Application Examples - E. DOLD & SOHNE SAFEMASTER LG 5928 Manuel D'utilisation

Application Examples

L1
(+)
on
A1(+) S11 S33 S34
LG5928.41
A2(-) S21 S22
N
(-)
Single channel emergency stop circuit. This circuit does not have any
redundancy in the emergency-stop control circuit.
Suited up to SIL2, Performance Level d, Cat. 3
L1
(+)
on
A1(+) S11 S33 S34
LG5928.41
A2(-) S11 S32
N
(-)
2-channel emergency stop circuit with cross fault monitoring.
Suited up to SIL3, Performance Level e, Cat. 4
L1
(+)
on
K4
K5
A1(+) S11 S34
S33
LG5928.41
A2(-) S22
S21
N
K4 K5
(-)
S13
Contact reinforcement by external contactors controlled by one contact
path. S33 - S34 must stay open on auto start.
Suited up to SIL3, Performance Level e, Cat 4, if the external contactors
are in the same cabinet and the wiring is short circuit and crossfault prove.
off
Emergency
stop
S12 S32 13 .. ..
.. ..
14
M9976_b
S12 S22 S21 13 .. ..
.. ..
14
M9974_a
Emergency
stop
S12 S32
13 .. ..
.. ..
14
K5
K4
M9973_c
auto-start
S34
L1
(+)
K4
on
K5
S34
S11 S33
LG5928.41
S11 S32
N
(-)
Contact reinforcement by external contactors, 2-channel controlled. The
output contacts can be reinforced by external contactors with forcibly gui-
ded contacts for switching currents > 8 A e.g. 6 A.
Functioning of the external contactors is monitored by looping the NC con-
tacts into the closing circuit (terminals S13-S34 or S33-S34).
Suited up to SIL3, Performance Level e, Cat. 4
L1
(+)
S1
on
A1(+) S11 S33 S34
LG5928.41
A2(-)
S21 S22
N
(-)
acitve NO-contact
(contact position: closed)
2-channel safety gate monitoring.
Suited up to SIL3, Performance Level e, Cat. 4
19
Emergency
stop
S22 S21 13
S12 23 ..
..
14 24
K4
K5
M9975_c
sliding protection grid
closed
S2
S12 S32 13 .. ..
.. ..
14
M9977_b
LG 5928 / 06.06.16 en / 704