusted to 0, the governor operates in isochronous mode.
d) Setting the speed range
The minimum and maximum speed adjustable by the (external) setpoint, can be para-
metrized.
e) Engine stop
When the switch input for engine shutdown is activated, the governor will cause the ac-
tuator to fully pull to stop direction until the engine has stopped.
f) Overspeed protection
An overspeed point can be parametrized. If this point is overcome, the governor will is-
sue an alarm and the actuator will fully pull to stop direction.
g) Gradient monitoring
The engine speed signal can be monitored for a permissible change speed (gradient).
