Panasonic HL-C1 Series User Manual page 15

5. Power Supply
• Select a power supply with a ripple of 0.5V or less (P-P) and a current
capacity of 2A or more.
• When a commercial switching regulator is used, always use it with the
frame ground (F.G.) terminal connected to ground to avoid the influence
of high frequency noise.
• When using a transformer in the power supply, use an insulated
transformer. If an auto transformer (single turn transformer) is used, this
product or the power supply may be damaged.
• Do not turn the controller's power on again within 10 seconds after turning
power off.
• Use an insulated power supply with a built-in protective circuit to protect
against abnormal voltages from the power line.
• If a power supply without an internal protective circuit is used, be sure to
supply power via a protective element such as a fuse.
6. Instantaneous Power Failures
• If the duration of an instantaneous power failure is 10ms or less, operation
continues.
• If the duration of an instantaneous power failure is 10 to 45ms, one of the
following occurs:
(1) Operation continues.
(2) Analog output changes temporarily and BRIGHT and DARK indicators
blink, then the sensor recovers automatically.
(3) The same status as when the power supply is turned on occurs.
• If an instantaneous power failure lasts more than 45ms, the same status
as when the power supply is turned on occurs.
7. Installation
 Controller
• Install the controller unit based on "Heat Radiation Considerations" on
page 2-2, assuring plenty of space around the unit. If it is installed in a
manner that is not based on instructions, it could cause malfunction due
to the rise in temperature, etc.
• If the controller is mounted on a control board, etc., internally where air
circulation is blocked, ambient temperature will rise due to heat generated by
the controller, so use forced cooling.
• If multiple units are installed in series, they can be installed against each
other only if they are installed vertically.
• Ventilation slits for heat radiation are provided in the controller. Provide
adequate space for radiating heat to dissipate, so as not to block the
ventilation slits.
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