WAGO-I/O-SYSTEM 750
Device Description
13
750-1425 8DI PTC
Manual
Version 1.1.0
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Device Description
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The I/O module 750-1425 (8DI PTC) is used to connect PTC thermistors
according to DIN 44081 and DIN 44082 for thermal monitoring (overload
protection) of motors, machinery, bearings, etc.
Up to 6 PTC thermistors can be connected in series per channel.
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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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If the nominal response t
emperature (ϑnat) is exceeded, a bit in the input process
image of the I/O module is set.
In addition, wire breaks and short circuits are monitored per channel. If an error
occurs, a bit is also set in the input process image.
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One green status LED and one red error LED per channel indicate an
overtemperature or general wiring error.
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The meaning of the LEDs is described in the “Display Elements” section.
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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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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.
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The field voltage and the system voltage are electrically isolated from each other.
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The I/O module 750-1425 can be operated with all fieldbus couplers/controllers of
the WAGO-I/O-SYSTEM 750. There are the following exceptions:
•
750-343, ECO PROFIBUS coupler (I/O module is not supported)
•
750-354, EtherCAT coupler (diagnostics are not mapped in the PI)
•
750-830, BACnet controller (channels cannot be disabled)
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