Block Diagram - Eaton ESR5-NO-31-24VDC Manual

1.12 Block diagram

A1 S11 S12 S33 S34
U Logic
K1
IN 1/2
Logic
K2
Power
24V DC
A2 S21 S22
Figure 3: Block diagram
Isolation co-ordination
Enclosure A1/A2, Logic 13/14
material
Enclosure - 4 kV BI
material
A1/A2, Logic - -
13/14 - -
23/24 - -
33/34
41/42 - -
Legend: BI - basic insulation, ST - safe isolation
￫
Basic insulation
(rated surge voltage 4 kV)
Mixing low voltage and SELV is not permissible. Connect
250 VAC to one of the enable contacts only if the neighboring
contact/enable current path is also carrying the same potential.
Safe isolation / reinforced insulation
(rated surge voltage 6 kV)
The reinforced insulation is designed one overvoltage category
higher than the basic insulation (e.g., with greater clearances
and creepage distances for the conductors). Accordingly, mixing
SELV circuits with V
higher voltage is possible.
ESR5-NO-31-24VDC 11/23 MN049018EN Eaton.com
13 23 33 41
Designation
A1
A2
S11/S12
S21/S22
14 24 34 42
S33/S34
13/14
23/24
33/34
41/42
23/24
4 kV BI 4 kV BI
6 kV ST 6 kV ST
- 4 kV BI
- -
- -
≤
25 VAC or V
1 Description ESR5-NO-31-24VDC
Explanation
Power supply 24 VDC
Power supply 0 V
Input sensor circuit (channel 1)
Input sensor circuit (channel 2)
Start circuit automatic
Enable current paths, non-delayed 1
Enable current paths, non-delayed 2
Enable current paths, non-delayed 3
Signal current path, non-delayed
33/34 41/42
4 kV BI 4 kV BI
6 kV ST 6 kV ST
4 kV BI 6 kV ST
4 kV BI 6 kV ST
4 kV BI
-
≤
60 VDC and circuits with a
12