Grundfos CU 301 Instrucciones De Instalación Y Operación página 7

Sensor signals:
The sensor to be connected must give signals
within one of the following ranges:
• 0-10 V
• 2-10 V
• 0-20 mA
• 4-20 mA, factory default.
Changeover between current and voltage signals
is carried out by means of Grundfos GO Remote.
Operating relay
RELAY, terminals 8 and 9:
Terminals 8 and 9 (RELAY) are used for the
connection of an external signal transmitter
(sound or light).
The operating relay is a normally open (NO)
contact when the pump is not running, and closes
while the pump is running.
• Maximum current: 0.5 A
• Maximum voltage: 230 VAC.
POWER PUMP
PE
PE
Electrical connection of the operating relay
Related information
6.3.11 Number
3.3 Positioning the pressure sensor
Pressure losses often cause inconvenience to the
user. CU 301 keeps the pressure constant in the
place where the pressure sensor is positioned.
Pressure sensor position
Pos.
1
relpol
RM85-3021-25-102 4
DC 24 V
AC 250 V 1 6 A
8 5
7 4
2
1 2
MADE IN POLAN D
4080
3
We recommend that the pressure sensor is
positioned as close to the places of consumption
as possible.
Related information
relpol
8.1 Troubleshooting with Grundfos GO Remote
RM85-3021-25-102 4
DC 24 V
AC 250 V 1 6 A
8 5
7 4
1 2
MADE IN POLAN D
4080
CU 301
3
1
Description
Tap 1
Tap 2
Pressure sensor
2
7