R88M-W75030T-S1 Omron, R88M-W75030T-S1 Datasheet - Page 373

• Manufacturer Part Number: R88M-W75030T-S1
• Description: SERVO MOTOR 750W 200V
• Manufacturer: Omron

Specifications of R88M-W75030T-S1

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: R88MW75030TS1

Troubleshooting
Overtravel (OT)
(Travelling outside
of the zone speci-
fied by the host
device)
Symptom
The forward/reverse drive
prohibit input signal does
not change. (POT (CN1-7
or NOT (CN1-8) is at H
level.)
The forward/reverse drive
prohibit input signal is mal-
functioning. (Does the POT
or NOT signal sometimes
change?)
The forward/reverse drive
prohibit input signal (POT/
NOT) selection is incorrect.
The Servomotor stopping
method selection is incor-
rect.
The overtravel limit switch
position is inappropriate.
Noise is carried because
the encoder cable specifi-
cations are incorrect.
The encoder cable is car-
rying noise because the
distance exceeds the oper-
ating range.
Noise interference is
occurring because of dam-
age to the encoder cable.
There is excessive noise
interference to the encoder
cable.
Probable cause
• Is the voltage correct for
• Is the operating status cor-
• Is the wiring to the over-
• Does the external power
• Is overtravel limit switch
• Is the overtravel limit switch
• Check the POT signal
• Check the NOT signal
• Is the free-run stopping
• Is free-run set for torque
• The overtravel limit switch
• Is twisted-pair wire or
• Use a maximum wiring dis-
• The encoder cable is
• Is the encoder cable bun-
control?
position is less than the
coasting amount.
twisted-pair bound shielded
core wire of 0.12 mm
the external power supply
(+24 V) for input signals?
rect for the overtravel limit
switch?
travel limit switch correct?
supply (+24 V) voltage fluc-
tuate?
operation unstable?
wiring correct (cable
undamaged, screws tight-
ened, etc.)
selection (Pn50A.3).
selection (Pn50B.0)
method selected for the
Servomotor?
made of tin-coated soft
copper, being used?
tance of 20 m.
crimped, or deterioration of
the insulation is allowing
noise to affect the signal
line.
dled with, or close to, lines
carrying a large current?
Items to check
2
min.,
• Use a +24-V external
• Correct the status of the
• Correct the wiring to the
• Eliminate the fluctuation in
• Stabilize overtravel limit
• Correct the wiring to the
• Correct the POT signal
• Correct the NOT signal
• Check the settings for
• Check the settings for
• Set the overtravel limit
• Make sure that the encoder
• Make sure that the encoder
• Correct the cable installa-
• Arrange the cable so that
power supply.
overtravel limit switch.
overtravel limit switch.
the external power supply
(+24 V) voltage.
switch operation.
overtravel limit switch.
selection (Pn50A.3)
selection (Pn50B.0)
Pn001.0 and Pn001.1.
Pn001.0 and Pn001.1.
switch position correctly.
cable conforms to the spec-
ifications.
cable distance conforms to
the specifications.
tion.
the encoder cable is not
affected by surges.
Countermeasures
Chapter 5
5-41