
WAGO-I/O-SYSTEM 750 Device Description 13
753-514 2DO 125V AC 0.5A/ Relay 2CO/ Potential Free
Manual
Version 1.1.0
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3 Device Description
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The 753-514 Digital Output Module transmits binary control signals from the
automation device to the connected actuators (e.g., solenoid valves, contactors,
transmitters, relays or other electrical loads).
Pos: 18 .1.2 /S erie 750 ( W AG O-I/ O-SYST EM )/G erä te bes chr ei bu ng/Ei nl ei tung /I/ O-B esc hrei bu ng /DO /I / O-B esc hr ei bu ng 750-0 514 2 D O 2-L eiter (DO oder / DO) @ 22\mod_1425475259743_21.docx @ 176742@ @ 1
The I/O module has 2 output channels, providing for direct connection of
actuators to the CAGE CLAMP®connectors DO 1 or /DO 1 of channel 1 and an
external N potential or DO 2 or /DO 2 of channel 2 and an external N potential.
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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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An external potential of 125 VAC can be applied to relay contacts 11 and 21.
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Inductive loads must be dampened!
For the protection of relay coils and contacts, inductive loads must be dampened
with an effective protection circuit!
Examples of protection circuits can be seen in the section “Protective Circuits for
Contacts of Relay Modules”.
Pos: 18 .1.7 /S erie 750 ( WAGO -I/O-SYSTEM)/Wichtige Erläuterungen/Sicherheits- und so nstige H inwei se/A chtung /Ach tung: Verl ust vo n Eigens chaft en durc h hohe Sc haltl eistung ! @ 22\mod_1425462925724_21.docx @ 176630@ @ 1
Loss of properties due to high switching power!
To prevent the gold layer from being damaged, 30 VDC switching voltages and
50 mA currents must not be exceeded. Higher switching power with switching arc
eventually evaporates the gold layer. This can cause the relay to lose its properties
in regards to minimum switching current.
Pos: 18 .1.8 /S erie 750 ( WAGO -I/O-SYST EM )/G erä te bes c hrei bu ng/Ei nl ei tu ng/I/ O-B esc hrei bu ng /DO / I/ O-B esc hrei bu ng 750-0 5 xx W ec hsler @ 5\mod_1246866311313_21.docx@ 36609@ @ 1
The I/O module incorporates two change-over relays connected potential free.
This means on the field side only the connections of the relay contacts are present.
Therefore, both relays can be operated with different voltages.
Because of the potential free contacts also a serial connection of the two relays is
possible as well as a serial connection of several relays with block wise
connection of several modules.
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Depending on the relay status the voltage of the middle contact 11 resp. 21 is
switched to the lower contact 12 resp. 22 or to the upper contact 14 resp. 24. In
the OFF state the contacts 11 resp. 21 are switched to the lower contacts 12 resp.
22.
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The internal system voltage is used to trigger the relays.
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The switching status of the two relays is indicated via green status LEDs.
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The meaning of the LEDs is described in the “Display Elements” section.