Alpha Technologies Micro Secure UPS - Manual (Page 11)

9
017-220-J0 Rev B
Figure 2 — Output Connectors and Monitoring LEDs
The Alpha Micro Secure has a bar with monitoring LEDs, an RS-232 connector and dry contacts for attachment
of an external monitoring panel.
Dry Contacts
C2
NO NC C
4 6 5
C1
NO NC C
1 3 2
• C1 is the “On Batt” contact,
triggered when the UPS is in
Battery mode and backup battery
power is provided to the load.
• C2 is the “Low Batt” contact,
triggered when the battery voltage
falls below a pre-programmed
setting to indicate the battery is
almost discharged.
• These contacts can be changed
from these factory defaults to
suit your conditions if you have
connected a computer to the unit
Green and Red LEDs
RS-232 Connector
The dry contacts
have a maximum
rating of 1A at 250V.
Microprocessor
UPS
Interior
Normally
Closed (NC) Normally
Open (NO)
Common (C)
Top view
Bottom View