External Switch/ Breaker Status Dry Contacts - Delta Modulon DPH series User Manual

4.1.4 External Switch/ Breaker Status Dry Contacts

There are four sets of external switch/ breaker status dry contacts (S1, S2, S3 and S4),
which can be used to respectively detect the status of input, bypass, output and manual
bypass switches or breakers. You can only connect the dry contacts to normally open (NO)
devices.
Modulon DPH Series
Type
Dry Contact_ S1
Dry Contact_ S2
Dry Contact_ S3
Dry Contact_ S4
(Figure 4-8: External Switch/ Breaker Status Dry Contacts Design)
Normally closed (NC) device
Normally closed (NC) device
Normally closed (NC) device
Normally closed (NO) device
EXT.SWITCH
STATUS
S1 S2
S3 S4
5V
9
11
Buffer
5V
13
15
Buffer
5V
10
12
Buffer
5V
14
16
Buffer
UPS
4-6
Connection
S1
2mA. Max
S2
2mA. Max
S3
2mA. Max
S4
2mA. Max