Block Diagram; Internal Block Diagram - Hitachi HIDIC EH-150 EH-PT4 Applications Manual

4. Block Diagram

4.1 Internal Block Diagram

Figure 4.1 shows the internal block diagram.
Line-
arize
Timing
control
Note: V/F conversion refers to the conversion of voltage(V) to frequency(F).
V/F
conversion
Counter
(Note)
Constant
current
circuit
Each
part
Figure 4.1 Internal Block Diagram
EH-PT4
External wiring
A0
b0
B0
A3
b3
B3
Shielded
wire
24 V DC+
Internal
Power
Supply
24 V DC−
circuit
4-1
4. Block Diagram
RTD
RTD
External grounding
External power
24V DC