GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 6 of 15
[6]
2.2 Power supply connection
The power supply cable must be a 3−core double insulated wire that meets the voltage and current requirements
of the panel. The ground terminal (marked with on the power management board)
must be
connected to the
installation’s ground (protective earth) to ensure proper and safe operation of the system.
Figure 3 - Power supply wiring and fuse
The interior of the control panel has space suitable for two 12V lead-acid batteries (Pb) with nominal capacity
of 7Ah, 9Ah, 12Ah or 15Ah. Both batteries must be the same model, type and have the same nominal capacity.
The two batteries must be connected in series. Three cables are provided to connect them, two of them are
pre-
installed on the board’s battery terminals. The red wire must be connected to the positive terminal (+) of the
first battery. The black wire must be connected to the negative terminal (-) of the second battery. A jumper cable
is included in the accessories bag, to connect the two other terminals (negative terminal (-) of the first battery
to the positive terminal (+) of the second battery), as it is shown in the figure below:
Figure 4 - Battery wiring