Disconnection Detection - Panasonic FP7 User Manual

Optional Settings for Analog Input

6.6 Disconnection detection

Overview of Functions
The disconnection detection flag is turned ON and the error indicator will be lit if the result of
input does not reach a certain value while a voltage input range of +1 to +5 V or input current
range of +4 to +20 mA is set.
Voltage input range of +1 to +5 V set: 0.7 V or less; Current input range of +4 to +20 mA set:
2.8 mA max.
• If the input exceeds the above value while the disconnection detection execution relay is
turned ON, the disconnection detection flag will be turned OFF automatically, provided that
the auto setting has been made.
• If the manual reset setting is made, the disconnection detection flag will be turned OFF by
using a user program and turning OFF the disconnection detection execution relay.
• If the configuration-disconnection detection setting has not been made, the function will be
disabled with the disconnection detection execution relay turned ON.
Action with the detection disconnection reset setting set to auto
(V)
Analog input
value
(Flag)
Disconnection
detection
execution relay
(*1)
Disconnection
detection flag
(*2)
Action with the detection disconnection reset setting set to manual
(V)
Analog input
value
(Flag)
Disconnection
detection
execution relay
(*1)
Disconnection
detection flag
(*2)
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6-14
Disconnection threshold
While in manual mode, the
disconnection detection flag (X)
will not automatically turn OFF
when the voltage is recovered.
Disconnection threshold
The disconnection detection
flag (X) is turned OFF with
the disconnection detection
execution relay turned OFF.
0.7 V or 2.8 mA
(t)
0.7 V or 2.8 mA
(t)