Installation Instructions
Installation Instructions
User Operation
Safety Information
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The LC1 is designed for panel mounting in a 92 mm × 92 mm cut-out.
- Mark and cut a 92 mm × 92 mm square opening in the panel.
- Using the LC1 (or the supplied template), mark the four mounting hole positions.
- Drill 4 × 2.5 mm fixing holes.
- Tap the holes to M3 thread.
- Secure the unit using the supplied M3 dome-headed bolts, with spring and flat washers.
Alternatively, the unit may be secured using the supplied self-tapping screws, with spring and flat washers.
⚠ Do not over-tighten the fixing screws. Excessive torque may damage the enclosure.
Wiring
When replacing an existing counter, there will be an existing pulse generation device for each channel.
If one or either of the pumping systems uses a positive displacement pump, the sensor will likely be a proximity switch. It will be mounted near the pump to detect the ‘fingers’ of a target mounted between the drive motor and the pump. This can be a PNP or NPN proximity switch,.
See ‘Sensor Wiring’ below for details.
If the pumping system uses a centrifugal pump, there will likely be a flow turbine (for example a Rotor flow sensor). Wire this as shown in the sensor wiring section.
NOTE: The sensor voltage may be listed as 5v-24v Max. in this case, set the sensor voltage to 5v as described in the Setting Sensor Voltage section of the user manual.
In cases where the counter may need to be removed in the future from the front without disturbing the panel, the supplied extension harness allows for this.
Wire the enclosed wiring harness extension into the installation, connecting it to the vehicle harness as required, the harness wires are all numbered as per the terminals on the LC1. The number of wires actually used will depend on the installation itself and in some cases, you may prefer to remove the plug from extension harness and wire it directly to the vehicle. If the extension harness is used, any individual wires which are NOT used should be removed from the LC1 terminal block. Do NOT rely on the glue spot on the cable to insulate the end of the wire, this is only there to keep the cable numbers in place during transportation.
To wire the plug directly to the vehicle, use crimp ferules on the ends of the wires and be careful not to allow any stray strands of wire to link adjacent terminal blocks.
Sensor Wiring
The counter requires positive input pulses from PNP proximity switches or similar.This text should be replaced with information about you and your business
If using an NPN (negative pulse) sensor, a 1k ohm 0.5W pull-up resistor is required between V+ and signal (Sig) on the LC1.
If using a 2 wire proximity switch , a 1k ohm 0.5W pull-up resistor is required between V+ and signal (Sig) on the LC1.
Common colours
- Brown +
- Blue GND
- Black Sig
Wiring Diagram
The device must only be powered from a 12–28V DC SELV (Safety Extra Low Voltage) supply.
Sensor Wiring
v
The counter requires positive input pulses from PNP proximity switches or similar.
The LC1 is designed to fit in a dash panel or enclosure, into a 92mm x 92mm hole. If replacing an existing counter, it may fit directly into the existing hole.
If creating a new installation, mark out a 92mm x 92mm hole with 4 x 2.5mm mounting holes as per the supplied template.
If the LC1 fits into an existing hole, Use the LC1 to mark the 4 outside fixing holes on the panel and drill 4 x 2.5mm fixing holes. Tap the holes with an M3 thread and use the supplied dome headed bolts with spring and flat washers. Alternatively, secure with Self Tapping screws with spring and flat washers supplied. In either case, DO NOT OVER-TIGHTEN.
When replacing an existing counter, there will be an existing pulse generation device for each channel.
If one or either of the pumping systems uses a positive displacement pump, the sensor will likely be a proximity switch. It will be mounted near the pump to detect the ‘fingers’ of a target mounted between the drive motor and the pump. This can be a PNP or NPN proximity switch,.
See ‘2. Sensor Wiring’ on page 4 for details.
If the pumping system uses a centrifugal pump, there will likely be a flow turbine (for example a Rotor flow sensor). Wire this as shown in the sensor wiring section.
NOTE: that the sensor voltage may be listed as 24v Max. in this case, set the sensor voltage to 5v as described in the Sensor Voltage section of this manual.
For new installations where no existing sensors exist, pulse devices will be required.
For systems using a positive displacement pump, a sensor can be mounted if practical between the drive motor and the pump. There are many possibilities of drive motor and pump combinations for which installation instructions is beyond the scope of this manual. The Simplest solution if no proximity switch mounting is possible/practical, OR if the pump is a centrifugal type, is to use a turbine flow meter such as the Rotor flow sensor. In this case.
If help is required with flow sensors, please contact LiquiCount for help enquiries@liquicount.co.uk
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