Siemens RWF 50.2, Инструкции по установке, использованию и обслуживанию, Страница: 59 / 72

12.2 Monitoring the measuring circuit
In the event of error, the outputs assume defined states (configurable).
Measuring
transducer Measured value
crossed limit Sensor/line has
short-circuit Sensor/line
interrupted
Resistance
thermometer
● ● ●
Voltage 1...5 V
● ● ●
0...5 V, 0...10 V
( ● ) --- ---
Current 4...20 mA
● ● ●
0...20 mA
( ● ) --- ---
●
= detected
( ● )
= detected only if measuring range is exceeded
-
= not detected
12.3 Controller outputs
OutP
Controller o
Relay K1 (NO) 1P, 1N
(burner release)
Contact rating Max. 1 A at AC 250 V at cos φ >0.6
Contact life 100,000 switching cycles at high-fire
Contact protection Varistor
Power supply for transducer G+, G-
DC 24 V

10%/max. 25 mA short-circuit-
proof
The following relay data are those specified by the supplier.
Relay K2, KQ
(controlling element OPEN)
Contact rating Max. 1 A at AC 250 V and cos φ >0.6
Contact life 100,000 switching cycles at high-fire
Contact protection RC combination
Relay K3, KQ
(controlling element CLOSE)
Contact rating Max. 1 A at AC 250 V at cos φ >0.6
Contact life 100,000 switching cycles at high-fire
Contact protection RC unit
Relay data are those specified by the supplier.
Analog output A+, A-
Voltage DC 0...10 V short-circuit-proof
Load resistance R
Last
≥ 500

Accuracy

0.25%,

50 ppm/K
Current 0...20 mA/4...20 mA
Load resistance R
Last

500

Accuracy

0.25%,

50 ppm/K
12.4 Controller
Type of controller
- RWF50.2 Modulating controller
- RWF50.3 Continuous controller
Controller structure P/PI/PD/PID
Sampling time 250 ms
Only RWF50.2
Only RWF50.3
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