Mettler Toledo M300 ISM Especificações Página 22

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Transmitter M300 22
© 12 / 11 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M300
Printed in Switzerland 52 121 389
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 M300 models is provided for power connec-
tion. All M300 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.
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 1/4DINhousing(panelmount)
1
2
1: Connection of power supply
2: Terminal for sensors
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