Setup > Dry Contacts > Output Dry Contacts; Figure 40: Defining An Input Dry Contact - Gamatronic Centric 50 kVA User Manual

6.1.9.1.2 Using the input dry contacts
The connection for each input dry contact consists of two pins – one independent pin (AUX1,
AUX2, AUX3, AUX4, or AUX5), and the second pin, labeled COM (or COMMON).
Input dry contact AUX5 makes use of an opto-coupler. No more than 30 V and 100 mA should
be applied to input dry contact AUX5. Exceeding either of these limits may cause serious
damage to the system controller.
In the "Setup > Dry contacts > Input dry contacts screen the user defines the dry contact as
normally open or normally closed, depending on the normal state of the external circuit. The user
must also ensure that the input dry contact is enabled, by selecting the "Enabled" box for that dry
contact in the same screen (see Figure 40).
An alarm has been pre-assigned to each of the input dry contacts. (You can see these alarms in
the "Setup > Alarms" function. They are named "Auxiliary #1 fault" through "Auxiliary #5 fault".
These names can be modified by the user.) Provided that the input dry contact is enabled, when
it changes from its defined normal state the associated alarm condition is generated. Depending
on the severity level associated with the alarm (in the "Setup > Alarms" function), the alarm
generates an entry in the system log and may light up the alarm LED and sound the audible
alarm.
6.1.9.2 Setup > Dry contacts > OUTPUT DRY CONTACTS
•
There are six output dry contacts
•
There are currently 48 alarm conditions to which the output dry contacts can be linked, so that
when the alarm condition occurs, the state of the output dry contact will change.
•
Any number of output dry contacts can be linked to a single alarm condition.
•
Each output dry contact can be linked to any number of alarm conditions.
The output dry contacts are numbered 1 through 6.
48
Gamatronic Electronic Industries Ltd.

Figure 40: Defining an input dry contact

CENTRIC User Guide, Release 0.3