YOKOGAWA FA-M3V e-RT3 Plus, Руководство по оборудованию

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A2-84
IM 34M06C11-01E
*3: If an inductive load, such as a relay, is to be connected, a surge protector is also required on the load side. Connect
a surge protector or a diode across the load nearby so that the module output terminal voltage will not exceed the
specified operating load voltage range. For details, see Subsection A3.6.5, “Connecting Output Devices.”
*4: For information on the module’s behavior during a CPU failure, see subsection A4.3.3, “Indicating Problem Severity
and Status of Output Module.”
*5: When F3SP22, F3SP28, F3SP38, F3SP53, F3SP58, F3SP59, F3SP66, F3SP67, F3SP71 or F3SP76 module is
used, this setting can be specified in 16-point units.
*6: The contact operation of the output block of the circuit and the LED display operate independently and thus may be
inconsistent in the event of an error.
CAUTION
Make sure that the polarity of the external power supply is correct. If incorrect polarity
and shorted load occur at the same time, the output element will be damaged and
smoking or scattering chips may occur.
Never connect to these modules a connector wired for F3XD32 or F3XD64. Otherwise,
the protector function would not work and the internal elements may be damaged.
Note
Operation of the protection circuitry:
- If short-circuit occurs, the ON voltage increases and the short-circuit current is
limited within the range 1-3A.
- Once the short-circuit condition disappears, output behavior is restored to normal.
- If the short-circuit condition continues, the temperature of the output element
increases due to the short-circuit current. If the temperature reaches approx. 160

C,
the overheat protector will be activated and will shut down the output.
- If the temperature drops by approx. 10

C after the overheat protector had been
activated, the output is restored.
- The overheat protector is not activated as long as there is no short-circuit condition
and the module is operated normally within its specifications.
- Both the short-circuit protector and overheat protector are designed to control
outputs individually. Under some short-circuit conditions, however, the overheat
protector may shut down not only its associated output but also other outputs.
- Both the short-circuit protector and overheat protector are designed to protect the
output elements of the module against short-term short-circuit conditions. Never
leave the module in prolonged short-circuit condition. Otherwise, the module
enclosure may deteriorate or the PCB may be discolored.