The following settings can be made using a screwdriver on the front panel of the device:
• Tripping value
• Sensor type
• Measuring range
• Hysteresis
• Overshoot / undershoot
See Chapter Operator controls and display elements, settings, measuring ranges (Page 21).
Power supply:
The devices are operated with a control voltage of between 24 V AC/DC and 240 V AC/DC,
depending on the version.
4.3 Performance characteristics
Table 4-1 Performance features of analog device 3RS2500
Adjustable Yes
Connectable sensor type
• Thermocouple
• Resistance sensor (two-wire and three-wire measurement)
Resistance sensors (see also Resistance sensors
(Page 69))
Pt100
Thermocouples (see also Thermocouples
(Page 67))
• Type J
• Type K
Number of sensors that can be monitored 1
Adjustable hysteresis values 5%, 10%, 15%, 20%
Number of adjustable limit values 1
Adjustable trip delay No
Adjustable monitoring Overshoot / undershoot
Restart Auto
Unit °C
4.4 Connection systems
The devices can be supplied with the connection systems detailed below:
• Screw terminals
• Spring-type terminals (push-in)
Analog devices
4.4 Connection systems
3RS2 temperature monitoring relay
18 Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002
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