Operating Instructions MIL 72/1 digi 20
Contents
1. Notes If you keep the h and m keys pressed down for more than 2 seconds the display will enter fast forward scroll mode B 4 3 Entering the switching times You have 20 memory locations available Each switching time takes up one memory location Keep pressing the Prog key until a free memory location is shown in the display Programme ON or OFF with the lt W key CQ OFF o 0 N Enter the hour using h Enter the minutes using m If a switching command is to be carried out every day 1 2 3 4 5 6 7 then store using the key otherwise select the day s it is to be carried out by using the Day key W hen the day selection is left blank the programmed switching instruction operates at the same time every day 23456 Monday Saturday 2345 Monday Friday 67 Saturday Sunday Selection of single days 1 Mon 2 Tues Save the switching time with the key he time switch enters the automatic operating mode and displays the current time of day Begin any further entry of a switching time with the Prog switch your entry is incomplete the segments not yet selected will blink in the display After programming is completed and you return the timeswitch to the current time display with the key the timeswitch will not activate any switching instruction required for the current time You may need to manually select the desired switching state with the lt k2. FR 18 f all memory locations are occupied the display FR 22 appears 5 4 Changing the programmed switching times Press the Prog key repeatedly until the switching time you want o change is displayed You can now enter the new data See point 4 3 Notes on storing switching times f you end your entry of the switching times by pressing the Prog key then the switching time you have entered will be stored and the next memory location displayed Entry of further switching times is also carried out as described in point 4 3 n addition a complete switching command is stored automa tically after around 90 seconds provided no other key is pressed he time switch then enters the automatic operating mode and displays the current time again 5 5 Deleting individual switching times Press the Prog key repeatedly until the switching time you wish o delete is shown in the display hen set to using the h or m key and keep the key pressed down for around 3 seconds he switching time is now erased and the current time is displayed 5 6 AM PM time display you press the 1h and h keys at the same time the ime display switches into the AM PM mode mostly used in English speaking countries 6 0 Technical data Connection see unit imprint Switching capacity see unit imprint Ambient temperature 10 C to 55 C Running reserve 5 hat 20 C Memory locations 20 Shortest switching time 1 min Progra
3. Operating Instructions MIL 72 1 digi 20 WA EKF 3045 10 97 S MMS D Str 80 10 0736 7 97 00538 1 Putting into operation Electrical units may only be installed and assembled by a skilled elec trician The term skilled electrician is defined in VDE 0105 N otes The unit contains well designed electronic components which are lar gely protected against external interference However it must be remembered that extremely high interference voltage peaks can be superimposed on the mains voltage depending on the installation site Interference which despite all internal protective measures can also effect an electronic unit also arises when contactors are switched In order to guarantee the greatest possible operational reliability the following details must be observed a In the case of larger systems a suitable varistor or RC element must be used to provide interference suppression for contactor coils directly switched by the time switch b If inductive direct current loads are switched a suppressor diode must be installed c Inductive loads and particularly fluorescent lamps place particular demands on the output contacts In each individual case check whether it is appropriate to install an isolating relay or contactor 2 Assembly and connection 2 1 Surface mounting Fit the base in accordance with local conditions Fit the time switch and secure with the screws A 2 2 Connecti
4. ey Thereafter as the unit encounters further switching instructions in the memory in real time it will correctly activate all subsequent switching instructions N ote Note what position the switch is in ON or OFFO Depending on the switching program and the time of day select the desired switch position with the key For channel 1 and or 2 e g 5 0 Additional Functions 5 1 Switching from summer time to winter time and vice versa Press the 1h key once 5 2 Manual Override Switch lt S With the lt you can change the current switching settings at any time The switching program already entered is not altered Automatic Mode Manual Mode Continuous O peration s e O 0N O 0FF Continuous ON o 0FF amp ON O Continuous O FF The switching If the current You can only return times correspond to the program entered switching mode is changed manually the next switching time will be carried out automatically again according to automatic mode from the continuously ON and continuously O FF O switching modes by pressing 4X key to the entered switching program 5 3 Reading the programmed switching times Pressing the Prog key displays the programmed switching imes until the first free memory location appears in the display f you now press the Prog key once again the number of free memory locations will be displayed e g
5. mmable every minute
6. on See unit imprint circuit diagram La 2 3 Assembly with accessory terminal cover Fit the base in accordance with local conditions connect and attach the terminal cover article number 01 78 0004 6 Then fit the time switch and secure with the screws A 3 Sealing with sealing glass IP 40 Seal using the accessory sealing glass attach and seal the sealing glass article number 01 78 0016 6 The sealing glass can only be removed with a suitable tool 4 Operating the time switch The steps marked with the symbol Ja are necessary to carry outa switching program 4 0 Preparing for Operation B 4 1 Activate the Res switch RESET to reset the time switch to its default settings activate using a pencil or similar pointed instrument Do this every time you wish to reset the time switch to erase all switching times and the current time of day After approximately two seconds the following display appears Manual switch Summer and winter time setting Reset Enter Enter switching the hours times Week days flash Input time Enter minutes Enter weekday s p 4 2 Enter current time and weekday Keep the key pressed down During the summer time period press the 1h key once Enter the hour using the h key Enter the minutes using the m key Enter the day using the Day key 1 Monday 7 Sunday Release the key The colon now blinks once a second
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