Instruction manual

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-CC.

Precautions on using the external power supply

CAUTION

z 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-CC may not function properly.

z 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.

z Do not share the power line with other devices.

• Strong noises introduced from other devices may cause damage to the

AD-8923-CC.

• Inrush current from other devices may cause the AD-8923-CC not to start

up properly.

• Circuit configuration of the AD-8923-CC may affect other devices to

prevent them from functioning properly.

z Select a switching power supply with a capacity of approximately 700mA

for each AD-8923-CC. Note that the AD-8923-CC may not start up with a

capacity less than 700mA.

• If the power supply capacity is not sufficient, the AD-8923-CC may not

function properly.

z Be sure to add a noise filter on the front end of the switching power supply

and ground the FG terminal.

• This will increase the resistance against noises.

z Be sure to ground the FG terminal of the AD-8923-CC and the AD-4212C.

• This will increase the resistance against noises.