Electrex x3m-D User manual

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X3M-D
FLASH-D
Energy data manager
&
Electric Energy Analyzer
Installation Manual
Unless specifically itemized, this instructions manual is common
to both the instruments type X3M-D and Flash-D.
Version 5 dated June 20th 2005 (PRELIMINARY VERSION)
The document can be modified without prior information.

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Index
INTRODUCTION .............................................................................................................................. 3
1.1 COPYRIGHT........................................................................................................................ 3
1.2 WARRANTY ........................................................................................................................3
1.3 RETURN AND REPAIR FORMALITIES .............................................................................. 3
1.3.1 RE-SHIPPING OF REPAIRED PRODUCT .................................................................. 3
1.3.2 Return Material Authorization (RMA form) ................................................................... 4
2Safety......................................................................................................................................... 5
2.1 Operator safety .................................................................................................................... 5
3Mounting .................................................................................................................................... 6
3.1 Instruments size (mm) ......................................................................................................... 6
3.2 Optional modules size (mm) ................................................................................................ 6
3.3 Fixing and blocking .............................................................................................................. 6
4Wiring diagrams......................................................................................................................... 7
4.1 Power supply ....................................................................................................................... 7
4.2 Measurement connections................................................................................................... 7
4.2.1 Voltage connection........................................................................................................ 7
4.2.2 Current connection ........................................................................................................ 7
4.2.3 4W Star connection (4 wire) .......................................................................................... 8
4.2.4 3W Delta connection (3 wire) ........................................................................................ 9
4.2.4.1 Connection with 2 CTs on L1 and L3 ................................................................... 9
4.2.4.2 Connection with 2 CTs on L1 and L2 ................................................................. 10
4.2.5 2 Wire connection (single phase) ................................................................................ 10
4.2.6 2 Wire connection (bi-phase) ...................................................................................... 11
4.3 Outputs connection............................................................................................................ 11
4.4 Optional modules connection............................................................................................. 12
4.4.1 RS485 Option.............................................................................................................. 12
4.4.2 RS232 Option.............................................................................................................. 13
4.4.3 Dual 4-20 mA analog output option............................................................................. 13
5Instrument use ......................................................................................................................... 14
5.1 Instrument set up ...............................................................................................................14
5.1.1 Set up sequence ......................................................................................................... 15
5.1.2 Configuration procedure.............................................................................................. 16
5.1.2.1 Electrical system configuration........................................................................... 16
5.1.2.2 Communication characteristics configuration..................................................... 18
5.1.2.3 Digital Outputs configuration .............................................................................. 18
5.1.2.4 Pulse characteristics configuration..................................................................... 19
5.1.2.5 Alarm configuration ............................................................................................ 20
5.1.2.6 4-20 mA Analog Outputs configuration. ............................................................. 22
5.1.2.6.1 Alarms and 4-20 mA output configuration for the average (AVG) parameters .............. 23
5.1.2.7 Clock calendar configuration (for X3M-D only) .................................................. 24
5.1.2.8 Contrast adjustment ........................................................................................... 25
5.1.2.8.1 Time zones ..................................................................................................................... 26
5.1.3 Reset Procedure ......................................................................................................... 30
5.2 Readings............................................................................................................................ 31
5.2.1 Readings selection keys.............................................................................................. 31
5.2.1.1 Voltage and Frequency readings ....................................................................... 31
5.2.1.2 Current readings ................................................................................................ 31
5.2.1.3 Powers ............................................................................................................... 32
5.2.1.4 Power Factor...................................................................................................... 34
5.2.1.5 Energies ............................................................................................................. 34
5.2.1.6 Tariff Energies and Tariff Maximum Demand (for X3M-D only) ........................ 35
5.2.1.7 Calendar Clock (for X3M-D only) and Life Time................................................. 36

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INTRODUCTION
We thank you for choosing an Electrex instrument
We invite you to carefully read this instructions manual for the best use of the X3M D and Flash D
instruments.
1.1 COPYRIGHT
Electrex S.r.l. All rights are reserved.
It is forbidden to duplicate, adapt, transcript this document without Electrex written authorization, except
when regulated accordingly by the Copyright Laws.
Copyright© 2003-2004
1.2 WARRANTY
This product is covered by a warranty against material and manufacturing defects for a period of 36 months
period from the manufacturing date
The warranty does not cover the defects that are due to:
• Negligent and improper use
• Failures caused by atmospheric hazards
• Acts of vandalism
• Wear out of materials
Electrex reserves the right, at its discretion, to repair or substitute the faulty products
The warranty is not applicable to the products that will result defective in consequence of a negligent and
improper use or an operating procedure not contemplated in this manual.
1.3 RETURN AND REPAIR FORMALITIES
Electrex accepts the return of instruments for repair only when authorized in advance. For instrument
purchased directly, the repair authorization must be requested to Electrex directly by using the enclosed
RMA form. We recommend otherwise to contact your local distributor for assistance on the return/repair
formalities. In both the cases, the following information must be supplied:
•Company full data
•Contact name for further communication
•Product description
•Serial number
•Description of the returned accessories
•Invoice / Shipping document number and date
•Detailed description of the fault and of the operating condition when the fault occurred
The Electrex repair lab will send the authorization number to the customer directly or to the distributor as per
applicable case.
The RMA authorization number shall be clearly marked on the packaging and on the return transport
document.
WARNING: Failure to indicate the RMA number on the external packaging will entitle our warehouse to
refuse the delivery upon arrival and to return the parcel at sender’s charge.
The material must be shipped:
-within 15 working days from the receipt of the return authorization number
-free destination i.e. all transport expenses at sender’s charge.
-to the following address: Electrex S.r.l.
Via Claudia 96 - 41056 Savignano s/P (MO) - Italy
Atn. Repair laboratory
-the units covered by warranty must be returned in their original packaging.
1.3.1 RE-SHIPPING OF REPAIRED PRODUCT
The terms for re-shipment of repaired products are ex-works, i.e. the transport costs are at customer charge.
Products returned as detective but found to be perfectly working by our laboratories, will be charged a fixed
fee (40.00 Euro + VAT where applicable) to account for checking and testing time irrespective of the
warranty terms.

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1.3.2 Return Material Authorization (RMA form)
Request for the authorization number for the return of goods
Date:
Company:
Contact name:
TEL: FAX:
Product description:
Serial number:
Description of the returned accessories (if any):
Original purchase Invoice (or Shipping document) number and date.
NB: The proof of purchase must be provided by the customer. Failure to complete this area will automatically void all warranty.
Detailed description of the malfunction and of the operating conditions when the fault occurred
Tick off for a quotation
Should a product be found by our laboratories to be perfectly working, a fixed amount of 40 Euro (+VAT if applicable) will be charged to
account for checking and testing time irrespective of the warranty tems.
Space reserved to ELECTREX
R.M.A. No.
The RMA number shall be clearly indicated on the external packaging and on the shipping document:. Failure to observe this
requirement will entitle the ELECTREX warehouse to refuse the delivery.

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2 Safety
This instrument was manufactured and tested in compliance with IEC 1010 class 2 standards and in
accordance with VDE 0110 group B insulation standards for operating voltages up to 250 VAC rms phase to
neutral.
In order to maintain this condition and to ensure safe operation, the user must comply with the indications
and markings contained in the following instructions:
•When the instrument is received, before starting its installation, check that it is intact and no damage
occurred during transport.
•Before mounting, ensure that the instrument operating voltages and the mains voltage are
compatible then proceed with the installation.
•The instrument power supply needs no earth connection.
•The instrument is not equipped with a power supply fuse; a suitable external protection fuse must be
foreseen by the contractor.
•Maintenance and/or repair must be carried out only by qualified, authorized personnel
•If there is ever the suspicion that safe operation is no longer possible, the instrument must be taken
out of service and precautions taken against its accidental use.
•Operation is no longer safe when:
1) There is clearly visible damage.
2) The instrument no longer functions.
3) After lengthy storage in unfavorable conditions.
4) After serious damage occurred during transport
The instruments X3M-D and Flash-D must be installed in respect of all the local regulations.
2.1 Operator safety
Warning: Failure to observe the following instructions may lead to a serious danger of death.
-During normal operation dangerous voltages can occur on instrument terminals and on
voltage and current transformers. Energized voltage and current transformers may generate
lethal voltages. Follow carefully the standard safety precautions while carrying out any
installation or service operation.
-The terminals of the instrument must not be accessible by the user after the installation. The
user should only be allowed to access the instrument front panel where the display is
located.
-Do not use the digital outputs for protection functions nor for power limitation functions. The
instrument is suitable only for secondary protection functions.
-The instrument must be protected by a breaking device capable of interrupting both the
power supply and the measurement terminals. It must be easily reachable by the operator
and well identified as instrument cut-off device.
-The instrument and its connections must be carefully protected against short-circuit.
Precautions: Failure to respect the following instructions may irreversibly damage to the instrument.
-The instrument is equipped with PTC current limiting device but a suitable external
protection fuse should be foreseen by the contractor.
-The outputs and the options operate at low voltage level; they cannot be powered by any
unspecified external voltage.
-The application of currents not compatible with the current inputs levels will damage to the
instrument.

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3 Mounting
3.1 Instruments size (mm)
6 DIN rail modules
3.2 Optional modules size (mm)
2 DIN rail modules.
3.3 Fixing and blocking
The instrument (as well as the optional modules) are fixed to the DIN rail by means of the spring clip located
on the rear side of the unit

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4 Wiring diagrams
4.1 Power supply
The instrument is fitted with a separate power supply with extended operating
range. The power supply terminals are numbered (10) and (11).
Use cables with max cross-section of 2,5 mm2.
4.2 Measurement connections
4.2.1 Voltage connection
Use cables with max cross-section of 2,5 mm2and connect them to the terminals marked VOLTAGE INPUT
on the instrument according to the applicable diagrams that follow.
4.2.2 Current connection
It is necessary to use external CTs with a primary rating adequate to the load to be metered and with a 5A
secondary rating. The number of CTs to be used (1, 2 or 3) depends upon the type of network.
Connect the CT output(s) to the terminals marked CURRENT INPUT of the instrument according to the
applicable diagrams that follow.
Use cables with cross-section adequate to the VA rating of the CT and to the distance to be covered. The
max cross-section for the terminals is 2,5 mm2.
N.B. The CT secondary must always be in short circuit when not connected to the instrument in order to
avoid damages and risks for the operator.
Warning: THE PHASE RELATIONSHIP AMONG VOLTAGE AND CURRENT SIGNALS MUST BE
CAREFULLY RESPECTED. ALL DISREGARD OF THIS RULE OR OF THE WIRING
DIAGRAM LEADS TO SEVERE MEASUREMENT ERRORS.

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4.2.3 4W Star connection (4 wire)
Low voltage 3 CTs High voltage 3 PTs 3 CTs
Configuration 3P 4W Configuration 3P 4W
Low Voltage 1 CT (symmetrical and balanced load)
Configuration 3P-b 4W

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4.2.4 3W Delta connection (3 wire)
Connection with 3 CTs Connection with 1 CT
Low Voltage 3 CTs (unbalanced load) Low Voltage 1 CT (symmetrical and balanced
load)
Configuration 3P 3W Configuration 3P-b 3W
4.2.4.1 Connection with 2 CTs on L1 and L3
Low Voltage 2 CTs High Voltage 2 PTs 2 CTs
Configuration 3P 3W Configuration 3P 3W

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4.2.4.2 Connection with 2 CTs on L1 and L2
Low Voltage 2 CTs High Voltage 2 PTs 2 CTs
Configuration 3P 3W Configuration 3P 3W
4.2.5 2 Wire connection (single phase)
Low Voltage (phase-neutral) 1 CT
Configuration 1P 2W

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4.2.6 2 Wire connection (bi-phase)
Low Voltage (phase-phase) 1 CT
Configuration 2P 2W
4.3 Outputs connection
The instrument is equipped with two opto-isolated transistor outputs rated 27 Vdc, 27 mA (DIN 43864
standards).
The outputs working mode is set by default to operate as pulse output proportional to the Active energy
(output 1) and to the Reactive energy (output 2). They support an output rate of 1.000 pulses per kWh (or
kvarh) referred to the instrument input range without any CT and PT multiplier.
In order to calculate the energy value of each pulse the following formula must be considered.
kWhPulse KK
KPTCT
P/
×
=Where: Kp= energy of each pulse; KCT = CT ratio ; KPT = PT ratio ;
Pulse/kWh = Pulse rate
Example: CT = 100/5; PT = 20.000/100 pulsekWhKP/4
1000
20020 =
×
=or kWh = Pulse count / 4
Other pulse rate settings may be however programmed as described in the instrument set up section.
The operating mode of the digital outputs may also be changed to work as alarm output or as remote output
device controlled by the Modbus protocol as described in the instrument set up section.

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4.4 Optional modules connection
The optional modules shall be placed beside of the instrument and shall be connected to the same by
means of the cable supplied with.
The optional modules are self-supplied; the instrument recognises the type of option(s) connected and the
applicable programming menu will automatically appear when necessary.
CN1 connector: suitable for the RS485 or RS232 optional modules
CN2 connector: suitable for the 4-20 mA optional module or for the Hardware up-date key
4.4.1 RS485 Option
RS485 pin out
1 A +
2 B -
3 Shield

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4.4.2 RS232 Option
RS232 pin out
1 DSR (Handshake to DTE)
2 CTS (Handshake to DTE)
3 RD (Data to DTE)
4 TD (Data from DTE)
5 RTS (Handshake from DTE)
6 GND
4.4.3 Dual 4-20 mA analog output option
4-20 mA pin out
1 CH1 Channel 1
2 CH2 Channel 2
3 Source Common +
NB. The outputs are self powered; do not use external power supply.

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5 Instrument use
5.1 Instrument set up
The set up procedure allows to program the instrument operating parameters.
Entry in the programming procedure is obtained by pressing the PROGRAM button that is located on the
upper right side of the instrument.
The key allows to scroll the various entry fields within a set up page as well as to pass to the next page
upon scrolling all the fields of one page.
The and keys allow the modification of the flashing field being currently selected.
The content of a field can be either numeric or a parameter controlling the device behavior.
The key advances to the next page, the key returns to the previous page
By pressing the PROGRAM button (while in any configuration page) the menu is exited and the configuration
entries so far performed are saved.
Program button

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5.1.1 Set up sequence
Within the first page of the instrument set up menu, the following functions are available too.
- a pressure of the key opens the energy counters reset page.
- a pressure of the key opens the reset page of the average and maximum demand.
Here below the set up page formats and the programming flow diagram
NOTE: all new setting and/or alteration of the instrument programming parameters
become effective only upon exit from the programming session by pressing the
PROGRAM button located on the upper right side of the instrument.

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5.1.2 Configuration procedure
5.1.2.1 Electrical system configuration
The first programming page shows the configuration of the type of electrical system.
The first selection sets the type of electrical system and the type of wiring used:
-3 phase 4 wire Star system [3Ph/4W]
-3 phase 3 wire Delta system [3Ph/3W],
-balanced 3 phase 4 wire system (1 CT only) [3Ph-b/4W],
-balanced 3 phase 3 wire system [3Ph-b/3W],
-single phase system [1Ph/2W]

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-bi-phase system [2Ph/2W].
The second selection sets whether the operating mode is:
-Import only [Import (2Q)]
-Import-Export [Imp/Exp (4Q)].
The instrument is set by default to [3Ph/4W]and Import [Import (2Q)] mode. This configuration
automatically compensates all possible CT output reversal.
The following page enables to set the type of voltage measurement.
If the voltage measurement is direct in low voltage, select [Low]; the menu passes directly to the currents
setting page.
If the voltage measurement is made on the HT side and/or via a voltage transformer, select [High]and
proceed to the next page for setting the Volatge transformer (PT) primary and secondary values
Enter the PT rated primary and secondary values indicated on the PT label; the values taken by
measurement are unsuitable to this purpose.
The primary and the secondary values must be integers, the ratio can also be fractional.
The instrument is set by default to [Low]
After the voltage setting, the current set up page is prompted for programming the CT values; it requires the
entry of the CT primary rating and the CT secondary rating.
Ensure to enter the CT rated primary and secondary values as indicated on the CT label.
When using 2 or 3 current transformers ensure that all the current transformers have the same ratings.
The instrument is set by default to [00005/5].
The next page allows to set the integration time for calculating the Average and the Maximum Demand.
The value is expressed in minutes in a 1 to 60 min. range.
The instrument supports two average values: one calculated by using the sliding window method and the
other one calculated on a fixed time basis. The time setting that is programmed by keyboard is the average
demand integration time with the sliding window method. The Maximum Demand too is calculated on the
sliding window basis.
The integration time on a fixed time basis is used for storing the energy data however this setting is available
only as a MODBUS register via serial port setting.

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5.1.2.2 Communication characteristics configuration
This menu appear only upon connection to the instrument of an RS-485 or an RS-232 optional module.
The setting of the RS485 communication characteristics requires to scroll the programming pages with two
keys;
The key advances to the next page, the key returns to the previous page
The first page is the following:
This page enables the setting of respectively:
-communication speed
-number of data bits
-parity
-stop bits
All these data are correlated depending upon the stop bit value.
Additional parameters regarding the MODBUS communication protocol may be set in the next page:
-Mode: it may be configured to RTU or to
ASC (ASCII) mode.
-Slave Address
-Transmission delay; it stands for the time
delay the instrument will wait prior to reply
to a data query. It is expressed in
milliseconds, the default value is 100 msec
and a 0 setting is also possible.
5.1.2.3 Digital Outputs configuration
The instrument is equipped with 2 digital outputs that are set by default to operate as pulse outputs
proportional to P∑(output 1) and Q∑(output 2) at a rate of 1.000 pulses per kWh (or kvarh) referred to the
instrument range without any CT and PT multiplier.
The operating mode of digital outputs may be changed to operate as alarm output or as remote output
device controlled by the Modbus protocol.
When operating on the Modbus protocol, in order to ensure a protection to the outputs in case of
communication failure, it is possible to configure a watchdog timer (programmable from 0 to 60 minutes; 0 =
disabled).
The following entry fields are prompted (example for output 1):
(1) Digital out number being programmed.
(2) Contact: it configures the rest state of the output transistor.
n.c. normally closed or n.o. normally open:

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(3) Mode of operation:
PULSE (default setting) for operation as pulse output
ALARM for operation as alarm contact output
Remote for operation as remote output device controlled via Modbus
The procedure for programming the digital output 2 is identical.
5.1.2.4 Pulse characteristics configuration
If the PULSE selection is operated, the following page is shown allowing the configuration of the pulse
characteristics:
Where:
(1) Pulse output number being programmed.
(2) Pulse duration in mSec; programmable from 50 up to 900 in steps of 10.
(3) Parameter selected for pulse transmission: It may be selected among:
P imp Import active power
P exp Export active power
QLimp Reactive power (inductive) with import active power
Qcimp Reactive power (capacitive) with import active power
QLexp Reactive power (inductive) with export active power
Qcexp Reactive power (capacitive) with export active power
S imp Apparent power with import active power
S exp Apparent power with export active power
(4) Pri: the pulses take into account the CT and PT ratio and are referred to their primary readings
Sec: the pulses are referred to the CT (and PT) secondary reading without any multiplier .
(5) Pulse weight: programmable from 0,1 Wh up to 1 MWh through all the intermediate steps.
Example: 1.0 Wh = 1000 pulses/kWh.

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5.1.2.5 Alarm configuration
The Instrument is equipped with two alarms that are triggered by a programmable threshold on anyone of
the measured parameters.
The types of alarm available are: maximum, minimum and 1-of-3.
A minimum alarm is triggered when the selected parameter is lower than the alarm threshold.
A maximum alarm is triggered when the selected parameter exceeds the alarm threshold.
A 1-of-3 alarm is triggered when anyone of the phase readings, whichever the phase involved, trespasses
the alarm threshold – this alarm can be either maximum or minimum. On a 1-of-3 current alarm, the
threshold is expressed as percentage (rather than a value) that stands for the unbalance between the
phases. The alarm therefore triggers when the percent difference between two of the three phases exceeds
the threshold; it is calculated as 100 x (Imax – Imin)/Imax.
All alarms allow also the setting of an hysteresys and a delay time.
The hysteresys (in percent) sets the difference between the triggering threshold and the end threshold (this
prevents repeated alarm triggering when the reading oscillates around the trigger value). Example: a 5%
hysteresys on a threshold of 100, triggers the alarm when the reading exceeds 100 but it will switch off the
alarm when the reading becomes lower than 95.
The delay time sets a time delay for triggering on the alarm after its actual occurrence (or triggering off after
its actual end).
The set up of each alarm is performed on two programming pages prompting the following entry fields
(example for Alarm 1).
(A) Alarm No. and page No. identification (AL1 = alarm 1 that may be associated to output 1)
(1) Parameter type applying to Alarm 1. The possible choices are:
None Disabled
U Voltage
f Frequency
I Current
P Active Power
Q Reactive Power
S Apparent Power
PF Power Factor
U THD Total Harmonic Distortion (Voltage)
I THD Total Harmonic Distortion (Current)
(2) Parameter definition: The possible choices are:
LN Average star value (applicable to voltage, current and THD only).
LL Average system value (applicable to voltage and THD only).
N Neutral value (applicable to current only)
ΣThree phase value (applicable to active, reactive and apparent power only)