ST N30U User Manual

1

DIGITAL PANEL METER
N30U TYPE

USER’S MANUAL

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3

Contents

1. APPLICATION AND METER DESIGN ........................................5

2. METER SET ..................................................................................6

3. BASIC REQUIREMENTS, OPERATIONAL SAFETY .................7

4. INSTALLATION ............................................................................ 8

5. SERVICE ....................................................................................11

6. RS-485 INTERFACE ..................................................................28

7. UPDATING OF SOFTWARE ...................................................... 42

8. ERROR CODES .........................................................................44

9. TECHNICAL DATA ....................................................................45

10. ORDER CODES .........................................................................48

11. MAINTENANCE AND GUARANTEE .........................................50

User’s manual for meters with firmware version  2.00

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5

1. APPLICATION AND METER DESIGN

The N30U meter is a programmable digital panel meter destined for
measurements of signals originating from standard sensors destined
for temperature measurements and for the measurement of analog
standard signals applied in automation. Additionally, the meter enables
the indication of the current time. The readout field is a LED display,
which allows the exposition of results in colours: red, green and orange.
The measured input signal can be arbitrary converted by means of a
21-point individual characteristic.

Features of the N30U meter:

l display colour individually programmed in three intervals,
l programmable thresholds of displayed overflows,
l 2 NOC relay alarms operating in 6 modes,
l 2 switched relay alarms with a switching contact operating

in 6 modes (option),

l signaling of measuring range overflow,
l automatic setting of the decimal point,
l programming of alarm and analog outputs with the reaction on the

selected input quantity (main or auxiliary input),

l real-time clock with the function of the clock supply support in case

of the meter supply decay,

l programmed averaging time – function of walking window with the

averaging time up to 1 hour,

l monitoring of set parameter values,
l locking of introduced parameters by means of a password,
l recount of the measured quantity on the base of the 21-point

individual characteristic,

l service of the interface with MODBUS protocol in the

RTU mode (option),

l conversion of the measured value into a standard – programmable

current or voltage signal (option),

l highlight of any measuring unit acc. to the order,

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2. METER SET

The set is composed of:

- N30U meter ........................................................................1 pc

- User’s manual ....................................................................1 pc

- Guarantee card ..................................................................1 pc

- Set of clamps to fix the meter in the panel .........................4 pcs

- Set of labels with units .......................................................2 pcs

- Seal ....................................................................................1 pc

When unpacking the meter, please check whether the type and execu­tion code on the data plate correspond to the order.

l signaling of alarm operation – switching the alarm on causes the

highlight of the output number,

l galvanic separation between connections: alarm, supply, input,

analog output, output of the auxiliary supply, RS-485 interface.

Protection grade from frontal side: IP65
Meter overall dimensions: 96 x 48 x 93 mm (with terminals).
The meter casing is made of plastic.

Fig. 1 View of the N30U Digital Meter

7

3. BASIC REQUIREMENTS,
OPTIONAL SAFETY

In the safety service scope, the N30U meter meets the requirements of
the EN 61010-1 standard.

Mentioned below applied symbols mean:

- especially important , one must acquaint with this
information before connecting the meter. The non­ observance of notices marked by this symbol can
occasion injures of the personnel and a damage of the
instrument.

- One must take note of this when the instrument is
working inconsistently to the expectations. Possible
consequences if disregarded.

Observations concerning the operational safety

· All operations concerning transport, installation, and commissioning
as well as maintenance, must be carried out by qualified, skilled
personnel, and national regulations for the prevention of accidents
must be observed.

· Before switching the meter on, one must check the correctness of
connections.

· Do not connect the meter to the network through an autotransformer.

· Before removing the meter housing, one must switch the supply off
and disconnect measuring circuits.

· The meter is designed to be installed and exploited in
electromagnetic industrial environment conditions.

· When connecting the supply, one must remember that a switch
or a circuit-breaker should be installed in the building. This switch
should be located near the device, easy accessible by the opera­ tor, and suitably marked as an element switching the meter off.

· Non-authorized removal of the housing, inappropriate use, incorrect
installation or operation, creates the risk of injury to personnel or
meter damage. For more detailed information, please study the
User’s Manual.

8

Fig. 3. Overall Dimensions

Fig. 2. Meter Fixing

4. INSTALLATION

The meter has separable strips with screw terminals, which enable the
connection of external wires of 1.5 mm2 cross-section for input signals
and 2.5 mm2 for other signals.

One must prepare a hole of 92

+0,6

´ 45

+0,6

mm in the panel, which the

thickness should not exceed 6 mm.
The meter is adapted to be mounted in a panel. The meter must be

introduced from the panel front with disconnected supply voltage. Be­fore the insertion into the panel, one must check the correct placement
of the seal. After the insertion into the hole, fix the meter by means of
clamps (fig.2).

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4.1. Lead-out of Signals

Signals led out on the meter connectors are presented on the fig. 4.
Circuits of successive groups of signals are separated between them.

Fig. 4. Description of Signals on Connection Strips

· 0...10 V – input for the measurement ±10 V voltage,

· GND – mass for the 0...10 V input and 0...20 mA input,

· 0...20 mA – input for the measurement of ±20 mA current,

· 60 mV TC – input for the measurement of 60 mV voltage, or for the
connection of RTD sensors,

· R, PT – input for the resistance measurement or for the connection
of RTD sensors. The compensation wire has been marked by
a broken line,

· OC – open collector output of npn type– signaling of the measuring
range overflow.

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4.2. Examples of Connections

An example of the N30U meter connection to different signals is pre­sented on the fig. 5.

Fig. 5. Ways of the meter Connection

For the connection of input signals in environments with a high noise
level, one must apply shielded wires.

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5. SERVICE

5.1. Display Description

Fig. 6. Description of the Meter Frontal Plate

5.2. Messages after Switching the Supply on

After switching the supply on, the meter displays the meter name N30U
and next the program version in the „r x.xx” shape – where x.xx is the
number of the current program version or the number of a custom-made
execution. Next, the meter carries out measurements and displays the
value of the input signal. The meter sets up automatically the decimal
point position when displaying the value. The format (number of places
after the decimal point) can be limited by the user.

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5.3. Functions of Buttons

- Acceptation button:

Þ entry in programming mode (hold down ca 3 seconds)
Þ moving through the menu – choice of level,
Þ entry in the mode changing the parameter value,
Þ acceptation of the changed parameter value,
Þ stop the measurement – when holding down the button, the result

is not updated. The measurement is still carried out.

- button increasing the value:

Þ display of maximal value, The pressure of the button causes the
display of the maximal value during ca 3 seconds.

Þ entry in the level of the parameter group,
Þ moving through the chosen level,
Þ change of the chosen parameter value – increasing the value.

- Button to change the digit:

Þ display of minimal value, The pressure of the button causes the
display of the maximal value during ca 3 seconds.

Þ entry in the level of parameter group,
Þ moving through the chosen level,
Þ change of chosen parameter value – shift on the next digit,

- resignation button:

Þ entry in the menu monitoring the meter parameters (by holding
down ca 3 seconds),

Þ exit from the menu monitoring meter parameters,
Þ resignation of the parameter change,
Þ absolute exit from the programming mode (by holding down

ca 3 seconds).

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The pressure of the button combination and holding
them down ca 3 seconds, causes the reset of alarm signaling. This

operation acts only when the support function is switched on.

The pressure of the

button combination causes the era-

sing of the minimal value.

The pressure of the

button combination causes the era-

sing of the maximal value.

The pressure and holding down the

button ca 3 seconds cau-

ses the entry in the programming matrix. The programming matrix can

be protected by the safety code.

The pressure and holding down the

button during 3 seconds

causes the entry in the menu monitoring meter parameters. One must

move through the monitoring menu by means of and

buttons. In this menu, all programmable meter parameters are only ava-
ilable for readout. In this mode, the menu Ser is not available. The exit

from the monitoring menu is carried out by means of the button.
In the monitoring menu, parameter symbols are displayed alternately
with their values.

The service algorithm of the meter is presented on the fig. 7.

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Fig. 7. Service Algorithm of the N30U Meter

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5.4. Programming

The pressure of the button and holding it down through ca 3
seconds causes the entry to the programming matrix. If the entry is pro­tected by a password, then the safety code symbol SEC is displayed
alternately with the set value 0. The write of the correct code causes the
entry in the matrix, the write of an incorrect code causes the display of
the ErCod symbol. The matrix of transitions to the programming mode
is presented on the fig. 8. The choice of the level is made by means of
the

button, however the entry and moving through the para-

meters of the chosen level is carried out by means of the

and

buttons. Parameter symbols are displayed alternately with their
current values. In order to change the value of the chosen parameter,
one must use the

button. For resignation from change, one must

use the

button. In order to exit from the chosen level, one must

chose the ----- symbol and press the

button. To exit from the

programming matrix, one must press the

button during ca 1
second. Then, the symbol End appears for ca 3 seconds and the meter
transits to the display of the measured value. In case of leaving the
meter in the parameter programming mode, the automatic abandon of
the programming mode follows (parameter, and next the menu) after 30
seconds and the meter transits to display the measured value.

5.4.1. Value Change Way of the Selected Parameter

In order to increase the value of the selected parameter, one must
press the

button. A single pressure of the button, causes the
increase of the value of 1. The increase of value when displaying the
digit 9 causes the set of 0 on this digit. The change of the digit follows
after pressing the button. In order to accept the set parameter,
one must hold down the button. Then, the write of the parameter
follows and the display of its symbol, alternately with the new value. The
pressure of the button during the change of the parameter value
will cause the resignation of the write.

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Fig. 8. Programming Matrix.

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Table 1

5.4.2. Changing Floating-Point Values

The change is carried out in two stages (the transition to the next stage
follows after pressing the

button):

1) setting the value from the range -19999M...99999, similarly as for

integral values;

2) setting of the decimal point position (00000., 0000.0, 000.00,

00.000, 0.0000); the

button shifts the decimal point to the

left, however the button shifts the decimal point to the right;

The pressure of the

button during the change of the parameter

value will cause the resignation of the write.

5.4.3. Characteristic of Programmed Parameters

Programmed parameters and the range of their quantity changes are
presented in the table below.

InP 1

Parameter

symbol

Description Range of changes

tYP1

Kind of the connected input
signal

Pt1 – Pt100
Pt5 – Pt500
Pt10 – Pt1000
rEZL – measurement of
resistance up to 400 W
rEZH – measurement of
resistance up to 4000 W
tE-J – J (Fe-CuNi)
tE-h – K (NiCr-NiAl)
tE-n – N (NiCrSi-NiSi)
tE-E – E (NiCr-CuNi)
tE-r – R (PtRh13-Pt)
tE-S – S (PtRh10-Pt)
0_10U – voltage measurement,
range 10 V.
0_20A – current measurement,
range 20mA
0_60n – voltage measurement,
range 60mV.
HOUr – current time.

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Table 2

Ind

Parameter

symbol

Description Range of changes

IndCp

Number of points of the individual
characteristic. For a value lower than 2,
the individual characteristic is switched
off. The number of segments is the
number of points decreased of one.
The individual characteristic is not taken
into consideration in the CountH and
HoUr modes.

1...21

Hn

The point value for which we will expect
Yn (n-point number)

-19999...99999

Yn

Expected value for Xn.

-19999...99999

cd. Table 1

Con

Choice of the measured value
compensation. Concerns only the
work in the mode of temperature
or resistance measurement. The
wire linking the meter with the
sensor defines the resistance
for RTD sensors, however for
thermocouples, the compensa­tion is defined by the cold junc­tion temperature. The choice of a
value beyond the range causes
the switching of the automatic
compensation on.

-19999...99999

Introduction of values:

0..20 W - causes the switching
of the manual compensation on
for the resistance or tempera­ture measurement by means of
RTD (resistance thermometers).

0...60

o

C – causes the switching

of the manual compensation on
for thermocouples.

Cnt1

The measurement time is
expressed in seconds. The result
on the display presents the mean
value counted in the Cnt1 period.
This parameter is not taken into
consideration during the
measurement in counter modes.

1...3600

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dISP

Parameter

symbol

Description Range of changes

d_P

Minimal position of the decimal point
When displaying the measured value

- display format. This parameter is not
taken into consideration during tCountH
and HoUr modes.

0.0000 – 0

00.000 – 1

000.00 – 2

0000.0 – 3
00000 – 4

CoLdo

Display colour, when the displayed
value is ower than CoLLo

rEd – red
grEEn – green
orAnG - orange

CoLbE

Display colour, when the displayed
value is higher than CoLLo and lower
than CoLHi

CoLuP

Display colour when the displayed value
is higher than CoLHi

CoLLo

Lower threshold of colour change

-19999..99999

CoLHi

Upper threshold of colour change

-19999..99999

ovrLo

Lower threshold of display narrowing
Values below the declared threshold
are signaled on the display by the

-----

symbol.

-19999..99999

ovrHi

Upper threshold of display narrowing
Values above the declared threshold
are signaled on the display by the

-----

symbol.

-19999..99999

Table 3

Table 4

ALr1, ALr2, ALr3, ALr4

Parameter

symbol

Description Range of changes

P_A1
P_A2
P_A3
P_A4

Input quantity, steering the alarm.

InP1 – Main input (indicated
value).

HoUr – Real-time clock.

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tYP1
tYP2
tYP3
tYP4

Alarm type. Fig. 11 presents the
graphical imaging of alarm types

n-on – normal (transition from
0 na 1),

n-oFF – normal (transition
from 1 na 0),

on - switched on,

oFF – switched off,

H-on – manually switched

on; till the change time of the
alarm type, the alarm output
remains switched on

H-oFF – manually switched
off; till the change time of
the alarm type the output
alarm remains switched off
for good.

PrL1
PrL2
PrL3
PrL4

Lower alarm threshold.

-19999...99999

PrH1
PrH2
PrH3
PrH4

Upper alarm threshold.

-19999...99999

dLY1
dLY2
dLY3
dLY4

Delay of alarm switching.

0...32400

cd. Table 4

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LEd1
LEd2
LEd3
LEd4

Support of alarm signaling. In
the situation when the support
function is switched on, After the
alarm state retrea, the signaling
diode is not blanked. It signals
the alarm state till its blank­ing moment by means of the

button com­bination. This function concerns
only and exclusively the alarm
signaling thus relay contacts will
operate without support accord­ing to the chosen type of alarm.

oFF – function switched off
on – function switched on

out

Parameter

symbol

Description Range of changes

P_An

Input quantity, which the analog
output has to react on.

InP1 – main input (indicated
value).

Hour – real-time clock.

tyPA

Type of analog output

0_10U – voltage 0...10 V
0_20A – current 0...20 mA
4_20A – current 4...20 mA

AnL

Lower threshold of the analog
output. give the value, on which
we want to obtain the minimal
value of signal on the analog
output.

-19999...99999

AnH

Upper threshold of the analog
output. give the value on which
we want to obtain the maximal
value of signal on the analog
output(10 V or 20 mA).

-19999...99999

Table 5

cd. Table 4

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bAud

Baud rate of the RS485 interface

4.8 – 4800 bit/s

9.6 – 9600 bit/s

19.2 – 19200 bit/s

38.4 – 38400 bit/s

57.6 – 57600 bit/s

115.2 – 115200 bit/s

prot

Type of transmission frame of the
RS-485 interface.

r8n2
r8E1
r8o1
r8n1

Addr

Address in the MODBUS net­work. The write of the value 0
switches the interface off.

0...247

Table 6

SEr

Parameter

symbol

Description Range of changes

SEt

Write of manufacturer’s settings.
The setting of the value YES
causes the write of standard
parameters into the meter.
The value of manufacturer’s
parameters is presented in the
table 7.

no – do nothing.
YeS – causes the write of

manufacturer’s settings.

SEC

Introduction of a new password.
The introduction of the value 0
switches the password off.

0...60000

HOUR

Setting of the current time.
The introduction of a wrong time
cancels the introduction of time.
The introduced value is not
taken.

0,00...23,59

unIt

Highlight of the unit.

On – unit highlight switched
on.

Off – unit highlight switched
off.

cd. Table 5

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tESt

Display test. The test consists in
a successive lighting up of digital
display segments. Alarm diodes
and unit highlighting diodes
should be lighted.

YeS – causes the test start

The pressure of the
button ends the test.

no – do nothing.

5.4.4 Individual Characteristic

N30U meters can recalculated the measured value into any value
thanks to the implemented individual characteristic function. The indivi­dual characteristic rescales the input signal measured according to the
set characteristic. The way of the individual characteristic interaction on
the meter operation has been presented on the fig. 9.

Fig. 9. Action of the Individual Characteristic.

The user can introduce maximally twenty functions through giving inter­vals and expected values for successive points.

The programming of the individual characteristic consists on the defi­nition of the number of points which the input function will be linearized
by. On must remember that the number of linearizing functions is of one

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Rys. 10. Individual Characteristic.

During the function approximation, one must remember that for the ap­proximation of functions strongly differing from the linear characteristic,
higher the number of linearizing segments, smaller the error related to
the linearization.

If measured values are smaller than H1, recalculations will be made
on the base of the first straight line calculated on the base of points
(H1,Y1) an (H2,Y2). However, for values higher than Hn (where n – the
last declared measured value) the value to display will be calculated
on the base of the last assigned linear function.

Note: All introduced points of the measured value (Hn) must be arran-

smaller than the number of points. Next, one must program successive
points by giving the measured value (Hn) and the expected value cor­responding to it, – value which has to be displayed (Yn). The graphic in­terpretation of the individual characteristic is presented on the fig. 10.

25

ged in the increasing sequence, such to preserve the following depen­dence:

H1<H2<H3...<Hn

If the above is not fulfilled, the individual characteristic function will be
automatically switched off (will not be realized) and a diagnostic flag
will be set in the status register.

a) n-on b) n-off

c) on d) off

Fig. 11. Alarm Types: a) n-on, b) n-off c) on d) off.

5.4.5 Alarm types

The N30U meter is equipped with 2 alarm outputs with NOC contact
(make contact) and two alarm outputs with NOC/NCC contact (make
and break contact) (option). Each of alarms can work in one of the six
modes. The work of alarms in modes is presented in the fig. 12: n-on, n­off, on, off. Two remaining modes: h-on and h-off mean suitably, always
switched on and always switched off. These modes are destined for the
manual simulation of alarm states.

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Caution !

l In case of alarms of n-on, n-off, on, off types the write of PrL>PrH will

cause the alarm switching off.

l In case of a measuring range overflow, the reaction of the relays is

compatible with written PrL, PrH, tYP parameters. In spite of the dis­played overflow, the meter still carries out the measurement.

l The meter controls currently the value of the introduced parameter

at the moment. In case when the introduced value overflows the upper
range given in the table 1, the meter will make automatically the change
into the maximal value. Similarly, in case when the introduced value
overflows the lower change range given in the table 1, the meter will
make automatically the change into the minimal value.

5.4.6 Display Format

The N30U meter adapts automatically the display format (precision) to
the value of measured quantity. So that the function could be fully used,
one must choose the format 0.0000, then the meter will display the me­asured value with the possible highest accuracy. This function does not
operate for the time display, where the format is set automatically. The
current time (mode HOUr) is displayed in the 24 hours’ format, in the
shape hh.mm, where hh – current hour, and mm – current minute.

Caution: Remember that the display with a higher resolution is not al­ways desired, it can conduct to a deterioration of the indication stabi­lity.

27

Parametru symbol Level in the matrix

Standard value

tYP1 1

Pt1

Con 1 0

Cnt1 1 1

indCP 2 no

H0 2 0

Y0 2 0

H1 2 100

Y1 2 100

... ... ...

Hn 2 (n-1)*100

Yn 2 (n-1)*100

d_P 3 00000

CoLdo 3 grEEn

CoLbE 3 orAng

CoLuP 3 rEd

CoLLo 3 5000

CoLHi 3 8000

ovrLo 3 -19999

ovrHi 3 99999

P_A1, P_A2,

P_A3, P_A4

4, 5, 6, 7 InP1

tYP1, tYP2,

tYP3, tYP4

4, 5, 6, 7 h-off

PrL1, PrL2,

PrL3, PrL4

4, 5, 6, 7 1000

Table 7

5.5. Manufacturer’s Parameters

Standard settings of the N30U meter are presented in the table 7.
These settings can be restored by means of the meter menu through

the choice of the option Set from the menu Ser.

28

PrH1, PrH2,

PrH3, PrH4

4, 5, 6, 7 2000

dLY1, dLY2,
dLY3, dLY4,

4, 5, 6, 7 0

LEd1, LEd2,

LEd3, LEd4

4, 5, 6, 7 oFF

P_An 8 InP1

tYPA 8 0_10U

AnL 8 0

AnH 8 99999

bAud 8 9.6

prot 8 r8n2

Addr 8 1

SEt 9 no

SEC 9 0

HOUR 9 Not defined

unit 9 off

tESt 9 off

6. INTERFACE RS-485

N30U programmable digital meters have serial links in RS-485 stan­dards for the communication in computer systems and with other de­vices fulfilling Master function. An asynchronous communication cha­racter protocol MODBUS has been implemented on the serial link. The
transmission protocol describes ways of information between devices
through the serial link.

6.1. Connection Way of the Serial Interface

The RS-485 standard allows to a direct communication of 32 devices
on a single serial link of 1200 m long (at baud rate 9600 b/s). For the

29

Fig. 12. Connection Way of the RS-485 interface

connection of a higher quantity of devices, it is necessary to apply ad­ditional intermediate-separating systems (e.g. PD51 converter).

The lead out interface line is presented on the fig. 4. To obtain a cor­rect transmission, it is necessary to connect lines A and B in parallel
with their equivalents in other devices. The connection must be made
through a shielded wire. The wire shield must be connected to the pro­tection terminal in the nearest possible neighbourhood of the meter
(connect the shield only in a single point to the protection terminal).

The GND line serves to the additional protection of the interface line at
long connections. Then, one must connect GND signals of all devices
on the RS-485 bus.

To obtain the connection to the computer, a RS-485 interface card or a
suitable converter is indispensable, e.g. PD51 or PD10.

The connection way of devices is shown on the fig. 12

The designation of transmission lines for the card in the PC computer
depends on the card producer.

30

6.2. Description of the MODBUS Protocol
Implementation

The implemented protocol is in accordance with the PI-MBUS-300 Rev
G of Modicon Company specification.

Set of the serial link parameters of N30U meters in MODBUS protocol:

l meter address: 1...247,

l baud rate: 4800, 9600, 19200, 38400,

57600, 115200 bit/s,

l work mode: RTU with frame format 8n2, 8e1,

8o1, 8n1,

l maximal response time: 100 ms.

The parameter configuration of the serial link consists in the settlement
of the baud rate (bAUd parameter), device address (Addr parameter),
and the format of the information unit (prot parameter)

Notice: Each meter connected to the communication network must
have:

l unique address, different from addresses of other devices connec-

ted to the network,

l identical baud rate and type of information unit.

6.3 Description of Applied Functions

Following MODBUS functions have been implemented in the N30U
meter:

l 03 – readout of the register group
l 04 – readout of input registers
l 06 – write a signle register
l 16 – write of the register group
l 17 – identification of the slave device.

31

6.4 Register map

The register map of the N30U meter is presented below

Notice:

All given addresses are physical addresses. In some computer pro­grams logic addressing is applied, then addresses must be increased
of 1.

Table 8

Range

of address

Value type Description

4000-4049 integer (16 bits) Value placed in a 16-bit register.

7000-7039 float (32 bits)

Value placed in two successive 16­bit registers. Registers include the
same data as 32-bit register from
the area 7500. Registers are only for
readout.

7200-7326 float (32 bits)

Value placed in two successive 16­bit registers. Registers include the
same data as 32-bit register from
the area 7600. Registers can be
read out and written.

7500-7519 float (32 bits)

Value placed in a 32-bit register.
Registers are only for readout.

7600-7663 float (32 bits)

Value placed in a 32-bit register.
Registers can be read out and
written.

32

6.5. Registers for Write and Readout

Table 9

The value is placed in

16-bit registers

write (w)/readout (r)

Input type4000

tYP1

w/r 0...14

Range DescriptionSymbol

0 Pt1 – Pt100

1 Pt5 – Pt500

2 Pt10 – Pt1000

3 rEZL – Resistance, range 400 W

4 rEZL – Resistance, range 4000 W

5 tE-J – J – thermocouple of J type

6 tE-h – K – thermocouple of K type

7 tE-n – N – thermocouple of N type

8 tE-E – E – thermocouple of E type

9 tE-r – R – thermocouple of R type

10 tE-S – S – thermocouple of S type

11 0_10U –

voltage measurement, range

10 V

12 0_20A –

current measurement, range

20 mA

13 0_60n –

voltage measurement, range

60 mV

14 HoUr – current time

Value

Reserved4001 w/r

Reserved4002 w/r

4003

Cnt

w/r 1...3600

Measurement time expressed in seconds. This
time defines the averaging time of the measured
value. The displayed value is the mean value
calculated from the Cnt1 period.

Reserved4004 w/r

Reserved4005 w/r

Reserved4006 w/r

Reserved4007 w/r

33

Value

0 0.0000

1 00.000

2 000.00

3 0000.0

4 00000

4008

IndCp

w/r 1...21

Number of points of the individual characteristic.
For the value 1, the individual characteristic
is switched off. Segments of the individual
characteristic are defined by parameters Xn and
Yn, where n – point number.

Minimal position of the decimal point when
displaying the measured value.

4009

d_P

w/r 0...4

Value

0 red

1 green

2 orange

Display colour when the displayed value is smaller
than coLLo

Description

4010

CoLdo

w/r 0...2

Value

0 red

1 green

2 orange

Display colour when the displayed value is higher

than coLLo and smaller than coLHi

Description

4011

CoLbE

w/r 0...2

Value

Display colour when the displayed value is higher
than coLHi

Description

4012

CoLUp

w/r 0...2

0 red

1 green

2 orange

DescriptionValue

0 Main input

1 clock

Input quantity controlling the alarm

4013

P_a1

w/r 0, 1

Description

34

Support of alarm 1 signaling

4016

LEd1

w/r 0...1

Value

0 Support switched off

1 Support switched on

Description

DescriptionValue

0 Main input

1 clock

Input quantity controlling the alarm

4017

P_a2

w/r 0, 1

Value

0 n-on

1 n-off

2 on

3 off

4 h-on

5 h-off

Type of alarm 2 (description – fig. 6)

Description

4018

tyP2

w/r 0...5

Delay of alarm 2 (in seconds)

4019

dLY2

w/r 0...32400

Support of alarm 2 signaling

4020

LEd2

w/r 0...1

Value

0 Support switched off

1 Support switched on

Description

DescriptionValue

0 Main input

1 clock

Input quantity controlling the alarm

4021

P_a3

w/r 0, 1

Value

0 n-on

1 n-off

2 on

3 off

4 h-on

5 h-off

Type of alarm 1 (description – fig. 6)

Description

4014

tyP1

w/r 0...5

Delay of alarm 1 (in seconds)

4015

dLY1

w/r 0...32400

35

Value

0 n-on

1 n-off

2 on

3 off

4 h-on

5 h-off

Type of alarm 3 (description – fig. 6)

Description

4022

tyP3

w/r 0...5

Delay of alarm 3 (in seconds)

4023

dLY3

w/r 0...32400

Support of alarm 3 signaling

4024

LEd3

w/r 0...1

Value

0 Support switched off

1 Support switched on

Description

DescriptionValue

0 Main input

1 clock

Input quantity controlling the alarm

4025

P_a4

w/r 0, 1

Value

0 n-on

1 n-off

2 on

3 off

4 h-on

5 h-off

Type of alarm 4 (description – fig. 6)

Description

4026

tyP4

w/r 0...5

Delay of alarm 4 (in seconds)

4027

dLY4

w/r 0...32400

Support of alarm 4 signaling

4028

LEd4

w/r 0...1

Value

0 Support switched off

1 Support switched on

Description

Input quantity, which the analog output

has to react on.

4029

P_an

w/r 0, 1

Value

0 Main input

1 clock

Description

36

Type of analog output

4030

tYPa

w/r 0...2

Value

0 voltage input 0...10 V

1 current input 0...20 mA

2 current input 4...20 mA

Description

Baud rate

4031

bAud

w/r 0...5

Value

0 4800 bit/s

1 9600 bit/s

2 19200 bit/s

Description

3 38400 bit/s
4 57600 bit/s
5 115200 bit/s

Meter address. The write of the value 0 causes the

interface switching off

4033

Addr

w/r 0...247

Transmission mode4032

prot

w/r 0...3

Update transmission parameters. Causes the

application of introduced RS-485 interface settings.

4034

sAvE

w/r 0...1

value

0 RTU 8N2
1 RTU 8E1
2 RTU 8O1
3 RTU 8N1

Description

Write of standard parameters4035

SEt

w/r 0...1

Value

0 without changes
1 set standard parameters

Description

Password for parameters4036

SEc

w/r 0...6000

Value

0 without password
... Entry in parameters preceded by a

request about the password

Description

Current time4037

hour

w/r 0...2359

This parameter occurs in the ggmm format, where:
gg - means hours,
mm – means minutes.
The introduction of a wrong hour will cause the
setting of 23, however the introduction of wrong
minutes will generate the setting of the value 59.

37

Bit 15 Break of the supply

Bit 14 Re-set of the RTC clock

Switch on/off the unit highlight4038

unit

w/r 0, 1

Value

0 highlight swiched off
1 highlight swiched on

Description

Reserved

...

...

... ...

Meter status. Describes the current state of the
meter. Successive bits represent the given event.
The bit set on 1 means, that the event took place.
Events can be only erased.

Bit 13 Not used

Bit 12 Lack of communication with data memory

Bit 11 Wrong settings

Bit 10 Manufacturer’ s setting restored

Bit 9 Lack of measured values in data memory

Bit 8 Not used

Bit 7 Output plate is detected

Bit 6 Output plate – error or lack of calibration

Bit 5 Not used

Bit 4 Not used

Bit 3 Wrong configuration of the individual
characteristic

Bit 2 Not used

Bit 1 Not used

Bit 0 Averaging period is not elapsed

Bit 15 Not used

Bit 14 Not used

Meter status. Describes the current state of the
meter. Successive bits represent the given event.
The bit set on 1 means, that the event took place.
Events can be only cancelled.

Bit 13 Not used

Bit 12 Not used

Bit 11 Not used

Bit 10 Not used

Bit 9 Not used

Bit 8 Not used

4049 Status2 w/r

4048 Status1 w/r 0...65535

Reset of extrem values

4039 w/r 0, 1

Value

0 no change
1 Reset of min. and max. values

Description

38

Table 10

Bit 7 LED4 – Signaling of alarm nr 4.

Bit 6 LED3 – Signaling of alarm nr 3.

Bit 5 LED2 – Signaling of alarm nr 2.

Bit 4 LED1 – Signaling of alarm nr 1.

Bit 3 Status of the alarm relay nr 4.

Bit 2 Status of the alarm relay nr 3.

Bit 1 Status of the alarm relay nr 2.

Bit 0 Status of the alarm relay nr 1.

4049 Status2 z/o

The value is placed in two suc-

cessive 16-bit registers. These

registers include the same data as

32-bit registers from the area 7600

The value is placed in 32-bit

registers

Symbol

write

(w)

/

rea-

dout

(r)

Range Description

7200 7600

CoLLo

w/r -19999...99999

Lower threshold of the display colour

change

7202 7601

CoLHI

w/r -19999...99999

Upper threshold of the display colour

change

7204 7602

ovrLo

w/r -19999...99999

Lower threshold of the display

narrowing

7206 7603

ovrHI

w/r -19999...99999

Upper threshold of the display

narrowing

7208 7604

PRL 1

w/r -19999...99999 Lower threshold of alarm 1

7210 7605

PrH 1

w/r -19999...99999 Upper threshold of alarm 1

7212 7606

PRL 2

w/r -19999...99999 Lower threshold of alarm 2

7214 7607

PrH 2

w/r -19999...99999 Upper threshold of alarm 2

7216 7608

PRL 3

w/r -19999...99999 Lower threshold of alarm 3

7218 7609

PrH 3

w/r -19999...99999 Upper threshold of alarm 3

7220 7610

PRL 4

w/r -19999...99999 Lower threshold of alarm 4

39

7222 7611

PrH 4

w/r -19999...99999 Upper threshold of alarm 4

7224 7612

AnL

w/r -19999...99999 Lower threshold of analog output

7226 7613

AnH

w/r -19999...99999 Upper threshold of analog output

7228 7614

Con

w/r -19999...99999 Reserved

7230 7615 w/r 0...60000 Reserved

7232 7616 w/r 0...60000 Reserved

7234 7617 w/r -19999...99999 Reserved

7236 7618 w/r -19999...99999 Reserved

7238 7619 w/r 0...60000 Reserved

7240 7620 w/r 0...60000 Reserved

7242 7621 w/r -19999...99999 Reserved

7244 7622

H1

w/r -19999...99999

Point of the individual characteristic.

Point nr 1

7246 7623

Y1

w/r -19999...99999 Expected value for the point nr 1

7248 7624

H2

w/r -19999...99999

Point of the individual characteristic.

Point nr 2

7250 7625

Y2

w/r -19999...99999 Expected value for the point nr 2

7252 7626

H3

w/r -19999...99999

Point of the individual characteristic.

Point nr 3

7254 7627

Y3

w/r -19999...99999 Expected value for the point nr 3

7256 7628

H4

w/r -19999...99999

Point of the individual characteristic.

Point nr 4

7258 7629

Y4

w/r -19999...99999 Expected value for the point nr 4

7260 7630

H5

w/r -19999...99999

Point of the individual characteristic.

Point nr 5

7262 7631

Y5

w/r -19999...99999 Expected value for the point nr 5

7264 7632

H6

w/r -19999...99999

Point of the individual characteristic.

Point nr 6

7266 7633

Y6

w/r -19999...99999 Expected value for the point nr 6

7268 7634

H7

w/r -19999...99999

Point of the individual characteristic.

Point nr 7

7270 7635

Y7

w/r -19999...99999 Expected value for the point nr 7

7272 7636

H8

w/r -19999...99999

Point of the individual characteristic.

Point nr 8

7274 7637

Y8

w/r -19999...99999 Expected value for the point nr 8

7276 7638

H9

w/r -19999...99999

Point of the individual characteristic.

Point nr 9

40

7278 7639

Y9

w/r -19999...99999 Expected value for the point nr 9

7280 7640

H10

w/r -19999...99999

Point of the individual characteristic.

Point nr 10

7282 7641

Y10

w/r -19999...99999 Expected value for the point nr 10

7284 7642

H11

w/r -19999...99999

Point of the individual characteristic.

Point nr 11

7286 7643

Y11

w/r -19999...99999 Expected value for the point nr 11

7288 7644

H12

w/r -19999...99999

Point of the individual characteristic.

Point nr 12

7290 7645

Y12

w/r -19999...99999 Expected value for the point nr 12

7292 7646

H13

w/r -19999...99999

Point of the individual characteristic.

Point nr 13

7294 7647

Y13

w/r -19999...99999 Expected value for the point nr 13

7296 7648

H14

w/r -19999...99999

Point of the individual characteristic.

Point nr 14

7298 7649

Y14

w/r -19999...99999 Expected value for the point nr 14

7300 7650

H15

w/r -19999...99999

Point of the individual characteristic.

Point nr 15

7302 7651

Y15

w/r -19999...99999 Expected value for the point nr 15

7304 7652

H16

w/r -19999...99999

Point of the individual characteristic.

Point nr 16

7306 7653

Y16

w/r -19999...99999 Expected value for the point nr 16

7308 7654

H17

w/r -19999...99999

Point of the individual characteristic.

Point nr 17

7310 7655

Y17

w/r -19999...99999 Expected value for the point nr 17

7312 7656

H18

w/r -19999...99999

Point of the individual characteristic.

Point nr 18

7314 7657

Y18

w/r -19999...99999 Expected value for the point nr 18

7316 7658

H19

w/r -19999...99999

Point of the individual characteristic.

Point nr 19

7318 7659

Y19

w/r -19999...99999 Expected value for the point nr 19

7320 7660

H20

w/r -19999...99999

Point of the individual characteristic.

Point nr 20

7322 7661

Y20

w/r -19999...99999 Expected value for the point nr 20

7324 7662

H21

w/r -19999...99999

Point of the individual characteristic.

Point nr 21

7326 7663

Y21

w/r -19999...99999 Expected value for the point nr 21

41

The value placed In two successive

16-bit registers. These registers include

the same data as 32-bit registers from

the area 7500

The value is placed in 32-bit registers

Name

Write

(w)

/readout

(r)

Unit Name of the quantity

7000 7500 Identifier O —

Constant identifying the device.
The value 183 means the N30U meter

7002 7501 Status O —

Status is register describing the current
state of the meter

7004 7502 Control O %

It is a register defining the control of the
analog output

7006 7503 Minimum O —

Minimal value of the currently displayed
value

7008 7504 Maximum O —

Maximal value of the currently
displayed value

7010 7505

Displayed

value

O — Currently displayed value

7012 7506 Current time O — Current time

7014 7507

Wire

resistance

O

W

Wire resistance - for resistance
measurement - measured value

7016 7508 ADC O — ADC (analog-to- digtal converter) value

7018 7509

Terminal

temperature

O

°C

Temperature of terminals – the mea­surement is only carried out during the
temperature measurement by means of
thermoelectric sensors or during time
measurements

6.6. Registers Only for Readout

Table 11

42

7020 7510

Measured

value

O

Measured value - not recalculated
in relation to the individual character­istic, a.s.l.

7022 7511 EMF O

mV

EMF measured on meter terminals,
when measuring temperature by
means of thermocouples.

7024 7512 Resistance O Ohm

Resistance measured on the mean
line – only for the resistance measure­ment or when measuring temperature
by means of resistance thermometers
(RTD)

Table 11

7. UPDATING OF SOFTWARE

Function enabling updating of software from the computer of the PC
with software LPCon was implementation in meter N30U (from ver­sion of software 1.10) in the realization with the interface RS485. Free
software LPCon and update files are accessible on the manufacturer’s
website. The connected to the computer convertor RS485 is required
on USB to the updating, e.g.: the convertor PD10.

a) b)

Pic. 13. Program view: a) LPCon, b) updating of software

43

Warning! Before doing update, currently settings of meter should be
saved by program LPCon, because when software is updated default
settings of meter are restored.

After starting LPCon’s software COM port, baudrate, transmission
mode and adress should be set. It can be done in Options. Then, N30U
meter should be selected from Device. Push icon Load to read and
save current settings. Open window Lumel Updater (LU) – figure 13b
from Updating->Updating of devices firmware. Push Connect. Update
progress is shown in Messages section. Text Port opened appear after
correctly opened port. Putting meter in update’s mode can be done in
two ways: remote from LU (with settings from LPCon – port, baudrate,
transmission mode and adress) or by turning power on while button

pressed (updating by standard communication parameters ­baudrate 9600 kb/s, mode 8N2). AL1 led signals that device is ready
for update. LU will show message „Device found” with name and cur­rent version of firmware. Using button ... a valid file should be selected.
If the file is correct, message File opened will show. Send button should
be pressed. During firmware update AL1-AL4 leds indicate process
progress. If firmware update is successful device starts normal opera­tion and message Done and update duration will show. Close LU and
go to Restoration of manufacturer’s parameters. Select checkbox and
press Apply button. Next press Send button to restore previously read
parameters. Current firmware version can be checked when meter is
power on.

Warning! Power loss during firmware update could result permanent
meter damage!

44

8. ERROR CODES

After switching the meter to the network or during the work, messages
about errors can appear.

Messages about errors and their reasons are presented below.

Error message Description

Overflow of upper value of the measuring range value
or the programmed indication range. The message can
also mean a break in the sensor circuit (thermocouples or
resistance thermometers).
Overflow of lower value of the measuring range value or
the programmed indication range. The message can also
mean a shorting in the sensor circuit (thermocouples or
resistance thermometers).

ErFrt

Communication error with the data memory. Contact the
service workshop.

ErPar

Parameter error. Wrong configuration data.
Manufacturer’s settings will be restored after pressing any
button.

ErdEF

Default settings have been restored. Press any button to
transit to a normal work.

ErFPL

Error of measured values stored by the meter (measured,
maximal and minimal values). Press any button to transit
to a normal work. After pressing the button during 1 sec,
the ErdEF message will be displayed.

Table 12

ErCAo

Lack of calibration of analog outputs. Press any button
to transit to the normal work. Analog outputs will not be
serviced. Contact the service workshop.

ErCAL

Error of calibration. The work is stopped – The meter is
not in the state to carry out measurements in a correct
way. Incorrect checksum of calibration coefficients or
lack of calibration.

45

9. TECHNICAL DATA

Measuring ranges

Table 13

Kind of input Indication range Class

Pt100

-205...855°C (-200...850°C)

0.1

Pt500

Pt1000

400 W 0...410 W (0...400 W)

4000 W 0...4010 W (0...4000 W)
Thermocouple of J type -200...1200 °C (-100...1200 °C)

Thermocouple of K type -200...1370 °C (-100...1370 °C)

Thermocouple of N type -200...1300 °C (-100...1300 °C)

Thermocouple of E type -200...1000 °C (-100...1000 °C)

Thermocouple of R type -50...1768 °C (-50...1760 °C)

Thermocouple of S type -50...1768 °C (-50...1760 °C)

Voltage input 0...10 V -13...13 V (-10...10 V)

Current imput -24...24 mA (- 20...20 mA)

Voltage input 60 mV -10...63 mV (0...60 mV)

Current time 00.00...23.59 0.5 sec/24 h

Additional error:

- of automatic thermocouple cold junction temperature compensation:
1 °C

- of automatic wire resistance compensation for thermoresistors:
 0,5 °C

- of automatic wire resistance compensation for resistance measurement:
 0,2 W

- of temperature changes: for analog outputs 50 % of the class / 10 K
for analog inputs 100 % of the class / 10 K
Inputs parameters:

- resistance of the supply input [V]: > 1 M W

- resistance of the current input [mA]: 12 ±1 W%

- current flowing through the resistance thermometer 270 ± 10 uA

- resistance of wires connecting the resistance thermometer with transmitter: <10 W

46

Relay outputs - relays, NOC voltageless contacts load
capacity 250 V~/0.5A~

- relays, switched voltageless contacts
load capacity 250 V~/0.5A~ (option)

Analog outputs (option) - rogrammable, current 0/4..20mA
load resistance  500 W

- programmable, voltage 0..10V
load resistance  500 W

Output of auxiliary supply 24 V d.c./30 mA

Alarm output OC (option) output of OC type, passive npn,

30 V d.c./30 mA.

Serial interface RS-485 (option)

Transmission protocol MODBUS RTU

Error of analog output 0.2% of the set range

Protection level ensured
by the casing:

- frontal side IP65

- terminal side IP10

Weight < 0.2 kg

Overall dimensions 96 ´ 48 ´ 93 mm (with terminals)

Reference conditions and rated
operating conditions:

- supply voltage 85...253 V d.c./a.c. 40...400 Hz or

20...40 V a.c. (40...400 Hz), 20...60 V d.c.

- ambient temperature - 25...23...+55

o

C

- storage temperature -30...+70

o

C

- relative air humidity 25...95% (inadmissible condensa­ tion of water vapour)

- work position any

- power consumption < 6 VA

47

Standards fulfilled by the meter:

Electromagnetic compatibility:

l noise immunity acc. to EN 61000-6-2
l noise emissions acc. to EN 61000-6-4

Safety requirements:

acc. to EN61010-1 standard:

l isolation between circuits: basic,

l installation category: III,

l pollution level: 2,

l maximal phase-to-earth work voltage:

- 300 V for the supply circuit and,

- 50 V for remaining circuits.

l altitude above sea level: < 2000 m.

48

10. ORDER CODES

Table 14

*

- after agreeing with the manufacturer.

DIGITAL PANEL METER N30U - X X XX XX U X

Supply:

85... 253 V a.c. (45...65 Hz) or d.c. .......................... 1

20...40V a.c. (40...400 Hz ) , 20...60 V d.c. ............... 2

Additional outputs:

lack .................................................................................. 0

OC output, RS485, analog outputs ................................. 1

OCoutput, RS485, analog outputs,

switched relay outputs .................................................... 2

Unit:

unit code number acc. tab. 15 .............................................. XX

Version:

standard ........................................................................................ 00

custom-made* .............................................................................. XX

Language:

English ................................................................................................... U

Acceptance tests:

without extra quality requirements ............................................................... 0

with an extra quality inspection certificate ................................................... 1

acc. to customer’s request* ......................................................................... X

ORDER EXAMPLE:

the code: N30U - 1 0 26 00 U 0 means:
N30U – programmable digital meter type,

1 – supply: 85...253 V a.c/d.c.(45...65 Hz),
0 – lack of additional outputs,
26 – unit „°C” acc. to the table 3,
00 – standard version,
U – English language,
0 – without extra quality requirements.

49

Code of the highlighted unit Table 15

Code Unit Code Unit

00 Lack of unit 29 %
01 V 30 %RH
02 A 31 pH
03 mV 32 kg
04 kV 33 bar
05 mA 34 m
06 kA 35 l
07 W 36 s
08 kW 37 h
09 MW 38 m

3

10 var 39 obr
11 kvar 40 szt
12 Mvar 41 imp
13 VA 42 rps
14 kVA 43 m/s
15 MVA 44 l/s
16 kWh 45 rev/min
17 MWh 46 r.p.m.
18 kvarh 47 mm/min
19 Mvarh 48 m/min
20 kVAh 49 l/min
21 MVAh 50 m

3

/min
22 Hz 51 szt/h
23 kHz 52 m/h
24

W

53 km/h

25

kW

54 m

3

/h

26

o

C 55 kg/h

27

o

F 56 l/h

28 K XX on order

1)

1)

- after agreeing with the manufacturer.

50

11. MAINTENANCE AND GUARANTEE

The N30U digital panel meter does not require any periodical mainte­nance.

In case of some incorrect operations:

1. From the Shipping Date, During the Period Given in the Annexed
Guarantee Card

One should take the meter down from the installation and return it
to the Manufacturer’s

Quality Control Dept.
If the meter has been used in compliance with the instructions, the

Manufacturer warrants to repair it free of charge.

2. After the Guarantee Period:
One should turn over the meter to repair it in a certified service

workshop.
The disassembling of the casing causes the cancellation of the

granted guarantee.

Our policy is one of continuous improvement and we
reserve the right to make changes in design and speci­fications of any products as engineering advances or
necessity requires and revise the above specifications
without notice.

51

52

N30U-09A

Sifam Tinsley Instrumentation Inc

3105, Creekside Village Drive, Suite 801

Kennesaw GA 30144

email – [e-mail]

Phone - [phone]