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– Control of an inlet tank valve (with corresponding system configuration)
– Inlet tank level control (with corresponding system configuration)
– Energy-saving operation
– Dynamic pressure setpoint compensation
– Control of base load pump(s)
– Control of jockey pump and base load pump(s)
Monitoring
Monitoring of external conditions via digital and analog inputs
The following monitoring functions can be used:
– General fault (warning and alert)
– Thermal monitoring of pump motors
– Sensor fault/broken wire
– Fault/warning per pump
– Monitoring of service interval
– Dry running detection via pressure switch, pressure sensor or flow monitor
– Operational availability, indicated via LEDs and display
– Level monitoring
– Fire alert recognition (with corresponding system configuration)
– Monitoring of the inlet tank valve (with corresponding system configuration)
– Dry running protection
– Leakage detection
– External stop
– Monitoring of the water temperature or ambient temperature
Communication
Communication with field bus systems via the following interfaces:
– Modbus RTU– RS485
– Profibus DP (optional)
– Bacnet MSTP (optional)
Bus communication is possible with frequency inverters of the following manufacturers:
– DP Var+ / DP Var
– Danfoss Microdrive FC 51
– Danfoss Aquadrive FC 202
– Danfoss Mididrive FC280
4.6 Technical data
Table 6:
Technical data
Characteristic
Value
dp-control
III
III+
Power supply
Rated voltage
24 V AC (min. -10 %, max. +20 %)
✘
✘
Maximum fuse size
0.5 A
✘
✘
Mains frequency
50/60 Hz (min. 49 Hz, max. 61 Hz)
✘
✘
Insulation voltage
500 V AC
✘
✘
Max. input current
850 mA
✘
✘
Max. power
20 W (36 VA)
✘
✘
Ambient conditions
Operating temperature
0 °C to +60 °C
✘
✘
