Delta Modulon DPH series - External Switch; Breaker Status Dry Contacts

4-6
Modulon DPH Series
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 detect the status of input, bypass, manual bypass and output switches or
breakers. Please follow the table below to connect the dry contacts to normally open (NO) or
normally closed (NC) devices.
Type Connection
Dry Contact_ S1 Normally closed (NC) device
Dry Contact_ S2 Normally closed (NC) device
Dry Contact_ S3 Normally closed (NC) device
Dry Contact_ S4 Normally open (NO) device
5V
14
16
S4
Buffer
5V
10
12
S3
Buffer
5V
13
15
S2
Buffer
5V
9
11
S1
Buffer
UPS
EXT.SWITCH
STATUS
S1 S2
S3
S4
2mA. Max
2mA. Max
2mA. Max
2mA. Max
(Figure 4-8: External Switch/ Breaker Status Dry Contacts Design)