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Description
The Alfa 51-RTDN is a compact three stage thermostat for panel mounting with a neutral zone and a day/night setpoint. It is possible to program different switching times for week days and weekend days. Switching from the day setpoint to the night setpoint is done by an internal real time clock.
The Alfa 51-RTDN has a default program with the function cooling/heating and a minimum/maximum temperature alarm. The thermostat can also be programmed with the function three stage cooling and three stage heating.
The Alfa 51-RTDN has a range of -50/+50°C or 0/+100°C. Temperatures above -10°C can be read-out per 0,1°C.
The Alfanet 51-RTDN has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 51-RTDN does not have this network connection.
The Alfa 51-RTDN is supplied directly with 230Vac. Other supply voltages are possible on request.
As an option a second temperature sensor can be connected, so that the temperature control can be based on the average of the two sensors.
The Alfa 51-RTDN has a default program with the function cooling/heating and a minimum/maximum temperature alarm. The thermostat can also be programmed with the function three stage cooling and three stage heating.
The Alfa 51-RTDN has a range of -50/+50°C or 0/+100°C. Temperatures above -10°C can be read-out per 0,1°C.
The Alfanet 51-RTDN has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 51-RTDN does not have this network connection.
The Alfa 51-RTDN is supplied directly with 230Vac. Other supply voltages are possible on request.
As an option a second temperature sensor can be connected, so that the temperature control can be based on the average of the two sensors.
Alfanet 51 RTDN
Price on Request
Serienummer: 904.000832
Technical specifications
Type:
Alfanet 51
Housing:
Grey ABS plastic
Dimensions:
71 x 90 x 58 mm (hwd)
Front:
Polyester
Front connection:
Screw terminals on the side
Power input:
230 Vac, 50/60 Hz, (-10/+5%)
Measure range:
-50/+50°C
Controls:
By push buttons on the front
Sensor:
SM 811 (PTC sensor; 1000 Ohm at 25°C) (not included) Option for second sensor
Relay:
Cooling SPST contact 250V/5A (NO) Heating SPST contact 250V/5A (NO) alarm SPDT contact 250V/5A (NO/NC) (all relays one common, not inductive)
Accuracy:
± 0.5% of the range
Network:
RS-485 Network Alfanet
Series:
Alfanet 51
Functions:
Cooling, heating, alarm relay
Number of sensors:
2
Voltage:
230 V
Housing:
Din-rail
Description
The Alfa 51-RTDN is a compact three stage thermostat for panel mounting with a neutral zone and a day/night setpoint. It is possible to program different switching times for week days and weekend days. Switching from the day setpoint to the night setpoint is done by an internal real time clock.
The Alfa 51-RTDN has a default program with the function cooling/heating and a minimum/maximum temperature alarm. The thermostat can also be programmed with the function three stage cooling and three stage heating.
The Alfa 51-RTDN has a range of -50/+50°C or 0/+100°C. Temperatures above -10°C can be read-out per 0,1°C.
The Alfanet 51-RTDN has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 51-RTDN does not have this network connection.
The Alfa 51-RTDN is supplied directly with 230Vac. Other supply voltages are possible on request.
As an option a second temperature sensor can be connected, so that the temperature control can be based on the average of the two sensors.
The Alfa 51-RTDN has a default program with the function cooling/heating and a minimum/maximum temperature alarm. The thermostat can also be programmed with the function three stage cooling and three stage heating.
The Alfa 51-RTDN has a range of -50/+50°C or 0/+100°C. Temperatures above -10°C can be read-out per 0,1°C.
The Alfanet 51-RTDN has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 51-RTDN does not have this network connection.
The Alfa 51-RTDN is supplied directly with 230Vac. Other supply voltages are possible on request.
As an option a second temperature sensor can be connected, so that the temperature control can be based on the average of the two sensors.