Hioki Super megohm SM7110 - Electrical Specifications

121
Internal Circuit Conguration
PNP setting
PLC, etc.
Output
Common
Do not connect any external power supply to Pin 8.
The instrument
8
ISO_5 V
1
TRIG
2
C_CHECK
10
ERR
11
C_CHECK_GO
9
ISO_COM
27
ISO_COM
PLC, etc.
Input
Common
2 k
Ω
1 k
Ω
10
Ω
Zener voltage 30 V
Internally isolated common
(This is isolated from the protective ground of the instrument.)
PNP
EXT I/O MODE
selector
Internally isolated
power supply
5 V
30 V max.
Share the ISO_COM for the common terminals of the input and the output signals.
Electrical Specications
Input signal Input type Photo-coupler-isolated, non-voltage contact inputs (supporting
current sink and current source outputs)
Input on Residual voltage 1V or less (Input on current 4 mA [value for
reference])
Input o󰀨 Open-circuit (Breaking current: 100 μA or less)
Output signal Output type Photo-coupler-isolated open drain output (non-polar)
Maximum load voltage 30 V DC
Maximum output current 50 mA/channel
Residual voltage 1V or less (Load current: 50 mA) / 0.5 V or less (Load current:
10 mA)
Internally
Isolated power
supply
Output voltage For sink output: +5.0 V ±10%
For source output: -5.0 V ±10%
Maximum output current 100 mA
External power input None
Isolation Floating from the protective ground potential and the
measurement circuit
Insulation rating Voltage to ground 50 V DC, 30 V rms AC, 42.4 V peak AC or
less
9
External Control (EXT I/O)