Terminal Type Function
23 GND Protective earth.
25 GDS TX Grundfos Digital Sensor output.
24 GDS RX Grundfos Digital Sensor input.
7 AI2
Analog input:
0-20 mA or 4-20 mA.
0.5 - 3.5 V, 0-5 V or 0-10 V.
Related information
4.2.4 Connecting an external switch
4.2.7.3 Advanced functional module, FM 300
Inputs and outputs
The module has 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
• LiqTec sensor inputs
• two signal relay outputs
• GENIbus connection.
The 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 with protective extra-low voltage (PELV), ensuring protection against electric shock.
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.
Connection terminals for the mains supply
Phases
Terminals
Single-phase N, PE, L
Three-phase L1, L2, L3, PE
Connection terminals for inputs and outputs
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.
20
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