WAGO-I/O-SYSTEM 750
Device Description 15
750-496 8AI 0/4-20mA S.E.
Manual
Version
1.2.2
3
Device Description
The I/O module 750-496 (8AI 0/4-20mA S.E.) receives signals with standardized
values of 0 ... 20 mA, 4 … 20 mA and 3.6 … 21 mA (Namur NE43) from the field
range.
The I/O module has 8 input channels for field signals.
The sensors are connected to the Push-in CAGE CLAMP
®
terminals AI1 and
24 V or AI2 … AI8 and each 24 V.
The channels have a common reference potential.
The assignment of the connections is described in the “Connectors” section.
Connection examples are shown in section “Connect Devices” > … >
“Connection Example(s)”.
The input signal is electrically isolated and is transmitted with a resolution of
12 bits.
The field voltage and the system voltage are electrically isolated from each other.
The operational readiness and the trouble-free local bus communication of the
channels are indicated via a green function LED.
One red error LED per channel indicates a short circuit or a measurement
underrange/overrange.
For sensor types 3.6 ….. 21 mA and 4 … 20 mA, the red error LED also indicates
a wire break.
The meaning of the LEDs is described in the “Display Elements” section.
Power to the internal electronics is supplied via both the internal data bus and the
field supply.
The I/O module 750-496 (8AI 0/4-20mA S.E.) receives the 24 V voltage supply
for the field level from an upstream I/O module or from the fieldbus
coupler/controller via blade-formed power jumper contacts. It then provides these
potentials to subsequent I/O modules via spring-formed power jumper contacts.
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.
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.
