Hioki DM7275 Series - X84; Internal Circuit Architecture

133
Connections (Instrument and Control Device)
Internal circuit architecture
• Use ISO_COM as the common pin for both input signals and output signals.
• If a large current will ow to common wiring, branch the output signal common wiring and input signal
common wiring near the ISO_COM pin.
NPN setting
8
1
2
10
11
9
27
ISO_5 V
ISO_COM
ISO_COM
ERR
HI
TRIG, IN0
（予約）
2 kΩ
1 kΩ
10 Ω
EXT I/O MODE
selector
NPN
Donotconnectanexternalpower
supplytopin8.
Internal isolated common
(Isolated from the instrument’s protective ground)
Internal isolated
powersupply
Instrument
Programmablecontroller,etc.
Output
Common
Input
Common
(Reserved)
PNP setting
2 kΩ
1 kΩ
10 Ω
EXT I/O MODE
selector
PNP
8
11
9
27
ISO_5 V
ERR
TRIG, IN01
2
10
（予約）
HI
ISO_COM
ISO_COM
Donotconnectanexternalpower
supplytopin8.
Internal isolated common
(Isolated from the instrument’s protective ground)
Internal isolated
powersupply
Instrument Programmablecontroller,etc.
Output
Common
Input
Common
(Reserved)
External Control (EXT I/O)
11
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