MV-LC0055 4-20 mA Platform Load Cell, 50-800 kg

METRAVON MV-LC0055 is listed as a 4-20 mA platform load cell for the 50-800 kg family, with a 12-24 V DC supply entry. It is a candidate for a PLC current-input weighing channel, subject to confirmation of the delivered electrical configuration. The reference combines those current-output entries with a bridge-style circuit drawing. A safe integration decision requires the actual current-output terminal diagram, not a connection inferred from a neighbouring bridge model.

Confirm the 4-20 mA platform load cell wiring before selecting the PLC channel

Ask whether the supplied version uses a two-wire loop or separately powered output, and obtain terminal functions, polarity and the supported input load. The reference does not settle those points or establish galvanic isolation. Match the PLC active or passive input arrangement to the delivered circuit. Do not connect the 12-24 V supply to wires using the bridge excitation and signal colours shown in the generic diagram. The bridge resistance entries in that same table are not a documented permissible current-loop load.

Define what the current represents in this platform

State whether the requested 4 mA and 20 mA values correspond to gross weight, net weight or another agreed calibrated interval. Include tray dead load, working range, units and any required tare procedure. The available entry does not define those endpoint settings, fault currents or overload indication. Agree the signal mapping in the offer, then check the measured current against the PLC raw value and displayed weight. A correct current-to-display conversion does not by itself prove that the mechanical platform is transferring load correctly.

Allow for the 180 mm body instead of assuming a bridge-cell replacement fits

The outline gives 180 mm overall length, a separate 150 mm reference, 65 mm side height and 60 mm plan width. It also shows a covered side section and four M8 fixing positions with a 25 mm depth annotation. The attachment pattern includes 19 and 30 mm centre references. Review the complete base and tray connections, cover clearance and cable-gland access. Do not use the 150 mm reference as the full outer envelope or assume the same screw engagement as the exposed-body MV-LC0054.

Separate electrical checks from installed weighing checks

Commission the approved supply and current circuit first, using the delivered instructions and appropriate test equipment. Then apply agreed physical reference weights, compare current and PLC indication, and test unloaded return and off-centre positions. If an electrical input test passes but the loaded tray does not, inspect the attachments and unintended contacts before changing endpoint scaling. No update rate, filter response or fault-detection behaviour is specified by the current-output label; those requirements need explicit confirmation if the weight drives process decisions.

Include enclosure and support conditions in the quotation

The listed entries include IP67, 0.05% FS precision, 0.02% FS per 10 deg C temperature effect and -40 to +85 deg C operating temperature. Confirm which electrical configuration those limits cover and how the cable termination is protected. The 200% FS safe-load figure is a sensor limit, not a rating for the attached tray or a dropped-object test. Request the permitted platform dimensions and provide the most distant loading positions so corner adjustment is not assumed to cover an arbitrary platform.

If the installation already has a weighing bridge reader, the MV-LC0054 mV/V platform arrangement is another channel to assess. Its 150 mm body reference and different attachment-depth annotation must also be checked; it is not an electrically interchangeable substitute.

Quote MV-LC0055 with the PLC input specification, supply, current-to-weight mapping, complete mounting envelope and confirmed current-output terminal diagram.

PLC inputs, endpoint mapping and wiring confirmation