Electrex FEMTO 96 Manuel d'installation - Page 3

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Note n.1

3PH-3W-2CT 2 phases 3 wires, triangle

3PH-4W

3 phases 4 wires, Star

2PH-2W

2 phases 2 wires, biphase

1PH-2W

1 phase 2 wires, monophase

Note n.2

POWERS

Integration time of the average value (AVG) and peak value (MD) for

power (da 1 a 60 minuti)

CURRENTS

Integration time of the average value (AVG) and peak value (MD) for

current (da 1 a 60 minuti)

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.

1-OF-3

Consider also the 2 following registers of the selected one in "MEAS" .

Works on a ﬁ xed max or min threshold with delay and applicable hysteresis.

If one of the three register exceed the threshold the alarm goes on. "AVG"

parameter is not used.

3-OF-3

Consider also the 2 following registers of the selected one in "MEAS".

Works on a ﬁ xed max or min threshold with delay and applicable hysteresis.

When all the three register exceed the threshold the alarm goes on. "AVG"

parameter is not used.

DERIV

"THRE" parameter becomes a % value, "AVG" parameter is used. The

instant value applied to the alarm on "MEAS" is compared with its value

mediated obtained on the basis of the time set on "AVG". When the

instantaneous value combined alarm differs in more (setting "Max") or less

(setting "MIN") from the average value (" AVG ") of the percentage set on

"THRE" the alarm goes on. With delay and applicable hysteresis.

UNBAL

Consider 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 different 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.

Note n.4

MAX

Alarm setting in excess compared with the established conditions.

With the exception of "UNBAL".

MIN

Alarm setting in decrease compared with the established conditions.

With the exception of "UNBAL"

Note n.5

MEAS

indicates which register (and thus measure) the alarm is related.

See table n.1 input register.

THRE

Alarm threshold in absolute value, with the exception made for "DERIV"

and "UNBAL" in which the value inserted becomes a percentage.

Note n.6

AVG

Parameter to be used only in "DERIV" mode. Is the duration of the refe-

rence (in seconds) used to create a reference value for the istantaneous

readings.

Note n.7

NORMAL

Physical output of the alarm excited during the duration of the alarm. It

restores automatically

HOLD

Output remains excited until manual reset made via Modbus

PULSE-L

Output generate a 500ms impulse when the alarm goes on.

PULSE-S

Output generate a 100ms impulse when the alarm goes on.

Note n.8

PULSE

Enables exit function as impulsive

ALARM

Enables exit function as alarm

REMOTE

Enables function output via protocol Modbus

Normally open

Normally closed

Note n.9

P-IMP

Imported Active Power (Energy)

QL-IMP

Imported Reactive Inductive Power (Energy)

QC-IMP

Imported Reactive Capacitive Power (Energy)

S-IMP

Imported Apparent Power (Energy)

P-EXP

Exported Active Power (Energy)

QL-EXP

Exported Reactive Inductive Power (Energy)

QC-EXP

Exported Reactive Capacitive Power (Energy)

S-EXP

Exported Apparent Power (Energy)

Note n.10

YES

Referred to CT primary

Referred to CT secondary

Note n.11

ALLARME 1 Alarm related to the physical output: DIGITAL OUT 1 (DO1, terminal 8)

ALLARME 2 Alarm related to the physical output: DIGITAL OUT 2 (DO2, terminal 9)

ALLARME 3 Only MODBUS alarm

ALLARME 4 Only MODBUS alarm

MESSAGE "CFG ERROR"

During the set up operation a "CFG ERROR" message could appear. This means

that some wrong parameters are typed. To restore the factory default settings use the

following procedure (RESTORE FACTORY SETTING) seguire la seguente procedura:

CFG ERROR

Once this procedure is done the meter is conﬁ gured with its factory default settings.

Stored data will remain after the restore operation.

Subject to modiﬁ cation without notice. Edition 02-07-2008

RESTORE

FACTORY SETTINGS

YES

DIGITAL INPUTS AND OUTPUTS CONNECTION

(only for the version PFA6C11-12)

Com

DO1

(-)

(+)

Digital Inputs

Supply voltage (external):

from 10 to 30

Vdc

Current consumption:

from 2 to 10mA

Max. count frequency

10 or 100Hz

N.B. For gas meters a galvanic separation is

needed per ATEX standards

INPUT & OUTPUTS CONNECTION EXAMPLE

Es.

Input M8 Supervisor

S1 S2 S1 S2 S1 S2

CURRENT INPUTS

VOLTAGE INPUTS

U1 U2 U3

FROM:

- TRANSDUCER WITH

CLEAN CONTACT

- GME

- SWITCH STATUS

- ALARM STATUS

S1 S2 S1 S2 S1 S2

CURRENT INPUTS

VOLTAGE INPUTS

U1 U2 U3

ALARM SET UP EXAMPLE

To ensure that the exit "digital out 1" remain excited for the alarm duration (latching) when

average active power (MEAS 344) exceeds the value of 100 kW, hysteresis, 5% and

latency of 5 seconds set the parameters such as table:

MODE (note n.2)

TYPE (note n.3)

ALARM 1 / A

MEAS (note n.4)

THRE (note n.4)

HYST

DELAY

ALARM 1 / B

AVG (note n.5)

OUT (note n.6)

MODE

DIGITAL OUT 1

POLARITY

To ensure that the exit "digital out 1" remain excited for the alarm duration (latching) when

average active power (MEAS 344) goes down the value of 90 kW, hysteresis, 5% and

latency of 5 seconds set the parameters such as table:

MODE (note n.2)

TYPE (note n.3)

ALARM 2 / A

MEAS (note n.4)

THRE (note n.4)

HYST

DELAY

ALARM 2 / B

AVG (note n.5)

OUT (note n.6)

MODE

DIGITAL OUT 2

POLARITY

DO2

(+)

(-)

Digital outputs (optocoupled NPN

transistor type for DIN 43864)

Maximum applicable voltage:

Maximum switchable current:

1 2 C

3 4

(-) (+) (+)

7 8

AUX

IN/OUT

(-)

Comune

(+)

Out PLC

Es. PLC

POWER

RS-485

SUPPLY

A B

230 Vac

7 8

AUX

IN/OUT

Power

Supply

POWER

Max

RS-485

27 Vdc

SUPPLY

27 mA

A B

(-)

(+)

Normal, 1-OF-3, 3-OF-3, DERIV, UNBAL

MAX, MIN

Controlled measure. See table n.1 for register

selection

Threshold value

1...100 (%)

1...99 (seconds)

Normal, Hold, Pulse-L, Pulse-S

PULSE, ALARM, REMOTE

NO, NC

Normal, 1-OF-3, 3-OF-3, DERIV, UNBAL

MAX, MIN

Controlled measure. See table n.1 for register

selection

Threshold value

1...100 (%)

1...99 (seconds)

Normal, Hold, Pulse-L, Pulse-S

PULSE, ALARM, REMOTE

NO, NC

27 Vdc

27 mA

NORMAL

MAX

344

100000

NORMAL

ALARM

NORMAL

MIN

344

90000

NORMAL

ALARM