Device Description - WAGO 750-451 Manual

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Device Description

3 Device Description
The I/O module 750-451 (8 AI RTD) 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 set the required
operating mode.
The I/O module has eight input channels, providing a direct connection to 2-wire
resistance sensors.
The sensors are connected to Push-in CAGE CLAMP
+A8/−A8.
The assignment of the connections is described in the "Connectors" section.
Connection examples are shown in section "Connect Devices" > ... >
"Connection Example(s)".
The operating status of the channels is indicated by a green status LED per
channel.
A red error LED per channel indicates a wire break, a short circuit or that the
signal is outside the measuring range.
The meaning of the LEDs is described in the "Display Elements" section.
Do not exceed maximum values via power contacts!
The maximum current that can flow through the power jumper contacts is 10 A.
The power jumper contacts can be damaged and the permissible operating
temperature can be exceeded by higher current values.
When configuring the system, do not exceed the permissible maximum current
value. If there is a higher power requirement, you must use an additional supply
module to provide the field voltage.
Use supply modules for ground (earth)!
The I/O module has no power jumper contacts for receiving and transmitting the
earth potential. Use a supply module when an earth potential is needed for the
subsequent I/O modules.
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.
Manual
Version 1.2.0
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
®
terminals +A1/−A1 ...