OPERATION
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SMARTMAC 400
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07/2022 - 4008875401 - MA SMARTMAC_400 R01 en
6.4.6 Configuration of relay 1+2
You can choose between Limit switch (threshold), Limit switch (band), Off, cleaning mode,
System alarm, Loop 1 error current, USP<645> and Field device status.
Limit switch (threshold)
In Limit Switch (Threshold) mode, you define a threshold. When the measuring value exceeds or
falls below this threshold, the relay switches.
Figure 6-9: Limit switch (threshold) overrun direction
1
Threshold
2
Hysteresis
3
Relay closed (not inverted)
4
Relay open (not inverted)
5
Relay closed (inverted)
6
Relay open (inverted)
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