For the latest online version,
visit Grundfos Product Center
http://net.grundfos.com/qr/i/98490991
Page 2
English (GB) Installation and operating instructions
Caution
Note
English (GB)
Original installation and operating instructions
CONTENTS
Page
1.Symbols used in this document
2.Definitions and abbreviations
3.Applications
4.Product description
5.Installation
5.1 Mechanical installation
5.2 Connecting the data cables
5.3 Electrical connection
5.4 GRM commissioning
6.Operation
6.1 Communication status LEDs
6.2 Ethernet status LEDs
6.3 PLC CPU status LEDs
7.General data
8.Fault finding
9.Parts list
10. Disposal
Warning
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local
regulations and accepted codes of good
practice.
1. Symbols used in this document
Warning
If these instructions are not observed, it
may lead to electric shock with consequent
risk of serious personal injury or death.
If these safety instructions are not
observed, it may result in malfunction or
damage to the equipment.
Notes or instructions that make the job
easier and ensure safe operation.
2. Definitions and abbreviations
APNAccess Point Name
CIUCommunication Interface Unit
2
CIU 850CIU 850 Modbus-GRM-PLC
2
GPRS
2
3
GRMGrundfos Remote Management
4
4
HTTP
4
4
4
LEDLight-emitting diode
5
MicroSD
5
5
Modbus
5
RTU
5
PLCProgrammable Logic Computer
6
PLC CPU Central Processing Unit.
7
7
TCP/IP
3. Applications
The CIU 850 is a gateway for connecting a Modbus
RTU/TCP network to Grundfos Remote
Management.
Grundfos Remote Management
Grundfos Remote Management is a web-based
solution for monitoring and control of networks. It
allows you to access information and control pumps
remotely using an ordinary computer or mobile
device. You must have a contract with Grundfos to
access GRM.
CIU 850 - Modbus RTU/TCP communication
The gateway functions as a Modbus RTU/TCP
master. It can be connected to Modbus RTU slave
devices via a wireless radio or wired (serial)
connection. A radio modem (SATELLINE-3AS or
similar) is required for wireless connection.
It can be connected to Modbus TCP slaves through a
external wireless 3G or 4G router or via an RJ45
connector to the network.
CIU 850 - GRM communication
The CIU 850 communicates with GRM via an HTTP
TCP/IP Ethernet connection. A connection and a
network router with Internet access or a wireless
modem (GPRS or similar) is required.
General Packet Radio Service.
Technology for TCP/IP communication
and mobile Internet access.
Hyper Text Transfer Protocol. The
protocol commonly used to navigate
the World Wide Web.
Micro Secure Digital. A memory card
format.
A serial communications protocol
commonly used in industry and
building automation systems.
Transmission Control Protocol/Internet
Protocol. Protocol for Internet
communication.
2
Page 3
4. Product description
2
5
7
8
17
15
13
14
9
10
11
12
16
1
3
4
6
Fig. 1Front view of the PLC CPU
Pos. DescriptionDesignation
1Status LED of Ethernet port 1LED5
2RJ45 Ethernet port 1DATA1
3Status LED of Ethernet port 1LED6
4Status LED of Ethernet port 2LED7
5RJ45 Ethernet port 2DATA2
6Status LED of Ethernet port 2LED8
79-pin RS-485 serial portDATA3
8Status LED 1 of CIU 850LED1
9Status LED 2 of CIU 850LED2
10 Status LED 3 of CIU 850LED3
11 Status LED 4 of CIU 850LED4
12 Power LED of PLC CPUPWR
Earth connection of the PLC
13
CPU
24 V power supply of the
14
PLC CPU
15 MicroSD card slot 1SD1
16 Status LED of MicroSDHDD1
MicroSD card slot 2. Not
17
used.
GND
PSU
SD2
English (GB)
TM05 8583 2113
3
Page 4
5. Installation
Caution
1
3
2
Caution
Note
English (GB)
If problems occur during installation, see section
8. Fault finding.
5.1 Mechanical installation
The 24 V power supply unit and the PLC
CPU must be mounted on a DIN rail in a
control cabinet.
1. Check that all parts listed in section 9. Parts list
are present.
2. Mount the DIN rail horizontally on a cabinet wall.
Use the two M4 screws with washers for
installation in a metal control cabinet. Use the
two self-tapping screws for wooden or plastic
walls.
3. Mount the PLC CPU on the DIN rail according to
the installation and operating instructions for the
PLC CPU.
4. Slide the PLC extension module onto the PLC
CPU.
5. Check that both the top and bottom rails are
connected and that the module has clicked onto
the DIN rail.
6. Connect the power supply unit to the DIN rail,
next to the PLC CPU. See the installation and
operating instructions of the 24 V power supply
unit. Leave a minimum gap of 5 mm on both
sides of the unit.
5.2 Connecting the data cables
Fig. 2Connecting the data cables
1. Connect the Ethernet cable to a network router or
modem, and to an Ethernet port. Make sure the
network is protected by a firewall.
2. Modbus RTU
Connect the serial cable (RS 485) to the PLC
CPU. If a radio Modbus network exists, use the 9pin to 15-pin serial adapter to connect the serial
cable to your radio modem.
3. Modbus TCP
Connect the network slaves to the other Ethernet
port via a network cable (RJ45) or connect the
3G or 4G router. Setup the Router for closed APN
and power router, a related SIM card with closed
APN is also required for wireless router
communication.
5.3 Electrical connection
Warning
During electrical installation, make sure
that the power supply cannot be
accidentally switched on.
Do not use the 24 V power supply unit for
powering the serial adapter.
The electrical installation must be carried out by an
authorised person in accordance with local
regulations and the relevant wiring diagram.
Fig. 3Connection of the power supply
1. Connect the power supply unit to the PLC CPU
using two wires supplied with the unit. Choose
the colour according to your local regulations.
2. Connect a main supply cable to N, L and earth of
the power supply unit.
3. If the 9-pin to 15-pin serial adapter is used,
connect the red and black conductors to an
additional 24 V power supply unit. The unit is not
supplied with CIU 850.
5.4 GRM commissioning
It may be necessary to map the Modbus
profile via the GRM server, depending on
the Modbus device connected. Contact
Grundfos in case of newly connected
device types.
You must setup the GRM system online before data
TM05 8638 2613
can be transferred.
1. Switch on the power.
2. Check that the LED of the 24 V power supply unit
is on.
3. Check that the LEDs HDD1 and PWR of the PLC
CPU are on and that one of the Ethernet LEDs
(LED5 or LED7) is on or flashing.
4. Contact Grundfos for activation of your GRM
account.
TM05 8745 2613
4
Page 5
6. Operation
Caution
Note
Do not remove or replace the microSD
card while the PLC CPU is switched on.
The USB ports of the PLC CPU cannot be
used for other USB devices.
The CIU 850 transfers data to GRM once the
hardware installation and GRM commissioning have
been completed. If the gateway to GRM could not be
created or is lost, check the status of the LEDs. See
sections 6.1 Communication status LEDs to 6.3 PLC
CPU status LEDs and section 8. Fault finding.
The GRM server monitors the GRM gateway and has
basic knowledge about the status of the ModbusGRM PLC. It also ensures that the GRM gateway
application is aligned with the GRM server and kept
up-to-date.
The CIU 850 software is stored on the microSD card
in slot 1.
6.1 Communication status LEDs
The PLC CPU extension module has four status
LEDs showing the connectivity to the GRM server
and to the Modbus devices. See fig. 1.
LED DescriptionOnOff
Connection to
LED1
GRM
Connection to
LED2
Modbus device
LED3 GRM activityActiveNot active
Connection to
LED4
GRM
Established
once
Established
Connection okConnection
Never
established
Not
established
lost
6.2 Ethernet status LED s
The status LEDs are to the left of both Ethernet
ports. See fig. 1.
LED Description
Link activity,
LED5
Ethernet port 1
Network
LED6
speed,
Ethernet port 1
Link activity,
LED7
Ethernet port 2
Network
LED8
speed,
Ethernet port 2
On or
flashing
ActiveNot active
100 Mbits/s 10 Mbits/s
ActiveNot active
100 Mbits/s 10 Mbits/s
Off
6.3 PLC CPU status LEDs
The PLC CPU has status LEDs on the front. See fig.
1.
LEDDescriptionOnOff
PWRPower supplyActiveNot active
HDD1 MicroSD 1Available Not available
7. General data
Permissible ambient
temperature
Supply voltage [V]100-240 AC
Frequency [Hz]50/60
Dimensions of DIN rail [mm]
(w x h x d)
Dimensions of CIU 850
[mm] (w x h x d) as in fig. 3
Enclosure classIP20
-25 °C - +60 °C
250 x 35 x 7.5
209 x 100 x 111
English (GB)
5
Page 6
8. Fault finding
English (GB)
Fault (LED status)Possible causeRemedy
1. LED "PWR" is on
and LED "HDD1" is
off.
2. The LED of the
power supply unit
remains off when the
power has been
switched on.
3. The status LEDs
show that the CIU
850 has never
connected to GRM.
See sections
6.1 Communication
status LEDs and
6.2 Ethernet status
LEDs.
4. The status LEDs
show that the CIU
850 is not connected
to Modbus RTU.
See section
6.1 Communication
status LEDs.
5. The status LEDs
show that the CIU
850 is not connected
to Modbus TCP. See
section
6.1 Communication
status LEDs.
a) The microSD card is not
inserted correctly in slot 1.
b) There is no microSD card in
slot 1, or the card is
defective.
a) The power supply unit is
defective.
b) No power supply present.
a) No GRM commissioning has
taken place.
b) The CIU 850 cannot connect
to the Internet.
c) The Ethernet cable is
defective or not connected
correctly.
a) The serial cable or 9-pin to
15-pin serial adapter is
defective or not connected
correctly.
b) The wires of the 9-pin to 15-
pin serial adapter are
defective.
c) Wrong configuration of the
GRM account.
a) The Ethernet cable to the
Modbus TCP slaves is not
proper connected.
b) The Ethernet cable to the 3G/
4G router is not proper
connected.
Turn off the CIU 850, press on the microSD
card and remove it from the slot. Re-insert
the card in slot 1 and click it home. Turn on
the CIU 850.
Check if the microSD card has been inserted
in slot 2 by mistake.
For card replacement, find the product
number in the parts list and contact the
nearest Grundfos service centre.
Connect another 24 V power supply unit to
the PLC CPU.
Contact the nearest supplier service centre.
Check the main power supply and the fuse.
Configure the GRM server according to
section 5.4 GRM commissioning.
Check that ports 80 and 443 of the Ethernet
router, firewall and network are open for
outbound traffic.
Check that both ends of the Ethernet cable
are correctly inserted in the ports, and that
LED5 is on. Replace the cable if necessary.
Check that both ends of the serial cable are
correctly inserted in the ports or adapter. If a
radio modem is used, check the external 24 V
power supply of the radio modem.
Replace the cable or adapter if necessary.
Replace the adapter.
Check that the configuration of GRM is
correct.
Check the Ethernet cable connection to the
Modbus TCP slaves.
Check the Ethernet cable connecting to the
router and that the router is switched on and
correctly set. Verify that the SIM card fit to the
router and uses the correct closed APN.
6
Page 7
9. Parts list
QuantityDescriptionProduct number
1Complete CIU 850 box98502708
1MicroSD card (pre-installed in slot 1 of the PLC CPU)98516861
1PLC CPU
1PLC CPU extension module
1Power supply unit, 24 VDC, 4 A
1Red wire
2Black wire
1Ethernet cable with RJ 45 connectors (patch cable)
19-pin to 15-pin serial adapter with two wires for external 24 VDC
1RS-485 serial cable (1.8 metres)
1Installation and operating instructions for the 24 V power supply unit
1Installation note for the PLC CPU and the extension module
1DIN rail
2M4 x 10 screw with washers
24.2 x 13 self-tapping screw
10. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
English (GB)
Subject to alterations.
7
Page 8
Appendix1
X000
X001 X101
X200 DV1-D
X103
X100 X102
CX9020
PWR
TC
HDD
HDD
PE PE 03 04
-- --
++ - -
24V
24V
0V
0V
01
02
X0 00
07 08
RS232
RS485
TxD+/RxD+ Txd-/RxD-
BECKHOFF
EL2004
BECKHOFF
TxD+
RxD+
RxD-
RxD-
1
2
3
4
5
6
Txd-/RxD-
TxD+/RxD+
Appendix
RS-422/RS485 connection (CX9020-N031)
The CX9020-N030 system interface provides an RS
485 interface, COM1. It is implemented on a 9-pole
Sub-D socket strip. To connect to ELSA deceives
using RJ11 connectors, use the connection setup
illustrated below:
TM06 5643 5115TM06 5644 5115 - TM06 5645 5115
For RS 485 pins 2 and 3 (data +) must be connected,
and pins 7 and 8 (data -).
Pin assignment of the COM interface
8
PINSignalTypeDescription
2TxD+Data-Out +Transmit 422
3RxD+Data-In +Receive 422
5GNDGroundGround
6VCC VCC+5 V
7TxD-Data-Out -Transmit 422
8RxD-Data-In -Receive 422
Page 9
Declaration of conformity2
EU declaration of conformity
We, Grundfos, declare under our sole responsibility that the product
CIU850 to which the declaration below relates, are in conformity with
these Council directives on the approximation of the laws of the EU
member states:
– Low Voltage Directive (2014/35/EU).
Standard used: EN 60950-1:2006 + AC:2011 + A11:2009
+A12:2011 + A1:2010 + A2:2013
– EMC Directive (2014/30/EU).
Standard used: EN 61204-3:2000, EN 61000-6-2:2015 and
EN 61000-6-4:2005 + A1:2011
– RoHS Directives: (2011/65/EU and 2015/863/EU)
Standard used: EN 50581:2012
This EU declaration of conformity is only valid when published as
part of the Grundfos installation and operating instructions
(publication number 98490991 0517).
Bjerringbro, 1st April 2017
Svend Aage Kaae
Senior Manager
GRUNDFOS Holding A/S
Poul Due Jensens Vej 7
8850 Bjerringbro, Denmark
Manufacturer, Person authorised to compile technical file and
empowered to sign the EC declaration of conformity.
Declaration of conformity
9
Page 10
Argentina
Grundfos companies
Bombas GRUNDFOS de Argentina S.A.
Ruta Panamericana km. 37.500 Centro
Industrial Garin
1619 Garín Pcia. de B.A.
Phone: +54-3327 414 444
Telefax: +54-3327 45 3190
Australia
GRUNDFOS Pumps Pty. Ltd.
P.O. Box 2040
Regency Park
South Australia 5942
Phone: +61-8-8461-4611
Telefax: +61-8-8340 0155
GRUNDFOS Sarajevo
Zmaja od Bosne 7-7A,
BH-71000 Sarajevo
Phone: +387 33 592 480
Telefax: +387 33 590 465
www.ba.grundfos.com
e-mail: grundfos@bih.net.ba
Brazil
BOMBAS GRUNDFOS DO BRASIL
Av. Humberto de Alencar Castelo
Branco, 630
CEP 09850 - 300
São Bernardo do Campo - SP
Phone: +55-11 4393 5533
Telefax: +55-11 4343 5015
Bulgaria
Grundfos Bulgaria EOOD
Slatina District
Iztochna Tangenta street no. 100
BG - 1592 Sofia
Tel. +359 2 49 22 200
Fax. +359 2 49 22 201
email: bulgaria@grundfos.bg
GRUNDFOS Pompe România SRL
Bd. Biruintei, nr 103
Pantelimon county Ilfov
Phone: +40 21 200 4100
Telefax: +40 21 200 4101
E-mail: romania@grundfos.ro
Russia
ОООГрундф ос Россия
109544, г. Москва, ул. Школьная,
39-41, стр. 1
Тел. (+7) 495 564-88-00 (495)
737-30-00
Факс (+7) 495 564 88 11
E-mail grundfos.moscow@grundfos.com
Serbia
Grundfos Srbija d.o.o.
Omladinskih brigada 90b
11070 Novi Beograd
Phone: +381 11 2258 740
Telefax: +381 11 2281 769
www.rs.grundfos.com