Plc Programming Suggestions For Evaluating The Signal Outputs - Bosch Rexroth LU 2 Assembly Instructions Manual

Automatic lubrication unit
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A:
PLC-terminal strip
Inputs
B:
PLC-terminal strip
Outputs
l1:
Cable white, output OK
l2:
Cable black, output Err
l3:
Cable brown,
voltage supply
B05 No signal green
B06 No signal red
B08 Cable break
1
):
When using B02, l3:
Fault indication only when
the lubrication unit is
powered.
2
):
B01, B09 and B11
optional:
error display only
necessary when saving.
Q2:
Output Q2 = High if:
• Fault
• Oil container empty
• Cable break
A:
PLC-terminal strip
Inputs
B:
PLC-terminal strip
Outputs
l1:
Cable white, output OK
l2:
Cable black, output Err
l3:
Cable brown,
voltage supply
B05 No signal green
B06 No signal red
B08 Cable break
1
):
Connect output B04
directly to the input B13,
if B11 B12 is not to be
used.
2
):
When using B13, l3:
Fault indication only when
the lubrication unit is
powered.
3
):
B11, B12 optional
Q1:
Output Q1 = High if:
• Oil container empty
Q2:
Output Q2 = High if:
• Fault
• Cable break
8.6.1

PLC programming suggestions for evaluating the signal outputs

3
l3
in
2
in
l2
B06
1
inv
B05
1
inv
1
in
l1
A
Fig. 19:
PLC programming suggestion with one output signal
B02
on delay
50 sec
2
in
l2
B06
1
B08
inv
&
B05
and
1
inv
1
in
l1
3
in
l3
A
Fig. 20:
PLC programming suggestion with two output signals
1
)
B02
&
and
B07
B04
1
on delay
or
120 sec
B08
&
and
B01
B09
&
on delay
and
50 sec
2
)
B03
1
)
Set
Q
Reset
B07
latching relay
B04
B10
1
1
on delay
or
120 sec
or
B12
3
)
B01
B09
1
&
or
B11
on delay
and
50 sec
Set
Q
Reset
latching relay
2
)
3 842 358 814/2017-01, MIT: LU 2, Bosch Rexroth AG
Installation
39/54
Q2
B11
1
Set
Q
out
Reset
latching relay
B
358 814-13
Q1
1
out
B13
Q2
&
1
out
and
B
358 814-14

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