User's Manual

FUNCTIONAL DESCRIPTION
Operation
As a standard Hetronic MFS receiver, this module is equipped with 2 microcontrollers, Main and
Stop, for safety and redundant control of E-Stop Relay outputs. The Stop controller is common to
standard 2.4GHz MFS receivers. The Main controller will have full control of RF, analog inputs,
digital outputs, USB, RS232 and CAN interfaces.
There are 2 CAN interfaces, namely CAN1 and CAN2, with optional isolated supplies, RS232
interface with a 4-pin Dubox header and a USB interface that can be used for firmware update and
H-Link configurations.
CAN2 will be dedicated to J1939 protocol for possibility of controlling and monitoring other devices
on the truck using J1939 protocol. CAN1 will be used as a CAN Master on CAN open protocol to
control and monitor other Hetronic Slave devices.
RTC with a back-up battery shall be used to keep time for data logging of different possible events
such as abnormal conditions and operating times.
Nominal operating voltage range will be 9 to 24Vdc. Electronic control unit will remain operational
within 6 to 36Vdc.
SYSTEM OVERVIEW
Theory of Operation
The Hetronic radio remote control system includes a transmitter and receiver. The transmitter
electronically generates a carrier frequency
which allows it to communicate with the receiver. Each system is programmed with a unique address
code. This code allows the operation
of multiple systems in the same general vicinity. The receiver only accepts commands from the
transmitter with the same address code.
NOTE: The receiver and transmitter have the address code set at the factory.
E-Stop Function
The most important features of the radio remote control system is the E-Stop. The transmitter sends
the E-stop status signal along with the specified crane/machine function. This method confirms that
ongoing operations are safe. If the E-stop pushbutton is pressed, the relay module in the receiver
causes all crane/machine motions to stop. The receiver goes into Safe mode. To restart the system,
disengage the E-stop button and press the Start/Horn button. The E-Stop responds faster than any
other function. When E-Stop is engaged, the system ignores any other signal that is
transmitted.
The problem must be corrected before the system will respond to any other signal. The E-Stop is
self-monitoring and redundant in the transmitter
and receiver. The system performs a self-test to ensure the E-Stop circuit is working properly. If an
error is detected, the system automatically
goes into Safe mode. When the transmitter is turned on, it performs a self-test to be sure that
communications are within designated parameters.
If an error is detected, the transmitter will not transmit any signals.