3-7
Settings under PID process control
To enable the PID process control, you need to set function code J01 to "1" or "2."
Under the PID control, the items that can be specified or checked with
and
keys are different
from those under regular frequency control, depending upon the current LED monitor setting. If the
LED monitor is set to the speed monitor (E43 = 0), you can access manual speed commands
(frequency command) with
and
keys; if it is set to any other, you can access the PID process
command with those keys.
Refer to the FRENIC-Multi User's Manual (MEH457) for the details of the PID control.
Setting the PID process command with the
and
keys
(1) Set function code J02 to "0:
/
keys on keypad."
(2) Set the LED monitor to something other than the speed monitor (E43=0) when the inverter is in
Running mode. When the keypad is in Programming or Alarm mode, you cannot modify the PID
process command with the
/
key. To enable the PID process command to be modified
with the
/
key, first switch to Running mode.
(3) Press the /
key to display the PID process command. The lowest digit and its decimal
point blink on the LED monitor.
(4) To change the PID process command, press the
/
key again. The PID process command
you have specified will be automatically saved into the inverter’s internal memory. It is retained
even if you temporarily switch to another PID process command source and then go back to the
via-keypad PID process command. Also, it is retained in the memory even while the inverter is
powered off, and will be used as the initial PID process command next time the inverter is
powered on.
• Even if multi-frequency is selected as a PID process command (
SS4
or
SS8
= ON), you
still can set the process command using the keypad.
• When function code J02 is set to any value other than "0," pressing the
/
key
displays, on the 7-segment LED monitor, the PID process command currently selected,
while you cannot change the setting.
• On the 7-segment LED monitor, the decimal point of the lowest digit is used to
characterize what is displayed. The decimal point of the lowest digit blinks when a PID
process command is displayed; the decimal point lights when a PID feedback amount is
displayed.
Table 3.4 PID process Command Manually Set with
/
Key and Requirements
PID control
(Mode
selection)
J01
PID control
(Remote
command
SV
)
J02
LED monitor
E43
Multi-frequency
SS4
,
SS8
With
/
key
PID process command by keypad
0
1 or 2
Other than 0
Other than 0
ON or OFF
PID process command currently
selected
