Description - WAGO I/O-SYSTEM 750 Manual

8 • 750-504(/xxx-xxx) [4 DO DC 24 V 0.5 A, High-Side Switching]

Description

2.1.1.3 Description
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The connected load is switched via the digital output from the control system.
The module has four output channels. Two actuators may be directly
connected to the module.
As an example, two 2-conductor actuators may be directly connected using
connection 0 V and signal output DO 1 or 0 V and signal output DO 2. The
connection of more actuators to signal outputs DO 3 and DO 4 requires a field
side connection module (750-614) for 24V and for 0V, if need be.
Note
For the connection of inductive loads a protected circuit, e. g. a recovery
diode, has to be switched parallel to this load.
The output channels are electrically short-circuit-protected and high-side
switching. Which means that the status of the output channels is "high" if the
output channels switch to the 24 V supply voltage for the field side.
The supply voltage for the field side is derived from an adjacent supply
module by means of power jumper contacts.
The status of the four output channels is indicated via green status LEDs.
An optocoupler is used for electrical isolation between the bus and the field
side.
Any configuration of the output modules is possible when designing the
fieldbus node. Grouping of module types is not necessary.
The field side supply voltage of 24 V for the output module is derived from
adjacent I/O modules or from a supply module. The supply voltage for the
field side is made automatically through the individual I/O modules by means
of power jumper contacts.
Warning
The maximum current of the internal power jumper contacts is 10 A. When
configuring the system it is important not to exceed the maximum/sum
current. However, if such a case should occur, another supply module must be
added.
Attention
In case of overloads a supply module with fuse (750-601) must be connected
on the line side to protect the output modules!
The output module 750-504 can be used with all couplers/controllers of the
WAGO-I/O-SYSTEM 750.
WAGO-I/O-SYSTEM 750
I/O Modules