User's Manual

2. Setup
NZ2WL - xxx
9
Grounding the NZ2WL
Connect the cables to the applicable connectors. Process the cables as needed and ground the product.
Figure 2.5. Grounding the NZ2WL
- The negative electrode (Vi-) terminal and the FG terminal of this product's power supply terminal
are connected to the metal casing. Negative grounding is performed when the FG terminal is
grounded or when the device to which the metal casing is attached is grounded, so use this product
with negative grounding as shown in the wiring example in Figure 2.6. Performing positive
grounding may short circuit the power supply, which may cause malfunction, heat generation,
faults, or damage..
- As shown in Figure 2.7, never connect the negative electrode (Vi-) terminal of this product to the
negative electrode of a periphery device whose periphery power supply has been positive grounded.
Doing so may cause malfunction, heat generation, faults, or damage.
CAUTION
Power
Supply
Supply
Periphery
Power
device
Periphery
device
Periphery
Periphery
Power
GND(FG) GND(FG) GND(FG)
GND(FG)
Positive Positive
GND GND
Product
Product
Metal
Metal
Case
Case
To wiring for power
The (+) and (-) of the
periphery power supply
are short circuited by
way of FG.
＋ (positive electrode)
＋
＋
＋
＋
＋
- (negative electrode)
- -
-
-
-
distribution
To wiring for power
distribution
Note that you can not connect this
product’s (-) to the (-) of a
periphery power supply that has
been positive GND.
This product is (-) grounded
b
y the wiring shown here.
Figure 2.6. Example in power supply wiring
Figure 2.7. Example in which the periphery
power supply is short circuited
Supply
Supply
Power
12-24VDC
12-24VDC