EN
24
Cycle counter
The settings can be made via the operating unit (key position "0" or "LOCK 2") or via the interface (key
position "LOCK 2"). The functions of the various key positions are described in the "Key-operated switch"
chapter.
Usage of the cycle counter only makes sense if you always use the same hanger set.
The centrifuge is fitted with a cycle counter, which counts the rotor cycles (centrifugation runs) of the different rotor
codes (see also chapter, "Rotor recognition").
In the swing-out rotors, the cycle counter is used to determine the rotor cycles (centrifugation runs) of the hangers.
If a rotor is recognized the first time, the centrifugation run is canceled. After pressing any key, Enter max cycles =
〈 30000 〉 is displayed. The maximum permitted number of rotor cycles specified on the hanger has to be entered
before the centrifugation run can be restarted (see chapter "After starting the first centrifugation run, enter the
maximum permitted number of rotor cycles or deactivate the cycle counter").
For rotors and hangers which are not labelled with the maximum permissible number of running cycles, the cycle
counter can be deactivated (see chapters "After starting the first centrifugation run, enter the maximum permitted
number of rotor cycles or deactivate the cycle counter" and "Activating or deactivating the cycle counter").
Each time the lid is opened, the number of rotor cycles (centrifugation runs) of the current rotor code is displayed,
e.g. CYCLES 5120 of 30000
For centrifuges with a program version up to V01.17:
The control of the automated system must query the current number of run cycles after each centrifugation run via
the interface and compare this with the input maximum permissible number of run cycles.
For details, see the instructions AH5680-01EN "Serial communication and PC parameters", chapter "4.9 Rotor cycles
commands".
Once the maximum permissible number of run cycles of the hangers is reached, the hangers must be
immediately replaced with new hangers for safety reasons.
Centrifuges with a program version from V01.18:
Once the entered maximum permissible number of run cycles of the hangers is reached, all subsequent
centrifugation runs will be blocked as a precaution.
∗ MAX CYCLES PASSED ∗ is shown on the display and the START command is responded to with "NAK" via the
interface. For details, see the instructions AH5680-01EN "Serial communication and PC parameters", chapter "4.9
Rotor cycles commands".
If ∗ MAX CYCLES PASSED ∗ is displayed, the hangers must be immediately replaced with new hangers for
safety reasons. In this case, notify the manufacturer of the automation system.
After replacing the hanger, the cycle counter has to be reset to "0" when the rotor is at rest (see chapter "Reset cycle
counter to "0" and enter maximum permitted number of rotor cycles").
24.1
After starting the first centrifugation run, enter the maximum permitted number of cycles or deactivate
the cycle counter
•
Enter max cycles = 〈 30000 〉 is displayed.
Use the knob
to set the maximum permitted number of rotor cycles specified on the hanger.
For rotors and hangers which are not labelled with the maximum permissible number of running cycles, the cycle
counter can be deactivated. Turn the knob
deactivated).
•
Press the
key to save the setting.
START
Briefly, Store max cycles ... is displayed as confirmation.
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to the left until disabled is displayed ( disabled = cycle counter is
Rev. 12 / 04.2020
AB5680DEENFRIT