Application Examples - DOLD SAFEMASTER LG 7928 Mode D'emploi

Application Examples

L1(+)
A1(+) S11 S12 S21
LG5925
A2
N(-)
LG 5925 with LG 7928, cross fault detection, suitable up to SIL 2, Performance Level d, Cat. 3
L1(+)
A1(+) S11 S12 S21
LG5925
A2
N(-)
LG 5925 with LG 7928, non cross fault detection, suitable up to SIL 2, Performance Level d, Cat. 3
L1(+)
Emergency
stop
A1(+) S11 S12 S21 S22
LG5925
A2
N(-)
LG 5925 with two LG 7928, non cross fault detection, suitable up to SIL 2, Performance Level d, Cat. 3
E. Dold & Söhne GmbH & Co. KG • D-78120 Furtwangen
dold-relays@dold.com • www.dold.com
...
S22 S33 S 4 3 13 23
...
K1
...
K2
...
4 1 4 2
S22 S33 S34 13 23 ...
...
K1
...
K2
...
14 24
...
S33 S34 13 23 A1(+)
...
K1
cross fault detection
not cross fault detection
...
K2
...
14 24
A1(+) S 1 1 S21
LG7928
K1t
Cross fault detection
Not cross fault detection
K2t
2 A 1 Y Y2
A1(+) S11 S21
LG7928
K1t
Cross fault detection
Not cross fault detection
K2t
A2 Y1 Y2
S11 S21 17 27 37 45
LG7928
K1t
K2t
A2 Y1 Y2 18 28 38 46
•
Bregstraße 18 • Phone +49 7723 654-0 • Fax +49 7723 654356
16
17 27 37 45 55
18 28 38 46 6 5
M10224_b
17 27 37 45 55
18 28 38 46 56
M10225_b
55 A1(+) S11 S21
LG7928
K1t
cross fault detection
not cross fault detection
K2t
56 A2 Y1 Y2
17 27 37 45 55
18 28 38 46 56
M11304
LG 7928 / 29.04.21 en / 390A