3M DFS 700, Installation And User Manual

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Technical Information DFS 700 / 04.2009
4-6
4.5 Optional equipment
Power Supply Unit Box
The 230 V power supply unit box (Figure 3-3 Item 6) provides the power supply via its two
cables between the mains connection (100 V - 240 V) and the DFS 700 (12 V). The box is
maintenance-free and waterproof and is not to be opened. The vents must always be kept
clear.
In principle the power supply unit box is to be mounted on the back of the DFS 700. See
Section 6.
If required, the power supply unit box may also be installed separately, taking into account the
vertical alignment.
Battery
The 12 V, 17 Ah Battery (Figure 3-3 Item 2) specially for the DFS 700 is a gel-filled lead
Battery. A cable with a suitable plug is mounted on the Battery poles for connection to the
DFS. Battery and cable are a fixed unit.
Using the Battery mains independent operation is possible.
The voltage management system of the DFS 700 cuts the DFS 700 off from the Battery at a
voltage under 10.8 V so as to avoid deep discharge.
If the optional GSM/GRPS-modem is fitted and active, an error message concerning the
imminent low Battery level is sent by SMS to the specified recipient.
The Battery is safely housed and protected from weather in the optional Battery- & Mounting
Box (Figure 3-3 Item 1).
For separate setup without the Battery- & Mounting Box the Battery must be given
special protection from weather and unauthorised access (see Section 2).
Using Batteries from other manufacturers but with the same performance data is
acceptable. However, 3M will not accept liability for the correct operation of the DFS
700. In any case only the 3M Battery Charger may be used to charge the Batteries
through the DFS 700.
Two identical Batteries can be used to operate the DFS 700; both of them are to be connected
to the speed display unit. The DFS 700 voltage management system will regulate the power
supply from the two batteries and make sure that both are used equally.
NOTE