GSM модем iRZ TC65 Lite
User Manual
19
3. Emergency Situations
To simplify the use of the modem, tracking of emergencies is provided.
3.1. Emergency 1 (input power supply invalid)
Emergency 1 arises upon deviation of the input voltage from the allowed value. In such case the
modem stops the operation: disconnects the GSM module power supply. It signals with the red LED
about the emergency situation (turned on continuously). Escaping from the emergency situation is
possible only after restoring of the input voltage.
3.2. Emergency 2 (module power supply invalid)
Emergency 2 arises in the event of deviation of the power supply voltage of the GSM module
from the allowed value. In such case the modem stops the operation: disconnects the GSM module
power supply. It signals with the red LED about the emergency situation (0.5 s on / 0.5 s off).
Escaping from the emergency situation is possible only after restoring of the power supply voltage
of the module within 10 seconds from the time when the emergency situation occurred. If the power
supply voltage of the module stays incorrect within 10 seconds (with correct input voltage), the
modem jumps to the standby mode – the module power supply is disconnected, the emergency
indication persists. Escaping from the standby mode is possible only after full disconnection of
power supply.
In case of any repeated emergency after restarting of the modem, the modem is to be repaired.
3.3. Emergency 3 (GSM module not started)
Emergency 3 occurs in the event where the GSM module is not started. Red LED signaling
about the emergency situation: 0.25 s on / 0.25 s off / 0.25 s on / 1 s off. Escaping from the
emergency situation is possible only after successful start of the GSM module. In case of 10
consecutive failed attempts to start the module (15 seconds), the modem jumps to the standby mode
– the module power supply is disconnected, the emergency indication persists. Escaping from the
standby mode is possible only with full disconnection of the power supply.
In case of any repeated emergency after restarting of the modem, the modem is to be repaired.
3.4. Emergency 4 (COM port not available)
Emergency 4 arises upon the unavailability of the COM port of the GSM module. Red LED
signaling on the occurrence of an accident: 0.25 s on / 0.25 s off / 0.25 s on / 0.25 s off / 0.25 s on / 1
s off. Escaping from the emergency situation is upon the availability of the COM port of the GSM
module. In the event of 10 consecutive failed attempts (20 seconds), the modem jumps to the
standby mode – the module power supply is disconnected, emergency indication persists.
In case of any repeated emergency after restarting of the modem, the modem is to be repaired.
