WAGO-I/O-SYSTEM 750
Device Description 15
750-528 4DO 30V AC/DC 2.0A SSR Isolated
Manual
Version 1.0.0
3
Device Description
The I/O
module 750-528 (4DO 30V AC/DC 2.0A SSR Isolated) acts together
with the MOFSET transistors to switch voltages up to 30 VAC or 48 VDC (for
resistive loads).
The semiconductor switches attached to the CAGE CLAMP
®
connection
substitute for relay contacts. Because of their wear resistance, application
availability is increased.
Although the semiconductor outputs are not continuously protected against short
circuit, they are highly resistant against pulse currents, so an external switched
fuse is promptly tripped in case of short circuit.
In addition to a suitable fuse, the output transistor withstands brief overcurrents
until switch-off without damage.
The assignment of the connections is described in the “Connectors” section.
Connection examples are shown in section “Connect Devices” > … >
“Connection Example(s)”.
The meaning of the LEDs is described in the “Display Elements” section.
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.
The I/O Module 750-528 (4DO 30V AC/DC 2.0A SSR Isolated) passes the 24 V
voltage through that it receives from an upstream I/O module or the head station
via the power jumper contacts designed as blade contacts.
Semiconductor outputs are isolated from each other, i.e. all CAGE CLAMP
®
connections on the field side are exclusively assigned to the contacts of the
MOSFET switches. All 4 outputs can be wired independently of each other with
different voltages up to 30 VAC/DC (or 48 VDC for resistive loads).
The semiconductor outputs are controlled from the internal system voltage and
are electrically isolated.
