SMC Networks PF2A Series, Manual

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Output operation
The output operation can be selected from the following:
Output (hysteresis mode and window comparator mode)
corresponding to instantaneous fl ow, output (accumulated output and
pulse output) corresponding to accumulated fl ow, error output, or
output OFF (PFMC7-L series only)
∗
At the time of shipment from the factory, it is set to hysteresis mode and normal output.
Delay time setting (PFMC7-L series only)
The time from when the instantaneous fl ow
reaches the set value to when the switch
output operates can be set. Setting the
delay time can prevent the switch output
from chattering.
The total switching time is the switch
operation time and the set delay time.
(Default setting: 0 s)
0.00 s
0.05 to 0.1 s (increment of 0.01 s)
0.1 to 1.0 s (increment of 0.1 s)
1 to 10 s (increment of 1 s)
20 s
30 s
40 s
50 s
60 s
0.05 s
0.1 s
0.5 s
1 s
2 s
5 s
Display
The display of the PFMC7 series and that of the PFMC7-L series differs slightly.
For the PFMC7-L For the PFMC7
UP button
Main screen (2-colour display)
Sub screen ( 9 -digit) Unit display
IO-Link status
indicator light
Output display
(Indicator light)
SET button
DOWN button
UP button
Main screen (2-colour display)
Sub screen (6-digit) Unit display
Output display
(Indicator light)
SET button
DOWN button
PFMC7(-L)
Series
Function Details
Green for ON, Red for OFF
Red for ON, Green for OFF
Red all the time
Green all the time
Display colour
The display colour can be selected for
each output condition. The selection of
the display colour provides visual iden-
tifi cation of abnormal values. (The display
colour depends on OUT1 setting.)
External input function
This function can be used only when the optional external input is
present. The accumulated fl ow, peak value, and bottom value can be
reset remotely.
Accumulated value external reset: A function to reset the accumulated fl ow value
when an external input signal is applied.
In accumulated increment mode, the accumulated
value will reset to and increase from zero.
In accumulated decrement mode, the accumulated
value will reset to and decrease from the set value.
∗
When the accumulated value is stored to memory, every time the
accumulated value external reset is activated, the memory (EEPROM) will
be accessed. Take into consideration that the maximum number of times
the memory can be accessed is 1 million times. The total number of
external inputs and the accumulated value memorizing time interval should
not exceed 1 million times.
Peak/Bottom value reset: Peak and bottom value are reset.
Forced output function
The output is turned on/off in a fi xed state when starting the system
or during maintenance. This enables the confi rmation of wiring and
prevents system errors due to unexpected output.
For the analogue output type, when ON the output will be 5 V or 20 mA,
and when OFF, it will be 1 V or 4 mA.
∗
Also, an increase or decrease of the fl ow and temperature will not
change the on/off status of the output while the forced output function is
activated.
Accumulated value hold
The accumulated value is not cleared even when the power supply
is turned off.
The accumulated value is memorized every 2 or 5 minutes during
measurement and continues from the last memorized value when
the power supply is turned on again.
The life time of the memory device is 1 million access times. Take
this into consideration before using this function.
Display OFF mode
This function will turn the display OFF. In this mode, decimal points
fl ash on the main screen. If any button is pressed during this mode,
the display reverts to normal for 30 seconds to allow checking of the
fl ow, etc.
Setting of security code
The user can select whether a security code must be entered to
release the key lock. At the time of shipment from the factory, it is set
such that a security code is not required.
Peak/Bottom value display
The maximum (minimum) fl ow rate is detected and updated from
when the power supply is turned on. In peak (bottom) value display
mode, this maximum (minimum) fl ow rate is displayed.
Key-lock function
Prevents operation errors such as accidentally changing setting values
Standard condition: Flow rate converted to a volume at 20 °C and 1 atm (atmosphere)
Normal condition: Flow rate converted to a volume at 0 °C and 1 atm (atmosphere)
Reference condition
The display unit can be selected from standard condition or normal
condition.
Display mode
The display mode can be selected from
instantaneous fl ow or accumulated fl ow.
Instantaneous fl ow display
Accumulated fl ow display
Response time (Digital fi lter)
The response time can be selected to suit the application.
(Default setting : 1 s)
Abnormalities can be detected more quickly by setting
the response time to 0.05 seconds.
The effect of fl uctuation and fl ickering of the display can
be reduced by setting the response time to 2 seconds.
∗
5 s can only be selected for the PFMC7-L series.
24
PFG300
PFMC7
PFMC7-L
Function
Details