WAGO-I/O-SYSTEM 750
Device Description
15
750-464 2/4 AI RTD configurable
Manual
Version 1.0.1
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3
Device Description
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The I/O module 750-464(2/4 AI RTD configurable) measures resistance at field
level or evaluates platinum or nickel resistance sensors.
The resistance values are converted into temperature values. A microprocessor in
the I/O module linearizes the measured resistance values and converts them into a
numeric value proportional to the temperature of the selected resistance sensor.
The
WAGO-I/O-CHECK
commissioning tool can be used to configure the
required operating mode.
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The I/O module has two or four input channels (configurable), providing a direct
connection to 2- or 3-wire resistance sensors.
The input signals are connected to the CAGE CLAMP
®
conneR1/-R1 ...
+R4/-R4.
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The assignment of the connections is described in the "Connections" section.
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Connection examples are shown in section "Connecting Devices"
"Connection
Examples".
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The "ready" state of the respective channel and the internal data communication is
indicated by a green function LED.
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A red fault LED per channel indicates a wire break, a short circuit or that the
signal is outside the measuring range.
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The meaning of the LEDs is described in the “Display Elements” section.
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The I/O module receives the 24V voltage supply for the field level from an
upstream I/O module or from the fieldbus coupler/controller via the power
contacts used as blade contacts. It then provides this potential to subsequent I/O
modules via the power contacts used as spring contacts.
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Do not exceed maximum current via power contacts!
The maximum current to flow through the power contacts is 10 A.
Greater currents can damage the power contacts.
When configuring the system, ensure that this current is not exceeded. If
exceeded, an additional potential feed module must be used.
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Use potential feed module for Ground (earth)!
The I/O module has no power contacts for PE intake and transfer. Use a potential
feed module when a PE feed is needed for the subsequent I/O modules.
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The field voltage and the system voltage are electrically isolated from each other.
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With consideration of the power jumper contacts, the individual modules can be
arranged in any combination when configuring the fieldbus node. An arrangement
in groups within the group of potentials is not necessary.
