Rittal DK 7859.312 User manual

PSM MID measuring module
for CMC III
DK 7859.312
DK 7859.332
Montage-, Installations- und Bedienungsanleitung
Assembly and operating instructions

EN
2Rittal PSM MID measuring module for CMC III
Preface
Preface
Dear Customer!
We thank you for choosing our PSM MID measuring
module for CMC III (subsequently called "PSM MID
measuring module")!
We wish you every success!
Your,
Rittal GmbH & Co. KG
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn
Germany
Tel.: [phone] / 505-0
Fax: [phone]
E-mail: [email protected]
www.rittal.com
www.rittal.de
We are always happy to answer any technical ques-
tions regarding our entire range of products.

Rittal PSM MID measuring module for CMC III 3
EN
Contents
Contents
1 Notes on documentation ................. 4
1.1 CE labelling .................................................. 4
1.2 Storing the documents ................................. 4
1.3 Symbols in these operating instructions ...... 4
1.4 Other applicable documents ....................... 4
2 Safety instructions ........................... 5
2.1 General safety instructions .......................... 5
2.2 Operating and technical staff ...................... 5
3 Product description ........................ 6
3.1 Functional description and components ..... 6
3.1.1 Function ............................................................... 6
3.1.2 Components ........................................................ 6
3.2 Proper use, foreseeable misuse .................. 6
3.3 Dimensions and clearances ........................ 6
3.4 Scope of supply ........................................... 6
4 Transportation and handling ........... 7
4.1 Transport ...................................................... 7
4.2 Unpacking ................................................... 7
5 Assembly and siting ....................... 8
5.1 Installation site requirements ....................... 8
5.2 Assembly procedure ................................... 8
5.2.1 Notes on assembly .............................................. 8
5.2.2 Assembly of the PSM MID measuring module .... 8
6 Installation ....................................... 9
6.1 Safety instructions ........................................ 9
6.2 Requirements for the connection ................. 9
6.3 Installation procedure .................................. 9
6.3.1 Connection of only one consumer ...................... 9
6.3.2 Connection of two consumers ........................... 10
6.4 Connection to a CMC III Processing Unit .. 10
7 Operation ...................................... 11
7.1 Operating and display elements ............... 11
7.2 LED displays .............................................. 11
7.2.1 Multi-LED displays ............................................ 11
7.2.2 Display of the LEDs above the MID displays .... 11
7.2.3 Displays of the LEDs on the CAN bus
connection ......................................................... 11
7.3 Description of operation ............................ 12
7.3.1 General notes .................................................... 12
7.3.2 Values for energy billing .................................... 12
7.4 Operation from the operating elements on
the front ...................................................... 12
7.4.1 Settings using the configuration menu .............. 12
7.4.2 Resetting the values to the factory defaults ...... 12
7.4.3 Settings for the two infeeds ............................... 13
7.4.4 Messages on the main display ......................... 14
7.5 Operation of the CMC III Processing Unit
from the web site ....................................... 14
7.5.1 Device ............................................................... 14
7.5.2 Circuit 1 ............................................................. 14
7.5.3 Circuit 2 ............................................................. 17
8 Inspection and maintenance ......... 18
8.1 Safety instructions ..................................... 18
8.2 Work to be performed ............................... 18
8.2.1 Inspection .......................................................... 18
8.2.2 Cleaning ............................................................ 18
8.2.3 Maintenance ...................................................... 18
8.2.4 Recalibration ..................................................... 18
8.2.5 Test procedure .................................................. 18
9 Storage and disposal .................... 19
9.1 Storage ..................................................... 19
9.2 Disposal .................................................... 19
10 Testing and rectification ................ 20
10.1 Wrong cable combination ......................... 20
10.2 Wrong cable type ..................................... 20
10.3 Other possible error sources .................... 20
11 Technical specifications ................ 21
12 Accessories ................................... 23
13 Customer service addresses ........ 24

1 Notes on documentation
EN
4Rittal PSM MID measuring module for CMC III
1 Notes on documentation
1.1 CE labelling
Rittal GmbH & Co. KG confirms the conformity of the
PSM MID measurement module with EU-EMC regula-
tion 2004/108/EU and with EU directive 2004/22/EU
for measuring units. An appropriate declaration of
conformity has been prepared. It can be provided on
request.
1.2 Storing the documents
The assembly, installation and operating instructions
as well as all applicable documents are integral com-
ponents of the product. They must be passed to those
persons who are engaged with the unit and must al-
ways be available and on hand for the operating and
maintenance personnel.
1.3 Symbols in these operating instructions
The following symbols are used in this documentation:
This symbol indicates an "Action Point" and shows
that you should perform an operation/procedure.
1.4 Other applicable documents
– Installation and Short User's Guide
– CMC III Processing Unit Assembly and Operating
Instructions
Danger!
A dangerous situation for which the fail-
ure to comply with this note causes
death or severe injury.
Warning!
A dangerous situation for which the fail-
ure to comply with this note can cause
death or severe injury.
Caution!
A dangerous situation for which the fail-
ure to comply with this note can cause
(minor) injuries.
Note:
Identification of the situations that can lead
to material damage.

Rittal PSM MID measuring module for CMC III 5
2 Safety instructions
EN
2 Safety instructions
2.1 General safety instructions
Please observe the subsequent general safety in-
structions for the installation and operation of the sys-
tem:
– Assembly and installation of the PSM MID measur-
ing module, in particular for wiring with mains pow-
er, may be performed only by a trained electrician.
– Please observe the valid regulations for the electri-
cal installation of the country in which the PSM MID
measuring module is installed and operated, and
the national regulations for accident prevention.
Please also observe any company-internal regula-
tions, such as work, operating and safety regula-
tions.
– Use only original Rittal products or products recom-
mended by Rittal in conjunction with the PSM MID
measuring module.
– Please do not make any changes to the PSM MID
measuring module that are not described in this
manual or in the associated manuals.
– The operational safety of the PSM MID measuring
module is guaranteed only for its approved use. The
technical data and limit values stated in the techni-
cal specifications may not be exceeded under any
circumstances. In particular, this applies to the
specified ambient temperature range and IP degree
of protection.
– The PSM MID measuring module must not be
opened. The unit does not contain any parts that
need servicing.
– The operation of the system in direct contact with
water, aggressive materials or in-flammable 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 performed.
2.2 Operating and technical staff
– The mounting, installation, commissioning, mainte-
nance and repair of this unit may be performed only
by qualified mechanical and electro-technical
trained personnel.
– Only properly instructed personnel may work on a
unit while in operation.

3 Product description
EN
6Rittal PSM MID measuring module for CMC III
3 Product description
3.1 Functional description and components
3.1.1 Function
The PSM MID measuring module is an energy meter
that can be deployed for the MID-conform measure-
ment of individual 16/32 A consumers for energy bill-
ing purposes. For this task, the measuring module
provides two mutually independent circuits with sepa-
rate 3-phase energy measurement. It can be easily in-
tegrated in the 482.6 mm (19") level of an IT rack and
connected using the appropriate connection cables.
The PSM MID measuring module can be connected to
a CMC III Processing Unit using a CAN bus interface.
3.1.2 Components
The unit consists of a compact sheet-steel housing fin-
ished to RAL 9005.
3.2 Proper use, foreseeable misuse
The PSM MID measuring module is deployed, in par-
ticular, for the MID-conform measurement of individu-
al 16/32 A consumers for energy billing purposes. It is
designed for operation in computer centres (IT envi-
ronment). Billing of the reactive energy and a general
billing after expiration of the calibration end date print-
ed on the measuring module is not permitted.
The unit is state of the art and built according to rec-
ognised safety regulations. Nevertheless, improper
use can present a hazard to life and limb of the user
or third parties, or result in possible impairment of the
system and other property.
The unit should thus only be used properly and in
technically sound condition. Any malfunctions which
impair safety should be rectified immediately! Follow
the operating instructions!
The intended use also includes the observance of the
documentation provided and fulfilling the inspection
and maintenance conditions.
Rittal GmbH & Co. KG is not responsible for any dam-
age which may result from failure to comply with the
documentation provided. This also applies to failure to
comply with the valid documentation for the used ac-
cessories.
Inappropriate use may result in danger. Inappropriate
use may include:
– Use of impermissible tools
– Improper operation
– Improper rectification of malfunctions
– Use of accessories not approved by Rittal GmbH &
Co. KG
3.3 Dimensions and clearances
– 1 U for 19" installation
– Approx. 200 mm deep
3.4 Scope of supply
– PSM MID measuring module
– Provided accessories (fig. 1)
– Installation and Short User's Guide
Fig. 1: Provided accessories

Rittal PSM MID measuring module for CMC III 7
4 Transportation and handling
EN
4 Transportation 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 has occurred
during transport.
Remove the unit from the packaging.
Note:
After unpacking, the packaging materials
must be disposed of in an environmentally
friendly way. They can consist of the follow-
ing materials:
Polyethylene film (PE film), cardboard.
Note:
Damage and other faults, e.g. incomplete
delivery, should immediately be reported to
the shipping company and to Rittal GmbH
& Co. KG in writing.

5 Assembly and siting
EN
8Rittal PSM MID measuring module for CMC III
5 Assembly and siting
5.1 Installation site requirements
To ensure the correct function of the unit, the condi-
tions for the installation site of the unit specified in sec-
tion 11 "Technical specifications" must be observed.
Electromagnetic interference
– Interfering electrical installations (high frequency)
should be avoided.
5.2 Assembly procedure
5.2.1 Notes on assembly
The PSM MID measuring module must not be in-
stalled in vertical position and also not upside down
in the enclosure.
Ensure good access to the front of the unit so that
the display is easy to read.
5.2.2 Assembly of the PSM MID measuring
module
Fasten the PSM MID measuring module as shown in
fig. 2 with the screws provided in a free slot (1 U) of
the server enclosure.
Fig. 2: Mounting on the enclosure frame

Rittal PSM MID measuring module for CMC III 9
6 Installation
EN
6 Installation
6.1 Safety instructions
Please observe the valid national regulations for the
electrical installation and operation of the PSM MID
measuring module, and the national regulations for
accident prevention. Please also observe any com-
pany-internal regulations, such as work, operating
and safety regulations.
The technical data and limit values stated in the
technical specifications may not be exceeded un-
der any circumstances. In particular, this applies to
the specified ambient temperature range and IP de-
gree of protection.
If a higher IP degree of protection is required for a
special application, the PSM MID measuring mod-
ule must be installed in an appropriate housing or in
an appropriate enclosure with the required IP de-
gree of protection.
6.2 Requirements for the connection
The electrical connection may be made only on a
TN-S network in accordance with the the specifica-
tions prescribed in the technical specifications (see
section 11 "Technical specifications").
Depending on the PSM MID measuring module var-
iant, a back-up fuse of 3 x 16 A (for model number
DK 7859.312) or 3 x 32 A (for model number
DK 7859.332) should be provided.
For connection of the PSM MID measuring module,
use one of the following connection cable sets from
the Rittal accessories (see section 12 "Accesso-
ries"):
– DK 7859.315 Connection cable set CEE – 16 A
– DK 7859.316 Connection cable set PSM – 16 A
(for PSM busbars with Wago-X-Com connector)
– DK 7859.335 Connection cable set CEE – 32 A
Observe the pin assignment of the connections
(identical for the inputs and the outputs):
After making the connection, the status screen and
the MID displays of infeeds 1 and 2 show briefly the
software version of the PSM MID measuring module
on the main display of the measuring module (fig. 4,
item 6) The unit is operational after a short delay.
6.3 Installation procedure
Fig. 3: Connections on the rear
Key
11 "Infeed 1" connection
12 Connection plug clamping lever
13 "Consumer 1" connection
14 CAN bus connection
15 CAN bus connection
16 "Infeed 2" connection
17 "Consumer 2" connection
6.3.1 Connection of only one consumer
Connect a cable from the above-mentioned con-
nection cable set to the "Consumer 1" connection
(fig. 3, item 13) and at the input of the consumer it-
self.
Lock the connection plug to the PSM MID measur-
ing module using the appropriate clamping lever
(fig. 3, item 12).
Warning!
Work on electrical systems or equip-
ment may only be carried out by an elec-
trician or by trained personnel guided
and supervised by an electrician. All
work must be carried out in accordance
with electrical engineering regulations.
The unit may only be connected after the
above-mentioned personnel have read
this information!
Use insulated tools.
The connection regulations of the appro-
priate power company are to be fol-
lowed.
Note:
Each connection cable set contains both
cables for a circuit (input and output). Two
connection cable sets are required when
both infeeds are used.
Pin Signal
Pin 1 L1
Pin 2 L2
Pin 3 L3
Pin 4 N
Earthing PE
Note:
Phase 1 (L1) of the associated infeed must
be used for a single-phase measurement.
The separation into three independent sin-
gle-phase measurements for each infeed is
not permitted.

6 Installation
EN
10 Rittal PSM MID measuring module for CMC III
Also establish the voltage supply using a cable from
the above-mentioned connection cable sets to the
"Infeed 1" connection (fig. 3, item 11).
Also lock the connection plug to the PSM MID meas-
uring module using the appropriate clamping lever.
Finally, provide an appropriate cable clamp for all
connection cables.
6.3.2 Connection of two consumers
If you want to measure the energy consumption for a
second consumer:
Disconnect the PSM MID measuring module from
the voltage supply if a consumer has already been
connected.
Connect a cable from the above-mentioned con-
nection cable set to the "Consumer 2" connection
(fig. 3, item 17) and at the input of the consumer it-
self.
Lock the connection plug to the PSM MID measur-
ing module using the appropriate clamping lever
(fig. 3, item 12).
Also establish the voltage supply using a cable from
the above-mentioned connection cable sets to the
"Infeed 2" connection (fig. 3, item 16).
Also lock the connection plug to the PSM MID meas-
uring module using the appropriate clamping lever.
Connect consumer 1 and infeed 1 similarly as for
the connection of just one consumer (see section
6.3.1 "Connection of only one consumer").
Finally, provide an appropriate cable clamp for all
connection cables.
6.4 Connection to a CMC III Processing Unit
A further configuration of the PSM MID measuring
module is possible from a web site when the unit is
connected to a CMC III Processing Unit.
Connect the PSM MID measuring module using a
CAN bus connection cable with a CAN bus interface
of the CMC III Processing Unit or of the neighbour-
ing component in the CAN bus (fig. 3, item 14).
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 7030.094 (length 5 m)
– DK 7030.095 (length 10 m)
Further components are connected as daisy chain.
If necessary, connect another component to the
second free CAN bus interface of the PSM MID
measuring module (fig. 3, item 15), such as a sen-
sor from the range of CMC III accessories.
Note:
You must use the "Infeed 1" and "Consumer
1" connections when you use only one in-
feed and one consumer.
In this case, change the Disp. Circuit
setting in the configuration menu to
"Source 1" (see section 7.4.1 "Settings us-
ing the configuration menu") to suppress
error messages of infeed 2.
Note:
If you have used only one infeed and one
consumer previously, after connection of
the second consumer, if necessary, you
must change the Disp. Circuit setting in
the configuration menu to "Source 1 + 2"
(see section 7.4.1 "Settings using the con-
figuration menu").

Rittal PSM MID measuring module for CMC III 11
7 Operation
EN
7 Operation
7.1 Operating and display elements
Fig. 4: Operating and display elements
Key
1 "Infeed 1" MID display
2 "Infeed 1" LED
3 Multi-LED for the status display
4 "Esc" key
5 "Return" key
6 Main display, centre
7 "Up" key
8 "Down" key
9 "Infeed 2" LED
10 "Infeed 2" MID display
11 "Infeed 1" connection
12 Connection plug clamping lever
13 "Consumer 1" connection
14 CAN bus connection
15 CAN bus connection
16 "Infeed 2" connection
17 "Consumer 2" connection
7.2 LED displays
A multi-LED for the status display (fig. 4, item 3) is lo-
cated on the front of the PSM MID measuring module
to the left of the centre main display. Another LED for
each consumer display is located in the front above
the MID displays (fig. 4, item 2 and item 9). Further
LEDs are located at the rear on the CAN bus connec-
tion (fig. 4, item 14 and item 15). After connection of
the PSM MID measuring module, all LEDs flash briefly
once.
7.2.1 Multi-LED displays
The status of the PSM MID measuring module can be
read on the multi-LED.
Continuous illumination
Tab. 1: Multi-LED continuous illumination
Flashing codes
Tab. 2: Multi-LED flashing codes
7.2.2 Display of the LEDs above the MID displays
The two LEDs above the MID displays flash cyclically
during the measurement and are used for the con-
sumption display.
7.2.3 Displays of the LEDs on the CAN bus
connection
A red and a green LED are located on the CAN bus
connection. They display the status of the CAN bus.
Colour Status
Red The PSM MID measuring module is ini-
tialised or an incorrect connection cable
is used (see section 10 "Testing and rec-
tification").
Colour Status
Green Brief flashing: data has been sent.
Orange The PSM MID measuring module has
"warning" status.
Fast flashing: upper limit value overshot.
Slow flashing: lower limit value under-
shot.
Red The PSM MID measuring module has
"alarm" status.
Fast flashing: upper limit value overshot.
Slow flashing: lower limit value under-
shot.
Brief flashing: data could not be sent.
Blue Asymmetric flashing: The PSM MID
measuring module is searching for the
master.
Fast flashing: The PSM MID measuring
module has lost the master.
Brief flashing: The PSM MID measuring
module has received a synchronisation
message from the master.

7 Operation
EN
12 Rittal PSM MID measuring module for CMC III
Tab. 3: CAN bus connection LEDs
7.3 Description of operation
7.3.1 General notes
The unit can be configured using the operating ele-
ments on the front of the unit (see section 7.4 "Opera-
tion from the operating elements on the front"). A fur-
ther configuration is possible from a web site when the
unit is connected to a CMC III Processing Unit (see
section 7.5 "Operation of the CMC III Processing Unit
from the web site").
7.3.2 Values for energy billing
The energy is billed using the value ΣkWh displayed
on the MID display of the associated infeed (fig. 4,
item 1 and item 10).
7.4 Operation from the operating elements
on the front
7.4.1 Settings using the configuration menu
You can make the basic settings for the PSM MID
measuring module in the configuration menu.
For switched-off main display, press the "Return" key
(fig. 4, item 5).
The start screen appears.
Use the "Down" key on the main screen to select the
Circuit 1 or Circuit 2 menu (fig. 4, item 8).
Press the "Return" key for approx. 3 seconds.
The configuration menu appears: You can change
the following parameters
Tab. 4: Settings in the configuration menu
7.4.2 Resetting the values to the factory defaults
If necessary, the following settings of the PSM MID
measuring mode can be reset to the factory default.
– All setpoints and hysteresis values (hysteresis val-
ues can be set only via the CMC III Processing Unit)
– All designations that can be changed (Device-
Name, DeviceLocation, etc.)
– All settings for the configuration of the unit that can
be set from the configuration menu (see section
7.4.1 "Settings using the configuration menu")
– All categories (can be set only via the CMC III
Processing Unit)
– All energy values that the customer can reset
Keep the "Esc" key pressed (fig. 4, item 4).
Also press the "Down" key for approx. 3 seconds
(fig. 4, item 8).
The "Reset to Factory Default" prompt appears in the
main display.
Use the "Down" key to select the "Yes" row and press
the "Return" key to confirm the selection (fig. 4,
item 5).
All setting values of the PSM MID measuring module
are then reset to the factory default and the start
screen appears.
Colour Status
Green
steady light
Communication over the CAN bus possi-
ble.
Red flashing Transmission error.
Note:
Further notes for the general operation of
the web site can be found in the documen-
tation for the CMC III Processing Unit.
Note:
The displays on the centre main display of
the PSM MID measuring module (fig. 4,
item 6) and on the web site of a connected
CMC III Processing Unit may be used only
for informative purposes but not for billing
purposes.
Parameter Explanation
Disp. Circuit Source 1: Display of the messages,
measured values and setting values for
infeed 1
Source 2: Display of the messages,
measured values and setting values for
infeed 2
Source 1 + 2: Display of the messages,
measured values and setting values for
infeed 1 and infeed 2
Brightness
Display
Brightness of the main display (5 = dark,
15 = bright).
Inverse View On: bright font on dark background
Off: dark font on bright background
Init Screen
Timeout
Time duration after which the display
switches to the standby mode in the
event of inactivity (10 s – 300 s).
Menu Time-
out
Time duration after which the display
switches to the start screen in the event
of inactivity (10 s – 60 s).
Note:
If the second infeed is activated subse-
quently, the settings must be checked and
possibly changed.

Rittal PSM MID measuring module for CMC III 13
7 Operation
EN
Alternatively, use the "Down" key to select the "No"
row and press the "Return" key to confirm your se-
lection.
In this case, no changes are performed and the start
screen also appears.
7.4.3 Settings for the two infeeds
The basic settings for the two infeeds can be made
from the following menu structure:
The following parameters can be set or viewed in de-
tail.
– SetPtHighAlarm: upper alarm limit value [A] or [V]
– SetPtHighWarning: upper warning limit value [A] or
[V]
– SetPtLowWarning: lower warning limit value [A] or
[V]
– SetPtLowAlarm: lower alarm limit value [A] or [V]
The limit values are set for infeed 1 and infeed 2 sep-
arately for the three phases and for the current and
voltage values. In addition, limit values can be set
separately for the neutral conductor current for the two
infeeds as well as additional measured values, such
as apparent power and reactive power.
In the main menu, the ">*" and "*<" symbols are pre-
fixed or suffixed, respectively, to all parameters whose
values can be changed or after selection lead to low-
er-level menus.
To change limit values and to select lower-level men-
us, the "Up" (fig. 4, item 7) and "Down" (fig. 4, item 8)
keys can be used to select the desired value or menu.
After pressing the "Return" key (fig. 4, item 5), you can
change this value or switch to the appropriate menu.
Once a parameter to change the value has been se-
lected, the "->" or "<-" symbols are prefixed or suffixed,
respectively, in the main display. The "Up" and "Down"
keys can be used to change the value iteratively.
Example:
Use the "Down" key on the main screen to select the
Circuit 1.
Press the "Return" key.
The Circuit 1 Menu menu appears.
Use the "Down" key to select the Phase 1 Informa-
tion entry.
Press the "Return" key.
The Circuit 1 Phase 1 menu appears.
Use the "Down" key to select the Voltage entry.
Press the "Return" key.
The Configuration Circuit 1 Phase 1 Voltage
menu appears.
Use the "Down" key to select the SetPt. Low Warn.
entry.
Press the "Return" key.
The ">*" and "*<" symbols prefixed or suffixed to the
entry, respectively, change to the "->" or "<-" sym-
bols. The value can now be changed.
Press the "Up" and "Down" keys to increase or de-
crease, respectively, the lower limit value for the
voltage messages.
The value is changed in 1 V steps.
Press the "Return" key to confirm your input.
The symbols change again to ">*" before or "*<" af-
ter the entry.
Note:
After the setting values have been reset to
the factory default, the most recently in-
stalled firmware and the display values of
the two MID displays are retained. These
values are then available again on the web
site after approx. one minute.
Start screen
Circuit 1
Actual Energy Custom
Circuit 1 Menu
Circuit Information
Neutral Current
Active Energy
Active Energy Custom
Active Power
Phase 1 Information
Current
Voltage
Frequency
Power Factor
Active Power
Reactive Power
Apparent Power
Active Energy
Active Energy Custom
App. Energy
Phase 2 Information
Phase 3 Information
Circuit 2

7 Operation
EN
14 Rittal PSM MID measuring module for CMC III
7.4.4 Messages on the main display
Not only the fault messages (see section 4 "Testing
and rectification") but for over- or undershooting the
set limit values, also the associated messages are
output in the main display (fig. 10, item 6)
– Voltage(P’X‘) High Alarm: upper alarm limit value for
voltage is overshot
– Voltage(P‘X‘) High Warning: upper warning limit val-
ue for voltage is overshot
– Voltage(P‘X‘) Low Warning: lower warning limit value
for voltage is undershot
– Voltage(P‘X‘) Low Alarm: lower alarm limit value for
voltage is undershot
– Current(P‘X‘) High Alarm: upper alarm limit value for
current is overshot
– Current(P‘X‘) High Warning: upper warning limit val-
ue for current is overshot
– Current(P‘X‘) Low Warning: lower warning limit value
for current is undershot
– Current(P‘X‘) Low Alarm: lower alarm limit value for
current is undershot
– Neutral Current High Alarm: upper alarm limit value
for neutral-conductor current is overshot
– Neutral Current High Warning: upper warning limit
value for neutral-conductor current is overshot
– Neutral Current Low Warning: lower warning limit
value for neutral-conductor current is undershot
– Neutral Current Low Alarm: lower alarm limit value
for neutral-conductor current is undershot
7.5 Operation of the CMC III Processing Unit
from the web site
The Observation tab is used to make all settings for
the individual components of the PSM MID measuring
module, such as limit values for warning and alarm
messages.
To do so, first select the PSM-MID-M32 entry in the
left-hand tree structure.
In the following sections 7.5.1 "Device" to 7.5.3 "Circuit
2", only those parameters for which you can make
changes are described in detail. There are also dis-
play values used only for information purposes.
7.5.1 Device
General settings for the PSM MID measuring module
are made at the "Device" level.
Tab. 5: Settings in the "Device" level
Parameters that provide detailed information about
the PSM MID measuring module, such as the version
of the deployed software and hardware, are also dis-
played. You should have such information available,
in particular to permit fast troubleshooting for queries
with Rittal.
7.5.2 Circuit 1
Settings for infeed 1 are performed at the "Circuit 1"
level. You can choose between two display possibili-
ties:
Tree representation: This allows targeted and fast
access to individual parameters.
Tabular representation: This provides a fast over-
view of all actual measured values of the selected
infeed.
If after selection of the "Circuit 1" level, the lower-level
"Unit", "Phase 1", etc. entries are displayed (fig. 5,
item 1), switch to the tabular representation as follows:
Click the coloured "graphic" symbol suffixed to the
Circuit 1 entry in the form of a stylised diagram
(fig. 5, item 2).
Fig. 5: Tree representation:
The display changes to the tabular representation
(fig. 6) and all actual measured values for infeed 1 can
be viewed at a glance.
Note:
When the "Esc" key is pressed, the change
is not not accepted.
Note:
The designation "P’X‘" in the following listing
is replaced with "P1", "P2" or "P3", depend-
ing on which infeed phase the message is
displayed.
Parameter Explanation
Description Indivdiual description of the
PSM MID measuring module.
Location Installation location of the
PSM MID measuring module.

Rittal PSM MID measuring module for CMC III 15
7 Operation
EN
If after selection of the "Circuit 1" level, the tabular rep-
resentation is preselected, switch to the tree repre-
sentation as follows:
Click the "graphic" symbol shown in various grey
levels suffixed to the Circuit 1 entry (fig. 6, item 1).
Fig. 6: Tabular representation:
The display changes to the tree representation (fig. 5)
and you can access the individual measured and set-
ting values for infeed 1.
To change the setting values for the three phases L1,
L2 and L3 in the selected tabular representation, pro-
ceed as follows:
Set the mouse cursor in the table on the column
header for which you want to change the setting val-
ues (fig. 6, item 2).
An "edit" symbol appears and the mouse cursor
changes to a "hand" symbol.
Click the "edit" symbol.
The "Write Values" dialogue with the parameters of
the selected phase appears.
The following descriptions assume that you have se-
lected the tree representation.
"Unit" main level
You can set the following parameters for infeed 1 in
the "Unit" main level of infeed 1.
Tab. 6: Settings in the "Unit" main level
The following parameters are also displayed for infeed
1, although they do not have any significance for the
PSM MID measuring module:
Tab. 7: Displays in the "Unit" main level
The following parameters are also displayed in the as-
sociated sublevels for infeed 1:
Tab. 8: Displays in the associated sublevels
"Neutral Current" sublevel
You can set the following parameters for the neutral-
conductor current in the "Neutral Current" sublevel:
Note:
The "Current" row and the "Σ" symbol of the
neutral-conductor current are displayed in
the tabular representation.
Note:
You cannot make any changes to the high-
er-level parameters for the "Infeed 1" unit in
the tabular representation.
Parameter Explanation
DescName Individual description of infeed 1.
Parameter Explanation
Mounting
Position
Mounting position of the PSM MID meas-
uring module (always "Horizontal").
Parameter Explanation
Energy Total energy value of infeed 1.
Energy Cus-
tom
Total energy value based on the user-de-
fined counters for the three phases L1, L2
and L3.
Power Total power of infeed 1.
Frequency Frequency of infeed 1.
Parameter Explanation
DescName Individual description of the neutral-con-
ductor current for infeed 1.
SetPtHigh-
Alarm
Upper limit of the current value for which
an alarm message is issued.
SetPtHigh-
Warning
Upper limit of the current value for which
a warning message is issued.
SetPtLow-
Warning
Lower limit of the current value for which
a warning message is issued.
SetPtLow-
Alarm
Lower limit of the current value for which
an alarm message is issued.

7 Operation
EN
16 Rittal PSM MID measuring module for CMC III
Tab. 9: Settings in the "Neutral Current" sublevel
The following parameters are also displayed for the
neutral-conductor current:
Tab. 10: Displays in the "Neutral Current" sublevel
"Phase 1" main level
You can make changes for the voltage, the current
and a user-defined energy counter ("Active Custom
Energy") of the phase L1 in the "Phase 1" main level of
infeed 1.
"Voltage" sublevel
Tab. 11: Settings in the "Voltage" level
The following parameters are also displayed for the
voltage value of phase L1:
Tab. 12: Displays in the "Voltage" level
"Current" sublevel
Tab. 13: Settings in the "Current" level
The following parameters are also displayed for the
current value of phase L1:
Tab. 14: Displays in the "Current" level
"Active Custom Energy" sublevel
Tab. 15: Settings of the "Active Custom Energy" level
The following parameters are also displayed for phase
L1 in the associated sublevels:
Hysteresis If one of the upper limit values is overshot
(SetPtHigh) or one of the lower limit val-
ues is undershot (SetPtLow), a warning
or an alarm is issued immediately. For a
hysteresis of x %, the warning or the
alarm clears for undershooting an upper
limit value or for overshooting a lower limit
value only after a difference of the
x/100*limit value to the limit value.
Parameter Explanation
Value Actual value of the neutral-conductor cur-
rent.
Status Actual status of the neutral-conductor
current.
Parameter Explanation
DescName Individual description of the voltage val-
ue for infeed 1.
SetPtHigh-
Alarm
Upper limit of the voltage value of phase
L1 for which an alarm message is issued.
SetPtHigh-
Warning
Upper limit of the voltage value of phase
L1 for which a warning message is is-
sued.
SetPtLow-
Warning
Lower limit of the voltage value of phase
L1 for which a warning message is is-
sued.
SetPtLow-
Alarm
Lower limit of the voltage value of phase
L1 for which an alarm message is issued.
Hysteresis If one of the upper limit values is overshot
(SetPtHigh) or one of the lower limit val-
ues is undershot (SetPtLow), a warning
or an alarm is issued immediately. For a
hysteresis of x%, the warning or the alarm
clears for undershooting an upper limit
value or for overshooting a lower limit val-
ue only after a difference of
x/100*limit value to the limit value.
Parameter Explanation
Parameter Explanation
Value Actual voltage value of phase L1.
Status Actual status of the voltage value.
Parameter Explanation
DescName Individual description of the current value
for infeed 1.
SetPtHigh-
Alarm
Upper limit of the current value of phase
L1 for which an alarm message is issued.
SetPtHigh-
Warning
Upper limit of the current value of phase
L1 for which a warning message is is-
sued.
SetPtLow-
Warning
Lower limit of the current value of phase
L1 for which a warning message is is-
sued.
SetPtLow-
Alarm
Lower limit of the current value of phase
L1 for which an alarm message is issued.
Hysteresis If one of the upper limit values is overshot
(SetPtHigh) or one of the lower limit val-
ues is undershot (SetPtLow), a warning
or an alarm is issued immediately. For a
hysteresis of x%, the warning or the alarm
clears for undershooting an upper limit
value or for overshooting a lower limit val-
ue only after a difference of
x/100*limit value to the limit value.
Parameter Explanation
Value Actual current value of phase L1.
Status Actual status of the current value.
Parameter Explanation
Value User-defined energy counter. The opera-
tor can reset this counter to the value "0".

Rittal PSM MID measuring module for CMC III 17
7 Operation
EN
Tab. 16: Displays in the "Phase 1" level
7.5.3 Circuit 2
Settings for infeed 2 are performed at the "Circuit 2"
level. The representations match fully those for infeed
1 (see section 7.5.2 "Circuit 1").
Parameter Explanation
Power
Factor
Actual power factor
Active
Power
Actual active power
Apparent
Power
Actual apparent power
Reactive
Power
Actual reactive power
Active
Energy
Actual active energy
Apparent
Energy
Actual apparent energy
Note:
You can make the same settings for phases
L2 and L3 in the appropriate levels as for
phase L1.

8 Inspection and maintenance
EN
18 Rittal PSM MID measuring module for CMC III
8 Inspection and maintenance
8.1 Safety instructions
– Prior to performing any work on the PSM MID meas-
uring module, the unit must be disconnected from
the power supply and protected against being
switched on again.
– The unit does not need to be opened and so prohib-
ited.
8.2 Work to be performed
8.2.1 Inspection
The system must be checked regularly for its com-
plete correct functioning. Rittal recommends a regular
function test when required. The intervals between the
tests should be no longer than one year.
8.2.2 Cleaning
Clean the unit in regular intervals using a lightly
moistened cloth.
8.2.3 Maintenance
Because the unit is largely maintenance-free, the
maintenance of the unit is largely limited to the "in-
spection" and "cleaning" tasks.
8.2.4 Recalibration
After expiration of the calibration end date printed on
the measuring module, the unit must be recalibrated if
it is still to be deployed for billing purposes.
If necessary, contact Rittal for a recalibration of the
unit.
8.2.5 Test procedure
To test the unit, an adaptor kit can be obtained from
Rittal (see section 13 "Customer service addresses").
With this adaptor kit, under reference conditions on a
suitable calibration rig (normally obtainable from a
standards bureau), the flashing rhythm of the LEDs,
and so the complete unit, can be tested using the MID
displays (fig. 4, item 2 or item 9).
Note: Risk of damage!
Do not use aggressive substances such
as cleaner's naphtha, acids, etc., for
cleaning as they may cause damage to
the plastic surface.

Rittal PSM MID measuring module for CMC III 19
9 Storage and disposal
EN
9 Storage and disposal
9.1 Storage
If the device is not used for a long period, Rittal rec-
ommends that it is disconnected from the mains pow-
er supply and protected from dampness and dust.
9.2 Disposal
Because the PSM MID measuring module consists
primarily of the "housing" and "circuit board" compo-
nents, the device must be sent to the electronic recy-
cling for disposal.

10 Testing and rectification
EN
20 Rittal PSM MID measuring module for CMC III
10 Testing and rectification
10.1 Wrong cable combination
This error message is displayed when you use differ-
ent types of connection cables for the inputs and out-
puts on a PSM MID measuring module (e.g. a 32 A
variant at the input and a 16 A variant at the output).
Ensure that you use only the appropriate connection
cables on a PSM MID measuring module.
10.2 Wrong cable type
This error message is displayed when you use incor-
rect connection cables on a PSM MID measuring
module (cables for the 32 A variant on a 16 A device
or cables for the 16 A variant on a 32 A device).
Ensure that you use only the appropriate connection
cables on a PSM MID measuring module.
10.3 Other possible error sources
Under some circumstances, one of the two above-
mentioned error messages is displayed although you
have used the correct connection cable. This can be
the case when the voltage supply to the device at the
"Infeed 1" connection has already been established
and you then want to connect further cables.
In this case, disconnect the voltage supply to the
PSM MID measuring module.
Connect all required cables.
Finally, establish the voltage supply at the "Infeed 1"
connection.
Alternatively, you can also acknowledge the error
message by briefly changing the circuits in the config-
uration menu.
Change the "Disp. Circuit" setting in the configura-
tion menu to "Source 1" (see section 7.4.1 "Settings
using the configuration menu").
Then change the "Disp. Circuit" setting to the appro-
priate entry for the actual connection configuration.