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Building Technologies Division Basic documentation LMV36... CC1P7544en
Infrastructure & Citiies Sector 15 Fuel meter input X75 pin 1 / X75 pin 2 25.09.2013
15 Fuel meter input X75 pin 1 / X75 pin 2
A fuel meter can be connected to acquire the amount of fuel burnt.
The fuel meter function is only available as an alternative to VSD control. If the VSD is
deactivated, a fuel meter can be connected to terminals X75 pin 1 and X75 pin 2.
The pulses per volume unit can be set separately for Fuel 0 and Fuel 1. In terms of
hardware, the fuel meter input exists only once however, that is, the change between 2
pulse counters must be made externally. Changeover can be accomplished either via
the fuel selector or an additional contactor at the safety valve output of the AGM60...
LMV...
Bild 338e/0409
X75
Sensor supply fuel meter
Fuel meter input
2
1
Figure 88: Fuel meter input X75
15.1 Configuration of fuel meter
15.1.1 Types of fuel meters
The LMV36... system is designed for use with fuel meters equipped with a Reed
contact. Pulse frequency at maximum fuel throughput must be below 300 Hz.
15.1.2 Configuration of pulses per volume unit
Depending on the type of fuel meter used, the number of pulses supplied per m³ or l fuel
must be parameterized. A maximum of 400 pulses per volume unit can be preset. The
correct amount of fuel is acquired only when this parameter is set.
When the parameter is 0, the fuel meter stops.
No. Parameter
128 Fuel meter: Pulse valency (pulses/volume unit)
129 Fuel meter 1: Pulse valency (pulses/volume unit)
15.1.3 Reading and resetting the meter readings
No. Parameter
167 Fuel volume resettable [m³, l, ft³, gal]
177 Fuel 1: Fuel volume resettable (m³, l, ft³, gal)
The cumulated fuel volume can be read out per parameter. The meter reading can also
be reset on the parameter level.
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