Panasonic HL-C1 Series User Manual page 47

CHAPTER 3 INPUT AND OUTPUT TERMINAL BLOCKS
3-4 Wiring Power Supply
Terminal Layout
• Use the plus (+) terminal and minus (-) terminals on the input terminal block to wire the
power supply, supplying 24V DC.
• Use twisted wires for the power supply to minimize the effect of noise.
Rated Voltage
Permissible Voltage
Fluctuation Range
Current Consumption
Inrush Current
Use an Insulated Power Supply with an Internal
Protective Circuit of Sufficient Capacity.
• Large current exceeding the rated current flows temporarily when power is turned on.
Use an insulated power supply with an internal protective circuit of sufficient capacity
(margin of 2A or more current capacity) to protect the circuit against irregular voltage in
the power line, and check power-on operation.
• An uninsulated type is used in the controller's regulator.
• If a power supply without an internal protective circuit is used, supply power to the
controller via a protective element such as a fuse.
Switch the Power Supply On and Off at the Primary
Side.
• Switch the power supply on and off at the primary side (100V AC). If it is switched on
and off at the secondary side (24V DC), the controller's fuse may burn out.
Not good
Primary Side
Power
Supply
To Improve Noise Resistance
• Wire the controller, input device, and power device to run on separate systems.
• If noise from input and output circuits is a concern, it is recommended that power be
supplied separately for the controller and input and output power supplies.
24V DC
21.6 to 26.4V DC
1 Sensor Head: 0.43A approx.
2 Sensor Heads: 0.55A approx.
8A or less
Secondary Side
Laser
Sensor
3-7
Good
Primary Side
Power
Supply
24V DC
Secondary Side
Laser
Sensor