RWF55 Temperature Controller
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RWF55 Temperature Controller
The RWF50/55 are used primarily for the control of temperature or pressure in boilers. Whether used independently or as part of an entire Siemens combustion control system, RWF5 units optimize temperature or pressure control on modulating burners.
Features
RWF50.20A9 is a universal controller with 3-position output, thermal shock protection
Same as RWF50.20A9 with analog output
Same as RWF50.30A9 with Modbus, setpoint changeover, setpoint shifting, outdoor air reset and limit comparator
Same as RWF55.50A9 plus Profibus-DP interface
Specification
| Input Voltage | 110-240 VAC (+10/-15%), 48-63 Hz |
| Power Consumption | Max 20 VA |
| Operating Temperature | -20 to 50 °C, -4 to 122 °F |
| Enclosure Rating | IP66 keypad display, rel. humidity <95% (non-condensing) |
| Aux. DC Power Output | 24 VDC, 30 mA |
| Output Relay Contact Rating | 24-240 VAC, 2 A max |
| Analog Output Rating | 0-10 VDC (500 Ω load min), 0-20 mA or 4-20 mA (500 Ω load max) |
| Modbus RTU Port | Configurable baud rate (4800, 9600, 19200, 38400) Address 1-254 |
| Size | 1/8 DIN, 122 mm mounting depth |
| Data Storage | Non-volatile EEPROM |
| Approvals | UL, CSA, CE |
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