Hitachi L100 - Manual (Page 90)

“C” Group: Intelligent Terminal Functions
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3–34
Output Function Adjustment Parameters
The overload level parameter (C41)sets the
motor current level at which the overload
signal becomes true. The range of settings
is from 0% to 200% of the rated current
for the inverter. This function is for gener-
ating an early warning logic output,
without causing either a trip event or a
restriction of the motor current (those
effects are available on other functions).
The frequency arrival signal is intended to
indicate when the inverter output has
reached (arrived at) the target frequency.
You can adjust the timing of the leading
and trailing edges of the signal via two
parameters specific to acceleration and
deceleration ramps, C42 and C43.
The Error for the PID loop is the magni-
tude (absolute value) of the difference
between the Setpoint (desired value) and
Process Variable (actual value). The PID
output deviation signal (output terminal
function option code 04) indicates when
the error magnitude has exceeded a magni-
tude you define.
0
Motor
current
C41
time
Overload
signal
1
0
Output
frequency
C42
time
Arrival
signal
C43
1
0
PID Error
(PV-SP)
C44
time
Deviation
Signal
1
SP
“C” Function
Run-
time
Edit
Defaults DOP,DRW,DOP+
Func.
Code
Name Description
EU/
US
Units
Func.
Code
Name
C41 Overload level setting Sets the overload signal level
between 0% and 200% (from 0
to two times the rated current
of the inverter)
✘ (rated current
for each
inverter)
F-33 OV Load
C42 Frequency arrival
setting for accel. Sets the frequency arrival
setting threshold for the output
frequency during acceleration ✘ 0.0 Hz F-32 ARV ACC
C43 Arrival frequency
setting for decel. Sets the frequency arrival
setting threshold for the output
frequency during deceleration ✘ 0.0 Hz F-32 ARV DEC
C44 PID deviation level
setting Sets the allowable PID loop
error magnitude (absolute
value), SP - PV, range is 0.0 to
100%, resolution is 0.1% ✘ 3.0 % F-33 OV PID
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