17
when the controller is powered from the mains or from a 24VAC source.
The E30 must always be powered from the same source as the supply to
the external switch. The supply to the remote switch on the E30-12 (low
voltage DC model) must be taken from the supply positive terminal. In all
cases the external switch return wire must be connected to the Remote
input terminal on the E30. The Supply to the external switch will range
from 12 to 24 VDC or from 20 to 35V AC depending on the supply voltage.
WARNING:
Never connect an external power source of any kind to
the E30’s remote input terminal.
The remote switch can be installed some distance from the E30. The
maximum distance is limited by cable resistance and capacitance. The
total cable resistance must not exceed 5K Ohms with the remote switch
closed. The total capacitance of the cable must not exceed 25nF with the
remote switch open. Wires to the remote switch should be run separately
from power carrying cables. Do not run the remote switch wires in a conduit
that also contains power cables. Capacitive coupling between the adjacent
cables may cause false triggering of the E30’s remote input. For cable
runs longer than 150 metres we suggest using 2 separate wires to reduce
capacitive coupling between the adjacent wires. When set up this way
cable resistance becomes the limiting factor for distance. The table sets
out the resistance of typical copper wire of various diameters.
Note that the cable resistance refers to the total resistance out to the
remote switch and back, as measured at the controller across the 2 remote
connection wires with the external remote switch closed.
Summary of Contents for E30
Page 11: ...11 74mm 60mm 4 X 6mm Holes TOP WALL BRACKET DRILL PATTERN...
Page 19: ...19 WIRING DIAGRAMS PLUG PLAY CONNECTIONS CONNECTIONS FOR A SINGLE PHASE PUMP...
Page 20: ...20 LOW VOLTAGE AC SUPPLY WITH REMOTE INPUT CONNECT AN EXTERNAL ALARM...
Page 21: ...21 TWO SINGLE PHASE PUMPS WITH A REMOTE INPUT LOW VOLTAGE DC SUPPLY REMOTE INPUT...