CAUTION
Do not wire the negative power supply terminal of the modules with independent power supplies (for example, PSM 3.1) to
the ship single-phase ground. If the voltage between the power supply terminals and frame ground exceeds 36 V, then the
power supply terminals and the frame ground terminal will be damaged.
Figure 6.20
Recommended wiring for the power supply
If the EIM power supply fails or is not connected, the PSM will supply power to the EIM.
If the PSM power supply fails, the EIM will run on its independent power supply. However, the EIM will not supply power to the PSM.
INFO
The DEIF equipment does not contain a backup power supply. The power supply source must therefore include the power
backup needed.
INFO
Class societies require an independent power supply for the EIM. The EIM must therefore not be connected to the same
power supply source as the PSM.
INSTALLATION INSTRUCTIONS 4189340909I UK Page 77 of 144