Gamatronic Electronic Industries Ltd.
CENTRIC User Guide, Release 0.3
47
6.1.9
Setup > DRY CONTACTS (optional feature)
This function enables the user to manage the
Centric
's input and output dry contacts.
Figure 39: "Setup > Dry Contacts" option
6.1.9.1
Setup > Dry contacts > INPUT DRY CONTACTS
The input dry contacts enable the user to monitor the state (open or closed) of a relay external to
the UPS, by generating an alarm condition when the state of the external relay changes. (The
relay must be voltage free.
Connection of a voltage-bearing circuit or relay to the input dry
contacts may damage the Centric
.)
For example, if the battery circuit breaker has trip-indicating auxiliary contacts which close when
the circuit breaker closes and open when the circuit breaker opens, these auxiliary contacts on
the battery circuit breaker can be connected to one of the pairs of input dry contacts on the UPS,
and that pair of input dry contacts can then be programmed to generate an alarm condition when
the battery circuit breaker is opened.
6.1.9.1.1
Location of the input dry contacts
The connections for the input dry contacts are located in two locations on the upper rear panel of
the UPS. See items 1 and 2 in Figure
59
, and also Figure 60, Figure 61, and Figure 62.
The connections for four of the input dry contacts (AUX1, AUX2, AUX3, AUX4) are located in
connector group 1 (see Figure
59
and Table 7).
The connection for the fifth input dry contact (AUX5) consists of two pins on the D9 alarm terminal
in connector group 2 (see Figure
59
and Table 7).
