Grundfos CRE Series Installation And Operating Instruction

7.11 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
Grundfos Eye is permanently green
The pump is ready for operation but is not running.
Operation
Pump running Ready Alarm Warning Operating mode
NCNOC
NCNOC
C NCNO
NCNOC
NCNOC
Stop
Grundfos Eye is rotating yellow
Warning, but the pump is running.
Operation
Pump running Ready Alarm Warning Operating mode
C NCNO
C NCNO
C NCNO
NCNOC
C NCNO
Normal
Min.
or
Max.
18
English (US)

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