English (GB)
5
3. System description
The system diagrams provide an overview of the different
technologies and how to connect CIU XX2 to the Grundfos
AUTO
ADAPT
pump, that you connect to a Modbus network.
The CIU XX2 unit is a communication interface in a system
consisting of up to four Grundfos DP, EF, SL1, SLV or SEG
AUTO
ADAPT
wastewater pumps installed in one or more pump
pits. The pumps connect to CIU XX2 running communication over
a separate pair of wires.
Each pump has an integrated pressure sensor that enables it to
monitor the water level in the pump pit according to a common
reference level and an intermittent operation scheme. By
monitoring the water level, the pump obtains enough information
to know when to start and stop pumping.
The CIU XX2 unit is not involved in the control of the water level,
starting and stopping of pumps, but merely provides the interface
necessary for the following:
• Configuration of the pump parameters required for the level
control.
• Online monitoring of pit and pump values.
• Individual, manual, control of each pump (forced start
andstop).
• Obtaining of measured and logged data that are valuable for
pump service and pit optimisation.
• CIU XX2 can communicate with Grundfos GO Remote. This is
not shown in the pictures and is not discussed further in this
manual.
3.1 CIM 200 Modbus
Communication can be established by using the Modbus RTU
connection in CIU 202.
Fig. 1
CIU 202* solution for Grundfos DP, EF, SL1, SLV and
SEG AUTO
ADAPT
pumps
* CIU 202 is a combination of a CIU 902 unit and a CIM 200
module.
3.2 CIM 260 Cellular Modbus
You can establish remote communication via CIU 262 by using
one of the following options:
• Modbus RTU protocol via a call-up connection
• Modbus TCP protocol via a data connection
• SMS commands from a mobile phone.
Fig. 2
CIU 262* solution for Grundfos DP, EF, SL1, SLV and
SEG AUTO
ADAPT
pumps
* CIU 262 is a combination of a CIU 902 unit and a CIM 260
module.
3.3 CIM 500 Modbus TCP
You can establish communicationby using the Modbus TCP
ethernet connection in CIU 502*.
Fig. 3
CIU 502* solution for Grundfos DP, EF, SL1, SLV and
SEG AUTO
ADAPT
pumps
* CIU 502 is a combination of a CIU 902 unit and a CIM 500
module.
TM0
4
661
7
0
6
1
0
Sensor inputs
Modbus RTU
CIU 202*
TM
04
69
03
1
11
0
T
M
04
66
17
06
10
Cellular
CIU 262*
Sensor inputs
Sensor inputs
Modbus TCP
CIU 502*
