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PCSS-A Series Technical Manual
An example of the conditions for this valve monitoring option can be seen in
Safety
Sol.
Mon.
1
0
X
X
0
1
Legend: 0 = Off or Low, 1 = On or High and X = No effect.
Details of the fault conditions associated with this option are shown in
Safety
Sol.
Mon.
0
1
1
0
0
0
1
1
Legend: 0 = Off or Low, 1 = On or High.
To select valve monitoring option 24 during the PCSS configuration, set the initial value for
the valve monitoring option selection variable to 24 as described in
14-5. This will ensure that this option is initialised with all required inputs activated when the
PCSS software is started.
14.25 Valve Monitoring Option 25
This option is used for monitoring the prefill and safety valves on the press brake with
standard inputs on the PCSS unit provided for monitoring normally closed contacts for each
of the solenoid valves as shown in
An example of the conditions for this valve monitoring option appears in
Page 222
Original Language Version: 1.25
Proportional
Sol.
Mon.
Valve Zero
X
X
No
1
0
No
0
1
Yes
Table 14-37: Valve Monitoring Option 24 Conditions
Proportional
Sol.
Mon.
Valve Fault
0
1
No
1
0
No
0
0
Yes
1
1
Yes
Table 14-38: Valve Monitoring Option 24 Fault Conditions
2
2
1
3
1
3
Figure 14-24: Valve Monitoring Option 25 (AIO Connections)
Figure 14-24
Description
Safety solenoid switched on.
Proportional solenoid switched on.
All monitored valves are switched off.
Description
Valve zero output set. Normal operating condition.
Valves enabled for movement. Normal operating condition.
Solenoid valve switch off fault for all (as shown) or any
monitored valves.
Solenoid valve switch on fault for all (as shown) or any
monitored valves.
Valve Monitor – Safety Y2
Valve Monitor – Safety Y1
Valve Monitor – Prefill Y2
Valve Monitor – Prefill Y1
2
2
1
3
1
3
24VDC
0VDC
for the AIO.
LS-CS-M-046
Table
14-37.
Table
14-38.
Sections 9.2
and
Figure
IOA – CN4
X23
12
X22
11
X21
10
X20
9
X19
8
X18
7
X17
6
X16
5
X15
4
X14
3
X13
2
X12
1
Table
14-39.
Released: 12/09/2024
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