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Accessible without a password. Contains basic parameters like setpoints, ramp functions, and display configurations.
: Setpoints can be adjusted locally on the unit or via an external signal. It also supports weather-dependent setpoint shifting when paired with an outside sensor (like the Siemens QAC22 Technical Specifications & Build RWF40... Compact Universal Controllers
AC 110V to 240V (+10% / -15%), 48...63Hz (Standard variants) Power Consumption: Approx. 5 VA Sampling Time: 210 milliseconds
Write down your final configuration numbers on a sheet inside the electrical panel. If a unit needs replacement, manual programming takes under 5 minutes. siemens rwf40 manual
Install an external 2A slow-blow fuse on the power supply line to protect the internal circuitry.
The RWF40 operation manual (CC1B7865ru) details the hierarchical structure of the parameter settings:
Install external fuses to protect the relay contacts from overcurrent conditions. 4. Parameter Configuration and Levels Accessible without a password
Cause: Incorrect line compensation resistance for 2-wire Pt100 sensors.
The Siemens RWF40 includes an automatic self-tuning function. This software feature analyzes the controlled system's response to establish the ideal PID parameters automatically. How to Activate Self-Tuning Ensure the plant is cold or well below the target setpoint.
Solution: Adjust the sensor correction parameter ( OFFS ) in the configuration menu to balance out lead wire resistance. If a unit needs replacement, manual programming takes
Caution: Do not use self-tuning if your industrial loop cannot tolerate minor process fluctuations or momentary overshoots during the tuning cycle. 6. Troubleshooting and Error Codes
: Comprehensive instructions for commissioning, setting parameters, and troubleshooting software versions 126.01.02 and 126.02.01.