LS-CS-M-023
PCSS-F Additions Technical Manual
Page 4-5
Original Language Version:
1.02
Released:
03/12/2013
4
4
P
P
C
C
S
S
S
S
S
S
a
a
f
f
e
e
t
t
y
y
F
F
u
u
n
n
c
c
t
t
i
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o
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n
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O
O
p
p
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4
4
.
.
1
1
D
D
o
o
w
w
n
n
E
E
n
n
a
a
b
b
l
l
e
e
S
S
a
a
f
f
e
e
t
t
y
y
F
F
u
u
n
n
c
c
t
t
i
i
o
o
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O
O
p
p
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These options enable and control movement of the pressing beam when initiated by the
operator of the press brake. The down enable function option to be selected will depend on the
solenoid valve control strategy needed, which is based primarily on the hydraulic configuration
of the press brake on which the PCSS is being installed.
It is therefore important to review the hydraulic configuration and schematic for the machine
and determine the down enable function option that is required. Selecting the appropriate
down enable option should be based on the solenoid valve outputs that need to be controlled
and the control strategy for each of these outputs.
I/O channel 9 of the ANO I/O board for the Kernel Software Interface allows the down enable
option required to be selected. Entering the appropriate value for the Down Enable Option
Selection Variable as detailed in each of the options described below will initialise the desired
down enable option when the PCSS software is started.
Note:
Lazer Safe recommends varistor protection is fitted across all valves installed on the
press brake when connected to the PCSS. Whilst resistor/capacitor and diode
protection solutions are available, varistor protection provides superior reaction time
and suppression capabilities to generated valve voltages and transients compared to
other protection solutions. The varistor also provides protection for valves with
integrated electronics as well as reducing EMI/RFI.
Resistor/capacitor protection modules can also interfere with the hardware checks
that are performed by the PCSS on the outputs on each machine cycle causing
incorrect failure conditions to be reported.
The use of diode type protection modules can also have an effect on the stopping
performance of the press brake. This may lead to increased stopping distances or
times compared to the use of Varistor protection.
4.1.1
Down Enable Option 16
Solenoids
–
High Speed
Solenoids
–
Prefill
Solenoids
–
Proportional Enable
Y00H
Y00L
Y01H
Y01L
Y02H
FIO04
–
CN2
1
2
3
4
5
Y02L
6
Y03
7
Figure 4-1: Down Enable Option 16 (CN2 - FIO04 Connections)
This down enable option provides outputs for control of the following solenoid valves on the
press brake:
•
High Speed Solenoid;
•
Low Speed Solenoid and;
•
Proportional Solenoids Enable.
