Gruetzner LUBRICUS LUB-V, Руководство пользователя

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8.2.5 Control/input signal „Acknowledge error“
The „Acknowledge error“ control signal is used to acknowledge the E2 overpressure or E3 over/
undervoltage errors after they have occurred previously and have been communicated by the
LUB-V to the PLC. It is the only control signal that the LUB-V can process if an error message
was sent in response to the previous motor run. Regardless of the principle possibility of remote
acknowledgement of an error, it is essential to identify and eliminate the cause when an error
message is present.
Description:

The LUB-V is properly connected to an external controller via the electrical interface and con-
nected to the power supply.

Pulse mode is activated on the LUB-V.

There is an E2 or E3 error at LUB-V.

The output signal sent from the LUB-V to PIN 4 to the external controller reports an error mes-
sage E2 or E3 back.

An identification of the cause of the error message has taken place on the LUB-V and it has
been eliminated.

The control signal „Acknowledge error“ with signal length of 1700 (1675 ... 1725) milliseconds
high level can be sent from the external control (PLC) to the LUB-V.

After the end of the control signal, the integrated microelectronic checks the LUB-V independ-
ently:
(
If this internal check is successful , the error E2 or E3 is thus acknowledged
and the LUB-V is ready for operation again.
(
If this internal check is not successful , the LUB-V continues to send an output signal
that defines an error. The error is still present. In this case, check the lubrication point
and the LUB-V again and then send the „Acknowledge error“ control signal again. If the
second check is again unsuccessful, disassemble the LUB-V with the lubricant cartrid-
ge screwed on and return the complete lubrication system to the manufacturer with a
detailed description of the error.

At the earliest >500 milliseconds after the end of the response signal, a possible next control
signal can be sent from the external control (PLC). For the characteristics and interpretation of
the output signal, refer to Chap. 8.3. In the meantime, the LUB-V does not process any control
signals.