Check The Gprs Communication - Grundfos AQtap Installation And Operating Instructions Manual

4.8.7 External battery
DANGER
ELECTRIC SHOCK
Switch off the power supply, both grid and solar,
before making any connections.
The AQtap cabinet must only be opened by
authorised and qualified staff.
All electrical connections must be carried out by a
qualified electrician in accordance with local
regulations.
Stripped parts of wires must not protrude from
terminals.
An external battery replaces the internal battery.
Use a 12 V rechargeable lead acid battery.
The cables of the internal battery must be
Caution
disconnected both in the power supply unit and at the
battery, and they must be removed from the AQtap to
avoid unintended connection between parts.
Caution
Do not short-circuit the two poles of the batteries.
Ensure correct polarity!
Caution
When connecting an external battery, it must be fully
Note
charged prior to connection.
Disconnecting the internal battery
1. Open the power supply unit, see section
power supply unit.
2. Disconnect the blue cable from the minus (-) pole of the
battery.
3. Disconnect the red cable from the plus (+) pole of the battery.
4. Disconnect the cables from the terminals.
5. Pull the battery cables out of the gable gland.
6. Remove the cables from the AQtap.
Connecting the external battery
1. Pull the disconnected battery cables through one of the
smaller (M16) cable glands of the AQtap cabinet.
2. Lead the cables aside the internal battery without tension and
then through one of the smaller (M16) cable glands of the
power supply unit.
3. Strip the wires to a length of 7 mm.
4. Connect the wires to the battery plug according to the imprint
on the power board and tighten the screws.
5. Tighten the cable gland at the power supply unit and at the
cabinet.
6. Refit the front cover of the power supply unit and tighten the
screws in the cover with 0.8 Nm.
7. Connect the red battery cable to the plus (+) pole (right side of
the battery).
8. Connect the blue battery cable to the minus (-) pole (left side
of the battery).

4.9 Check the GPRS communication

The SIM card will not be read by the AQtap until it
was powered off and on again.
Caution If the SIM card was replaced by a new one, the
AQtap must be restarted, see section
the AQtap.
14
As soon as the AQtap with a correctly placed SIM card is
powered on, it tries to connect to the GSM network automatically.
Two LEDs near the SIM card show the connection status.
• Check that the internal communication is ok:
– The lower LED is permanently green or red.
• Check that the connection to GSM network is established:
– First, the upper LED flashes yellow rapidly (1-second
If the AQtap is registered in WMS and data transfer is ongoing,
the upper LED indicates the connection between AQtap and
WMS.
• Check that the communication status is ok, see section
4.9.1 LEDs on AQtap
4.9.1 LEDs on AQtap CIM
LEDs indicate the internal and external communication status:
4.8.3 Opening the
Fig. 2
GSM LED of the CIM (top)
LED status
Yellow LED, flashing
with 1-second
intervals
Yellow LED, flashing
with 3-second
intervals
Green LED, flashing
with 3-second
intervals
Green LED,
permanently on
AQtap internal communication LED (bottom)
LED status
Red LED,
permanently on
Red LED, flashing
with 1-second
intervals
Green LED,
11.2 Restarting permanently on
intervals). Once a network has been acquired, the upper
LED flashes yellow slowly (3-second intervals). It can take
several minutes to establish the connection.
CIM.
LEDs on AQtap CIM
Description
• No or invalid SIM card in the AQtap.
• SIM card is PIN protected.
• No GSM or no GSM coverage.
• Connection to GSM network
established.
• Normal operation.
• GPRS connection to WMS
established. Ongoing data transfer
with WMS.
• Ongoing SMS transfer with WMS.
This is typically observed during
initial configuration / commissioning
with WMS.
Description
• AQtap has not received initial set-up
data due to internal fault.
• AQtap has not established a
connection to WMS.
• Cable or connector problem on the
AQtap internal communication.
• AQtap internal communication status
OK.
SIM card
GSM LED of the
CIM
AQtap internal
communication
LED