7.2 Circuit Configuration and Connections of the EXT I/O Connector
125
9
7
Circuit Configuration
All input and output signal lines other than the power signal line are isolated by a
photocoupler.
When using the EXT I/O, connect a 5-24 V DC power in EXT DCV-EXT COM.
When power cannot be supplied from an external device, connect INT DCV and
EXT DCV, and INT COM and EXT COM.
7.2 Circuit Configuration and Connections
of the EXT I/O Connector
• The range of power voltages that can be connected to the external DC
power supply EXT DCV and EXT COM terminals is 5 to 24 V DC. Do not
apply a voltage that e24 V DC. Doing so may damage the device.
Connect a device with an output capacitance of at least 200 mA in order to
drive the circuit.
• Signal lines are insulated to stop interference between signals. Be sure to
use protective grounding for the connected device. Otherwise the insulation
may be damaged.
• +5 V DC is output between the internal DC power supply INT DVC and INT
COM. The maximum current capacity is 100 mA. Do not connect a circuit
that consumes 100 mA or more to an external device.
• INT COM is connected to the case.
• The maximum low level output current of the output signal is 30 mA. When a
current of more than 30 mA is required, connect, for example, a transistor
circuit, which is capable of current amplification and run on an external
power source, to the external device.
Current-limiting resistor
3.3 k
(1/4 W)
Pull-up resistor
3.3 k
(1/4 W)
The ground is connected to the
case
Internal DC power supply (5 V)*
INT DCV
External DC power supply (5 to 24 V)*
EXT DCV
BIN1, C-HI
BIN2, C-IN
EOM
TRIG
LD0 to LD6
External DC power supply (COM)*
EXT COM
Internal DC power supply (COM)*
INT COM
* A connection is possible when using an internal DC power supply voltage
of 5 V.
Summary of Contents for 3504-40 C HiTester
Page 2: ......
Page 22: ...1 4 Names and Functions of Parts 16 ...
Page 28: ...2 5 Turning the Power On and Off 22 ...
Page 40: ...3 3 Setting the Measurement Conditions 34 OF UF Evaluation Flow Chart ...
Page 66: ...4 4 Self Calibration 60 ...
Page 96: ...5 2 BIN Measurement Function Model 3504 50 3504 60 only 90 ...
Page 136: ...7 4 About Measurement Times 130 ...
Page 286: ...Appendix 7 Initial Settings Table A14 ...
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