Seko KRONOS 50 - Electrical Connections Diagram and Details; Operating Unit and Controls; Control Key Functions

0000137630 Rev. 2.0 5
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6.1 Electrical Connections
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Terminal number
Description
Electrical features
1 - 2
Power supply
100÷240 VAC (50–60Hz)
3 - 4
Trigger 1 input signal
24÷240 VAC or VDC
5 - 6
Trigger 2 input signal
24÷240 VAC or VDC
7 - 8
Alarm relay output
250VAC 8A
9 - 10
9
Pole + (mA)
Input mA
0/4÷20 mA (Input impedance: 200 ohm)
10
Pole - (GND)
10 - 11
10
Pole - (GND)
Pulses input
Pulses free from voltage (pulse emission meter;
dry contact: on-off, maximum frequency 1KHz)
11
Pole + (Pulse)
12 - 13
Level control probe input
Dry contact (on-off)
14 -15 -16 -17
Not used
Not used
8. OPERATING UNIT
8.1 Control Keys
The control keys are designated as follows:
Key
Description
Starts and stops the pump. In the event of a level alarm (alarm function only), flow
alarm and active memory alarm, it deactivates the signal on the display.
Used to “exit” the various menu levels. Before definitively exiting the programming
phase, you will be asked if you wish to save any changes.
When pressed during the pump operation phase, it cyclically displays the
programmed values on the display.
When pressed at the same time
or keys, it increases or decreases a
value dependent on the selected operating mode. During programming it carries out
an “enter” function, meaning that it confirms entry to the various menu levels and
modifications within the same.
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Used to run upwards through the menu
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Used to run downwards through the menu or for the priming, keeping it there for at
least 3 seconds, pump start running at 100% until the
key is pressed.
Used to increase the numerical values to be changed. Can be used to start dosage
in Batch mode.
Used to decrease the numerical values to be changed.