F-12
1/32 DIN Digital Panel Meter
K3GN
■
Block Diagram
■
Input Circuits
Analog Input (DC Voltage/Current)
Use terminal 5 for analog common.
Comparative Output
Contact Output
Transistor Output
Pulse Input/Control Event Input
(HOLD/ZERO)
• Use terminal 2 for the common terminal.
• Use the NPN open collector or the no-voltage contacts for the
control input.
NPN Input
PNP Input
Display
Key
Drive circuit
Drive circuit
Drive circuit
Constant voltage circuit 1
Power supply circuit
Input circuit
Operating power supply
Constant voltage circuit 2
EEPROM
Analog input
terminal
Pulse/
Control
input
terminal
Control input
circuit
A/D
conversion
circuit
Waveform
rectification
circuit
Micro-
computer
Note:
1. Transistor output models only.
2. Linear output models only.
3. Relay output models only.
4. Models with communications functions only.
Communica-
tions driver
Transistor output
(See note 1.)
Contact output
(See note 3.)
Communications terminal
(See note 4.)
X
Linear output
(See note 2.)
Output
circuit
Output
circuit
Drive circuit
Voltage
input
COM
To A/D
−
+
Current
input
COM
To A/D
−
+
6
5
4
5
X
5 V
OUT1
OUT2
9
10
11
12
8.2
Ω
8.2
Ω
8.2
Ω
OUT1
OUT2
PASS
COM
9
10
11
12
8.2
Ω
8.2
Ω
8.2
Ω
OUT1
OUT2
PASS
COM
NPN Output
PNP Output
1
2
3
2.35 k
Ω
4.7 k
Ω
24 VDC
24 V
3
4.7 k
Ω
2.35 k
Ω
2
24 VDC +
24 VDC
−
1
Hold/Zero Pulse