Delta HES Series Instructions For Use Manual page 99

Display Code Description of Anomaly
Abnormal in OH1 hardware wire
Abnormal in OH2 hardware wire
Clamp current detection error
(Hd0)
Over-current detection error (Hd1)
Over-voltage detection error (Hd2)
Ground current detection error
(Hd3
)

PG feedback error (PGF1)
PG feedback loss (PGF2)
Stalled PG feedback (the actual
rotating speed is 115% faster than
the maximum speed and the
elapsed time longer than one
second)
PG slip error (PGF4
PG card information error (PGF5)
Abnormal installation or action of
JP18, the safety loop card/control
board pin
Overpressure (ovP)
Pressure feedback fault (PfbF)
Chapter 5 Methods of Anomaly Diagnosis
Send back to manufacturer for repair.
Send back to manufacturer for repair.
Turn off the power and restart. If the same
problem persists, send back to manufacturer
for repair.
The actual rotating speed doesn't follow
speed command and the elapsed time longer
than 1 second. In this case, check if Pr01-30
Is not equal to zero and check PG feedback
wiring.
Check the PG feedback wiring. It could be an
open circuit.
1. Check the PG feedback wiring.
2. Check if PI gain and the settings for
acceleration/ deceleration are suitable.
3. Check if there is an output phase loss.
The causes of these errors could be loose
contact/ disconnection between encoder,
hybrid servo motor controller and motor. (OC
might also occur in different conditions.).
4. Check if the connection between oil pump
and motor is stuck.
5. Send back to manufacturer for repair.
Check if the settings of Pr.01-26 match those
in the installed PG card. If so, please send
back to manufacturer for repair.
1. Check if the safety loop card is installed
correctly on the control board and if the
output action is normal.
2. Check if pin JP18 is inserted into the
wrong position on the control board.
1. Check if the pressure sensor is working
properly and if its specification is correct.
2.Adjust pressure PI control Pr.00-20~00-37
Check if the wiring of pressure sensor is
correct.
3. Check the position of SW100 dip switch
(current type or open collector) on the control
board if correct.
1. Check if the wiring of pressure sensor is
correct. It could be open-circuit
2. Check if the pressure sensor signal is
below 1V.
5-7
HES Series
Troubleshooting