Operating Manual

Operation and service software
Version 1.1 Page 77 of 92
5.1.2 Charging status indicator
The charging status indication is given using the communication line via the inverter.
5.2 Connection of the notebook for servicing
5.2.1 USB port
Each rechargeable battery set has a USB port.
The installer can use this port to execute the following steps:
• Update (firmware)
• Read error memory
Proceed as follows to read the battery storage system via the USB port:
Step Description
1
Open the screws on the service flat using a PH2 screwdriver.
Loosen and remove the upper fillister-head screw of the lateral service flap.
Figure 5-2: side view of BMZ ESS, service flap
2
Now push the flap of the side panel upwards to remove it.
3
Switch off the battery system.
Figure 5-3: push button with LEDs
Both LEDs must not light up.
4
Pull out the NH fuses of the NH isolator and remove the safety bracket and fuses from the isolator.