Hitachi SJ100 Series Instruction Manual page 100

3–34
"C" Group: Intelligent Terminal Functions
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.
Func.
Name
Code
C41 Overload level setting Sets the overload signal level
C42 Frequency arrival
setting for accel.
C43 Arrival frequency
setting for decel.
C44 PID deviation level
setting
"C" Function
Description
between 0% and 200% (from 0
to two times the rated current
of the inverter)
Sets the frequency arrival
setting threshold for the output
frequency during acceleration
Sets the frequency arrival
setting threshold for the output
frequency during deceleration
Sets the allowable PID loop
error magnitude (absolute
value), SP - PV, range is 0.0 to
100%, resolution is 0.1%
Motor
current
Overload
signal
1
0
Output
C42
frequency
Arrival
signal
1
0
SP
PID Error
(PV-SP)
Deviation
Signal
1
0
Defaults
Run-
time
EU/
Units
Edit
US
✘
(rated current
for each
inverter)
✘
0.0 Hz
✘
0.0 Hz
✘
3.0 %
C41
time
C43
time
C44
time
DOP,DRW,DOP+
Func.
Name
Code
F-33 OV Load
F-32 ARV ACC
F-32 ARV DEC
F-33 OV PID