Disconnection Detection (Afp7Tc8) - Panasonic FP7 Series User Manual

6.6 Disconnection Detection (AFP7TC8)

6.6 Disconnection Detection (AFP7TC8)

■
Overview of functions
This function is to announce an error with the disconnection detection flag if the result of input
does not reach a certain value while thermocouple input, voltage input range of +1 to +5 V or
current input range of +4 to +20 mA is set in the thermocouple multi-analog input unit.
● If disconnection is detected while the disconnection detection execution relay is ON using a
user program, the disconnection detection flag will be turned ON.
● There are two ways to reset the disconnection detection. When selecting "Auto", the
disconnection detect flag will be automatically turned OFF at the time of reset. 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.
■
Action with the detection disconnection reset setting set to auto
( V / mA )
Analog input
value
Disconnection
detection
execution relay
(*1)
Disconnection
detection flag
(*2)
(Note 1) The disconnection threshold in the above figure is that when the voltage input range of +1 to +5 V or
current input range of +4 to +20 mA is set.
■
Action with the detection disconnection reset setting set to manual
( V / mA )
Analog input
value
Disconnection
detection
execution relay
(*1)
Disconnection
detection flag
(*2)
(Note 1) The disconnection threshold in the above figure is that when the voltage input range of +1 to +5 V or
current input range of +4 to +20 mA is set.
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.
WUME-FP7TCRTD-04
0.7 V or 2.8 mA
(t)
0.7 V or 2.8 mA
(t)