- protection of the operator from being squeezed between the ram and the matrix
(all other safety monitoring functions are carried out by a safety control (e.g. safety PLC
FPSC
).
- The
safety PLC
gives a safe signal to the
AKAS®
inputs
FUS
and
FUO
, if a closing movement is ab
out to be performed, and another
safe signal
is given to
SGO
,
SGS
and
SP
, if the press closes safely
at slow speed. For this,
the signal lines must be monitored for eventual short-circuits by the
safety PLC.
- The safety PLC evaluates the safety outputs OSSD1 and OSSD2 of the AKAS® and stops the
closing movement, if there is no signal from the OSSDs.
- The machine control system must carry out an overrun traverse test of the press at least after every
voltage reset, and this test must be repeated at least within the next 30 h. By doing this, the overrun
traverse must not exceed the value of 10 mm at the
AKAS®-LC II M .
24
function
terminal
receiver
transmitter
26
3
4
5
6
7
8
9
10
11
12
13
25
24
23
22
21
20
19
17
16
15
14
18
2
1
Electrical connections - Description / Wiring diagrams
6
-operation only with additional safety PLC (e.g.
FPSC
)
6.4
Doku Nr. 995 Stand 1.12.2011 / Aui
1
2
3
4
5
6
Terminals of the transmitter
Nr
1
designation
+S
meaning
+Ub transmitter
2
6
-S
Erde
-Ub transmitter
functional ground
Anschlussklemmen Empfänger
Nr
1
designation
Erde
meaning
functional ground
signal level
2
3
4
5
+Ub 24VDC
-Ub 0V
power supply voltage
power supply voltage
RS 232 GND
-Ub Sender
Meldeausgang (Status-/Fehlermeldung)
connection for -Ub AKAS-transmitter
6
7
8
9
+Ub Sender
FUS
connection for +Ub AKAS-transmitte /
key-operated switchfor adjustment
input
Start / Stop
closing stroke
FUO
SGS
input
Start / Stop
closing stroke
input
slow speed position
10
11
12
20
SGO
SP
input
slow speed position
input
safety point
SGA
HUSP
output
slow speed request by AKAS
output
message of box bending function
+24V if FUS is triggered
or key-operated switch is on
0V Press brake stop
+24V Press brake close
0V Press brake stop
+24V Press brake close
0V: at fast speed
+24V: at slow speed
0V: at fast spoed
+24V: at slow speed
0V: within fast speed range
+24V: within slow speed range
0V only slow speed permitted
+24V fast-/slow speed possible
+24V if box-bending is selected
23
24
25
26
OSSD1
OSSD2
safety output
release of closing stroke
safety output
release of closing stroke
KAST
RS 232 out
input
box bending
output message (State-/error)
+24V if released
+24V if released
+24V pulse min. 100 ms
inputs
equi-
valent
inputs
equi-
valent
AKAS®-LC II M
FIESSLER
E L E K T R O N I K
Pin 1
Pin 14