Electrex EXA 96 User manual

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INSTALLATION GUIDE
Further documentation may be downloaded from our web site www.electrex.it.
This document is owned by company AKSE that reserves all rights.
DECLARATION OF CONFORMITY
Akse hereby declares that its range of products complies with the following directives EMC
2014/30/EU, 2014/35/EU and complies with the following product’s standard CEI EN
61326 - Ed. 2.0 (2012) – IEC 61326 - Ed. 2.0 (2012) CEI EN 61010 Ed. 3 (2010) – IEC
61010 Ed. 3 (2010). The product has been tested in the typical wiring confi guration and
with peripherals conforming to the EMC directive and the LV directive.
COPYRIGHT
Electrex is a trademark of Akse S.r.l. All rights reserved.
It is forbidden to duplicate, adapt, transcript this document without Akse written
authorization, except when regulated accordingly by the Copyright Laws.
WARRANTY
This product is covered by a warranty against material and manufacturing defects for a 24
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
• Firmware upgrades
Akse 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.
RETURN AND REPAIR FORMALITIES
Akse accepts the return of instruments for repair only when authorized in advance. The
transport costs are at customer charge.
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 fl at fee to account for checking and testing time irrespective of the warranty
terms.
SAFETY
This instrument was manufactured and tested in compliance with IEC 61010-1 CAT III -
300V class 2 standards for operating voltages up to 300 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 qualifi ed, 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:
• There is clearly visible damaged.
• The instrument no longer functions.
• After lengthy storage in unfavorable conditions.
• After serious damage occurred during transport
The instruments must be installed in respect of all the local regulations.
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 identifi ed 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 outputs and the options operate at low voltage level; they cannot be powered by
any unspecifi ed external voltage.
• The application of currents not compatible with the current inputs levels will damage
to the instrument.
LEGEND OF PARAMETERS AND SYMBOLS
UVoltage THD Total Harmonic Distortion
LN Phase Neutral AVG Average (rolling) value
LL Phase Phase MD Maximum Demand
ICurrent MIN Minimum values (10 cycles time base)
In Neutral current MAX Maximum values (10 cycles time base)
PActive Power +Imported value
QReactive Power -Exported value
SApparent Power Er L Inductive
PF Power Factor Er C Capacitive
FFrequency tTime counter
Ea Active Energy CPulse count
Er Reactive Energy MAIN Total
Es Apparent Energy P1,P2,P3 Partial 1,2,3
LIFE Device lifetime
Keep pressed for 2 seconds to display:
- Type of instrument
- Firmware version
- Serial number
- RS485 address
READINGS
MEASURE LIST TABLE
(The parameters available vary according to instrument confi guration)
UIP/PF CNT
ULN I P Ea + MAIN Er + L MAIN Es + MAIN C1 MAIN t MAIN
ULL I ∑ P ∑ Ea - MAIN Er - L MAIN Es - MAIN C2 MAIN t P1
ULN THD I THD P AVG + Ea + Fase Er + C MAIN Es + Fase C3 MAIN t P2
ULL THD I MAX P AVG - Ea - Fase Er - C MAIN Es - Fase C4 MAIN t P3
ULN MIN I AVG P MD + Ea + P1 Er + L Fase Es + P1 C1 P1 t LIFE
ULL MIN I MD PMD - Ea - P1 Er - L Fase Es - P1 C2 P1
ULN MAX Q Ea + P2 Er + C Fase Es + P2 C3 P1
ULL MAX Q ∑ Ea - P2 Er - C Fase Es - P2 C4 P1
Q AVG + Ea + P3 Er + L P1 Es + P3 C1 P2
Q AVG - Ea - P3 Er - L P1 Es - P3 C2 P2
Q MD + Er + C P1 C3 P2
Q MD - Er - C P1 C4 P2
S Er + L P2 C1 P3
S ∑ Er - L P2 C2 P3
S AVG + Er + C P2 C3 P3
S AVG - Er - C P2 C4 P3
S MD + Er + L P3
S MD - Er - L P3
PF Er + C P3
PF ∑ Er - C P3
ENTER
UIP/PF CNT ESCMENU
PRODUCT CODE
VERSION
SERIAL
ADDRESS
PFAXXXX-XX-X
X.XX XXXX
XXXXXX
027
EXA 96
96 RS485
MODELS
PFAEC11-62-B
MECHANICAL CHARACTERISTICS
Case Self-extinguishing plastic material class V0
Protection degree IP40 on front panel, IP20 terminals side
Size 96 x 96 x 72 mm
VOLTAGE INPUTS
Direct insertion Up to 300 Vrms phase-neutral or 520 Vrms phase to phase
With external VT: Primary: programmable (max. 400 kV)
Secondary: programmable (max. 300 V)
Overload: 900 Vrms phase to phase for 1 sec
Aux. power supply 230/240Vac +/- 10% 50/60Hz
Self consumption: < 2,5VA

SETUP SEQUENCE
PAGE PARAMETERS VALUES AVAILABLE DEFAULT
PASSWORD
PASSWORD 0000 ... 9999 0000
BASIC SETTINGS
WIRING (note n.1) 3P4W, 2P2W, 1P2W, 3I, 3P3W-B-3U,
3P4W-B-3U, 3P3W-B, 3P4W-B, 3P3W 3P4W
QUADRANTS 2Q, 4Q 2Q
CT PRIMARY 1...10000 00005
CT SECONDARY 1...5 5
VT PRIMARY 1...400000 000001
VT SECONDARY 1...999 001
P-AVG WINDOW (note n.2) 1...60 (minutes) 15
I-AVG WINDOW (note n.2) 1...60 (minutes) 08
WIRING
QUADRANTS
CT PRIMARY
CT SECONDARY
VT PRIMARY
VT SECONDARY
P-AVG WINDOW
I-AVG WINDOW
3P4W
2Q
00005
5
000001
001
15
08
BASIC SETTINGS
COMUNICATION
ADDRESS 1 ... 247 027
BAUDRATE 2400, 4800, 9600, 19200, 38400 38400
DATA BITS 7, 8 8
PARITY N = none, E = even, O = odd N
STOP BITS 1 o 2 2
SILENT TIME 0...1000 (ms) (steps of 10ms) 0100
ADDRESS
BAUDRATE
DATA BITS
PARITY
STOP BITS
SILENT TIME
027
38400
8
N
2
0100
COMUNICATION
ALARM 1 (note n.7)
MODE (note n.3) NORMAL, UNBAL%, UNBAL,
3-OF-3, 1-OF-3 NORMAL
DIRECTION (note n.4) MAX, MIN MIN
DATA ADDRESS (note n.5) Controlled measure. See table n.1 for
register selection 276
THRESHOLD (note n.5) Threshold value +0.000
HYSTERESIS 1...99 (%) 01
ON DELAY 1 sec ...99 minutes 01 SEC
OFF DELAY 1 sec ...99 minutes 01 SEC
OUT MODE (note n.6) NORMAL, HOLD NORMAL
MODE
DIRECTION
DATA ADDRESS
THRESHOLD
HYSTERESIS
ON DELAY
OFF DELAY
OUT MODE
NORMAL
MIN
276
+0.000
01
01 SEC
01 SEC
NORMAL
ALARM 1
ALARM 2 (see ALARM 1)
ALARM 3 (see ALARM 1)
ALARM 4 (see ALARM 1)
S0-1
ENERGY (note n.9) EA, ER L, ER C, ES, EA+, ER L+, ER C+, ES+,
EA-, ER L-, ER C-, ES-
EA
PRIMARY (note n.10) NO, YES NO
WEIGHT 0.01 ... 9.99 (K,M) +0.10
WIDTH 10 ... 1000 mS 0030
ENERGY
PRIMARY
WEIGHT
WIDTH
EA
NO
+0.10
0030
S0 - 1
OPTICAL TEST (note n.8)
LED-1 OFF, S0-1, S0-2, S0-3, S0-4 S0-1
LED-1 S0-1
OPTICAL TEST
DISPLAY
CONTRAST 0 ... 15 06
PASSWORD 0000
LIGHT HIGH 1 ... 15 10
LIGHT LOW 0 ... 15 03
CONTRAST
PASSWORD
LIGHT HIGH
LIGHT LOW
06
0000
10
03
DISPLAY
FACTORY RESET
NO, YES NO
CLEAR REGISTERS
COUNTER-PHASE NONE, ALL NONE
MD POWER NONE, ALL NONE
MD CURRENT NONE, ALL NONE
PEAKS NONE, ALL NONE
COUNTER-MAIN NONE, ALL NONE
COUNTER-P1 NONE, ALL NONE
COUNTER-P2 NONE, ALL NONE
COUNTER-P3 NONE, ALL NONE
COUNTER-PHASE
MD POWER
MD CURRENT
PEAKS
COUNTER-MAIN
COUNTER-P1
COUNTER-P2
COUNTER-P3
NONE
NONE
NONE
NONE
NONE
NONE
NONE
NONE
CLEAR REGISTERS
DEVICE SETUP
DESCRIPTION OF KEYS
UIP/PF CNT
Click Modify parameter Modify parameter Go to previous value Go to next value
Click
2 sec
Go to previous page Go to next page
ENTER THE SETUP / SAVE EXIT THE SETUP WITHOUT SAVING
Push for
2 seconds ENTER
MENU Push for
2 seconds
ESC
TABLE n.1 - Part of ModBus Registers; for e.g. alarm confi guration.
(Contact us for the full list).
REGISTER DESCRIPTION SYMBOL UNIT
218 Frequency of U1N f [Hz]
220 Phase to Neutral Voltage, RMS Amplitude U1N [V]
222 Phase to Neutral Voltage, RMS Amplitude U2N [V]
224 Phase to Neutral Voltage, RMS Amplitude U3N [V]
226 Phase to Phase Voltage, RMS Amplitude U12 [V]
228 Phase to Phase Voltage, RMS Amplitude U23 [V]
230 Phase to Phase Voltage, RMS Amplitude U31 [V]
232 Phase Current, RMS Amplitude I1 [A]
234 Phase Current, RMS Amplitude I2 [A]
236 Phase Current, RMS Amplitude I3 [A]
238 Neutral Current, RMS Amplitude IN [A]
240 Phase Active Power ( Imp/ Exp) P1 [W]
242 Phase Active Power ( Imp/ Exp) P2 [W]
244 Phase Active Power ( Imp/ Exp) P3 [W]
246 Phase Reactive Power ( Imp/ Exp) Q1 [var]
248 Phase Reactive Power ( Imp/ Exp) Q2 [var]
250 Phase Reactive Power ( Imp/ Exp) Q3 [var]
252 Phase Apparent Power S1 [VA]
254 Phase Apparent Power S2 [VA]
256 Phase Apparent Power S3 [VA]
258 Phase Power Factor ( Imp/ Exp) PF1 [-]
260 Phase Power Factor ( Imp/ Exp) PF2 [-]
262 Phase Power Factor ( Imp/ Exp) PF3 [-]
270 Phase to Neutral Voltage, Mean RMS Amplitude Ul [V]
272 Phase to Phase Voltage, Mean RMS Amplitude UD [V]
274 Three phase current, RMS Amplitude I [A]
276 Total active power ( Imp/ Exp) PS [W]
278 Total reactive power ( Imp/ Exp) QS [var]
280 Total apparent power SS [VA]
282 Total power factor ( Imp/ Exp) PFS [-]
332 Phase Current, RMS Amplitude, AVG I1 AVG [A]
334 Phase Current, RMS Amplitude, AVG I2 AVG [A]
336 Phase Current, RMS Amplitude, AVG I3 AVG [A]
344 Total imported active power, AVG P Imp AVG [W]
346 Total imported inductive power, AVG Qind Imp AVG [var]
348 Total imported capacitive power, AVG Qcap Imp AVG [var]
350 Total imported apparent power, AVG S Imp AVG [VA]
352 Total exported active power, AVG P Exp AVG [W]
354 Total exported inductive power, AVG Qind Exp AVG [var]
356 Total exported capacitive power, AVG Qcap Exp AVG [var]
358 Total exported apparent power, AVG S Exp AVG [VA]

NOTE n.1
3P4W 3 phases 4 wires Star
2P2W 2 phases 2 wires Two-phases
1P2W 1 phases 2 wires Single phase
3I 3 phases 2 wires 3 Current Inputs single phase o three phases
3P3W-B-3U 1 phases 3 wires Balanced triangle
3P4W-B-3U 1 phases 4 wires Balanced star
3P3W-B 1 phases 2 wires Balanced triangle
3P4W-B 1 phases 2 wires Balanced star
3P3W 2 phases 3 wires Triangle
NOTE n.2
POWERS Integration time of the average value (AVG) and peak value (MD) for
Power (from 1 to 60 minutes).
CURRENTS Integration time of the average value (AVG) and peak value (MD) for
Current (from 1 to 60 minutes).
NOTE n.3
NORMAL Classic Alarm with reference to a fi xed threshold or to maximum and
minimum delay and applicable hysteresis. “AVG” parameter is not used.
UNBAL% Considers also the 2 following registers of the selected one in “MEAS”.
“THRE” parameter becomes a % value. Alarm goes on when one of the
three register is diff erent from the percentage set on “THRE” comply with
the higher value of the three read register if “MAX” is set on “TYPE”, or
comply with the lower value of the three register if “MIN” is set on “TYPE”
With delay and applicable hysteresis.
UNBAL Considers also the 2 following registers of the selected one in “MEAS”.
“THRE” parameter becomes a value. Alarm goes on when one of the
three register is diff erent from the percentage set on “THRE” comply with
the higher value of the three read register if “MAX” is set on “TYPE”, or
comply with the lower value of the three register if “MIN” is set on “TYPE”
With delay and applicable hysteresis.
3-OF-3 Considers also the 2 following registers of the selected one in “MEAS”.
It operates on a fi xed max or min threshold with delay and applicable
hysteresis. When all the three registers exceed the threshold the alarm
goes ON. “AVG” parameter is not used.
1-OF-3 Considers also the 2 following registers of the selected one in “MEAS”.
It operates on a fi xed max or min threshold with delay and applicable
hysteresis. If one of the three registers exceeds the threshold the alarm
goes ON. “AVG” parameter is not used.
NOTE n.4
MAX Alarm setting in excess or in decrease compared with the predefi ned
conditions.
With the exception of “UNBAL and UNBAL%”.
MIN
NOTE n.5
MEAS Indicates which register (measure) the alarm is related to.
See table N.1 Input Register.
THRE Alarm threshold in absolute value, with the exception made for “UNBAL”
in which the value inserted becomes a percentage.
NOTE n.6
NORMAL Alarm remains active during the duration of the event. It restores auto-
matically.
HOLD Alarm remains active until the manual reset via Modbus.
NOTE n.7
ALARM 1 MODBUS alarm (Associated with output 1 if present)
ALARM 2 MODBUS alarm (Associated with output 2 if present)
ALARM 3 MODBUS alarm (Associated with output 3 if present)
ALARM 4 MODBUS alarm (Associated with output 4 if present)
NOTE n.8
LED-1
OFF The instrument’s LED remains off
S0-1, 2, 3, 4 The instrument’s LED fl ashes according to the
selected pulse generator
NOTE n.9
EA Power (Energy) Active Imported / Exported
ER L Power (Energy) Reactive Inductive Imported / Exported
ER C Power (Energy) Reactive Capacitive Imported / Exported
ES Power (Energy) Apparent Imported / Exported
EA+ Power (Energy) Active Imported
ER L+ Power (Energy) Imported Inductive Reactive
ER C+ Power (Energy) Imported Reactive Capacitive
ES+ Power (Energy) Apparent Imported
EA- Power (Energy) Active Exported
ER L- Power (Energy) Exported Inductive Reactive
ER C- Power (Energy) Capacitive Reactive
ES- Power (Energy) Apparent Exported
NOTE n.10
YES Referred to the primary of the current transformer (CT)
NO Referred to the secondary of the current transformer (CT)
ALARM SETUP EXAMPLE
Alarm (latching) when the average active power (MEAS 344) exceeds the value of 100
kW, hysteresis of 5% and delay of 5 seconds; set the parameters as in the table:
ALARM 1 (note n.7)
MODE (note n.3) NORMAL, UNBAL%, UNBAL,
3-OF-3, 1-OF-3 NORMAL
DIRECTION (note
n.4) MAX, MIN MAX
DATA ADDRESS
(note n.5) Controlled measure. See table n.1 for register selection 344
THRESHOLD (note
n.5) Threshold value +100.0 K
HYSTERESIS 1...99 (%) 05
ON DELAY 1 sec ...99 minutes 05 SEC
OFF DELAY 1 sec ...99 minutes 01 SEC
OUT MODE (note
n.6) NORMAL, HOLD NORMAL
ANALOG OUTPUT
Analog output
10 19 C Common (negative)
11 20 1 Output 1 (positive)
12 21 2 Output 2 (positive)
For loads with impedance less than or
equal to 250 ohms.
For loads with higher impedance of 250
ohms it is necessary to include in series an
external power supply. The voltage to be
applied is given by the following formula:
V = (R-250) x 0.027
(E.g. with an impedance of 1 Kohm, the
voltage to be applied is:
(1000-250) x 0.027= 20.25 Vdc
12 201910 11
AUX IN/OUT
2113 22
AO1 AO2
230 V~
24V =
N L
- +
12 201910 11
AUX IN/OUT
2113 22
AO1 AO2
Max 250 ohm R max = (Vdc / 0.027) + 250
Vdc R max
5 435
9 583
12 694
24 1138
NOTE: A
MEAS Indicates which register (and thus measure) the alarm is related to.
See Table N.1 (Input registers).
NOTE: B
MIN Associated scale value starts at 0 and 4 mA
MAX Full scale value associated with 20 mA
SETUP SEQUENCE
PAGE PARAMETERS VALUES AVAILABLE DEFAULT
ANALOG OUT 1
MEAS
MAX
ANALOG OUT 1
MODE
MIN
200
0.000
4-20
0.000
DATA ADDRESS
(note A) Controlled measure. See table n.1 for register selection 000
MODE 0-20, 4-20 4-20
MIN (note B) 0.000
MAX (note B) 0.000
ANALOG OUT 2 (see ANALOG OUT 1)

PHASE SEQUENCE
1-2-3 Correct sequence
1-3-2 Incorrect sequence
----- Indicates that the device is not able to defi ne the sequence
Please consider that:
• only the voltage sequence is detected;
• the detection considers the hypothesis that the tensions are sinusoidal (or at least
slightly distorted) and belonging to a symmetrical (or almost) triad;
• independently from the insertion 3W/4W, it is considered exclusively the sign of
voltage 2 and 3 in the zero-crossing of voltage for phase 1 - it is not calculated the
eff ective phase of the voltage fundamentals;
• the phase sequence is indicated with the “L123”, “L132”, “L—“ symbols next to
frequency, in the voltages displaying page.
It is assumed:
L1 is the voltage with phase 0°
L2 is the voltage with phase 240° (in delay to L1)
L3 is the voltage with phase 120° (in advance to L1)
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1
L2
L3
P1 P2
S1 S2
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1
L2
L3
P1 P2
S1 S2
P1 P2
S1 S2
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1
L2
L3
P1 P2
S1 S2
P1 P2
S1 S2
P1 P2
S1 S2
3P3W / 3P4W / 3I
3P3W1P2W / 2P2W
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1
L2
L3 P1 P2
S1 S2
3P3W-B / 3P3W-B-3U
3P4W-B / 3P4W-B-3U
1P2W
2P2W / 3P3W-B
Use cables with max cross-section of 2,5 mm2 if stranded, 4 mm2 if rigid and connect them
to the clamps marked VOLTAGE INPUT on the instrument according to the applicable
diagrams that follow.
VOLTAGE CONNECTION
U1 U2 U3 N
VOLTAGE INPUT
L
N
U1 U2 U3 N
VOLTAGE INPUT
L1
L2
L3
N
U1 U2 U3 N
VOLTAGE INPUT
L1
L2
L3
U1 U2 U3 N
VOLTAGE INPUT
L1
L2
L3
N
U1 U2 U3 N
VOLTAGE INPUT
L
N
3P4W / 3P4W-B-3U / 3I
3P3W / 3P3W-B-3U
3I
3P4W-B
U1 U2 U3 N
VOLTAGE INPUT
L1
N
L2
L3
CURRENT CONNECTION
Connect the CT outputs to the terminals marked I1, I2, I3 (CURRENT INPUT) of the
instrument according to the applicable diagrams that follow.
Note: Scrupulously respect the matching of phase between the voltage signals and current
signals. Failure to comply with this correspondence and connection diagrams gives rise to
measurement errors.
The instrument is equipped with a separate power supply. The power supply terminals
are numbered (17) and (18). Use cables with max cross-section of 2,5 mm2 if stranded,
4 mm2 if rigid.
POWER SUPPLY
SERIAL LINE CONNECTION
POWER SUPPLY
1 230/240Vac +/- 10% 50/60Hz
2 F: 500 mA T
Max cable length: 1000 meters.
RS485
Address 27
Baud rate 38400
Parity None
Bit of Stop 2
1
2
VOLTAGE INPUTS POWER
SUPPLY RS-485
1817V1 V2 V3 N AB
T
VOLTAGE INPUTS POWER
SUPPLY RS-485
1817V1 V2 V3 N AB
T
akse srl Via Aldo Moro, 39 42124 Reggio Emilia Italy
Tel. [phone] Fax [phone] [email protected] www.akse.it
P.I. 01544980350 R.E.A. 194296 Cap. Soc. Euro 85.800,00 i.v.
Subject to modifi cation without notice.
Edition 2019 01 28 ENG0264
Made in Italy
Pensato, progettato e prodotto in Italia
Engineered and manufactured in Italy