A&D AD-8923-BCD Instruction Manual - 3.3. Turning The Power On
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3.3. Turning the power on
As a power supply, an external 24-VDC power supply (24 VDC±10% /
700mA) or a 12-VDC AC adapter can be used.
Note
When the AD-4212C is used, connecting power to either the
AD-8923-BCD or the AD-4212C will supply power to both devices.
So, instead of the AD-8923-BCD, using the AC adapter on the
AD-4212C will supply power to the AD-8923-BCD.
If the power is connected to both, no problems occur because the
power to be used is selected automatically.
When the external 24-VDC power supply is used
Connect an external 24-VDC power supply to the DC input terminal located
on the rear of the AD-8923-BCD.
Precautions on using the external power supply
CAUTION
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Use a power supply within the rated voltage range (24 VDC±10%).
Never use a power supply with a voltage exceeding the rated range.
• It may cause damage or heat buildup.
• The AD-8923-BCD may not function properly.
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Ground the FG terminal of the switching power supply used.
• To avoid electrical shock and increase the system safety.
• To increase the resistance against noises.
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Do not share the power line with other devices.
• Strong noises introduced from other devices may cause damage to the
AD-8923-BCD.
• Inrush current from other devices may cause the AD-8923-BCD not to start
up properly.
• Circuit configuration of the AD-8923-BCD may affect other devices to
prevent them from functioning properly.
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Select a switching power supply with a capacity of approximately 700mA
for each AD-8923-BCD. Note that the AD-8923-BCD may not start up with
a capacity less than 700mA.
• If the power supply capacity is not sufficient, the AD-8923-BCD may not
function properly.