Grundfos CRE Series User Manual

Terminal Type Function
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
6.10 Signal relays
The motor has two outputs for potential-free signals via two internal relays. You can set the signal outputs to
Operation, Pump running, Ready, Alarm and Warning.
The functions of the two signal relays appear from the table below:
Grundfos Eye is off
The power is off.
Operation Pump running Ready Alarm Warning Operating mode
NCNOC
NCNOC
NCNOC
NCNOC
NCNOC
-
Grundfos Eye is rotating green
The pump runs in Normal mode in open or closed loop.
Operation
Pump running Ready Alarm Warning Operating mode
C NCNO
C NCNO
C NCNO
NCNOC
NCNOC
Normal
Min.
or
Max.
Grundfos Eye is rotating green
The pump runs in Manual mode.
Operation
Pump running Ready Alarm Warning Operating mode
C NCNO
C NCNO
NCNOC
NCNOC
NCNOC
Manual
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English (GB)

Grundfos CRE Series Specifications

General

Motor Type	Asynchronous
Enclosure Class	IP55
Insulation Class	F
Series	CRE
Protection Class	IP55
Material	Stainless Steel
Applications	Water Supply, Pressure Boosting, Irrigation
Pumped liquid	Clean liquids
Approvals	CE
Voltage	380-415V
Connection Size	DN 32 to DN 100
Efficiency	IE3 Premium Efficiency
Power Supply	3-phase
Liquid Temperature Range	-10°C to +120°C
Temperature Range	-10°C to +120°C