6 GPRS-T6 SATEL
circuit should be protected with a proper safety device. The owner or user of the module
should be instructed on how to disconnect the transformer from the mains (e.g. by indicating
the circuit breaker which protects the module supply circuit).
3.4.2 Backup power supply
A 12 V / 7 Ah lead-acid sealed battery should be connected to the module as a backup power
source.
Do not connect deeply discharged battery to the module (with voltage across
unloaded terminals below 11 V). The battery should be precharged with a proper
charger.
The used batteries must not be discarded, but should be disposed of in
accordance with the existing rules for environment protection.
If the battery voltage drops below 11 V for longer than 12 minutes (3 battery tests), the
module will indicate battery failure. When the voltage goes down to approx. 10.5 V, the
battery will be disconnected.
3.4.3 Module power-up / start-up procedure
1. Deenergize the 230 V AC circuit to which the transformer is to be connected.
2. Connect the 230 V AC wires to the terminals of transformer primary winding.
3. Connect the terminals of transformer secondary winding to the AC terminals on module
electronics board.
4. Connect the battery to the dedicated leads (positive terminal to RED lead, negative
terminal to BLACK lead).
The module will not start after connecting the battery alone.
The battery cable ends should not be cut off.
5. Turn on 230 V AC power supply in the circuit to which the transformer is connected. The
module will start operating.
The above mentioned power-up sequence (battery first, 230 V AC mains after) will
permit proper operation of the power supply unit and electronic protection circuits, thus
preventing defects which might be caused by possible installation errors. Should
a situation occur when the power supply has to be entirely disconnected, disconnect
first the AC voltage and then the battery.
6. Connect the computer to the module RS-232 (TTL) port (see: section "Local programming
through RS-232 (TTL) port").
7. Using the GPRS-S
OFT
program, define PIN code for the SIM card (if the card requires
entering the PIN code) to be installed in the module.
8. Turn off the module power supply.
9. Insert the SIM card into the socket (see: Fig. 5).
10.
Turn on the module power supply. Logging the telephone into the GSM network may take
a few minutes.
If the SIM card PIN code is inconsistent with that defined in module settings, the
inconsistency will be indicated by the electronics board LEDs (see: Fig. 3Example F).
The second attempt of using the PIN code will be made after 30 seconds. After
the third attempt to use the invalid PIN code, the SIM card will be blocked. In order to
enter the PUK code and unblock the SIM card, remove it and insert into the mobile
phone.
