Terminal Type Function
C2 Common
NO Normally open contact
RJ45 Ethernet Ethernet communication
GND GND Signal ground
DI3 DI3/OC1
Digital input/output, configurable
Open collector: Maximum 24 V resistive or inductive
24V +24 V Power supply
AI2 AI2
Analog input:
• 0-20 mA or 4-20 mA
• 0.5 - 3.5 V, 0-5 V or 0-10 V.
5V +5 V Power supply to a potentiometer or sensor
GND GND Signal ground
TX GDS TX Grundfos Digital Sensor output
RX GDS RX Grundfos Digital Sensor input
GND GND Signal ground
DI4 DI4/OC2
Digital input/output, configurable
Open collector: Maximum 24 V resistive or inductive
PT2 Pt100/1000 input 2 Pt100/1000 sensor input 2
PT1 Pt100/1000 input 1 Pt100/1000 sensor input 1
LT1 LiqTec sensor input 1
LiqTec sensor input 1
White conductor
GND GND
Signal ground
Brown and black conductors
LT2 LiqTec sensor input 2
LiqTec sensor input 2
Blue conductor
5V +5 V Power supply to a potentiometer or sensor
A GENIbus, A GENIbus, A (+) / Modbus, D1 (+)
Y GENIbus, Y GENIbus, GND / Modbus, GND
B GENIbus, B GENIbus, B (-) / Modbus, D0 (-)
AI1 AI1
Analog input:
• 0-20 mA or 4-20 mA
• 0.5 - 3.5 V, 0-5 V or 0-10 V.
DI1 DI1
Digital input, configurable
Digital input 1 is factory-set to be start or stop input where
an open circuit results in stop. A jumper has been factory-
fitted between terminals DI1 and GND. Remove the jumper
if digital input 1 is to be used as external start or stop or any
other external function.
24V +24 V Power supply
GND GND Signal ground
AO1 AO
Analog output:
• 0-20 mA or 4-20 mA
• 0-10 V.
GND GND Signal ground
AI3 AI3
Analog input:
• 0-20 mA or 4-20 mA
• 0.5 - 3.5 V, 0-5 V or 0-10 V.
DI2 DI2 Digital input, configurable
S24 +24 V (STO) Power supply to the Safe Torque Off inputs
ST1 STO1 Safe Torque Off - Input 1
ST2 STO2 Safe Torque Off - Input 2
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