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9.3
Connecting the solid-state overload relay for IO-Link
The 3RB24 solid-state overload relay for IO‑Link is connected to the IO-Link master via removable
terminals and supplied with 24 V DC via this connection.
Hazardous voltage!
If voltages are too high, the overload relay can be damaged and electric shock can result.
Use only power supplies that comply with the requirements of protective extra-low voltage
(PELV in accordance with IEC EN 50178).
Hazardous voltage!
Will cause death or serious injury.
Turn off and lock out power before working on this equipment.
There are 2 methods of supplying the overload relay with voltage via the control circuit.
Option 1: Connection to IO-Link master
Connect the overload relay with the master via the three cables L+, C / Q and L-. The overload
relay (slave) is supplied with voltage via the three cables L+, C / Q and L-. The overload relay
communicates with the master via the cable C / Q.
Figure 9-4
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
DANGER
DANGER
I(-)
T2
Y2
96
95
98
T1
I(+)
Y1
SIRIUS
DEVICE /
96
95
98
IO-LINK
Q1
GND FAULT
Q2
THERMISTOR
OVERLOAD
CLASS/I
MAX
RESET
30
20
10
AUTO
10
20
5
30
MAN
30
5
20
10
10 5
20
30
20
TEST/
30
RESET
15
40
50
60
10
70
80
100
%
90
x I
MAX
3RB2483-4AA1
G/JJMMTT *Exx*
L+
C/Q
L-
Connection to IO-Link master
9.3 Connecting the solid-state overload relay for IO-Link
Connecting
77
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