Liebherr Liccon System: Microtec Mkii Light Control Module Input Connection
Liebherr Liccon System: Microtec Mkii Light Control Module Input Connection
Liebherr Liccon System: Microtec Mkii Light Control Module Input Connection
au
Deriving input signals to the Microtec MkII Light Control Module from the
Liebherr Liccon System
Disclaimer
Microtec products are warranted against defects in materials and workmanship for a period of 12
months from the date of purchase. Microtec will at its discretion repair or replace defective goods
within the warranty period. The warranty excludes failures caused by incorrect connection or poor
workmanship on the part of the installer. The users exclusive remedy and the suppliers sole
liability is limited to refund of the purchase price or replacement of any product shown to be
otherwise than as warranted. The supplier will not be liable for incidental or consequential
damages of any kind.
These Instructions.
The following instructions detail the input connections only to the Microtec MkII light control
module for a specific crane / computer type. For details of input connections for a different crane /
computer see the specific instructions for that machine or use the “overview” for customised
installations.
Reasonable care is exercised in the preparation of these instructions, but variations in machine
build may impact the accuracy from time to time and are beyond our control. These instructions
should be used by suitably competent personnel for guidance only.
These instructions should be read in conjunction with the Microtec MkII Light Control Module
overview for detailed description of connections, specifications, and configuration.
For details of output connections to Microtec and many other types of external warning light, visit
our website at www.microteceng.com.au
Preliminary.
Set up the crane and check that the crane systems are fully functional and overload cut out
devices function as prescribed by the manufacturer. Check the satisfactory operation of override
switches and indicators.
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Input Connections.
The Light Control Module requires electrical inputs from the machine to activate the outputs.
Some signals that may be required are:
Possible connection points from which these signals may be derived are detailed in table 1. Begin
by verifying the change in voltage for the given function at the prescribed connection points with a
volt meter. When sure of the connections isolate or disconnect the batteries before commencing
electrical work.
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Microtec Engineering www.microteceng.com.au
Input sensitivity.
The input sensitivity of the light control module inputs should be set to the values in Table 3. For
more information on configuration see Microtec MkII Light Control Module overview.
Table 3.
ON ■
OFF ■ ■ ■ ■ ■ ■ ■
1 2 3 4 5 6
Settings Mode
Input Polarity
On completion of the wiring the normal input polarity of the Light Control Module must be set as
follows:
Table 4 Fig.1
ON
OFF ■ ■ ■ ■ ■ ■ ■ ■
1 2 3 4 5 6
Settings Mode
Pull Up Resistors
The Pull Up resistors should be set on the Light Control Module as follows:
Table 5 Fig. 2
ON
OFF ■ ■ ■ ■ ■ ■
1 2 3 4 5 6
Pull Ups
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Functional tests.
On completion of the electrical work functional tests should be conducted to verify the
performance of the system. Set up the crane in a normal working state and ensure that no
overrides are active. Providing that the values prescribed in Table 2 were correct and the Input
Polarity DIP switches agree with Table 4 the warning light should be Green.
If the warning light does not settle at green check the troubleshooting section below.
•Impose or simulate a 90% load on the crane, the warning light should show Amber.
•Impose or simulate a 100% load on the crane that causes a motion cut, the warning light should
show Red and sound the buzzer. Return the crane to a safe (Green) working range.
•Carefully overwind each winch to impose a 2 blocked state on the crane. In each case the
warning light should show Red and sound the buzzer. Return the crane to a safe (Green) working
range.
If all of the above states test OK the cables may be tidied and the covers replaced.
Troubleshooting
Check the input voltages with the crane in a safe, normal working state. If any voltages differ from
those in table 2, check that all overrides are off and double check your connections. If incorrect
operation continues check that your input configurations agree with the appropriate sections
above.
Table 2.
Light Control Module Reading with volt meter
Input connection No. with respect to GND,
Fig 2. Crane in safe state.
1 0V
2 0V
3 X
4 X
5 X
6 X
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