Grundfos CRE User Manual

3
15
8
26
23
25
24
7
21
20
22
B
Y
6
5
2
4
10
A
+24 V*
1
14
9
12
17
19
11
18
+24 V*
+
+24 V*
OC
DI
+24 V*/5 V*
+24 V*
+
+
+
+24 V*/5 V*
+24 V*
+24 V*
+
+
+24 V*/5 V*
+24 V*
+5 V*
AI2
GDS RX
GDS TX
GND
GENIbus A
GENIbus B
+5 V
+24 V
+24 V
GND
GENIbus Y
GND
+5 V
DI1
AI1
DI3/OC1
LiqTec
AI3
GND
DI2
LiqTec
GND
AO
Pt100/1000
Pt100/1000
DI4/OC2
GND
+24 V*
OC
DI
GND
NC
C2
NO
NC
C1
NO
+5 V*
TM053509
* If you use an external supply source, there must be a connection
to GND.
Connection terminals, CRE, CRIE, CRNE, CRKE, SPKE, MTRE
and CME pumps
Terminal Type Function
NC
Normally closed
contact
Signal relay 1
(LIVE or PELV)
C1 Common
NO Normally open contact
NC
Normally closed
contact
Signal relay 2
(PELV only)
C2 Common
NO Normally open contact
Terminal Type Function
18 GND Ground
110.5 -
3.5 V /
0-5 V /
0-10 V
DI4/OC2
Digital input/output,
configurable.
Open collector: Max. 24 V
resistive or inductive.
19 Pt100/1000 input 2 Pt100/1000 sensor input
17 Pt100/1000 input 1 Pt100/1000 sensor input
12 AO
Analog output:
0-20 mA / 4-20 mA
0-10 V
9 GND Ground
14 AI3
Analog input:
0-20 mA / 4-20 mA
0-10 V
1 DI2 Digital input, configurable
21 LiqTec sensor input 1
LiqTec sensor input
(white conductor)
20 GND
Ground (brown and black
conductors)
22 LiqTec sensor input 2
LiqTec sensor input
(blue conductor)
10 DI3/OC1
Digital input/output,
configurable.
Open collector: Max. 24 V
resistive or inductive.
4 AI1
Analog input:
0-20 mA / 4-20 mA
0.5 - 3.5 V / 0-5 V / 0-10 V
2 DI1 Digital input, configurable
5 +5 V
Supply to potentiometer and
sensor
6 GND Ground
A GENIbus, A GENIbus, A (+)
Y GENIbus, Y GENIbus, GND
B GENIbus, B GENIbus, B (-)
3 GND Ground
15 +24 V Supply
8 +24 V Supply
26 +5 V
Supply to potentiometer and
sensor
23 GND Ground
25 GDS TX Grundfos Digital Sensor output
24 GDS RX Grundfos Digital Sensor input
7 AI2
Analog input:
0-20 mA / 4-20 mA
0.5 - 3.5 V / 0-5 V / 0-10 V
Connection terminals, CME pumps manufactured prior to
October 1, 2017
This information is optional for CRE, CRIE, CRNE, CME, SPKE and
MTRE pumps.
CME pumps manufactured before October 1, 2017 have these
connections:
16
English (US)

Grundfos CRE Specifications

General

Protection Class	IP55
Material	Stainless Steel
Applications	Water supply, pressure boosting, irrigation
Impeller Material	Stainless Steel
Pump Housing Material	Stainless Steel
Connection Size	DN32 to DN200 (depending on model)
Power Supply	3-phase
Control	Integrated frequency converter