User`s guide

139
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
P528
0.00 to 99.9
Process Variable
[ 1.00 ]
Scale Factor
0.01 (< 10.0);
0.1 (> 9.99)
Defines the process variable scale. It makes the
conversion between percentagevalue(used internallyby
the inverter) and the process variable unit.
P528 defines how the process variable at P040 will be
shown: P040 = value % x P528.
Set P528 to:
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P528 =
full scale of the used sensor (FM)
P234
P535
0.00 to 100.00
Wake up Band
1.00 %
0.01 %
The parameter P535 influences the “Sleep Mode” only
when the PID regulator is active (P203 = 1).
The“Sleep Mode”, used together with the PID controller,
makes it possible that the inverter be disabled (Srdy)
during intervals when the controlled system is without
load, andthat it beenabledimmediatelywhenthe system
is loaded again.
P535 allows programming the error level at the PID
regulator output, necessary for the inverter to leave the
“Sleep Mode” and to supply the controlled system
requirements again.
Once the PID regulator is active (P203 = 1),thecondition
for the inverter to enter the “Sleep Mode” is defined by
P212, and the PID regulator error must be lower than
zero. When this condition is satisfied during the interval
given by P213, theinverterentersthe “Sleep Mode”,i.e.:
FE

P212
run

erro
PID


Srdy

t

P213
If the PID action is reverse (P527 = 1) the condition for
the inverter to enter the “Sleep Mode” becomes:
FE

P212
run

erro
PID

0

Srdy

t

P213
If the action of the PID regulator is direct (P527 = 0), the
condition for the CFW-08 to leave the “Sleep Mode” is
defined by P212, and the PID regulator error must be
higher than the P535 value, i.e.:
FE

P212
Srdy

erro
PID

P535

run

t

P213