Dual-Channel Protective Door Monitoring - Eaton ESR5-NO-31-24VDC Manual

5 Application examples

5.2 Dual-channel protective door monitoring

33
• Automatic start
• Cross-circuit detection
• Monitoring of external, interlocked opposing contactors
• Suitable up to category 4, PL e (EN ISO 13849-1), SIL 3 (EN IEC 62061)
￫
Cross-faults in the cable routing can be reliably prevented in the
same electrical installation space or with mechanically protected
cable routing.
24 V DC
A1
ESR5-NO-31-24VDC
A2
0 V
Figure 19: Dual-channel protective door monitoring
a B1 – mechanical protective door switches
b K3, K4 - interlocked opposing contactors
ESR5-NO-31-24VDC 11/23 MN049018EN Eaton.com
L
①
B1
B2
S11 S12 S21 S22
(+) ( ) (GND) ( )
(+) ( )
S33 S34
②
K3
K4
N
13 23 31
K3
K4
14 24 32
K3
K4
M