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Description:
LUB-D is properly connected to an external controller via the electrical interface and
connected to the power supply.
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LUB-D sends a permanent output signal (high level) to PIN 4 which indicates to the
external control (PLC) that it is ready for operation. This output signal must be perma-
nently and continuously present for >3 seconds. This condition must be fullfilled to control
LUB-D by a PLC.
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The control signal 12 seconds with a signal length of 12 (11.9 ... 12.1) seconds high
level can be sent to LUB-D from the external control (PLC).
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Immediately after the control signal drops the motor run (ML) of LUB-D starts and 0.16
cm³ lubricant is conveyed to the outlet. Simultaneously, LUB-D sends a low level output
signal to the external controller (PLC) to confirm the duration of the motor run (ML).
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The motor running time (ML) depends on various conditions, including the present or
built up counterpressure in the hydraulic system and the temperature. The motor running
time (ML) is 7...17 seconds.
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At the end of an error-free and successful motor run (ML) the output signal at LUB-D
changes from a low level to a high level for a short pause time P = 0.5 seconds.
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A total of 40 engine runs and dispenses will take place immediately one after the
other. 40 x 0.16 cm³ = 6.4 cm³ lubricant is conveyed from the cartridge to the outlet.
A new control signal can be sent from the external controller (PLC) at the earliest of >3
seconds after the motor run ended error-free and successfully. In the meantime, LUB-D
does not process any control signals.
In order to ensure a reliable and unambiguous recognition of the control signal a
pause must be observed. The control signal 12 seconds requires a pause time (Tp) of at
least 706 seconds between two identical or different control signals.
At a LUB-D version with two pump units 40 filling strokes
per pump unit
are triggered
when the control signal is triggered for 12 seconds. The pause time (Tp) is doubled.
If the integrated microelectronics of LUB-D have detected an error during or immedi-
ately after tthe motor run (ML), this is transmitted to the external controller (PLC) by the
corresponding output signal (chap. 8.3).
Summary of Contents for Lubricus LUB-D Series
Page 1: ...User manual LUB D...
