
SIGNAL-20P
DESIGN AND OPERATING PRINCIPLES
33
4.4 Device operation modes
The device is designed to operate in following available modes:
−
Technical readiness mode
−
Operating mode
−
“Power Failed” mode
−
Diagnostic mode
−
“Device Failed” mode
The device “Ready” indicator statuses corresponding to various de-
vice operation modes are shown by the Table 8.
4.4.1 Technical readiness mode
The device enters the technical readiness mode when voltage has
just supplied to the device power terminals. The duration of this mode is
not to exceed 3 seconds provided at least one device input is supplied by
no less than 11V.
4.4.2 Operating
mode
After technical readiness mode having been finished the device en-
ters the operating mode, that is, monitors and analyses the alarm loop
statuses, controls the relays, transmits messages and receives commands
from the net controller.
The operating mode is accompanied by lit “Ready” indicator.
4.4.3 “Power Failed” mode
The device enters the “Power Failed” mode if one or both (see sec-
tion 4.3.1) input voltages have fallen below 10 V. In such a mode the de-
vice performs its operations and besides produces the “Ready” indicator
signal and generates the “Power failed” message.
Both input supply voltages having fallen below 9 V, the device cuts
off. The input supply voltages (any or both – see section 4.3.1) having ex-
ceeded 11 V, the device automatically transits from “Power Failed” mode to
the operating mode generating the “Power Restore” message.
4.4.4 Diagnostic
mode
The device transits from the operating mode to the diagnostic mode if
the tamper code pattern has been pressed. Refer to the section 6.1.2 for
more detailed discussions.
4.4.5 “Device Failed” mode
The device enters the “Device Failed” mode if the microcontroller
memory test has failed. The microcontroller memory test is carried out
each time the device power has been up. In such a mode the device
Содержание SIGNAL-20P
Страница 1: ...SIGNAL 20P Intrusion Fire Alarm Addressable 20 Loop Control Device Installer s and User s manual ...
Страница 52: ...INTRUSION FIRE ALARM ADDRESSABLE 20 LOOP CONTROL DEVICE 52 Appendix C SIGNAL 20P connection diagram ...
Страница 53: ...APPENDIX D SIGNAL 20P TESTING CONNECTION DIAGRAM 53 Appendix D SIGNAL 20P testing connection diagram ...