Block Diagram 4-1 To; Internal Block Diagram - Hitachi HIDIC EH-150 Instruction Manual

Resistance thermometer input module(eh-pt4)

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4. Block Diagram

Fig. 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

Fig.4.1 Internal Block Diagram

4. Block Diagram

EH-PT4

External wiring

Shielded

wire

24 V DC+

Internal

Power

Supply

24 V DC−

circuit

4-1

PT100/1000

External grounding

External power

24V DC

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