Connection Tool - Siemens 3RS2 Manual

Connection

11.5 Connection tool

The table below contains an explanation of the terminal cover designations used:
Terminal designation
A1(+)
A2(-)
A2(-)/Y2
Y1
1T1/1T2/1T3
2T1/2T2/2T3
3T1/3T2/3T3
AI(+)
AI(-)
L+
L-
C/Q
11C/21C
14NO/24NO
12NC/22NC
33NO/34NO
11.5 Connection tool
The devices are equipped with either screw terminals or spring-type terminals.
The temperature monitoring relays can be adjusted with the following tool options:
Screw terminals
Screw terminals with ergonomic handling when using a standard screwdriver.
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Explanation
Power supply (+)
Connection of 24V AC/DC or 24-240V AC/DC
Power supply (-)
Connection of 24V AC/DC or 24-240V AC/DC
Power supply (-)
Connection of 24V AC/DC or
24-240V AC/DC
Reset input
Connection of floating NO contact between Y1 and Y2
Sensor input 1
Connection of thermocouples
Sensor input 2
Connection of thermocouples
Sensor input 3
Connection of resistance sensors
Analog input (+)
Connection 4 mA ... 20 mA
Analog input (-)
Connection 4 mA ... 20 mA
Power supply IO-Link device (+)
Power supply IO-Link device (-)
Serial communication interface IO-Link interface
Root of the change-over relay
NO contacts of the change-over contacts
NC contacts of the change-over contacts
NO contacts relay 3
Common terminal for power supply and reset input
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002