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.
DANGER
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).
DANGER
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.
OVERLOAD
RESET
MAN
AUTO
Y1
T1
CLASS/I
I(-)
T2
I(+)
L+
SIRIUS
DEVICE /
IO-LINK
GND FAULT
THERMISTOR
3RB2483-4AA1
G/JJMMTT
*Exx*
10
20
30
40
50
60
70
80
90
100
15
x I
MAX
%
20
10
5
30
20
10
5
30
20
10
5
30
10
5
30
20
1 0
0 A
1 0
0 0
A
A
0
1
1 A
TEST/
RESET
Y2
MAX
C/Q
L-
96
98
95
96
95
98
Q1
Q2
5
$
$R
QO
\
,2/LQN
0DVWHU
Figure 9-4
Connection to IO-Link master
Connecting
9.3 Connecting the solid-state overload relay for IO-Link
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
77
