42
1
4
3
2
8.
Input and output signals - external control (PLC)
To electrically connect LUB-V to the PLC of your machine the device provides a 4-pin
interface which is designed as a standard industrial M12x1 plug connection.
LUB-V can be switched off completely in pulse control mode by switching off the
supply voltage. The settings made are not lost. After reapplying the supply voltage LUB-V
checks itself automatically but only operates after receiving an input signal from the PLC.
To operate LUB-V via an external controller (PLC) in pulse control mode a program
corresponding to the communication protocol must be created in the PLC. A basic
flowchart for commanding LUB-V can be found in the appendix (chapter 11.4).
The output signal at PIN 4 can be tapped for further processing (e.g. indicator light or
external control). The maximum permissible current output must not exceed I
max
< 20mA.
No inductive load (e.g. relay) may be connected!
After a long standstill of LUB-V a "quick check" is recommended (chapter 6.3.6).
Alternatively, a certain number of dispenses can be triggered via the PLC (chapter 8.2).
PIN assignment (PLC)
PIN
Assignment
Colour
1
+24 V DC
brown
2
Input Signal PLC
LUB-V
white
3
Ground
blue
4
Output Signal LUB-V
PLC
black
Type: M12x1 female connector; 4-pin, A-coded
To command LUB-V via an external controller (PLC) it is necessary to switch LUB-V to
pulse control mode PUL in PRO menu (chapter 6.3.8).
In pulse control mode LUB-V operates as a pulse-controlled lubrication system only if
unalterable input signals (high level) are transmitted from the PLC to LUB-V via PIN 2 in
a defined sequence. LUB-V signals the respective status to the PLC via high/low levels
which can be tapped off at PIN 4 and thus enables comprehensive control or, by suitable
programming of the PLC, differentiated evaluation of the different states. To integrate
LUB-V into an external control one input and one output must be provided on the control
side.
8.1
Pin assignment - external control (PLC)
