5-144
F codes
E codes
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
Ch
ap
. 5
FUNCTION C
O
DES
Gain and bias
(Example) Mapping the range of 1 through 5 V at terminal [12] to 0 through 100%
[ 3 ] PID command with UP/DOWN control (J02 = 3)
When the
UP/DOWN
control is selected as a PID command, turning the terminal command
UP
or
DOWN
ON causes the
PID command to change within the range from 0 to 100%.
The PID command can be specified in mnemonic physical quantities (such as temperature or pressure) with the PID display
coefficients (E40, E41).
To select the
UP/DOWN
control as a PID command, the
UP
and
DOWN
should be assigned to the digital input terminals
[X1] to [X7]. (
E01 to E07, data = 17, 18)
UP DOWN
Function
Data = 17
Data = 18
OFF
OFF
Retain PID command value.
ON
OFF
Increase PID command value at a rate between 0.1%/0.1 s and 1%/0.1 s.
OFF
ON
Decrease PID command value at a rate between 0.1%/0.1 s and 1%/0.1 s.
ON
ON
Retain PID command value.
The inverter internally holds the PID command value set by the
UP
/
DOWN
control and applies the held value at
the next restart (including powering ON).
[ 4 ] PID command via communications link (J02 = 4)
Use function code S13 that specifies the communications-linked PID command. The transmission data of 20000 (decimal) is
equal to 100% (maximum frequency) of the PID command. For details of the communications format, refer to the RS-485
Communication User's Manual.
• Other than the remote command selection by J02, the multi-frequency 4, 8 or 12 (specified by C08, C12 or C16,
respectively) specified by terminal commands
SS4
and
SS8
can also be selected as a preset value for the PID
command.
Calculate the setting data of the PID command using the expression below.
PID command data (%) =
Preset multi-frequency
×
100
Maximum frequency
• In dancer control (J01 = 3), the setting from the keypad interlocks with data of J57 (PID control: Dancer
reference position), and is saved as function code data.
Summary of Contents for FRENIC-MEGA
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