Mettler Toledo M400 Spezifikationen Seite 20

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Transmitter M400 20
© 02 / 2010 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400
Printed in Switzerland 52 121 378
4.2 Connection of power supply
All connections to the transmitter are made on the rear panel of all models.
a
Be sure power to all wires is turned off before proceeding with the installation. High voltage may
be present on the input power wires and relay wires.
A two-terminal connector on the rear panel of all M400 models is provided for power connec-
tion. All M400 models are designed to operate from a 20–30 VDC or a 100 to 240 VAC power
source. Refer to specifications for power requirements and ratings and size power wiring accord-
ingly (AWG 14, wire cross-section ≤ 2.5 mm
2
).
The terminal block for power connections is labeled ”Power” on the rear panel of the transmitter.
One terminal is labeled N for the Neutral wire and the other + L for the Line (or Load) wire.
The terminals are suitable for single wires and flexible leads up to 2.5 mm
2
(AWG 14). There is
no earth ground terminal on the transmitter. For this reason the internal power wiring within the
transmitter is double insulated and the product label designates this using the d symbol.
4.2.1 Housing (wall mount)
1
2
1: Connection of power supply
2: Terminal for sensors
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