20
BH 5928, BI 5928 / 13.12.18 en / 046A
Contact reinforcement by external contactors controlled by one contact
path. S33 - S34 must be opened
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.
2-channel safety gate monitoring
Suited up to SIL3, Performance Level e, Cat. 4
E-stop
13
14
K5
K5
K4
K4
L1
(+)
(-)
M7076_d
N
A2(-)
A1(+) S11
S13
S14
auto start
S34
S33
S31
S32
On
K5
K4
..
..
..
..
S21
Y39
S22
Y40
BH5928, BI5928
S33
S21
Y39
S22
Y40
activated No contact
(contact position: closed)
L1
(+)
M7079_a
N
(-)
Sliding guard closed
A2(-)
A1(+) S11
S34
S12
S32
S1
S2
On
13
14
..
..
..
..
BH5928, BI5928
2-channel emergency stop circuit without cross fault monitoring autostart
and interruption of time by S1
Suited up to SIL3, Performance Level e, Cat. 4
Single channel emergency stop circuit. This circuit does not have any red-
undancy in the emergency-stop control circuit
Suited up to SIL2, Performance Level d, Cat. 3
2-channel emergency stop circuit with cross fault detection
Suited up to SIL3, Performance Level e, Cat. 4
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 > 5 A.
Functioning of the external contactors is monitored by looping the NC
contacts into the closing circuit (terminals S13-S14 or S33-S34)
Suited up to SIL3, Performance Level e, Cat. 4
Off
L1
(+)
M7074_a
N
(-)
E-stop
A2(-)
A1(+) S11
S33
S34
S12
S31
S32
S21
Y39
S22
Y40
BH5928, BI5928
On
13
14
..
..
..
..
S22
L1
(+)
M7075_a
N
(-)
E-stop
A2(-)
A1(+) S11
S13
S14
S31
Y39
S32
Y40
S1
S21
13 .. ..
14
.. ..
BH5928, BI5928
S34
S33
S32
S11
Y39
S12
Y40
S22
L1
(+)
M7078_a
N
(-)
E-
stop
A2(-)
A1(+) S31
S22
S21
On
13 ..
..
14
..
..
BH5928, BI5928
K5
K4
L1
(+)
M7077_b
N
(-)
E-stop
A2(-)
A1(+) S11
On
K5
K4
13
23
14
24
..
..
S34
S33
S31
S32
S21
Y39
S22
Y40
BH5928, BI5928
Application Examples
E. DOLD & SÖHNE KG • D-78114 Furtwangen
e-mail: [email protected] • internet: http://www.dold.com
•
PO Box 1251 • Telephone (+49) 77 23 / 654-0 • Telefax (+49) 77 23 / 654-356