Polon-Alfa 4000, Эксплуатационная и техническая документация

Страница: 32 / 129

32 ID-E316-001GB
5.5.8 Reset output (TYPE 6)
The reset output supports only relays and its objective is to generate a reset impulse (duration approx. 4
seconds), after a fire alarm reset. This type may be used, e.g. to power supply or reset of detectors
requiring
a separate power supply source, e.g. flame detectors manufactured by
Det-Tronics.
5.5.9 LK monitoring input
Each of the POLON 4500 control panel four monitoring inputs for may be programmed in the following
variants:
-
to monitor the actuation of external devices after receiving an actuation criterion from a
declared relay output or potential output (for TYPE-1, TYPE-2, TYPE-3 outputs);
-
to monitor the proper operation of external devices;
-
as a technical alarm input.
The input condition is analysed on the basis of the monitoring line characteristic resistance
measurement (Table 5.9). The range of the characteristic resistance (including the connecting cables
resistance) is 2.7 kΩ - 16 kΩ. If the monitoring line resistance is outside the defined range, this condition
is interpreted as an acknowledgement of external devices actuation (variant 1) or external devices fault
(variant 2).
In the control panel, improper conditions are signalled as faults in the following cases:
-
no acknowledgement of external device actuation with an active actuation signal of a declared
relay or potential output;
-
detection of an external device fault.
Table 5.9
Variant Function
PK or LS assigned
output
Mode dependent on detection line characteristic
resistance
1 Actuation
monitoring
Activated Non-maskable fault
2k7< R < 16 k
Technical alarm
R <0,9 k R > 30 k
Non-activated Quiescent mode
2k7< R < 16 k
Technical alarm
R <0,9 k R > 30 k
2 Functioning
inspection
- Quiescent mode
2k7< R < 16 k
Non-maskable fault
R <0,9 k R > 30 k
3 Technical
alarm
- Quiescent mode
2k7< R < 16 k
Technical alarm
R <0,9 k R > 30 k
R – characteristic resistance of detection lines together with connecting cables
Monitoring inputs programming variants
Variant 1:
A monitoring line input may be assigned to one of the previously declared outputs (relay or potential)
defined as TYPE-1, TYPE-2, TYPE-3. Then, this input may be used to monitor external devices actuation
after receiving an actuation criterion from the declared output. Monitoring is enabled approx. 60
seconds after the monitored output is actuated (permissible time of the controlled device actuation
delay). Examples of using a monitoring input assigned to a relay or potential output are shown in Fig. 5.6
and 5.7.
Variant 2: