Technical Data - Grundfos MB 40/60 Montageanleitung

3. Fitting the module
Never make any connections in the pump terminal box unless the
electricity supply has been switched off for at least 5 minutes.
To fit a module, remove the existing terminal box cover and fit the new cover
incorporating the module. Do not forget to remove the label.
The new cover increases the height of the terminal box by approx. 27 mm.
See fig. 2 and the figure at the end of these instructions.
Fig. 2

4. Technical data

Start/stop input
Max. curve input
Min. curve input
Bus input
8
External potential-free switch.
Contact load: 5 VDC, 0.1 mA.
Screened cable.
Loop resistance: Maximum 130 Ω/km.
Logical levels:
Logical zero: U < 1.5 V.
Logical one: U > 4.0 V.
GRUNDFOS GENIbus protocol, RS-485.
Screened cable.
Lead cross section: 0.25 - 1 mm².
Cable length: Maximum 1200 m.
Subject to alterations.