NAiS FP1, Hardware Manual

Page: 61 / 280

5. Wiring the FP1 A/D Converter Unit
1) Wiring for Voltage Input
Connect the input device to the analog voltage input
terminal (V). Switch the input range with the voltage
range selection terminal (RANGE), as shown below.
2) Wiring for Current Input
After connecting the analog voltage input terminal (V)
and the analog current input terminal (I), connect the
device. Open the voltage range selection terminal
(RANGE) when current is input.
Notes:
• To prevent the influence of induction and noise in the input signal line, use 2-conductor twisted pair
shielded cable.
• It is recommended that the shield cable be grounded to a frame ground terminal (F.G.). However,
depending on the noise situation, you may get better results by grounding it externally.
• If the voltage range selection terminal (RANGE) shorts, be sure to short it at the terminal block. Also, do
not pull on its lead wire.
• Keep the main circuit wiring away from high voltage lines .
• Make sure that the power is supplied to the Control Unit and the A/D Converter Unit from the same power
supply line.
Analog input range
0 to 5 V
0 to 10 V
Voltage range selection terminal
Between terminals: Not short-circuit
Between terminals: Short-circuit
53
3-3. Wiring
F.G. V
3
I
3
C
3
F.G.
C
0 F.G.
FP1-4A/D
Matsushita
Erectric Works, Ltd.
FP1-318-93H
Power
NAIS
+ –
24V DC CH. 3 RANGE
V
0
I
0
C
1 F.G.
V
1
I
1
C
2 V2
I
2
CH. 2 CH. 1 CH. 0
Power Supply Terminal
Voltage Range
Selection Terminal
Wiring diagram
Shielded wire
Input device
F.G. V
3
I
3
C
3
F.G.
C
0
F.G.
FP1-4A/D
Matsushita
Erectric Works, Ltd.
FP1-319-93H
Power
NAIS
+ –
24V DC CH. 3 RANGE
V
0
I
0
C
1
F.G.
V
1
I
1
C
2
V
2
I
2
CH. 2 CH. 1 CH. 0
Power Supply Terminal
Voltage Range
Selection Terminal
Wiring diagram
Shielded wire
Input device