Grundfos Magna - Signal Relay Operation and Diagrams; Ready and Operation Status; Signal Relay Functional Diagrams

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8. Technical data
Inputs for max. and min.
curves
External potential-free switch.
Contact load: 5 V, 1 mA.
Screened cable.
Loop resistance: Maximum 130 Ω.
Input for analog 0-10 V
signal
External signal: 0-10 VDC.
Maximum load: 1 mA.
Screened cable.
Input for control of twin-head
pumps
Screened cable.
Wire cross section: 0.25 - 1 mm².
Cable length: Maximum 1 m.
Bus input
Grundfos bus protocol, GENIbus protocol,
RS-485.
Screened cable.
Wire cross section: 0.25 - 1 mm².
Cable length: Maximum 1200 m.