Oldham MX 43, Руководство пользователя, Страница: 35 / 67

6 – Electrical Connections 35
Sector Power Supply
The MX43 can be powered from a 110-240 V AC source at 50/60 Hz, 1.5 A
max.
Check the nature of the current and the network voltage prior to any
connection. The electrical connections must be carried out with the equipment
disconnected.
The MX43 must be protected upstream by a differential bipolar circuit breaker
with a type D response curve, size 4A. This cicuit breaker must be included in
the electrical installation of the building, in the immediate proximity of the
MX43, and be easily accessible to operators. It shall be marked as the cut-off
device of the MX43.
The sector power shall be connected to the terminal block as indicated in
Figure 26. The ground conductor shall be connected to the ground terminal
(B).
058
Figure 26: Connection of sector power in wall mounted and rack versions.
External 24V DC Power Supply
The MX43 can be powered from a 22 to 28 V AC source at 50/3.2 A, 1.5 A
max. In this case, connect the 24VDC source to the corresponding terminal
jack (Figure 26, A) respecting polarities. This jack is protected by Fuse F1.
060
Figure 27: Connection of 24VDC external power supply (A).
The main power supply charges the internal pack. The external 110-240 VAC,
24 VDC and battery pack sources can be used simultaneously, as there is
internal protection installed.
Integrated Backup Power Supply
The MX43 can be equipped with a 24-VDC NiMh battery pack that maintains
power to the central unit in the absence of the sector current or external
24VDC. The batteries are charged by the mains supply (110-240 VAC).
The battery pack requires continuous charging for 7 days before reaching its
maximum capacity. Its autonomy depends on the MX43 configuration.
If the battery pack is not installed at delivery, proceed as follows:
1. Position and fix the battery pack (A) at the place indicated using the 4
screws supplied.