3 Functions
HELENOS V
7
n) Output Signals
The control unit has four analogue outputs available, two current outputs (4..20 mA) and two
voltage outputs (0..5 V).
o) Failure Diagnosis and Display
If a sensor or the actuator is at fault, an external alarm is issued and there will be change-over
to emergency operation if so provided or an engine shutdown. Internal errors get detected also
and they will be stored as all other failures. All failures can be read out with an external
handprogrammer or, if a communication program with communication cable is existing with a
PC or laptop computer.
p) Velocity Limitation and Velocity Control
In vehicle operation the velocity of the vehicle can be limited or controlled (cruise control).
q) Locomotive Operation
In locomotive operation, setpoints can be defined by means of analogue setpoint or by using
up to 16 digital speed stage switches.
For Diesel-electric locomotives the excitation of generator can be controlled depending on
speed and load by an analogue signal.
An anti stick slip device can be provided.
r) Generator Operation
In generator operation the synchronisation and load sharing can be done either in manual
mode (analogue input / digital input) with droop or isochronous in automatic mode with
accessory units from HEINZMANN.
s) CAN-Bus
Accessories such as synchronizing units, load measuring units, disturbance variable
compensation units can be connected via a CAN-Bus within the control unit. The CAN-Bus
may also be used to implement load distribution by equal fuelling (e.g., two engines on one
gear).
When selecting and determining the functions, it has to be ascertained whether
the hardware equipment suffices with respect to the total range of functions.
