● Use the RWF55 as a compact 3-point stepper controller with no
adjustment level feedback, or as a fixed regulator with analog outputs.
It can be switched with a 2-point regulator external switch that controls
the 2-stage burner. The installed thermostat function turns the burner on
and off.
● Standards & Certifications:
● Digital PID regulator
● The regulator that controls the 2-stage burner can be switched to a 2-point regulator
● Automatic thermostat (or pressure detector) function under low load operation
● Setpoint control sensor for weather decision
● Minimum and maximum limiters for boiler temperature or pressure
● Potential-free, configurable contacts
● Manual operation mode
● Auto-adjust function
● Parameter setting and visual management through USB interface and PC software ACS411
● Communication via batch Modbus interface or optional Profibus interface
● Ramp function (cold start/thermal shock protection)
● Heating/cooling
● Power supply AC 110... 240V +10/-15% 48... 63Hz
● Electrical safety in accordance with DIN EN 60730, Part 1
Overvoltage Category III.
Pollution level 2
● Power consumption: 20VA max
● Tightening torque 0.5Nm
● Emission Interference Level B
● Anti-interference industry requirements
● Degree of protection according to DIN EN 60529
IP66 on the front
IP20 on the back
● Operating environment Operating standard DIN EN 60721-3-3
Climatic conditions Grade 3K3
Mechanical Condition: Class 3M3
Temperature range -20...+50°C
Humidity <95%r.F.