Lumel N12B Type Digital Panel Indicator User’s Manual

PROGRAMMABLE
DIGITAL
PANEL INDICATOR
N12B TYPE
USER’S MANUAL
PROGRAMMABLE DIGITAL
PANEL INDICATOR N12B TYPE
USER’S MANUAL
CONTENTS
1.APPLICATION........................................................................ 5
2.BASIC REQUIREMENTS, OPERATIONAL SAFETY............ 6
3.FITTING.................................................................................. 6
4.CONNECTION........................................................................ 7
5.OPERATION........................................................................... 7
6.PROGRAMMING.................................................................. 10
7.RS-485 INTERFACE............................................................. 20
7.1. Connection way of the serial interface...................................... 20
7.2. Description of the MODBUS protocol implementation.................. 22
7.3. Description of used functions................................................. 22
7.4. Register map of the N12B indicator......................................... 25
7.5. Registers for writing and read-out........................................... 26
7.6. Registers only for read-out.................................................... 32
8.TECHNICAL DATA............................................................... 35
9.BEFORE A FAILURE WILL BE DECLARED....................... 37
10.PROGRAMMING EXAMPLES OF N12B INDICATORS...... 38
11.EXECUTION CODES........................................................... 41
12.MAINTENANCE AND GUARANTEE................................... 42
1. APPLICATION
N12B programmable digital panel indicators are destined to be installed
in synoptic panel boards and display the value transmitted by the RS-485
interface. The 5 or 4 digit read-out field (14 or 20 mm high digits) in red or green
colour ensures a good readability at a long distance.
They realise other additional functions as:
- signalling of the set alarm value overrunning,
- signalling of the measuring range overrunning,
- re-calculation of the measuring quantity into an optional quantity on the
base of an individual, linear characteristic,
- programming of the indication resolution,
- programming of the averaging number of transmitted values,
- saving of maximal and minimal values,
- monitoring of set parameter values,
- blocking of the parameter introduction by means of a password,
- highlighting of any optional measuring unit as per the order,
- servicing of the interface with a MODBUS protocol, both ASCII and RTU,
- conversion of the measured quantity into a standard programmable current
or voltage signal,
- interception and display of the register value from the device connected to
the bus
- Master-asking of the device connected to the bus
With the meter we deliver:
- a guarantee certificate,
- 2 holders to fix the indicator on a panel,
- a connector with screw or self-locking connections (as per order),
- a service manual,
- a set of stickers with units.
After unpacking the indicator, please check whether the type and execution code
on the data plate correspond to the order.
Symbols located in this service manual mean:
Especially important, one must acquaint with this before connecting the meter. The non-observance of notices marked by
these symbols can occasion the damage of the meter.
One must take note of this when the meter is working inconsistently to the expectations.
2. BASIC REQUIREMENTS, OPERATIONAL SAFETY
N12B indicators are destined to be mounted into panels and cubicles. In the
range of operational safety they are in conformity with the EN 61010-1 standard
requirements.
The installation and indicator connection should be operated by
a qualified personnel.
One must take into consideration all accessible protection requirements.
Before switching the instrument on, one must check the correctness
of the network lead connection.
Requirements in respect to the main lead must be in accordance with the
EN 61010-1 standard. There must be a cut-off installed in the building.
This cut-off should be installed near the device and easy accessible for
the operator.
In case of the protection terminal connection with a separate lead one
must remember to connect it before the connection of network leads.
Do not connect the instrument to the network through
an auto-transformer.
Before taking the indicator housing out one must turn the supply off.
The removal of the indicator housing during the warranty contract
period may cause its cancellation.
3. FITTING
Prepare a (92+0.6  45+0.6) mm hole
in the panel. The thickness of the
material from which the panel is made
can not exceed 15 mm. One should
introduce the indicator from the front
of the panel when the supply circuit is
turned off. After introducing the indicator, fasten it by means of holders.
Fig. 1. Overall dimensions
4. CONNECTION
At the rear side of the indicator there are two terminal strip seats. A connector
with screw terminals or a self-locking connector is added to the meter depending on the indicator type chosen in the ordering code. The fig. 2. shows the
connection way of external signals. The description of the connector is also
printed on the indicator housing.
Fig. 2 Connection ways of the N12B indicator
It is recommended to use screened leads on the indicator input. As a feeder
cable one must use a two-wire cable and choose the lead cross-section such
that in case of a short-circuit from the device side, the protection of the cable
was ensured by means of the electric installation fuse.
Requirements related to the feeder cable are regulated by the EN 61010-1
standard.
5. OPERATION
After switching the indicator on, its type and next the program version are
displayed on the display. After ca 10 sec, the indicator transits automatically
into the measuring mode and the input signal value is displayed. The indicator
blanks automatically insignificant zeros. The exceeding of the alarm threshold
is signalled by means of alarm diodes 1 and 2. The basic unit of the measured
value is automatically highlighted by the indicator 1).
a)
b)
Fig. 3. Description of the indicator faceplate:
a) 5-digit execution
b) 4-digit execution
1)
No exist in the 4-digit (20 mm) execution
Key functions:
- acceptance key
entry into the programming mode (hold down during ca 3 seconds),
moving through the menu - choice of the level
entry into the change mode of the parameter value,
acceptation of the changed parameter value.
- key to increase the value
display of the maximal value,
entry to the parameter group level,
moving through the chosen level,
change of the chosen parameter value - increase of the value,
successive parameter in the monitoring mode.
- key to decrease the value
display of the minimal value,
entry to the parameter group level,
moving through the chosen level,
change of the chosen parameter value - decrease of the value,
successive parameter in the monitoring mode.
- resignation key
entry to the menu of parameter monitoring (hold down during
ca 3 seconds),
exit from the monitoring menu,
resignation of the parameter change,
absolute exit from the programming mode.
The pressure of the
key combination causes the erasing of
alarm signalling. This operation exclusively acts when the support function is
switched on.
The pressure of the
key combination causes the erasing of all
minimal values.
The pressure of the
key combination causes the erasing of all
maximal values.
The pressure and holding down of the
key during ca 3 sec. causes the
entry into the programming matrix. The programming matrix is secured by the
safeguard code.
The pressure and holding down of the
key during ca 3 sec. causes the
entry into the previewing menu one must move through the previewing menu
by means of
and
keys. In this menu, all programmable indicator
parameters, except service parameters, are only accessible to the readout. The exit from the previewing menu takes place by means of the
key. On the previewing menu, parameter symbols are alternately displayed
together with their values. The fig. 4. shows the operation algorithm of the
indicator.
The appearance of the following symbols on the digital displays means:
- Incorrectly introduced security code.
- Exceeding of the upper measuring range
- Exceeding of the lower measuring range
- Exceeding of the waiting limit time for information
6. PROGRAMMING
The
key pressure and its holding down during ca 3 seconds causes the
display of the security code symbol SEC alternately with the 0 value set up by
the manufacturer. The writing of the correct code causes the entry, into the
programming matrix. The transition matrix into the programming mode is shown
on the fig. 5. We choose the level by means of the
key, whereas the entry
and moving through parameters of the chosen level is carried out by means of
the
and
keys. Parameter symbols are displayed alternately with
their actual values.
In order to change the value, one must use the
key. To resign of the
parameter change one must press the
key. To exit from the chosen level
one must select the - - - symbol and press the
key.
In order to exit from the programming matrix into measurement, one must
press the key.
The inscription HEY occurs and after ca 5 sec., the indicator will automatically enter into the displaying mode of the value transmitted by the RS-485
interface.
10
11
Fig. 4. Operation algorithm of the N12B indicator
(*) Concerns only SOUr = bUS or nnAS
(1) Exists only when the individual characteristic is attached (Ind =0)
(2) Exists only in the 5-digit executions.
Fig. 5. Transition matrix into the programming mode
12
Way of changing the value of the chosen parameter
In order to increase the value of the chosen parameter one must press the
key. A single pressure of this key causes a value increase of 1. The hold
of the pressed
key causes a continuous increase of the value down to
the display of the 0 value. The jump to the next digit follows after this value. The
further change is similar. In any moment, the key release causes a jump to the
first digit. It is similarly in case of the value decrease.
A single pressure of the
key causes a value decrease of one. The hold
of the
key pressure down causes a continuous decrease of the value
down to the display of the 0 value. The jump to the next digit follows after this
value. The further change is similar. The key release in any moment causes a
jump on the first digit.
In order to accept the set up parameter one must press the
key. Then,
the writing of the parameter and display of its symbol follows alternately with the
new value. The pressure of the
key during the change of the parameter
causes the resignation of the saving.
Table 1
Parameter
symbol
Description
Range of changes
d_P
Setting of the decimal point. This
setting acts both when the individual
characteristic is switched off and when
the characteristic is switched on.
Optional.
Cnt
Number of averages of transmitted
values
In 4-digit execution: 0...9999
In 5-digit execution: 0...99999
The inscription of 0 cause the
blanking of the display.
Ind
Switching off or on of the user’s
individual linear characteristic
ON - Characteristic switched on
OFF - Characteristic switched off
13
Table 1 (continuation)
Parameter
symbol
Description
H1, Y1 Parameters of the individual
H2, Y2 characteristic.
On the base of co-ordinates of two
points given by the user, the indicator
assigns coefficients of the individual
characteristic a and b
Y= aH+b, where:
H1 and H2 - value transmitted by the
RS-485 interface,
Y1 and Y2 - expected value on the
display
Range of changes
In 4-digit execution:
-1999...9999
In 5-digit execution:
-19999...99999
PrL1
PrL2
Alarm lower threshold
In 4-digit execution:
-1999...9999
In 5-digit execution:
-19999...99999
PrH1
PrH2
Alarm upper threshold
In 4-digit execution:
-1999...9999
In 5-digit execution:
-19999...99999
tYP1
tYP2
Alarm type
The fig. 6. shows the graphical
illustration of alarm types
nor - normal
On - switched on
OFF - switched off
H_On - manually switched on, till
the time of the alarm type change, the
alarm output is switched on for good.
H_OF - manually switched off, till
the time of the alarm type change, the
alarm output is switched off for good.
dLY1
dLY2
Delay of alarm operation.
The parameter is defined in number of
received values i.e. one must give after
how many values from the RS-485
interface the alarm operation follows.
The alarm switching off follows without
delay. The parameter takes in account
the number of averages of Cnt values,
i.e. the whole averaging cycle is treated
as a single value.
In 4-digit execution:
0...9999
14
In 5-digit execution:
0...99999
The introduction of 0 causes the
operation at the moment of alarm
occurrence.
Table 1 (continuation)
LEd1
LEd2
Support of the alarm signalling.
On - support switched on
In the situation when the function
OFF - support switched off
of support is switched on after the withdrawal of the alarm state, the signalling
diode is not blank. It signals the alarm
state till the moment of its blanking by
means of the combination of
keys.
This function only and exclusivey concerns the alarm signalling and then the
relay contacts will act without support,
according the chosen alarm type.
tYPA
Type of analogue output.
PrAd - current
nAP - voltage
AnL
Lower threshold of the analogue
output.
It is the parameter defining the value
on the display for which we want
obtain 0 on the analogue output.
In the 4-digit execution:
-1999... 9999
Upper threshold of the analogue
output.
It is the parameter defining the value
on the display for which we want
obtain the max. value (20 mA or 10 V )
on the analogue output.
In the 4-digit execution:
-1999... 9999
AnH
bAuD Baud rate of the RS-485 interface
In the 5-digit execution:
-19999... 99999
In the 5-digit execution:
-19999... 99999
2400 - 2400 bps
4800 - 4800 bps
9600 - 9600 bps
trYb
Kind of transmission through the
RS-485 interface.
OFF - interface switched off
A8n1 -ASC II 8N1
A7E1 -ASCII 7E1
A7o1 - ASCII 7O1
r8n2 - RTU 8N2
r8E1 - RTU 8E1
r8o1 - RTU 8O1
Adr
Device address
0... 247
15
Parameter
symbol
ToUt
SOUr
Table 1 (continuation)
Description
Range of changes
Waiting time limit to obtain information
(in seconds) after which „- - - -” have to
be displayed on the display.
The write of the „0” value will cause the
switching parameter action off.
In case when SOUr=nnAS, the write
of the „0” value will cause the index
operation switching as master off.
In the 4-digit execution:
0... 999,9
Choice of indicator kind of work
Syn - display of value transmitted
through the interface to the register
7648
In the 5-digit execution:
0... 9999,9
BUS - interception and display of
the register value from the device
connected to the bus interception
parameters are set in ToUt, Dadr,
DrEJ, TrEJ, FFOr.
nnAS - indicator work as master. Parameters of the questioned device are
set in ToUt, Dadr, DrEJ, TrEJ, FFOr.
DAdr
Device address from which the register value has to be intercepted or the
address of the questioned device.
1... 247 - this address must be different from the indicator address itself.
DrEJ
Register address to intercept or
question.
In the 4-digit option: 1...9999
In the 5-digit option: 1...65535
TrEJ
Type of intercepted or questioned
register.
32b - 32-bit registers of float type
16b - 2x16-bit registers of float type
32S - 32-bit registers of signed long
type
32U - 32-bit registers of unsigned
long type
16S - 16-bit registers of signed
int type
16U - 16-bit registers of unsigned
int type
16
Table 1 (continuation)
FFOr
Format of the transmitted register by
the MODBUS protocol.
Where TrEJ = 32b, 16b, 32S, 32U
3210 - as the first, oldest byte is sent
or the byte including the character and
exponent.
1032 - words with exchanged places.
0123 - float transmitted in inversed
sequence.
2301 - returned bytes in words.
Where TrEJ = 16U, or 16S
0010 - as first, the oldest byte is
transmitted.
0001 - as first, the youngest byte is
transmitted.
SEt
Writing down of manufacturers
settings.
Parameter values set up by the manufacturer are shown in the table 2.
A pressure of the
key
causes the writing down of standard
parameters into the meter. The execution of this operation is signalled
by the inscription End.
SEC
Introduction of a new password
In the 4-digit execution:
-1999...9999
In the 5-digit execution:
-19999...99999
tSt
Display test. The test consists on the
consecutive switching of digital display
segments on. Alarm diodes and
highlighting diodes of the unit should
flicker. The continuous lighting of the
alarm diodes signals that the relay is
switched on.
The pressure of the
key
causes the test switching on. The
key ends the test.
JEd
Unit highlighting switching on.
On - highlighting switched on
OFF - highlighting switched off
---
Exit from the parameter group of the
chosen level.
The pressure of the
key
causes the exit from the parameter
group of the chosen level.
17
a) nor
PrH > PrL
b) nor
PrH £ PrL
c) OFF
c) On
Fig. 6. Alarm type: a) and b) normal, c) switched off, d) switched on
18
CAUTION
In case of On and OFF alarm types, the writing down of PrL>PrH will
cause an automatic transcription of the value from the threshold PrL
into PrH and from PrH into PrL. The alarm type will not change.
In case of a measuring range exceeding the relay reaction is concordant
with written down PrL, PrH and tYP parameters. In spite of displaying
the exceeding, the indicator will carry out the measurement as before.
In case of an individual characteristic switching on (Ind=On) the
measurement result is transformed linearly in accordance with
introduced H1, Y1, H2, Y2 parameters.
The indicator currently checks up the value of the actually introduced
parameter. In case when the introduced value exceeds the upper range
of changes given in the table 1, the indicator will automatically carry out
the change into the minimal value. Similarly, in case when the
introduced value exceeds the lower range of changes given in the
table 1, the indicator will automatically carry out the change into the
maximal value.
Standard parameters of the indicator
Parameter symbol
d_P
Cnt
Ind
H1,Y1,H2,Y2
PrL1, PrL2
PrH1,PrH2
tYP1, tYP2
dLY1, dLY2
LEd1, LEd2
tYPA
AnL
AnH
bAud
trYb
Adr
toUt
Level in the matrix
1
1
1
1
2,3
2,3
2,3
2,3
2,3
4
4
4
4
4
4
4
Table 2.
Standard value
0.00
1
OFF
0
-19.99 or -199.99
99.99 or 999.99
OFF
0
OFF
PrAd
-19.99 or -199.99
99.99 or 999.99
9600
r8n2
1
10.0
19
Standard parameters of the indicator
Parameter symbol
Level in the matrix
Table 2 (continuation)
Standard value
SOUr
dAdr
drEJ
trEJ
FFOr
SEC
5
5
5
5
5
6
SYn
2
7505
32 b
3210
0
JEd
6
On
7. RS-485 INTERFACE
N12B programmable digital indicator series have their serial link in the
RS-485 standard to communicate in computer systems and with other
devices fulfilling the Master function. The MODBUS asynchronous character communication protocol has been implemented on the serial link. The
transmission protocol describes the ways of information exchange between
devices through the serial link.
7.1. Connection way of the serial interface
The RS-485 standard enables the direct connection to 32 devices on a single
serial link of 1200 m long. For the connection of a greater quantity of devices it
is necessary to apply additional intermediate-separating systems.
The lead out of the interface line is given in the paragraph 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 carried out with a screened
lead. The screen must be connected to the protective grounding in a single
point. The GND line serves to an additional protection of the interface line for
long connections. One must connect it to the protective grounding (this is not
necessary for the interface correct work).
In order to obtain the connection with an IBM PC computer, an RS-485 interface
card or a RS-232/RS-485 converter is indispensable.
On the Fig. 7. and Fig. 8 the device connection is shown.
20
Fig. 7. Way of the RS-485 interface connection in the master
mode
Fig. 8. Way of RS-485 interface connection in the slave mode
The marking of the transmission line for the card in the PC computer
depends on the card producer.
21
7.2. Description of the MODBUS protocol implementation
The implemented protocol is compatible with the PI-MBUS-300 Rev G
Modicon Company.
Setting-up of meter serial link parameters in the MODBUS protocol:
- meter address
1... 247
- baud rate
2400, 4800, 9600 bps
- working modes
ASCII, RTU
- information unit
ASCII: 8N1, 7E1, 7O1
RTU: 8N2, 8E1, 8O1
The parameter configuration of the serial link is described in the further parts
of this service manual. It consists on the settlement of the baud rates (bAud
parameter), device address (Adr parameter) and the information unit type
(trYb parameter).
Notice:
Each indicator or meter connected to the communication network must have:
* a unique address, different from addresses of other devices connected in
the network,
* an identical baud rate and information unit type.
7.3. Description of used functions
Following functions of the MODBUS protocol have been implemented in meters
of N12 series and in N12B indicators:
Code of functions
Code
0x03
0x06
0x10
0x11
Table 3
Meaning
Read-out of n-register
Writing of a single register
Writing of n-registers
Identification of the slave device
Read-out of n-registers (code 03 h)
The function is inaccessible in the publication mode.
Example: readout of 2 registers beginning from the register with
1 DBDh (7613) address.
Request:
Device
address
Function
code
01
03
22
Register
address
Hi
1D
Register
address
Lo
BD
Number of
registers
Hi
00
Number of
registers
Lo
02
Checksum
CRC
52 43
Response:
Device
address
Function
code
Number
of bytes
01
03
08
Value from the register
1DBD (7613)
3F
80
00
00
Value from the register
1DBE (7614)
40
00
00
00
Checksum
CRC
42 8B
Caution!
It is possible to readout simultaneously up to 28 registers.
Write of values in the register (code 06h)
The function is accessible in the publication mode.
Example: record of the register of 1DBDh (7613) address.
Request:
Device
address
Function
01
06
Register
address
Hi
1D
Register
address
Lo
BD
Register
address
Hi
1D
Register
address
Lo
BD
Value from the register
1DBD (7613)
3F
80
00
00
Checksum
CRC
85 AD
Response:
Device
address
Function
01
06
Value from the register
1DBD (7613)
3F
80
00
00
Checksum
CRC
85 AD
Record into n-registers (code 10h)
The function is accessible in the publication mode
Example: write of 2 registers beginning from the register with 1DBDh (7613)
address.
Device
address
Function
Request:
01
10
Register
address
Hi
Lo
1D BD
Number of
registers
Hi
Lo
00
02
Number Value for the register Value for the register
of bytes
1DBD (7613)
1DBE (7614)
08
3F 80 00 00 40 00 00 00
Checksum
CRC
03 09
Response:
Device
address
Function
Register
address
Hi
Register
address
Lo
01
10
1D
BD
Number of Number of
registers registers
Hi
Lo
00
02
Checksum
(CRC)
D7 80
Caution!
It is possible to readout simultaneously up to 28 registers.
23
Report identifying devices (code 11h)
Example: Data readout identifying the device for NA5 with a universal input.
Request:
Device
address
01
Function
code
11
Checksum
(CRC)
C0 2C
Response:
Device Function Quantity Device
address code of bytes identifier
01 11 08
Device
state
65
Field depending Control
on the device type total
FF
XXXXXX
Device address
- depending on the set value
Function
- function No: 0x11;
Number of bytes
- 0x08;
Device identifier
- 0x65 - N12B
Device state
- 0xFF;
Field depending on the
device type
- XXXXXX
Device name
- transmitted as ASCII character and defines
the indicator type:
B - 0x42, 42 X X X X X
Number of display
- Field depending on the number of
indicator display digits
- 0x04 - 4-digit indicators, X 04 X X X X
- 0x05 - 5-digit or indicators, X 05 X X X X
No of the program ming version
- programming version implemented in the
meter or indicator X X _ _ _ _ - 4-byte variable
of float type
Control total
- 2 bytes in the case of work in the RTU mode
1 byte in the case of work in the ASCII mode
24
Example:
Working in the RTU mode, e.g.: trYb=r8n2.
N12B indicator
Execution with a 4- digit display,
No of the programming version 1.00,
Device address set on Adr=0x01,
For this type of meter the frame will have the following shape:
Device
address
Function
Number
of bytes
Device
identifier
Device
state
Field depending
on the device type
Control
total (crc)
01
11
08
60
FF
42 04 3F 80 00 00
CF B1
7.4. Register map of N12B indicators
Register map of the N12B indicators
Address range
Value type
Table 4
Description
7000-7200
float (32 bits) The value is placed in two successive 16-bit registers.
Registers include the same data as 32-bit registers from
the 7500 area.
Registers are only for read-out.
7200 - 7400
float (32 bits) The value is placed in two successive 16-bit registers.
Registers include the same data as 32-bit registers from
the 7600 area.
Registers can be read out and written in.
7500 - 7600
float (32 bits) The value is placed in a 32-bit register. Registers are
only for read-out .
7600 - 7700
float (32 bits) The value is placed in a 32-bit register. Registers can be
read out and written in.
25
7.5. Registers for writing and read-out
N12B - indicators
7200
7600
Symbol
Identifier
writing (w) / read-out (r)
The value is placed in 32-bit
registers
The value is placed in two successive 16-bit registers. Registers include
the same data as 32-bit register from
the 7600 area.
Table 5
r
Description
Range
Device identifer
0x6504...6505
Value
7202
7601
no occurs 1)
7204
7602
no occurs 1)
7206
7603
no occurs 1)
7208
7604
no occurs 1)
7210
7605
no occurs 1)
7212
7606
no occurs 1)
7214
7607
no occurs 1)
7216
7608
no occurs 1)
7218
7609
no occurs 1)
7220
7610
no occurs 1)
7226
7613
d_P
w/r
6504
4 digit execution
6505
5 digit execution
Decimal point
0... 4
Value
7228
7614
Cnt
w/r
0...3
4 digits execution
0...4
5 digits execution
Number of measurements
0... 99999
Value
26
0...9999
4 digits execution
0...99999
5 digits execution
7230
7615
Ind
w/r
Individual characteristic
0... 1
Value
0
Character. switched off
Character. switched on
1
7232
7616
H1
w/r
Parameters of the
individual characteristic
-19999... 99999
Value
-1999...9999
4-digit indicators
-19999...99999 5-digit indicators
The range of H1, H2, Y1, Y2, PrL1,
PrH1, PrL2, PrH2, AnL, AnH
parameters depends only the set up decimal
point d_P. The writing of the value with a
higher number of significant places after
the decimal point will cause its round-off.
Values beyond the range cause the return of
the error code 03 (not allowed data value).
7234
7617
Y1
w/r
Parameters of the
individual characteristic
-19999... 99999
Value
-1999...9999
4-digit indicators
-19999...99999 5-digit indicators
Change of range as for the H1 parameter
7236
7618
H2
w/r
-19999... 99999
7238
7619
Y2
w/r
-19999... 99999
7240
7620
7242
7621
PrL1
w/r
Parameters of the
individual characteristic
Change of range as for the H1 parameter
Parameters of the
individual characteristic
Change of range as for the H1 parameter
No occurs 1)
Lower threshold of alarm 1
-19999... 99999
Change of range as for the H1 parameter
7244
7622
PrH1
w/r
Upper threshold of alarm 1
-19999... 99999
Change of range as for the H1 parameter
7246
7623
tYP1
w/r
Type of alarm 1
0... 4
Value
0
1
2
3
4
Normal
Switched on
Switched off
Manually switched on
Manually switched off
27
7248
7624
dLY1
w/r
Delay of alarm 1
0... 99999
Value
7250
7625
LEd1
w/r
0... 1
0...9999
4-digit indicators
0...99999
5-digit indicators
Support of alarm 1 signalling
Value
7252
7626
7254
7627
0
Support switched off
1
Support switched on
no occurs 1)
PrL2
w/r
Lower threshold of alarm 2
-19999... 99999
Change of range as for the H1 parameter
7256
7628
PrH2
w/r
Upper threshold of alarm 2
-19999... 99999
Change of range as for the H1 parameter
7258
7629
tYP2
w/r
Type of alarm 2
0... 4
Value
0
1
2
3
4
7260
7630
dLY2
w/r
Normal
Switched on
Switched off
Manually switched on
Manually switched off
Delay of alarm 2
0... 99999
Value
7262
7631
LEd2
w/r
0... 1
0...9999
4-digit indicators
0...99999
5-digit indicators
Support of alarm 2 signalling
Value
7264
7632
no occurs 1)
7266
7633
no occurs 1)
7268
7634
7270
7635
0
Support switched off
1
Support switched on
no occurs 1)
tYPa
w/r
Type of analogue output
0... 1
Value
28
0
Current
1
Voltage
7272
7636
AnL
w/r
-19999... 99999 Lower threshold of the analogue output
7274
7637
AnH
w/r
-19999... 99999 Upper threshold of the analogue output
7276
7638
7278
7639
Change of range as for the H1 parameter
Change of range as for the H1 parameter
no occurs 1)
Jed
w/r
0... 1
Switching on or switching off on the
unit highlighting
Value
0
Highlighting switched off
1
Highlighting switched on
Occurs only in 5-digit meters
7280
7282
7640
7641
Del_min
Del_maks
w/r
w/r
0... 1
0... 1
7284
7642
no occurs 1)
7286
7643
no occurs 1)
7288
7644
no occurs 1)
7290
7645
no occurs 1)
7292
7646
no occurs 1)
7294
7647
7296
7648
Erasing in of the minimal value
Value
0
Lack of operation
1
Erasing of the minimal
value
Erasing in of the maksimal value
Value
0
Lack of operation
1
Erasing of the maximal
value
no occurs 1)
Synoptic
w/r
Value to display on the display
The range of this parameter only depends on
the set up decimal point d_P . The writing of
the value with a greater number of significant
places after the decimal point will cause its
round-off. Values beyond the range cause
the return of the error code 03 (not allowed
data value). The number value for this
register must be included in the interval from
-8388608 to 8388608
7298
7649
no occurs 1)
29
7300
7650
SOUr
w/r
0... 2
Choice of kind of indicator work
Value
7302
7651
dAdr
w/r
1... 247
0
Display of transmitted value
through the interface into
the register 7648
1
Interception and display of
the register value from the
device connected to the bus.
Caution!
The indicator intercepts
response frames (code 03h)
transmitted to the master
device.
2
The indicator works as
Master.
Device address from which the
register value is to be intercepted, or
the device address to ask
Caution!
The address must be different from the
indicator address.
7304
7652
DrEJ
w/r
Register address
to intercept
1... 65536
Value
7306
7653
TrEJ
w/r
0... 1
1...9999
4-digit indicator
1...65536
5-digit indicator
Type intercepted or asked address
Value
0
32-bit float type
1
2x16 bit float type
2
32 bit signed long
3
32 bit unsigned long
4
16 bit signed int
5
30
16 bit unsigned int
7308
7654
FFOr
w/r
0... 3
Format of sent register by the Modbus
protocol
Value
For trEJ = 0, 1, 2, 3
0
3210 - as the first the oldest
byte or the byte including the
character and exponent is
sent (in case of float type).
1
1032 - words changed
in places
2
0123 - float sent in
inversed sequence
3
2301 - bytes inversed
in words
Dla trEJ = 4 or 5
7310
7655
ToUt
w/r
0... 9999.9
0
10 - as the first the most
significant byte to sent
1... 3
01 - as the first the less
significant byte to sent
For SoUr=0 or 1. The waiting time limit to
obtain information (in seconds) after which
„_ _ _ _” are displayed.
For SoUr=2. Interval time between
asking frames sent from the device in
Master mode.
Value
0... 999.9
4-digit indicators
0... 9999.9
5-digit indicators
Caution!
For SoUr=0 or 1. The write of „0” value
will cause the switching of the parameter
operation off.
For SoUr=2. The write of „0” value will
cause the switching of master device off.
1)
In case of registers no occurring in the indicator, their values
are equal 1E+20
31
The value is placed in two
successive 16-bit registers.
Registers include the same
data as 32-bit register from
the 7600 area.
The value is placed in 32 bit
registers
7.6. Registers only for read-out
Name
7000
7500
Identifier
_
7002
7501
Status
_
7004
7502
Control
%
7006
7503
Minimum
_
Minimal value of the currently
displayed value
7008
7504
Maximum
_
Maximal value of the currently
displayed value
7010
7505
Displayed value
_
7012
7506
No occurs 1)
7014
7507
No occurs 1)
7016
7508
No occurs 1)
7018...7096
7509...7548
No occurs 1)
Unit
Quantity name
Constant identifying the device
0×65 - N12B
1)
Status is the register describing the
current state of the indicator.
It is the register describing the
control of the analogue output
(rzeczywista jest tylko w zakresie
0...120%).
Currently displayed value
In case of registers no occuring in the given series of meters, their value are equal 1E+20
Caution!
At the moment of the upper or lower range exceeding, „minimum”,
„maximum” and „Displayed value” parameters are 1E + 20
(unbelievable measurement result).
For the parameter Cnt = 0 (blanking of the displays), parameters
„minimum”, „maximum” and „displayed value” are set up on the value
1E + 20.
32
Signalling the range lower overrunning
bits 15 14 13 12 11 10 9 8 7 6 5
MSB
Individual characteristic or lack of it
Relay state (alarm) 1
Relay state (alarm) 2
Position of the decimal piont
Baud rate
X X X X X X X X X X X X X X X
Working mode and information unit
X
Kind of output (voltage, current)
Compensation error of lead resistance
Kind of display
Signalling the range upper overrunning
Description of the status register
4 3 2 1 0
LSB
Bit-15 Kind of display
0 - meter or indicator with a 4-digit display
1 - meter or indicator with a 5-digit display
Bit-14 Reserved
Bit-13 Kind of output (voltage, current)
0 - current
1 - voltage
33
Bit-12...10 Working mode and information unit
000 - interface switched off
001 - 8N1 - ASCII
010 - 7E1 - ASCII
011 - 7O1 - ASCII
100 - 8N2 - RTU
101 - 8E1 - RTU
110 - 8O1 - RTU
Bit-9...8 Baud rate
00 - 2400 bit/s
01 - 4800 bit/s
10 - 9600 bit/s
Bit-7...5 Position of the decimal point
000 - lack
001 - 0.0
010 - 0.00
011 - 0.000
100 - 0.0000 (only for 5-digit meter or indicator executions)
Bit-4 Signalling of the range upper overrunning
0 - normal work
1 - range overruning
Bit-3 Signalling of the range lower overrunning
0 - normal work
1 - range overrunning
Bit-2 Relay state (alarm 2)
0 - switched off
1 - switched on
Bit-1 Relay state (alarm 1)
0 - switched off
1 - switched on
Bit-0 Individual characteristic
0 - Individual characteristic switched off
1 - Individual characteristic switched on
34
8. technicAL DATA
Panel indicator dimensions 96  48  93 mm
Protection index ensured by the housing front
IP 50
Protection index ensured from the terminal side
IP 20
Rated operating conditions:
l supply voltage depended on
the execution code
85... 253 V a.c. d.c.
20... 40 V a.c. d.c.
l supply voltage frequency
40... 440 Hz
l ambient temperature
0... 500C
l relative air humidity
< 75% (water vapour condensation inadmissible)
Power consumption
max 5 VA
Storage temperature
-200C...+850C
Display field
N12B4 indicator
N12B5 indicator
four 7-segment LED displays
and two alarm diodes
five 7-segment LED displays,
two alarm diodes, and two
diodes to the unit highlighting
Indication range of the digital display:
N12B4 indicator
-1999...9999
N12B5 indicator
-19999...99999
Servicing cztery przyciski
Relay outputs
• programmable alarm thresholds,
• three types of alarms (see chapter 6),
• hysteresis defined by means of the lower and upper alarm threshold,
• signalling of alarm action by means of diodes,
• programmable delay of the alarm operation,
• two relay outputs,
• voltageless - make contacts - maximal load capacity:
• voltage: 250 V a.c., 150 V d.c.
35
• current: 5 A 30 V d.c., 250 V a.c.
• resistance load: 1250 VA, 150 W
Analogue output:
• current programmable
load resistance  500 
• voltage programmable
load resistance  500 
• galvanic insulation,
• resolution
• basic error
0/4...20 mA
0...10 V
0.01% of the range
±(0.2% of the range)
Digital output:
• RS-485 interface,
• MODBUS transmission protocol:
• ASCII: 8N1, 7E1, 7O1
• RTU: 8N2, 8E1, 8O1,
• Baud rate: 2400, 4800, 9600 bauds,
• Maximal response time for query frame: 600 ms
Electromagnetic compatibility:
• immunity • emission Safety requirements:
according EN 61010-1 standard:
• installation category
• level of pollution
• maximal voltage in relation to
the earth
acc. EN 61000-6-2
acc. EN 61000-6-4
III
2
300 V a.c.
Protection level:
• ensured by the housing
• ensured by the terminals
IP 50
IP 20
Weight
200 g
Time of the display restoring
36
programmed, min. 20 ms
9. BEFORE A FAILURE WILL BE DECLARED
SYMPTOMS
PROCEDURE
1. The indicator does not
operate
Check the connection of the feeder cable
2. Only the diodes are lighting
The number of transmitted averaged values
which has been introduced = 0
The indicator operates in the SLEEP mode. The
display is blanked.
3. Only the horizontal dashes
are displayed on the display.
Transmitted values are beyond the indicator
range.
4. Lack of possibility to enter into
the programming mode. The
inscription Err is displayed.
The programming mode is protected by the
password. If the user forgets which password has
been introduced one must contact the nearest
authorised service workshop.
5. Lack of certainty if all display
segments are efficient
Enter into the service mode and switch on the
display test. Simultaneously the same segments
should be lighted on all displays. The state with
blanked displays does never occur. Otherwise,
submit the defect to the nearest authorised
service workshop.
6. During operations in the programming mode, parameter
values inconsistent with the
range of changes given in the
table 1 appear on the display
Enter into the service mode and accept the SEt
parameter. The indicator will introduce values in
accordance with the table 2.
7. A result inconsistent with our
expectations appears on the
display.
Check if the individual characteristic is not
switched on. In case of necessity enter into the
service mode and accept the SEt parameter. The
indicator will introduce parameters in accordance
with the table 2.
8. H1, Y1, H2, Y2, d_P parameter symbols are not displayed
in the programming mode.
In case of switched individual characteristic off,
mentioned symbols are omitted
9. Despite of the alarm threshold
exceeding neither the alarm
relay nor the signalling diode
is switched on.
Check the introduced delay of the alarm operations into the indicator. If need be, correct the
dLY parameter
37
10. Despite of the relay switching
off, the alarm diode does not
go out.
Check if the alarm signalling support is not
switched on. LEd parameter. In case of need,
switch it off
11. When the parameter of the
alarm signalling support is
switched on, lack of possibility to erase the signalling
diode by means of the key
combination. (Fig.4).
The alarm still lasts. The erased diode is immediately re-lighted
12. Despite the fact that the alarm
still remains, the signalling
diode does not light up.
Check if a delay of the alarm operation has not
been introduced dLY parameter.
13. Instead to display the measurement result, the indicator
displays the parameter symbol alternately with its value
despite we were not entered
into the programming mode.
The indicator works in the previewing mode.
14. A delay of the alarm operation
has been introduced, e.g.
30 averages, however after
this time the alarm has not
operate.
The lasting alarm state was shorter than the
programmed, e.g. during the lasting time of the
alarm the state of alarm withdrawal has occurred.
In that case the indicator starts counting the
measurements from the beginning
15. The indicator does not establish the communication with
the computer
Check if the interface leads (A, B, GND) have
been correctly connected. Then, check in the
programming matrix the interface setting (trYb,
bAud, Adr). These parameters must be the same
as in the used software.
10. PROGRAMMING EXAMPLES OF N12B METERS
Example 1 - Programming of an individual characteristic.
If we want to programme so that to the value 4.00 is to correspond the value
0.00 on the display, whereas to the value 20.00 is to correspond the value
100.00 one must:
enter to the programming mode and choose the d_P parameter
responsible for the decimal point. Set up the point on the 000.00
position
choose the Ind parameter, and switch the individual characteristic on
38
choose the parameter H1 and introduce the value 4.00
pass on the Y1 parameter and introduce the value 0.00
pass on the H2 parameter and introduce the value 20.00
pass on the Y2 parameter and introduce the value 100.00
Example 2 - Programming of an inverse individual characteristic.
If we want to programme so that to the value 4.00 is to correspond the value
120.50 on the display, whereas to the value 20.00 is to correspond the value
10.80, one must:
enter to the programming mode and choose the d_P parameter
responsible for the decimal point. Set up the point on the 000.00
position
choose the Ind parameter and switch the individual characteristic on,
choose the H1 parameter and introduce the value 4.00
pass on the Y1 parameter and introduce the value 120.50
pass on the H2 parameter and introduce the value 20.00
pass on the Y2 parameter and introduce the value 10.80
Example 3 - Programming of the alarm with hysteresis
If we want to programme the alarm 1 operation so that the alarm will be switched
on at the value 850, whereas switched off at the value 100, and the alarm 2 so
that at the value 1000 the alarm will be switched off whereas switched on at
the value -199, one must:
enter into the programming mode and choose the level with
the ALr1 symbol,
enter on the level Alr1, choose PrL parameter and introduce the
value 100
pass on the PrH1 parameter and introduce the value 850
pass on the tYP parameter and choose the function designed as nor,
exit from the ALr1 level and pass on the ALr2 level,
choose the PrL parameter and introduce the value1000
pass on the PrH parameter and introduce the value -199
pass on the tYP parameter and choose the function nor.
Example 4 - Programming of an alarm operating in the given interval with delay.
If we want that the alarm 1 is to be switched on in the interval from 100 up to
300 and is to operate only after 10 transmitted values, one must:
enter into the programming mode and choose the ALr1 level,
pass on the PrL parameter and introduce the value 100
39
pass on the PrH parameter and introduce the value 300
pass on the tYP parameter and choose the On function,
pass on the dLY parameter
Assuming that the Cnt parameter has not been changed and is equal 1 (acc.
the manufacturer setting), after the dLY parameter we must introduce the
value 10. If e.g. Cnt = 2, then dLY = 5.
introduce the value 10 under the dLY parameter.
exit from the programming mode.
In case of the alarm state duration for a time longer than 10 transmitted
values, the indicator will switch the alarm relay on and the alarm diode will be
lighted.
Example 5 - Programming of an analogue output
If we want to program so that to the 0.00 value is to correspond the 4 mA value
on the current analogue output, whereas to the 20.00 value is to correspond
the 20 mA value, one must:
enter into the programming mode and choose the tYPA parameter
responsible for the type of the analogue output. Choose the PrAd
current output,
pass on the tYPA parameter responsible for the analog output type.
Choose the PrAd current output.
under the AnL parameter, one must write down the value for which we
want 0 mA on the analogue output. For this reason one must calculate
the AnL parameter:
(20 - 0 )/(20 - 4 ) = 1.25 => 0 -(4*1.25) = - 5
choose the AnL parameter and introduce the value - 5.00
choose the AnH parameter and introduce the value 20.00
40
11. EXECUTION CODES
N12 DIGITAL METERS
X
X
X
X
X XX X XXX
Inputs:
temperature programmable input.......................T
1 V d.c., 10 V d.c., 20 mA d.c., 200 mA d.c....... S
600 V d.c., 1 A d.c., 5 A d.c................................ H
rotations, frequency, period, pulse number....... O
single-phase parameters................................... P
indicator for synoptic pannel . ........................... B
acc. order *........................................................ X
unit
symbol*)
Number of digits on the display:
4 digits, digit height = 20 mm........................4
5 digits, digit height = 14 mm........................5
Display colour:
- red.....................................................................0
- green.................................................................1
Supply voltage:
230 V a.c. d.c............................................................. 1
24 V a.c. d.c............................................................... 2
Kind of terminals:
- socket plug with screw connections................................ 0
- socket-plug with self-locking connections....................... 1
Execution:
- standard execution.................................................................00
- custom-made execution **.................................................... XX
Acceptance tests:
- without a quality inspection certificate............................................ 8
- with a quality inspection certificate................................................. 7
- acc. customer’s agreement............................................................X
Unit symbol............................................................................................XXX
* Introduce the unit symbol which is to be highlighted.
** The code number is established by the manufacturer.
41
Order example: N12B 4 1 1 0 00 7 means: a N12B indicator for synoptic
panels, with 4 displays in green colour, voltage supply:
230 V a.c., d.c., kind of terminal: socket-plug with screw connection, standard execution, with a quality acceptance test.
In case of any meter failure one must contact the nearest authorized service
workshop.
12. MAINTENANCE AND GUARANTEE
The N12B indicator does not require any periodical maintenance.
In case of some incorrect unit operations:
1. From the shipping date, during the period given in the annexed
guarantee card.
One should take the instrument down from the installation and return it to
the Manufacturer’s Quality Control Dept.
If the instrument has been used in compliance with the instructions, the
Manufacturer guarantees to repair it free of charge.
2. After the guarantee period:
One should turn over the instrument to repair in a certified service
workshop. The disassembling of the housing causes the cancellation of
the granted guarantee.
Spare parts are available for the period of ten years from the date of
purchase.
The Manufacturer’s 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 specification without notice.
42
43
SALES PROGRAMME
MEASUREMENT
DIGITAL and BARGRAPH PANEL METERS
CONTROL
MEASURING TRANSDUCERS
RECORDING
ANALOG PANEL METERS (DIN INSTRUMENTS)
ANALOG and DIGITAL CLAMP-ON METERS
PROCESS and HOUSEHOLD CONTROLLERS
CHART AND PAPERLESS RECORDERS
POWER CONTROL UNITS and SOLID-STATE RELAYS
AUTOMOTIVE DASHBOARD INDICATORS
1-PHASE AND 3-PHASE WATT-HOUR METERS
NUMERICAL AND ALPHANUMERICAL LARGE SIZE DISPLAYS
ACCESSORIES FOR MEASURING INSTRUMENTS (SHUNTS AND MODULES)
MEASURING SYSTEMS (ENERGY, HEAT, CONTROL)
CUSTOM-MADE ELECTRONIC SUBASSEMBLIES ACC. TO ORDERS
WE ALSO OFFER OUR SERVICES IN THE PRODUCTION OF:
ALUMINIUM ALLOY PRESSURE CASTINGS
PRECISION ENGINEERING AND THERMOPLASTICS PARTS
PRESSURE CASTING DIES AND OTHER TOOLS
CUSTOM-MADE ELECTRONIC SUB-ASSEMBLIES
QUALITY PROCEDURES:
According ISO 9001 and ISO 14001 international requirements.
All our instruments have CE mark.
For more information, please write to or phone our Export Department.
Lubuskie Zak³ady Aparatów Elektrycznych LUMEL S.A.
ul. Sulechowska 1, 65-022 Zielona Góra, Poland
Export Department:
Tel.: (48-68) 329 53 02 or 04
Fax: (48-68) 325 40 91
e-mail: [email protected]
N12-07C/4
Tel.: (48-68) 329 51 00 (exchange)
Fax: (48-68) 329 51 01
e-mail:[email protected]
http://www.lumel.com.pl