Grundfos CIU 501 Instructions

English (GB)
10
6. Modbus GSM/GPRS, CIM 250 setup
Fig. 12 CIM 250 GSM module (top-side view)
6.1 Installation
6.1.1 Fitting a GSM antenna
An antenna must be connected to the CIM 250 to establish
connection to the GSM network.
External antenna
Connect the antenna cable to the SMA connection (pos. 1) of the
CIM 250. The antenna must be installed outside the control
cabinet in a position with good reception conditions.
Fig. 13 Fitting an external GSM antenna
TM04 2642 1210
Pos. Designation Description
1 Battery socket
2 SIM card holder
3 SMA connection for GSM antenna
4LED1
Yellow/green status LED for GSM/
GPRS communication
5LED2
Red/green status LED for internal
communication between the CIU 250
and pump
6SW1
Reset button.
Keep the button pressed for 5 seconds
to return to default settings.
1
23 45
6
Note
Before installation, make sure that the power
supply has been switched off and that it cannot
be accidentally switched on.
Note
If the CIU 250 is installed in a metal control
cabinet, Grundfos recommends fitting an
external GSM antenna.
Grundfos offers different kinds of antennas.
No antenna is supplied with the CIU 250. It must
be ordered separately.
TM04 2644 2808
Pos. Description
1 SMA connection for GSM antenna
2 Antenna cable for external GSM antenna
1
2

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English