Hioki 8730-10 - Input Terminals

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8.4 Input Terminals
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
NOTE
Shorting an input terminal with EXT_COM (A3) has the same effect as a low-
level signal input. Opening an input terminal from EXT_COM (A3) has the same
effect as a high-level signal input.
When using a relay or switch, provide a chattering prevention circuit to prevent
errors.
5kΩ
本体
＋５Ｖ
5kΩ
HC14
絶縁ＧＮＤ
絶縁５Ｖ
1kΩ
ISO_DCV
EXT_DCV
入力端子
EXT_COM
ISO_GND
本体
ＧＮＤ
A2
A1
A3
A4
A5～A16
A2
A1
A4
A3
"Ｌ"：0〜1.0[V]
"Ｈ"：V
EXT
‑1.0〜V
EXT
[V]
外部電源時は、EXT_DCV（A2）と
EXT_COM（A3）間に電源を接続
内部電源時はショート
内部電源時はショート
8730-10, 8713-10
+5V
8730-10, 8713-10
GND
HC14
5kΩ
5kΩ
1kΩ
A 5 to A16
Input Terminal
When using the internal
power supply, the
terminals must be
shorted
When using the internal
power supply, the
terminals must be
shorted
Isolated GND
EXT
_
COM
"L" : 0 to 1.0 [V]
"H" : V
EXT
-1.0 to V
EXT
[V]
When using an external power
supply, the power supply is
connected between EXT_DCV
(A2) and EXT_COM (A3)
Isolated 5 V
ISO
_
GND
EXT
_
DCV
ISO
_
DCV
8.4 Input Terminals
You can start (START) and stop (STOP) measurement and select
comparison conditions (MODE) using external control terminals.
You can also input external sampling (EXT_SAMP) and external trigger
(EXT_TRIG) signals or hold comparison results (HOLD) and stop the
output of comparison results (JUDGE_OFF).
Specifications for external control input terminals
HIGH level voltage: When using an external power supply V
EXT
Max.: V
EXT
, Min.: V
EXT
-1.0 [V]
When using an internal power supply
Max.: 5.0 [V], Min.: 4.0 [V]
LOW level voltage : When using an external power supply V
EXT
Max.: 1.0 [V], Min.: 0 [V]
When using an internal power supply
Max.: 1.0 [V], Min : 0 [V]
Maximum input voltage : 30 V DC
Maximum rated voltage to earth: 30 V rms or 60 V DC.
Circuit for external control input terminals
When using an external power supply, do not short-circuit A1 and A2, or A3
and A4.