Rittal DK 7030.150 User manual

CMC III Analogue Differential
Pressure Sensor
DK 7030.150
Assembly and operating instructions

Foreword
EN
2Rittal CMC III Analogue Differential Pressure Sensor
Foreword
Dear Customer,
Thank you for choosing our CMC III analogue differential
pressure sensor (referred to hereafter as "differential
pressure sensor")!
We wish you every success.
Yours
Rittal GmbH & Co. KG
Rittal GmbH & Co. KG
Auf dem Stuetzelberg
35745 Herborn
Germany
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
www.rittal.com
www.rittal.de
We are always happy to answer any technical questions
regarding our entire range of products.

Rittal CMC III Analogue Differential Pressure Sensor 3
Contents
EN
Contents
1 Notes on documentation .................. 4
1.1 CE labelling ................................................... 4
1.2 Storing the documents .................................. 4
1.3 Symbols used in these operating
instructions ...................................................4
1.4 Associated documents ................................. 4
2 Safety instructions ............................ 5
2.1 General safety instructions ............................ 5
2.2 Service and technical staff ............................ 5
3 Product description .......................... 6
3.1 Function description and components .......... 6
3.1.1 Function ............................................................... 6
3.1.2 Components ........................................................ 6
3.2 Proper use, foreseeable misuse .................... 6
3.3 Scope of supply ............................................ 6
4 Transport and handling .................... 7
4.1 Transport ...................................................... 7
4.2 Unpacking .................................................... 7
5 Installation ........................................ 8
5.1 Safety instructions ......................................... 8
5.2 Siting location requirements .......................... 8
5.3 Installation procedure .................................... 8
5.3.1 Installation notes ................................................... 8
5.3.2 Installation with the provided bracket on the
enclosure frame .................................................... 8
5.3.3 Installation with the provided bracket on a system
chassis ................................................................. 9
5.3.4 Installation on a top-hat rail ................................... 9
5.4 Connecting the sensor ................................ 10
6 Operation ....................................... 11
6.1 Activating the differential pressure sensor ... 11
6.2 Operating and display elements .................. 11
6.3 LED displays ............................................... 11
6.3.1 Multi-LED displays .............................................. 11
6.3.2 LED displays on the CAN bus connection ........... 11
6.4 Operating the CMC III Processing Unit from
the website .................................................11
6.4.1 Device ................................................................ 11
6.4.2 Pressure ............................................................. 12
7 Storage and disposal ..................... 13
7.1 Storage ....................................................... 13
7.2 Disposal ...................................................... 13
8 Technical specifications ................. 14
9 Customer service addresses .......... 15

1 Notes on documentation
EN
4Rittal CMC III Analogue Differential Pressure Sensor
1 Notes on documentation
1.1 CE labelling
Rittal GmbH & Co. KG hereby confirms that the CMC III
analogue differential pressure sensor is compliant with
the EC EMC Directive 2014/30/EU. An appropriate dec-
laration of conformity has been prepared. It can be pro-
vided on request.
1.2 Storing the documents
The operating, installation and maintenance instructions
as well as all applicable documents are an integral part
of the product. They must be passed to those persons
who are engaged with the unit and must always be avail-
able and on hand for the operating and maintenance
personnel.
1.3 Symbols used in these operating in-
structions
The following symbols are used in this documentation:
This symbol indicates an "action point" and shows that
you should perform an operation or procedure.
1.4 Associated documents
– Installation and Short User's Guide
– CMC III Processing Unit/CMC III Processing Unit
Compact assembly and operating instructions
Danger!
A dangerous situation in which failure to
comply with the instructions causes
death or severe injury.
Warning!
A hazardous situation which may lead to
death or serious injury if the instructions
are not followed.
Caution!
A hazardous situation which may lead to
(minor) injuries if the instructions are not
followed.
Note:
Identification of situations that can lead to
material damage.

Rittal CMC III Analogue Differential Pressure Sensor 5
2 Safety instructions
EN
2 Safety instructions
2.1 General safety instructions
Please observe the subsequent general safety instruc-
tions for the installation and operation of the system:
– Use only original Rittal products or products recom-
mended by Rittal in conjunction with the differential
pressure sensor.
– Please do not make any changes to the differential
pressure sensor that are not described in this manual
or in the associated manuals.
– The operational safety of the differential pressure sen-
sor is guaranteed only for its approved use. The tech-
nical specifications and limit values stated may not be
exceeded under any circumstances. In particular, this
applies to the specified ambient temperature range
and IP degree of protection.
– The differential pressure sensor may not be opened.
The unit does not contain any parts that need servic-
ing.
– Operating the system in direct contact with water, ag-
gressive materials or inflammable gases and vapours
is prohibited.
– Other than these general safety instructions, ensure
you also observe the specific safety instructions when
the tasks described in the following chapters are per-
formed.
2.2 Service and technical staff
– The mounting, installation, commissioning, mainte-
nance and repair of this unit may only be performed by
qualified mechanical and electro-technical trained per-
sonnel.
– Only properly instructed personnel may work on a unit
while in operation.

3 Product description
EN
6Rittal CMC III Analogue Differential Pressure Sensor
3 Product description
3.1 Function description and components
3.1.1 Function
The differential pressure sensor serves to monitor the
differential pressure for climate control applications, e.g.
raised floor cooling, cold aisle enclosure, etc. It delivers
the pressure measurements to the connected CMC III
Processing Unit. The differential pressure sensor has an
identification that allows it to be detected automatically
by the CMC III Processing Unit.
3.1.2 Components
The device consists of a compact plastic housing in
RAL 7035 with a ventilated front in RAL 9005.
3.2 Proper use, foreseeable misuse
The differential pressure sensor serves exclusively to
monitor the differential pressure for climate control appli-
cations using the air hose included in the scope of deliv-
ery, e.g. in a cold aisle. It may only be used together with
the CMC III Processing Unit. Any other use is not permit-
ted.
3.3 Scope of supply
– CMC III analogue differential pressure sensor
– Accessories provided (fig. 1)
– Installation and Short User's Guide
Fig. 1: Accessories provided
Note:
In the following text the designation "CMC III
Processing Unit" refers to both the "CMC III
Processing Unit" and also the "CMC III
Processing Unit Compact". All of the text
passages which only apply for one of the two
variants are labelled accordingly.
2x2x
5x
1x
1x
1x 1x
M4x10 5,5x13

Rittal CMC III Analogue Differential Pressure Sensor 7
4 Transport and handling
EN
4 Transport and handling
4.1 Transport
The unit is delivered in a carton.
4.2 Unpacking
Remove the unit's packaging materials.
Check the unit for any damage that occurred during
transport.
Remove the unit from the PE film.
Remove the protective film from the front cover of the
device.
Note:
After unpacking, the packaging materials
must be disposed of in an environmentally
friendly way. It consists of the following mate-
rials:
Polyethylene film (PE film), cardboard.
Note:
Damage and other faults, e.g. incomplete de-
livery, should immediately be reported to the
shipping company and to Rittal GmbH & Co.
KG in writing.

5 Installation
EN
8Rittal CMC III Analogue Differential Pressure Sensor
5 Installation
5.1 Safety instructions
Please observe the valid regulations for installation in
the country in which the differential pressure sensor is
installed and operated, and the national regulations for
accident prevention. Please also observe any compa-
ny-internal regulations, such as work, operating and
safety regulations.
The technical specifications and limit values stated
must not be exceeded under any circumstances. In
particular, this applies to the specified ambient tem-
perature range and IP degree of protection.
If a higher IP protection class is required for a special
application, the differential pressure sensor must be
installed in an appropriate housing or in an appropriate
enclosure with the required IP degree of protection.
5.2 Siting location requirements
To ensure the correct function of the unit, the conditions
for the installation site of the unit specified in section 8
"Technical specifications" must be observed.
Electromagnetic interference
– Interfering electrical installations (high frequency)
should be avoided.
5.3 Installation procedure
There are generally several options for installing the dif-
ferential pressure sensor:
1. Installation on the frame of the enclosure or IT enclo-
sure using the bracket included.
2. Installation with the provided bracket on a system
chassis.
3. Installation on a top-hat rail using the bracket includ-
ed along with a spring clip.
5.3.1 Installation notes
The differential pressure sensor must be positioned so
that it is ventilated with an adequate amount of air and
the ventilation slots are not covered.
5.3.2 Installation with the provided bracket on
the enclosure frame
The provided bracket is used for installation on the frame
of an IT enclosure.
For installation on a TS IT enclosure, break off the pro-
truding lugs at the rear of the bracket.
Fig. 2: Preparing the bracket for installation on a TS IT enclo-
sure
Place the differential pressure sensor on the bracket
from above.
Fig. 3: Attaching the sensor to the bracket
Move the sensor sideways slightly on the bracket so
that it latches into place.
Fig. 4: Latching the sensor into place on the bracket
Fasten the bracket, including differential pressure sen-
sor, at the desired position in the enclosure or the IT
enclosure by making a quarter-turn of the connector.

Rittal CMC III Analogue Differential Pressure Sensor 9
5 Installation
EN
Fig. 5: Mounting the sensor in the enclosure or IT enclosure
Optionally secure the bracket using the two screws in-
cluded in the scope of delivery.
Fig. 6: Optional securing of the bracket
5.3.3 Installation with the provided bracket on a
system chassis
The provided bracket is used for installation on a system
chassis.
Place the differential pressure sensor on the bracket
from above and latch it similar to the installation on the
enclosure frame.
Fasten the bracket, including differential pressure sen-
sor, at the desired position in the enclosure on the sys-
tem chassis by making a quarter-turn of the
connector.
Fig. 7: Fastening the sensor to a system chassis
Also always secure the bracket with the two provided
bolts.
5.3.4 Installation on a top-hat rail
The sensor can also be mounted on a top-hat rail using
the bracket along with the spring clip included in the
scope of delivery.
First screw the bracket onto the spring clip provided
for installation on a top-hat rail.
Then place the differential pressure sensor on the
bracket and latch it into place.
Fig. 8: Fastening the bracket to the spring clip
Latch the spring clip into place at the desired position
on the top-hat rail.

5 Installation
EN
10 Rittal CMC III Analogue Differential Pressure Sensor
Fig. 9: Sensor with spring clip on the top-hat rail
5.4 Connecting the sensor
The CAN bus connection supplies the differential pres-
sure sensor with the necessary operating voltage. A
separate power supply unit does not need to be con-
nected.
Connect the air hose for the reference measurement
to the appropriate connection (fig. 10, item 2).
Connect the air hose for the comparison measure-
ment to the appropriate connection (fig. 10, item 1).
Fig. 10: Front of the differential pressure sensor
Key
1 Connection for the air hose (comparison value)
2 Connection for the air hose (reference value)
3 Multi-LED for status display
Run the two air hoses to the corresponding measure-
ment point.
Use a CAN bus connection cable to connect the dif-
ferential pressure sensor to a CAN bus interface on the
CMC III Processing Unit or the neighbouring compo-
nent on the CAN bus (fig. 11, item 4).
Fig. 11: Rear of the differential pressure sensor
Key
1 CAN bus connection, 24 V
2 CAN bus connection, 24 V
The following CAN bus connection cables from the
CMC III accessories can be used:
– DK 7030.090 (length 0.5 m)
– DK 7030.091 (length 1 m)
– DK 7030.092 (length 1.5 m)
– DK 7030.093 (length 2 m)
– DK 7030.480 (length 3 m)
– DK 7030.490 (length 4 m)
– DK 7030.094 (length 5 m)
– DK 7030.095 (length 10 m)
The software is updated, if necessary, after being con-
nected. The status LED of the differential pressure sen-
sor glows blue throughout the entire update process
and also flashes purple while the sensor itself receives
an update.
In addition, the status LED of the CMC III Processing
Unit flashes white and a corresponding message ap-
pears on the website.
The update of the sensor is complete when the following
conditions have been fulfilled:
1. The LEDs on the CAN bus connection of the sensor
light green.
2. The multi-LED of the sensor behind the front panel
flashes blue and green, yellow or red, depending on
the condition of the sensor.
Further components are connected as a daisy chain.
If necessary, connect another component (e.g. anoth-
er sensor type) to the second, free CAN bus interface
of the differential pressure sensor (fig. 11, Item 5).
Status change display:
– The two green and the two red CAN bus LEDs on
the CAN bus connection flash.
– The multi-LED of the Processing Unit flashes contin-
ually in the sequence green – orange – red.
– The multi-LED of the differential pressure sensor
flashes blue continuously.
Press the "C" key on the CMC III Processing Unit (an
initial audio signal will sound) and keep it pressed for
approx. 3 seconds until a second audio signal is
heard.
Note:
No settings can be modified as long as the
update process is running.
Note:
See section 6.3.1 "Multi-LED displays" for a
list of all of the multi-LED displays.

Rittal CMC III Analogue Differential Pressure Sensor 11
6 Operation
EN
6 Operation
6.1 Activating the differential pressure sen-
sor
After connecting the differential pressure sensor to a
neighbouring component using a CAN bus connecting
cable, the differential pressure sensor starts automati-
cally (see section 5.4 "Connecting the sensor"). Sepa-
rate activation is not required.
6.2 Operating and display elements
Fig. 12: Front of the differential pressure sensor
Key
1 Connection 1 for the air hose (comparison value)
2 Connection 2 for the air hose (reference value)
3 Multi-LED for status display
Fig. 13: Rear of the differential pressure sensor
Key
1 CAN bus connection, 24 V
2 CAN bus connection, 24 V
6.3 LED displays
A multi-LED for the status display is integrated into the
front of the differential pressure sensor (fig. 12, item 3).
Further LEDs are located at the rear on the CAN bus
connection (fig. 13, item 4 and item 5).
6.3.1 Multi-LED displays
The status of the differential pressure sensor can be
read on the multi-LED.
Continuously lit
Flashing codes
6.3.2 LED displays on the CAN bus connection
A red and a green LED are located on the CAN bus con-
nection. They display the status of the CAN bus.
6.4 Operating the CMC III Processing Unit
from the website
After logging on to the CMC III Processing Unit, the web
interface for operating the device is displayed.
First select the "CMCIII-DIF" entry in the navigation
area.
Similar to the CMC III Processing Unit, the Configura-
tion tab can be used to individually configure the access
rights for the differential pressure sensor (Access
Rights button) and the alarm messages (Alarm Con-
figuration button).
The Observation tab is used to configure all of the set-
tings for the differential pressure sensor, such as the limit
values for warning and alarm messages.
In the following sections 6.4.1 "Device" and 6.4.2 "Pres-
sure", only those parameters which you can modify are
described. There are also display values that provide in-
formation.
6.4.1 Device
General settings for the differential pressure sensor are
configured at the "Device" level.
Colour Status
Red Invalid measured value
Tab. 1: Multi-LED continuously lit
Colour Status
Green When the measured value changes or, at
the latest, every 5 seconds.
Tab. 2: Multi-LED flashing codes
Orange The differential pressure sensor has the
"warning" status.
Fast flashing: upper limit value overshot.
Slow flashing: lower limit value undershot.
Red The differential pressure sensor has the
"alarm" status.
Fast flashing: upper limit value overshot.
Slow flashing: lower limit value undershot.
Blue Communication via the CAN bus.
Colour Status
Green (con-
tinuously lit)
Communication via the CAN bus possible.
Red (flash-
ing)
Transmission fault.
Tab. 3: LEDs for the CAN bus connection
Parameter Explanation
Description Specific description of the differential pres-
sure sensor.
Tab. 4: Settings in the "Device" level
Colour Status
Tab. 2: Multi-LED flashing codes

6 Operation
EN
12 Rittal CMC III Analogue Differential Pressure Sensor
In addition, parameters that provide detailed information
about the differential pressure sensor, such as the ver-
sion of the deployed software and hardware, are also
displayed. You should have such information available,
in particular to permit fast troubleshooting of queries
with Rittal.
6.4.2 Pressure
Differential pressure measurement settings are config-
ured on the "Pressure" level.
The following parameters are also displayed for the dif-
ferential pressure sensor:
Location Installation location of the differential pres-
sure sensor.
Parameter Explanation
DescName Specific description of the differential pres-
sure measurement.
SetPtHigh-
Alarm
Upper limit of the differential pressure; an
alarm message is output if this is exceed-
ed.
SetPtHigh-
Warning
Upper limit of the differential pressure; a
warning message is output if this is ex-
ceeded.
SetPtLow-
Warning
Lower limit of the differential pressure; a
warning message is output if this is fallen
below.
SetPtLow-
Alarm
Lower limit of the differential pressure; an
alarm message is output if this is fallen be-
low.
Hysteresis The necessary percentage deviation for
falling below or exceeding the limit for the
differential pressure to trigger a status
change (see the assembly, installation and
operating instructions for the CMC III Pro-
cessing Unit).
Tab. 5: Settings in the "Pressure" level
Parameter Explanation
Value Currently measured differential pressure.
Status Current status of the sensor, taking into ac-
count the' hysteresis.
Tab. 6: Displays in the "Pressure" level
Note:
If the value "0" is entered for all limit values at
the "Pressure" level, the status of the sensor
is always "OK".
Parameter Explanation
Tab. 4: Settings in the "Device" level

Rittal CMC III Analogue Differential Pressure Sensor 13
7 Storage and disposal
EN
7 Storage and disposal
7.1 Storage
If the device is not used for a long period, Rittal recom-
mends that it is disconnected from the mains power
supply and protected from damp and dust.
7.2 Disposal
Since the differential pressure sensor consists mainly of
the "housing" and "circuit board" parts, the device must
be passed on to the electronic waste recycling system
for disposal.

8 Technical specifications
EN
14 Rittal CMC III Analogue Differential Pressure Sensor
8 Technical specifications
Technical specifications CMC III differential pressure sensor
Model no. 7030.150
W x H x D (mm) 110 x 30 x 40
Operating temperature range 0 °C…+55 °C
Storage temperature -45 °C…+85 °C
Operating humidity range 5%...95% relative humidity, non-condensing
Number of pressure measurement points 2
Measurement range -500 Pa…+500 Pa
Measurement precision ± 3%
Resolution 1.0 Pa
Protection category IP 30 to IEC 60 529
Inputs and outputs
CAN bus (RJ 45) 2 x
Air hose connections 2 x
Operation/signals LED display OK / warning / alarm / network status
Tab. 7: Technical specifications

Rittal CMC III Analogue Differential Pressure Sensor 15
9 Customer service addresses
EN
9 Customer service addresses
For technical queries, please contact:
Tel.: [phone]
E-mail: [e-mail]
Homepage: www.rittal.com
For complaints or service requests, please contact:
Tel.: [phone]
E-mail: [e-mail]

◾Enclosures
◾ Power Distribution
◾ Climate Control
◾ IT Infrastructure
◾ Software & Services
You can find the contact details of all
Rittal companies throughout the world here.
www.rittal.com/contact
RITTAL GmbH & Co. KG
Auf dem Stuetzelberg · 35745 Herborn · Germany
Phone [phone]
E-mail: [e-mail] · www.rittal.com
07.2020 / D-0000-00002329-00-EN