Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual page 11

6.7.2 Connection terminals, CME pumps
The CME pump has these connections:
• two analog inputs
• two digital inputs or one digital input and one open-collector
output
• Grundfos Digital Sensor input and output
• two signal relay outputs
• GENIbus connection.
See fig. 14.
Digital input 1 is factory-set to be the start-stop input
when 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
mains-conducting parts by reinforced insulation and galvanically
separated from other circuits. All control terminals are supplied by
protective extra-low voltage (PELV) to ensure protection against
electric shock.
• Signal relay outputs
– Signal relay 1:
LIVE:
You can connect supply voltages up to 250 VAC to the
output.
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.
• Mains supply (terminals N, PE, L or L1, L2, L3, PE).
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