WAGO-I/O-SYSTEM 750 Device Description 13
750-406 2DI 120 V AC
Manual
Version 1.2.0
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3 Device Description
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The digital input module 750-406 (2DI 120 V AC) receives control signals from
digital field (e.g. of sensors, transmitters, switches or proximity switches).
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The I/O module has 2 input channels, providing a direct connection to 2-, 3- or 4-
wire sensors.
The sensors are connected to the following CAGE CLAMP
®
terminals: DI 1,
120 V, N and ground, or DI 2, 120 V, N and ground.
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The assignment of the connections is described in the “Connectors” section.
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Connection examples are shown in section “Connecting Devices” > … >
“Connection Example(s)”.
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Each input channel has a RC noise rejection filter with a time constant of 10 ms.
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The I/O module inputs provide high-side switching. If the 120 V potential for
field power is switched to an input connection, the signal status for the
corresponding input channel is set to "high."
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A green LED indicates the switched status of each channel.
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The meaning of the LEDs is described in the “Display Elements” section.
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Only connect to I/O modules with the same field power supply!
The I/O module 750-406 requires a field supply not equal to 24 VDC.
Therefore, this I/O module 750-406 shall only be connected to modules having
the same field power supply.
If using an adjacent I/O module designed for another field power supply, place an
appropriate supply module between this adjacent module and the I/O module 750-
406.
Failure to observe these instructions may result in damage to properties or injuries
to people.
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The I/O module receives the AC 120 V potential, the N potential and the earth
potential 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 jumper contacts!
The maximum current to flow through the power jumper contacts is 10 A.
Greater currents can damage the contacts.
When configuring your system, ensure that this current is not exceeded. If
exceeded, insert an additional supply module.
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