Selection Of Power Supply And Restrictions On Combination - Panasonic FP7 User Manual

1.2 Selection of Power Supply and Restrictions on
Combination
1.2.1 Power Supply for Internal Circuit
 Restrictions on combination of power supply for internal circuit and units
• Power for internal circuit is supplied from a power supply terminal of the power supply unit or
the CPU unit.
• Select units within the respective restrictions indicated below.
When a power supply unit is used
Select units so that the sum of internal current
consumptions of connected input/output units and
intelligent units does not exceed the capacity of the
power supply unit.
 Selection of a 24V DC power supply
• Select a power supply larger than the capacity of the units. In the minimum configuration,
select a power supply of 24 W or larger.
• In order to protect the unit against abnormal voltage from the power supply line, the power
supply should be an insulated type, and should be enclosed within a protective circuit.
• If using a power supply device without an internal protective circuit, always make sure power
is supplied to the unit through a protective element such as a fuse.
When a power supply unit is used, do not connect a DC power supply to the CPU unit.

1.2 Selection of Power Supply and Restrictions on Combination

When no power supply unit is used
Select units so that the sum of internal current
consumptions of connected input/output units and
intelligent units does not exceed Max. 2 A.
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