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Digital clocks – NDC Series  /  User Manual v. 2.11

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2.7 Power supply

Standard 230 VAC/50 Hz,12 VDC and 24 VDC for extra fee.

2.8 System time network

Possibility to create unified time systems in an NDC-net without the necessity to use special master clock. 

The unified time network may contain NDC clocks, GPS receiver, a synchronisation time module (Network 

Time Server RS485), remote sensors (e.g. of temperature), remote buttons to control stop watch and the 

counter and a remote output module (relay), controlled by the so called Master clock (i.e. standard NDC 

clock setup as the Master, see below).

Adjustable network clock synchronisation interval in the range 0 – 255 min (only the Master clock).

2.9 NDC-net communication network

At the physical level, the communication network is made by an RS485 interface with the baud rate 9600. 

Devices with addresses 1 – 127 may be connected to the NDC-net bus, while there must be one NDC type 

device with a dedicated address 1 in the function of the Master in the system. The bus negotiation and 

communication control is always controlled by the Master device.

Devices connected to the bus may be of the following types:

NDC clock – It displays data and, together with a remote controller, provides a user interface for the setting 

and controlling of the system. The network must contain one NDC clock with the address set to 1 (Master 

clock), which provides the control of the NDC-net.

Synchronisation device – its role is to provide precise time to the rest of the devices. The source of that 

time may be a GPS signal, DCF-77, a PC, an embedded module with an RS485 line and a protocol 

converter to the NDC-net.

Sensors – Within the range of the NDC-net they measure general quantities (usually temperature, but also 

humidity, pressure,...) and, after their processing, they send the data along the network to NDC devices 

for displaying. Data from one of two sensors may be allocated to each NDC clock. The sensor modules 

will complement the offer depending on the demand on the market and the development possibilities.

Remote buttons – They allow to place buttons for controlling the stop watch and the counter into a longer 

distance from the controlled NDC within the NDC-net.

Remote access – allows to place the switching relay or an open-collector type output to a longer distance 

from the controlling NDC within the NDC-net. This output may be controlled only by the Master clock.

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DISPLAY ACCESSORIES

Depending on the selected version of the connection of displays, the supply is complemented with the 

necessary accessories.

3.1 Standard accessories

Type of display

Standard accessories

NDC 57/4

Power supply cable

flexible 1.5 m.

NDC 57/6

NDC 100/4

NDC 100/6

NDC 160/4

Connector for the 

power supply cable.

(Cable is not supplied.)

NDC 160/6

NDC 212/4

NDC 212/6

3.2 Optional accessories

Handheld IR Remote Control – for setting clock parameters.

(Parameters such as time, date, on/off time period of each displayed value, brightness, etc.).

Temperature sensor – for displaying local or remote temperature (as per type ordered).

GPS Time Receiver – for automatic time/date synchronization with GPS 

(GPS Timer Receiver cable length can be 5 m or 10 m max., depending on type ordered).

Several modules can be connected to NDC series clocks and to the NDC-net through a communication bus 

based on RS485, which communicate with the NDC-protocol. The range of such modules is widened 

continually.

Содержание NDC 100/4 R L20

Страница 1: ...Digital clocks NDC 57 4 6 R L20 NDC 100 4 6 R L20 User Manual v 2 11...

Страница 2: ...dress setting diAd 9 5 6 3 Network configuration ConF 10 5 6 4 Allocation of sensors temperature display address setting S1Ad S2Ad 10 5 6 5 Allocation of the remote button address setting PbAd 10 5 6...

Страница 3: ...4 superbright 7 segment LED modules 4 88 88 57 23 NDC 57 6 6 88 88 88 57 23 NDC 100 4 4 88 88 100 40 NDC 100 6 6 88 88 88 100 40 NDC 160 4 superbright elliptic LEDs for outdoor use 4 88 88 160 70 NDC...

Страница 4: ...DC net Counter counting up down Automatic switching of the display format range 1 s to 99 days 23 hours 59 minutes 59 seconds COUNT UP or COUNT DOWN mode adjustable limit Functions START STOP PAUSE RE...

Страница 5: ...ndicular distance 15 m Time and date setting Activation of selected display modes time date temperature stop watch counter remote sensor intervals of alternating data display Limit and modes for the c...

Страница 6: ...and a protocol converter to the NDC net Sensors Within the range of the NDC net they measure general quantities usually temperature but also humidity pressure and after their processing they send the...

Страница 7: ...network The connectors are located at the back of the display and they are marked as RS485 and 17 V RS485 The type of the connector used and its connection are described in detail in the clock s circ...

Страница 8: ...iod Sensor 2 reading period Stopwatch reading period tMPE dtPE CdPE S1PE S2PE StPE 15 s 5 s 0 s 0 s 0 s 0 s tIME TIME Year setting Month setting Day setting Hour setting Minute setting Shift of hours...

Страница 9: ...layed when browsing in the menu Arrow buttons and are used for browsing in the menu A selected submenu should be confirmed by the OK button When the browsing stops in a submenu after 2 seconds the val...

Страница 10: ...lowing items tMPE Time Period default 15 dtPE Date Period default 5 CdPE Coundown Period default 0 S1PE Sensor 1 Period default 0 S2PE Sensor 1 Period default 0 StPE Stopwatch period default 0 The ran...

Страница 11: ...ed Note If the clock clock network is connected to a synchronisation device GPS receiver etc which itself provides the correction of the summer winter time this function has to be switched off on all...

Страница 12: ...or there may be problems with the communication with that module If there is a synchronisation module with an integrated thermal sensor in the NDC net and there is a requirement to display its tempera...

Страница 13: ...er 5 4 Data display period setting diSP If you want to ensure only the displaying of the stopwatch set the parameters for the rest of the displayed data to 0 Types NDC xxx 4 display the time measureme...

Страница 14: ...he time from the set value downwards to 00 00 00 When the end of the interval is reached the built in relay is switched on while the duration of the switch on state can be adjusted In the settings it...

Страница 15: ...set relay on period is 0 sec the relay will not be switched on at the selected time 2 Switching of the relay is signalized by the LED in the right lower corner after second or minute reading that is t...

Страница 16: ...00 00 for counting up or the preset limit for counting down A short depressing of the button will start the time counting START a short repeated depressing will freeze the current value of the counted...

Страница 17: ...ction at the set time during a day will be active And vice versa if a respective day has the OFF flag e g weekends the relay will not be switched on that day After selecting the Wda item select the re...

Страница 18: ...ices Otherwise the ID table of devices may not correspond with the reality and the configuration may have to be repeated 6 3 Viewing of the list of devices LiSt MEnu SEt ConF LiSt The list of found de...

Страница 19: ...r supply is resumed the relay output will be switched on immediately 8 RESET RESTORING OF ORIGINAL VALUES rSt MEnu SEt ConF rSt A reset will restore the original settings of the clock see chapter 5 1...

Страница 20: ...18 10 CONNECTION DIAGRAM...

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