16 Installation
Telephone communicator
When supervision is enabled, the occurrence of open and short-circuit conditions
will generate an “Interconnection fault”.
CONTACT
REFERENCE
Each "IOx" terminal has an internal resistor, a "pull-up" resistor, which allows to
change the contact reference (to ground or positive) according to the
programming.
Therefore, there are 4 ways of connecting a contact to an IOx input:
• normally-closed contact referred to ground (negative removed)
• normally-open contact referred to ground (negative applied)
• normally-closed contact referred to positive (positive removed)
• normally-open contact referred to positive (positive applied)
It is possible to associate one of the functions in the following table to each input:
3K9Ohm
orange,
white, red
100Ohm
brown,
black, brown
Terminal IOx
supervised
Terminal IOx
non supervised
Table 5: IOx functioning as input
function input activated note
Stop alarm communications
If the input is activated, the specified
communication types will be cancelled
from the call queue and any ongoing calls
will be terminated.
One or more communication types can
be selected.
Default for terminal “IO2”.
Stop fault communications
Stop other types of communications
(generic or supervision)
Disable alarm communications
If the input is activated, the specified
communication types will be disabled.
One or more communication types can
be selected.
Default for terminal “IO3”.
Disable fault communications
Disable other communication types
(generic or monitoring)
Force call to cellular channel
If the input is activated, it will force the
communicator to use the mobile network
for voice and Contact ID calls.
Forcing will have no effect if at the
same moment another input
configured as “Force calls to PSTN” is
active.
Force calls to PSTN
If the input is activated, it will force the
communicator to use the PSTN line for
voice and Contact ID calls.
Forcing will have no effect if at the
same moment another input
configured as “Force calls to cellular
channel” is active.
Rearm
Activation of the input:
- terminates ongoing communications
and cancels any communications in
the call queue
- switches off the “ACK” LED and
yellow blinking on the “Power” LED
(that indicates “System restart”)
- terminates audible alarm and fault
signalling (on buzzer), the signalling
will restart when a new alarm or
fault signal event occurs
- deactivates the “ALARM ACK” output
- deactivates the programmable
outputs (“OUT1”, “IOx”)
The monostable outputs will
deactivate unconditionally.
For Bistable outputs, the non-
restorable events will be considered
“zeroed” (refer to Appendix A),
however, in order to allow the output
to be deactivated, it is necessary for
all the associated events to restore.
Default for terminal “IO1”.
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