Output Function Adjustment Parameters; Overload Warning Output; Frequency Arrival Output; Pid Fbv Output - Hitachi WJ200 Series Instruction Manual

Output Function Adjustment Parameters

Overload Warning Output - The following
parameters work in conjunction with the
intelligent output function, when configured.
The overload level parameter (C041) sets the
motor current level at which the overload
signal [OL] turns ON. The range of setting is
from 0% to 200% of the rated current for the
inverter. This function is for generating 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).
Frequency Arrival Output - The frequency
arrival signal, [FA1] or [FA2], 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 specified to acceleration ad
deceleration ramps, C042 and C043. Refer
also to chapter 4.
PID FBV Output - The Error for the PID
loop is the magnitude (absolute value) of
the difference between the Set point
(desired value) and Process Variable
(actual value). The PID output deviation
signal [OD] (output terminal function
option code 04) indicates when the error
magnitude has exceeded a magnitude you
define.
Over/Under-torque Output – The inverter outputs the over/under-torque signal when it
detects that the estimated motor output torque exceeds the specified level. To enable
this function, assign parameter "07" (OTQ: over/under-torque signal) to an intelligent
output terminal. Over-torque or under-torque can be selected by function C054.
This function is effective only when the V/F characteristic curve selection "A044" or
"A244" is the sensorless vector control or 0Hz range sensorless vector control. With any
other V/F characteristic curve is selected, the output of the OTQ signal is unpredictable.
When using the inverter for a lift, use the OTQ signal as the trigger to stop braking.
Use the frequency arrival signal as the trigger to start braking.
Output
current
C041
0
[OL]
output
1
ON
0
Output
freq.
C042
[FA2]
output
1
ON
0
PID Error (PV-SP) deviation threshold
Output
[OD]
output
1
0
3−95
t
t
C043
t
t
C044
t
t