6.5.7 Programming the Dry Contacts
The Alpha FXM front panel contacts C1 to C5 can be programmed to meet your specifications. Dry contact C6 is
by default factory hard wired to External Vdc. To configure C6 as a programmable dry contact, the unit must be
sent back to the factory.
The functions of dry contacts can be changed with HyperTerminal; For example, to change contact C2:
1. To see how it is currently programmed, type
c2
(all lower case) and press
Enter
.
2. The Alpha FXM responds with
*
c2=2
where the
*
shows the unit responded to your command. For
example: a "
2
" shows it is programmed to be the
Low Battery
indicator as shown in Table K.
Table K — Dry Contact Configuration
1= On Battery 4= Alarm
7= Timer 2
10 = Generator
13= Low Battery
and Line
2= Low
Battery
5= Fault
8= Timer 3
11= Temperature 14= LVD
3= Timer 1
6= Disabled 9 = 48Vdc
(Only available with contact C6)
12= Low Battery,
Shutdown
3. To change the contact, type
c2=X
where X is 1 to 14 and press
Enter
.
The Alpha FXM responds with
*c2=(1 to 14)
.
For example, to change the c2 contact to be the Temperature
indicator, type
c2=11
.
Setting the Timer Contact Interval
If you configure one of the dry contacts to act as a timer, the next step is to set the value of the timer.
Time can be entered in units of 0.5 second; e.g. 120 units of 0.5 seconds = 60 seconds. However, it is more
intuitive to enter time in the hh:mm:ss format, such as 00:01:00 for 1 minute or 60 seconds. Both methods are
shown in the following example.
Table L — Setting the Timer Contact
Enter command
UPS display
Description
D
is
play
ing
th
e
Ti
m
er
timer1
and press
Enter
*timer1=02:00:00
Returns the value of Timer 1
timer2
and press
Enter
*timer2=02:00:00
Returns the value of Timer 2
timer3
and press
Enter
*timer3=02:00:00
Returns the value of Timer 3
Sett
ing
th
e
Ti
m
er
timer1=00:01:00
and press
Enter
*timer1=00:01:00
Sets the value of Timer 1 to 60 seconds.
timer1=120
†
and press
Enter
*timer1=120
timer2=00:01:00
and press
Enter
*timer2=00:01:00
Sets the value of Timer 2 to 60 seconds.
timer2=120
†
and press
Enter
*timer2=120
timer3=00:01:00
and press
Enter
*timer3=00:01:00
Sets the value of Timer 3 to 60 seconds.
timer3=120
†
and press
Enter
*timer3=120
default
and press
Enter
*default
Resets the timer to the factory default of
02:00:00 (2 hours); and resets contacts
C1 to C6 to the factory default settings.
Note: In the above example, the default timer setting of 2 hours is used.
* Indicates that the Alpha FXM has responded to the command you entered.
† Time can be entered in units of 0.5 second; e.g. 120 units of 0.5 seconds = 60 seconds. However, it is more
intuitive to enter time in the hh:mm:ss format, such as 00:01:00 for 1 minute or 60 seconds in the above example.
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