Grundfos 384-511 Montage- Und Betriebsanleitung Seite 10

7.1 General data
Ambient and operating conditions
• Permissible ambient temperature:
0 °C to +55 °C.
• Permissible air humidity: max. relative humidity:
70 % at 40 °C, 90 % at 35 °C.
Housing
• Materials:
– Housing: Die-cast zinc
– Hood: Corrosion-resistant die-cast aluminium,
painted with a silicone-free structured lacquer
• Colour: Black
• Degree of protection in acc. with DIN EN 60529:
IP65
Power supply
• 220-240 V ± 10 %, 50/60 Hz ± 5 %, 100 % on
time (standard)
• 110-120 V ± 10 %, 50/60 Hz ± 5 %
• 24 VAC ± 10 %, 50/60 Hz ± 5 %
• Insulation class B in acc. with VDE 0530
Adjustment angle
• 270 °
Power consumption
• Max. 2 VA
Actuating time
• 90 seconds (50 Hz), 75 seconds (60 Hz) for DMH
pumps
• > 90 seconds for DMX 221 and DMX 226 pumps.
The exact actuating time cannot be specified for
DMX pumps, as it will depend on the technical
properties of the pump in question.
Weight
• Approximately 2.6 kg
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7.1.1 Servomotor with reversing potentiometer
Control variant
• Open/close signal
• Reversing potentiometer 1 kΩ
7.1.2 Servomotor with analogue control
Control variant
• Analogue control
• Input/output
– 4-20 mA (standard setting)
– 0-20 mA (switchable)
• With service switch for manual adjustments
Setpoint input
• 4 (0) - 20 mA (DC)
Load 250 Ω
•
• Overload protection 25 mA
• Protection against reverse polarity to -25 mA
• ESD protection, input filter
• Resolution: 10 bits
Actual value output
• Fixed limits: 0-20 mA or 4-20 mA
Current sink: Max. load 500 Ω
•
• Resolution: 10 bits
Service switch
• Max. switching capacity 10(3) A, 250 VAC