Potential Free Contacts - Emerson 110V User Manual

Chapter 1 - General Description

1.6 Potential free contacts

The Network Power Switch status can be checked with the 37-pin D-type connector, located on the rear end. This is a
potential free contact, and gives following indications as shown in Table 1-1 –
Table 1-1
Status Status
NC NC
Overload Overload 20 20
Priority Priority 23 23
S1 Feed S1 Feed 7 7
S1 Healthy S1 Healthy 28 28
S2 Healthy S2 Healthy 12 12
S2 Feed S2 Feed 33 33
Unsynch Unsynch 17 17
The pin details for this connector is shown in fig 1.6
Two potential free contacts indicating Source 1 and Source 2 Healthy conditions are taken from this 37 pin D type
connector and terminated at rear terminal connectors, as shown in figure 1.7.
19 18 17
37 36 35
52
FREE CONTACTS
Page 1-6
N e t w o
N e t w
Termination available of 37 pin D-type connector Termination available of 37 pin D-type connector
NO NO Common Common
1 1
4 4
25 25
9 9
30 30
14 14
35 35
16 15 14 13 12 11 10 9 8
34 33 32 31 30 29 28 27 26
50 51
Fig 1.6 – Pin details for 37 pin D-type Connector
52 50 51
POTENTIAL
Fig 1.7 – Potential free contacts Connectors
r k P o w e r S w i t c h
o r k P o w e r S w i t c h
NC NC
2 2 3 3
5 5 6 6
26 26 27 27
10 10 11 11
31 31 32 32
15 15 16 16
36 36 37 37
7 6 5 4 3 2 1
25 24 23 22 21 20
Input Fuse 2
Input Fuse 1
Rear View
User Manual
NO NO Common Common
21 21 19 19
24 24 19 19
8 8 19 19
29 29 19 19
13 13 19 19
34 34 19 19
18 18 19 19
Pin Details
50 – S2 Healthy
51 – S1 Healthy
52 - Common