Appendix

12.4 Technical data

Inputs

7 configurable inputs for sensors (Pt 100 and PTC or

 

 

Pt 100 and Pt 1000 or Pt 100 and NTC) or binary alarms

 

Sensor inputs

 

1 outdoor temperature input for sensor or current signal 4 (0) to 20 mA

 

 

 

 

1 flow temperature sensor input

 

Binary inputs

BE1 optionally for releasing a control circuit or external demand

 

 

BE5 configurable for storage tank thermostat

 

Other inputs

Pulse or current input for capacity or flow rate limitation

 

 

Remote control to correct the room temperature and select the operating mode

 

 

Alternatively, potentiometer input 1 to 2 kΩ or configurable for binary alarm

Outputs

Three-step signals: Load 250 V AC, max. 2 A, min. 10 mA

 

Control signal outputs

On-off signals: Load 250 V AC, max. 2 A, min. 10 mA

 

 

Varistor suppression 300 V

 

Binary outputs

Max. 4 outputs to control pumps,

 

 

load 250 V AC, max. 2 A, min. 10 mA, varistor suppression 300 V

 

 

2 reed relay outputs for controlling the speed of a circulation pump or for

 

 

fault indication, load max. 24 V, 100 mA

 

 

 

Interfaces

Serial RS-485 interface for connection to four-wire bus, protocol: Modbus

 

 

RTU, data format 8N1or serial RS-232-C interface for connection to a

 

 

modem; connection over RJ-12 jack

 

 

Option: Meter bus interface

Operating voltage

230 V AC (+ 10 %/–15 %), 48 to 62 Hz

 

 

Power supply failure: All parameter settings and configuration data are

 

 

stored in an EEPROM in the case of power failure

Power consumption

Approx. 3 VA

Temperature range

Operation: 0 to 40 °C (avoid long periods of heat) Storage: –20 to 60 °C

Degree and class of

IP 40 according to IEC 529 and II according to VDE 0106

protection

 

Degree of contamination

2 according to VDE 0110

Overvoltage category

II according to VDE 0110

Humidity rating

F according to VDE 40040

Noise immunity

According to EN 61000-6-1

Noise emission

According to EN 61000-6-3

Weight

Approx. 0.6 kg

 

 

 

EB 5476 EN 99

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Samson 5476 manual Technical data

5476 specifications

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