Input Dry Contacts - Delta Ultron Series User Manual

No.
19 Battery Breaker Shunt Trip
20 Backfeed Protection
21 General Alarm
4.1.6

Input Dry Contacts

There are four sets of programmable input dry contacts. The input dry contacts allow the
UPS to receive external signals from peripheral devices and let the UPS response
accordingly. Please use the touch panel to set each dry contact as normally open (NO) or
normally closed (NC). Each input dry contact can be assigned a specific event. Four out of
ten events can be assigned according to your applications. Please refer to the table below
and 7.6.6 Dry Contact Setting.
For connection to the input dry contacts, the signal cable routing is the same as the REPO
dry contacts' signal cable routing.
Ultron DPS Series
Event Description
When the EPO button is pressed, the UPS will
send a signal to the connected external shunt trip
device to cut off the battery power.
When the UPS's bypass SCR has a short-circuit
issue, the UPS will send a signal to the
connected external shunt trip device to cut off the
backfeed voltage.
When any UPS alarm occurs, the UPS will send
a signal.
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