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7
4. Power Terminal
When connected to the AD-4212C / AD-4212D, power can be supplied from the weighing instrument (RS-232C
connector). No power connecting is required (Refer to “6. RS-232C Interface”).
Power-supply voltage
Connect a constant voltage of external power supply (+ 10% -15%) within the range of 12 to 24 VDC to the DC power input
terminal.
●
Do not use at a voltage exceeding the rated voltage range (12 to 24 VDC +10%-15%)
・
Doing so may cause failure or heat generation.
・
This unit may not operate normally.
●
Ground the FG terminal of the switching power supply used for the power supply of this unit.
●
The power line of this unit should be dedicated for this unit, and be separate from other drive devices.
・
If strong noise is generated from the power line of another device, this unit may be damaged.
・
This unit may not start normally due to the inrush current of other drive devices.
・
Depending on the circuit configuration of this unit, other drive devices may not operate normally.
●
Select a switching power supply capacity of approximately 2W per unit for the dedicated power supply line for this
unit.
・
If the power capacity is insufficient, this unit may not operate normally.
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Connector
:
DC power input terminal
Signal name
Description
DC+
Power supply 12 to 24V input
0V
Power supply 0V input
FG
Frame ground
DC+
0V
FG
Caution