Standard function
A1/A2
Ini t.
K1
K2
ϑ1
ϑ2
hyst .
hyst .
Delay
Delay
Reset
closed
K1
K2
open
DEV. MO DE = Std.
MON.MODE = Over
AUTO RST = off
Memory = on
Ini t.
Delay
Delay
DEV. MO DE = Std.
MON.MODE = Over
AUTO RST = on
memory = on/off
ϑ1>ϑ2
A1/A2
K1
K2
ϑ1
ϑ2
hyst .
hyst .
Reset
K1
K2
Ini t.
Delay
Delay
Ini t.
Delay
Delay
A1/A2
K1
K2
ϑ1
ϑ2
hyst .
hyst .
Reset
K1
K2
Ini t.
Delay
Delay
Ini t.
Delay
Delay
A1/A2
Ini t.
K1
K2
ϑ2
ϑ1
hyst .
hyst .
Reset
K1
K2
Ini t.
ϑ2>ϑ1
Delay
Delay
Delay
Delay
principle
closed
open
principle
closed
open
principle
closed
open
principle
DEV. MO DE = Std.
MON.MODE = Under
AUTO RST = off
Memory = on
DEV. MO DE = Std.
MON.MODE = Under
AUTO RST = on
memory = on/off
DEV. MO DE = Std.
MON.MODE = Window
AUTO RST = off
Memory = on
DEV. MO DE = Std.
MON.MODE = Window
AUTO RST = on
memory = on/off
DEV.MODE = St d.
MON.MODE = Window
AUTO RST = off
Memory = on
DEV. MO DE = Std.
MON.MODE = Window
AUTO RST = on
memory = on/off
1
1 1
2
1 1
1
1 1 1
2
1
1
1
1
1
2
1 1
1 1
1 1 1
1
11C/14NO
K1
11C/12NC
11C
14NO12NC 11C
14NO 12NC
1
21C/24NO
K2
21C/22NC
21C
24NO
22NC 21C
24NO 22NC
2
2 2 2
2 2
2 2
2 22
2 2 2
2
2
2 2
2 2
2
1
1 11
2
1 1 1
1
22 2
2 2 2
33NO/34NO*)
K3
3
33NO
34NO
33NO
34NO
1) IRDA ERR
[
2)
3)
4) U = 0
5) OUT OF RANGE
*) The 33NO/34NO relay output is located on the 3RS29 sensor expansion module
Figure 6-3 Standard function time diagram
ϑ1> ϑ2
ϑ1 e.g. 20 °C
ϑ2 e.g. 30 °C
Digital devices with IO-Link
6.4 Time diagrams
3RS2 temperature monitoring relay
54 Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002
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