Circuit diagrams
10
10.1 Using the 3RS25 analog device to implement a simple 2-step
controller
Example of wiring: Two-step heating control
The 3S25 analog device can be used to implement a simple two-step controller.
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Figure 10-1 Simple two-step heating control
Terminals:
• Supply voltage: A1, A2
• Resistance sensors: T1, T2, T3
• Thermocouples: T+, T-
• Output/actuator: 14 N0, 11 C (change-over contact's NO contact)
• Signaling output: 12 NC, 11 C (change-over contact's NC contact)
Operating principle:
If the temperature set on the device is undershot, the output relay connects the heating.
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002 71
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