Power Supply; Applicable Power Supply; Power Supply Sequence For Sensor Head; Instantaneous Power Failure - Panasonic HL-G1 A-C5 Series User Manual

Introduction

Power Supply

 Applicable Power Supply
• Select a power supply with a maximum ripple of 0.5 V (peak to peak) and a minimum
current capacity of 0.5 A.
• Be sure to ground the FG terminal in order to prevent an adverse influence of
high-frequency noise if a commercially available switching regulator is used for the
power supply.
• A transformer may be connected to the power supply on the condition that the
transformer is of isolation type. The product or the power supply may be damaged if
an auto transformer is used.
• In order to protect the system from abnormally high voltages from the power supply
line, be sure to use an isolated power supply with a built-in protective circuit.
• In the case of using a power supply that does not incorporate a protective circuit, be
sure to connect the power supply to the system through a protective element, such as a
fuse.
 Power Supply Sequence for Sensor Head
• Arrange a power supply sequence so that the sensor head will be turned ON
earlier than the I/O power supply.
• Arrange a power supply sequence so that the I/O power supply will be turned ON
earlier than the sensor head.
• Do not turn ON the sensor head again within 10 seconds after the sensor head is
turned OFF.
• The system will be ready to operate approximately 40 to 50 seconds after the
system is turned ON, depending on the contents of settings. No outputs are
determined during startup. Do not output anything during the period.
• An analog voltage of 11 V and an analog current of approximately 21.6 mA will
be output until the system becomes ready to operate.
• Do not turn OFF the system while system settings are being saved. In the worst
case, the sensor head system may be damaged and fail to restart.

Instantaneous Power Failure

If an instantaneous power failure occurs, the system will operate continuously or
go to the initial power-on state, depending on the duration of the power failure. Do
not use the system in environments where instantaneous power failures occur.
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