Grundfos CRE Series Installation And Operating Instruction page 17

Terminal
C2
NO
RJ45
GND
DI3
24V
AI2
5V
GND
TX
RX
GND
DI4
PT2
PT1
LT1
GND
LT2
5V
A
Y
B
AI1
DI1
24V
GND
AO1
GND
AI3
DI2
S24
ST1
ST2
Type
Common
Normally open contact
Ethernet
GND
DI3/OC1
+24 V
AI2
+5 V
GND
GDS TX
GDS RX
GND
DI4/OC2
Pt100/1000 input 2
Pt100/1000 input 1
LiqTec sensor input 1
GND
LiqTec sensor input 2
+5 V
GENIbus, A
GENIbus, Y
GENIbus, B
AI1
DI1
+24 V
GND
AO
GND
AI3
DI2
+24 V (STO)
STO1
STO2
Function
Ethernet communication
Signal ground
Digital input/output, configurable
Open collector: Maximum 24 V resistive or inductive
Power supply
Analog input:
• 0-20 mA or 4-20 mA
• 0.5 - 3.5 V, 0-5 V or 0-10 V.
Power supply to a potentiometer or sensor
Signal ground
Grundfos Digital Sensor output
Grundfos Digital Sensor input
Signal ground
Digital input/output, configurable
Open collector: Maximum 24 V resistive or inductive
Pt100/1000 sensor input 2
Pt100/1000 sensor input 1
LiqTec sensor input 1
White conductor
Signal ground
Brown and black conductors
LiqTec sensor input 2
Blue conductor
Power supply to a potentiometer or sensor
GENIbus, A (+) / Modbus, D1 (+)
GENIbus, GND / Modbus, GND
GENIbus, B (-) / Modbus, D0 (-)
Analog input:
• 0-20 mA or 4-20 mA
• 0.5 - 3.5 V, 0-5 V or 0-10 V.
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.
Power supply
Signal ground
Analog output:
• 0-20 mA or 4-20 mA
• 0-10 V.
Signal ground
Analog input:
• 0-20 mA or 4-20 mA
• 0.5 - 3.5 V, 0-5 V or 0-10 V.
Digital input, configurable
Power supply to the Safe Torque Off inputs
Safe Torque Off - Input 1
Safe Torque Off - Input 2
17