Deif PPM 300 - Page 97

CAUTION
Do not wire the negative power supply terminal of the modules with independent power supplies (for example, PSM 3.1) to
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 6.41
Recommended wiring for the power supply
12/24 V
F1
+
-
+
-
Figure 6.42 Incorrect wiring of the power supply
12/24 V
F1
+
-
+
-
Backup power supply
The DEIF equipment does not contain a backup power supply. The power supply source must therefore include the power backup
needed.
INSTALLATION INSTRUCTIONS 4189340909I UK Page 97 of 144