Operator`s manual
10
ATS C8
When the UPS is in Inverter mode, the normally open relay closes (Figure 1.3.6), sending
48VDC or 24VDC from the batteries to this dry contact (See Section 2.3).
Note: This contact can be used to power any external logic circuits or loads when the UPS
is in Inverter mode.
Figure 1.3.6 – ATS Contact
Microprocessor
+
48VDC or 24VDC
from the batteries
11
C6
The factory default layout for this contact is a relay that is energized when the UPS is in
Line or Inverter modes (Figure 1.3.7). It provides 48VDC (500mA) or 24VDC (500mA) from
the external batteries to an external fan or other equipment. It can be factory-congured as
a dry contact if requested.
Figure 1.3.7 – Dry Contact C6 Layout
(Default Conguration, De-energized Shown)
+48VDC, 500mA or
+24VDC, 500mA
from the batteries.
Microprocessor
18
16 17
+
Contact
C6
12
Status and Alarm LEDs
Status: When this green LED is on, the UPS is in Line mode and line power is
provided to the load. When it is ashing, it is in Inverter mode and backup battery
power is provided to the load (See Figure 3.1.2, “UPS Operating Modes”).
Alarm: When this red LED is on, the UPS has a fault. When it is ashing, it has an
alarm (See Section 3.6, “Troubleshooting”).
13
Input Circuit Breaker
This circuit breaker is an on/off switch for line power into the UPS and provides input
protection. It must be on for proper UPS operation.
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Novus Micro Operator’s Manual
Doc# 017-221-B0 Rev 0307