Speed Deviation Excessive Signal - Hitachi WJ200 Series Instruction Manual

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Speed Deviation Excessive Signal

The inverter outputs the detection signal when the deviation between the set speed
and actual motor speed becomes less the threshold level (P027). This function is valid
when connecting the encoder feedback to the inverter.
To use this function, assign
Option Terminal
Code Symbol
DSE
22
Valid for inputs:
Required settings
Notes:
• The example circuit for terminal [11] drives a relay
coil. Note the use of a diode to prevent the
negative-going turn-off spike generated by the coil
from damaging the inverter's output transistor.
"22 (DSE)" to one of the intelligent output terminals.
Function Name State
Speed deviation
excessive signal
11, 12, AL0 – AL2
P027
ON Deviation between the speed command and motor
speed is less than
OFF Deviation between the speed command and motor
speed exceeds P027
Example for terminal [11] (default output
configuration shown – see
Inverter output
terminal circuit
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
Inverter logic
circuit board
AL0
Power
supply
See I/O specs on
Description
P027
page 3-90):
DSE
CM2 11
RY
page 4-52 and 3-90):
DSE
AL1 AL2
Load
page 4-6