Toshiba nv Series Instruction Manual page 42

Chapter 3 Installation and Wiring
Connect the power supply terminal block of the base unit (BU90A) of DN912
2
Connect 24 VDC, 0 V, and FG (D-class dedicated ground) to the power terminal block of the base unit
(BU90A) of DN912. (The screw size of these wiring terminals is M3.5)
26
6F8C1877
When using in large vibrations occur environment, attach a
cushion rubber cap (ADP901) or a cushioning materials
between the base unit and the DIN rail stopper.
Otherwise, the case may be damaged or scratched.
Figure 3-2 Power supply terminal block of base unit
Do not common connect the 24V DC power supply to the
BU90A with other I/O power supplies.
If shared with other I/O power supplies or else, it may cause
malfunction of failure of each module.
Use the 24VDC power supply to supply the BU90A
according to the 24VDC system power supply requirement
specification (Appendix A.4).
Using an I/O power supply outrange from the specified may cause
the module malfunction or failure.