R88M-W75030T-S1 Omron, R88M-W75030T-S1 Datasheet - Page 372

• 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

5-40
Troubleshooting
Absolute encoder
position displace-
ment error (The
position in the host
device's memory
when the power is
turned OFF is dif-
ferent from the
position when the
power is next
turned ON.)
Symptom
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.
The electric potential of the
FG is fluctuated due to
noise from machinery
(such as welders) in the
vicinity of the Servomotor.
The Servo Driver pulse
count is incorrect due to
noise.
There is interference due
to the encoder being sub-
jected to excessive vibra-
tion and shock.
Encoder is defective.
Servo Driver is defective.
Probable cause
• Multi-turn data is not output
• Check whether the cable is
• Use a maximum wiring dis-
• The encoder cable is
• Is the encoder cable bun-
• What is the grounding sta-
• Is noise being carried to the
• Check for machine vibra-
• Encoder is defective.
twisted-pair wire or twisted-
pair bound shielded core
wire of 0.12 mm
made of tin-coated soft
copper.
tance of 50 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?
tus of equipment such as
welding machines near the
Servomotor (e.g., imper-
fectly grounded, not
grounded at all)?
line for signals coming from
the encoder?
tion or faulty Servomotor
mounting (mounting sur-
face precision, secure fas-
tening, centering, etc.).
(Pulses are not changing.)
from the Servo Driver.
Items to check
2
min.,
• Make sure that the encoder
• Make sure that the encoder
• Correct the cable installa-
• Arrange the cable so that
• Ground the machinery to
• Implement measures
• Reduce machine vibration
• Replace the Servomotor.
• Replace the Servo Driver.
cable conforms to the spec-
ifications.
cable distance conforms to
the specifications.
tion.
the encoder cable is not
affected by surges.
prevent branching to the
encoder's FG.
against noise in the
encoder wiring.
or correct the Servomotor
mounting.
Countermeasures
Chapter 5