Grundfos LCSE Installation And Operating Instructions Manual page 9

4.2.5 Connection terminals
The descriptions and terminal overviews in this section apply to
both single- and three-phase motors.
For maximum torques, see section Torques, page 64.
Connection terminals, LCSE and VLSE
LCSE and VLSE pumps have a number of inputs and outputs
enabling the pumps to be used in advanced applications where
many inputs and outputs are required.
The pumps have these connections:
• three analog inputs
• one analog output
• two dedicated digital inputs
• two configurable digital inputs or open-collector outputs
• Grundfos Digital Sensor input and output
• two Pt100/1000 inputs
• two LiqTec sensor inputs
• two signal relay outputs
• GENIbus connection.
See fig. 8.
Digital input 1 is factory-set to be start-stop input
where open circuit results in stop. A jumper has been
factory-fitted between terminals 2 and 6. Remove the
jumper if digital input 1 is to be used as external
start-stop or any other external function.
DANGER
Electric shock
Death or serious personal injury
- Make sure that the wires to be connected to the
connection groups below are separated from each
other by reinforced insulation in their entire
lengths.
• Inputs and outputs
All inputs and outputs are internally separated from the power
supply-conducting parts by reinforced insulation and galvanically
separated from other circuits. All control terminals are supplied by
protective extra-low voltage (PELV), thus ensuring protection
against electric shock.
• Start-stop: (Digital input 1) = Terminals 2 and 6
• Pressure sensor: (Analog input 1) = Terminals 4 and 8
• Pressure switch: (Digital input 3) = Terminals 6 and 10
• External analog signal input: (Analog input 2) = Terminals 7
and 23
• GENIbus Terminals A, Y and B
• Signal relay outputs
– Signal relay 1:
LIVE:
You can connect supply voltages up to 250 VAC.
PELV:
The output is galvanically separated from other circuits.
Therefore, you can connect the supply voltage or protective
extra-low voltage to the output as desired.
– Signal relay 2:
PELV:
The output is galvanically separated from other circuits.
Therefore, you can connect the supply voltage or protective
extra-low voltage to the output as desired.
• Power supply (terminals N, PE, L or L1, L2, L3, PE).
9