Lumel DLZ User manual

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DIGITAL CLOCK
DLZ Type
Service manual

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Table of contents:
1. APPLICATION ..............................................................................................................5
2. CLOCK KIT ..................................................................................................................5
3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY INSTRUCTIONS ............................................5
4. CONSTRUCTION AND INSTALLATION ..................................................................................6
5. ELECTRICAL CONNECTIONS .............................................................................................6
6. CONFIGURATION ..........................................................................................................7
7. INTERFACE .................................................................................................................7
8. SPECIFICATION ............................................................................................................9
9. VERSION CODE .......................................................................................................... 10
10. BEFORE SANDING A FAULT REPORT................................................................................. 11
11. MAINTENANCE AND SERVICE ......................................................................................... 11

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1. Application
Digital clocks of the DLZ type are used to display current time indoors. They can also display the
current date and, in cooperation with the P18 transducer, the temperature and humidity. The communi-
cation interface of the clock allows for easy configuration of the clock, and the second inbuilt interface
RS485 makes it possible to cooperate with the temperature and humidity transducer. The transducer
output values can be read by means of the user interface.
The DLZ clocks are equipped with a programmed brightness function to allow for energy savings when
the clock does not need to work, or when full brightness could dazzle the user.
The DLZ clocks are used wherever there is a need for the current time, date, temperature and humidity
to be displayed.
It is possible to adjust the clock in accordance with the customer alignments.
2. Clock kit
The clock kit consists of:
lDLZ clock - 1 pc.
lAssembly holder - 2 pc.
lService manual
lGuarantee certificate
3. Basic requirements and operational safety instructions
The DLZ clocks conform to the PN-EN 61010-1 safety standard. The following advice must be
observed and adhered to during the installation process and operational use:
lOnly qualified technical personnel should perform the installation and connections of the clock.
All possible safety stipulations should be observed.
lThe correctness of electrical connections must be checked before supplying them with current.
lDo not use an autotransformer for connecting the clock to the mains supply.
lDo not mount the clock outdoors.
lThe display must be used according to its intended purposes only.
lRemoving the panels housing within the guarantee period will cause the guarantee to expire.
lDisconnect the display from the power supply before opening the housing. The housing contains
live terminals hazardous to life and health.
lWhen connecting the mains, protect the device with the breaker switch or circuit breaker. The
mentioned switch should be in the vicinity of the device, easily accessible to the user and
labelled as the cut out of the device.

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4. Construction and installation
The DLZ clock is made of black painted aluminium sections. The housing offers Protection Classifi-
cation IP40 in general and of IP 20 on the housing side where connections are located. The view and
dimensions of the clock are shown in Fig. 1.
Figure 1. View of the clock.
The clock may be wall mounted or underslung. It be mounted at any angle.
5. Electrical connections
Supply and interface connections should be connected according to this instruction. Improper con-
nection could damage the clock, so prior to making connections carefully read the information given
in chapter 3.
For connecting interface signal, use cable consisting of twisted pairs from the shield. Each pair should
contain the A and B line of each interface. The connecting terminals and function of the terminals are
shown in Figure 2.
Figure 2. Description of the clock’s terminals.

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If the ambient temperature was changed rapidly before installation, wait for at least 60 minutes before
first switching it on.
Attention: RS-485 interfaces are galvaniclly separated from one another and galvanically separated
from power supply. Do not connect interface and signals together.
After switching on the clock performs a display test. It lights all segments and increases their brightness.
After reaching the maximum brightness, the clock proceeds to normal operation.
Attention: If during the cooperation of clock and P18 transducer, the clock displays time instead of
temperature or humidity.
6. Configuration
The digital DLZ clock can be set through the RS485 interface, using the MODBUS RTU standard. The
default transmission parameters of the clock are as follows:
lAddress: 1;
lMode: RTU 8n2;
lBit rate: 9600 bps.
The configuration can be modified by writing the required value into the clock registers. The registers
map is described in the next charter. Any program enabling to change the value written in the device’s
registers and working in the MODBUS RTU standard can be used to change the configuration set-
tings.
Modifiable basic settings are as follows::
lThe connection of the panel and the computer or master device parameters;
lThe transmission parameters between the panel and the P18 transducer.
lThe brightness level for day and night, and the hours of day- and night time changes.
lThe display mode - determines which settings are to be displayed by the clock.
lThe time of displaying the parameter - determines the time of displaying the value of the
individual parameter.
lCurrent time and date.
lThe setting of the P18 connection.
The DLZ clocks can display: time, date, temperature and humidity. The user can choose one of the
following configurations to display:
lTime only.
lDate only.
lTime and temperature.
lTime, temperature and humidity.
lTime, date, temperature and humidity.
7. Interface
DLZ clocks contain 2 serial interfaces, working according to the MODBUS RTU standard. One interfa-
ce is the master in the MODBUS network and it is used to connect the humidity and temperature con-
verter P18. The other is the slave in the network, and is used to connect the clock to the master system,
for example the computer. The slave interface makes it possible to set up and read values from the
P18 converter.
The DLZ clock is equipped with MODBUS functions 3, 16 and 17.

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The register map of the clock is as follows.
Register
Address Operation Scope Description Default
4000 RW 1…247 Address of interface 1 - user interface1 1
4001 RW 0…3
Mode of operation of interface 1:
0: RTU 8N1
1: RTU 8N2
2: RTU 8E1
3: RTU 8O1
1
4002 RW 0…9
Interface 1 bitrate [b/s]:
0 – 2400; 1 – 4800; 2 – 9600; 3 – 14400;
4 – 19200; 5 – 28800; 6 – 38400; 7 – 57600;
8 – 76800; 9 – 115200
2
4003 RW 1…50 Response time of the slave device for port 2 shown in 100 ms
multiple 5
4004 RW 0…3
Mode of operation of interface 2:
0: RTU 8N1
1: RTU 8N2
2: RTU 8E1
3: RTU 8O1
1
4005 RW 0…9
Interface 2 bitrate [b/s]:
0 – 2400; 1 – 4800; 2 – 9600; 3 – 14400;
4 – 19200; 5 – 28800; 6 – 38400; 7 – 57600;
8 – 76800; 9 – 115200
2
4006 RW 1…100 Daytime brightness level 100
4007 RW 1…100 Nighttime brightness level 100
4008 RW 0…2359 The day starting hour 600
4009 RW 0…2359 The night starting hour 2200
4010 RW 0..4
Display mode:
0 – time only;
1 – date only;
2 – time; temperature;
3 – time; temperature; humidity;
4 – time; date; temperature; humidity
2
4011 RW 1…250
Page duration time - the time interval of displaying a given
parameter value in the displaying cycle. The time is given as
100 ms multiple.
50
4012 Current time in format the hour *100 + minutes
4013 Current time - seconds
4014 Current date - month*100 + day
4015 Current date - year
4016 Status
4017 Status of connected devices

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Registers 43XX - configuration for reading additional devices
Register
Address Operation Scope Description Default
4300 RW 0,1…247 Address of slave device. 0 - switches off the device off 1
4301 RW 0…65535 Base address. 7501
4302 RW 1…10 Number of registers read 4
4303 RW 0…6
Register type:
0 – char type variable
1 – unsigned char type variable
2 – integer type variable
3 – unsigned integer type variable
4 – long type variable
5 – unsigned long type variable
6 – float type variable
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4304 RW 1…60 Review time in seconds. Determines the frequency
of querying the slave device. 1
The 75XX registers - read values and system settings (fan operation)
Register
Address Operation Scope Description
7500 R NA Device 1 - The first read register. Temperature. NA
7501 R NA Device 1 - Second read register. Humidity. NA
7502 R NA Device 1 - Third read register. NA
7503 R NA Device 1 - Forth read register. NA
7504 R NA Device 1 - Fifth r read register. NA
7505 R NA Device 1 - Sixth read register. NA
7506 R NA Device 1 - Seventh read register. NA
7507 R NA Device 1 - Eighth read register. NA
7508 R NA Device 1 - Ninth read register. NA
7509 R NA Device 1 - Tenth r read register. NA
8. Specification
Power consumption < 15 VA
Display The display field consists of seven-segment displays
100 mm and 57 mm high.
Communication:
- interface 2 ´R-S485 galvanically separated
- transmission protocol MODBUS RTU
- functions performed 03, 16, 17
- data format 8n1, 8n2, 8e1, 8o1
- bitrate [KB/s] 2,4; 4,8; 9,6; 14,4; 19,2; 28,8; 38,4; 57,6; 76,8; 115,2
- max response time < 300 ms

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9. Version code
Digital clock DLZ - XX X
Version
Standard ........................................... 00
Special ..............................................XX
Acceptance tests
No additional requirement ........................0
Quality certificates required......................1
To be agreed on with the customer........ X
Coding example:
DLZ - 00 0 designates a DLZ clock standard version with no additional acceptance tests performed.
X – the numbering to be determined by the manufacturer
Response to power failure
and return The configuration data are saved.
Dimensions see Fig. 1.
Case protection classification IP 40,
IP 20 on the side of the connecting pins
The reference conditions and nominal operation conditions.
- operating temperature 0...23...50°C
- storage temperature - 20...75°C
- humidity 25...95%
- power supply 85...230...253 V a.c.
- frequency 45...50...60 Hz
- working position any
Standards conformance
Electromagnetic compatibility:
- noise immunity acc. to EN 61000-6-2
- interference emission acc. to EN61000-6-4
- power failure immunity acc. to EN 61000-6-2
Safety requirements:
EN 61010-1 standard compatible
• case insulation: basic
• insulation between circuits: basic
• installation category III
• contamination degree 2
• maximum working voltage difference between earth and the power supply circuits 300 V
and other circuits 50 V.

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10 Before sanding a fault report
If the clock does not work satisfactorily; please check directions below prior to sending a fault report.
Trouble Solution
The time display
flashes
The clock’s settings are unreliable or the clock’s settings were chan-
ged. Try to set up the clock.
Temperature and humidity
are not displayed.
Check the clock’s configuration and change the contents of register
4010 if needed.
If the configuration is proper, check the connection to the transdu-
cer. In case of transmission faults the clock displays the time instead
of the temperature and humidity.
The clock displays false time
and date
Set the time of the clock again. The clock can loose the current time
and date due to longer power cut’s. Other settings are saved.
The clock displays the time
for longer than the date.
Check the clock configuration and register 4010 contents. The clock
is set to read the P18 converter’s data, and the converter is discon-
nected or works improperly.
Lack of the communication
with the clock
Check if connections are proper and whether the transmission para-
meters settings conform to the clock’s settings.
11. Maintenance and service
DLZ clocks do not need periodical maintenance. For cleaning the clock do not use any dissolvent’s,
petrols or aggressive chemicals which could damage the clock’s painted surfaces or front glass.
Most suitable for cleaning are antistatic cleaning foams. Do not moisten the inside of the clock while
cleansing.

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DLZ-07
Lubuskie Zak³ady Aparatów Elektrycznych LUMEL S.A.
ul. Sulechowska 1
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Fax: [phone]
e-mail: [email protected]
http://www.lumel.com.pl
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