2-65
Item R88D-
WT150H
R88D-
WT75H
R88D-
WT60H
R88D-
WT50H
R88D-
WT30H
R88D-
WT20H
R88D-
WT15H
R88D-
WT10H
R88D-
WT08H
R88D-
WT05H
Perfor-
mance
Speed control
range
1:5,000
Load fluctuation
rate
0.01% max. at 0% to 100% (at rated rotation speed)
Voltage fluctua-
tion rate
0% at rated voltage ±10% (at rated rotation speed)
Temperature fluc-
tuation rate
±0.1% max. at 0 to +50°C (at rated rotation speed)
Frequency char-
acteristics
400 Hz (at the same load as the rotor inertia)
Torque control re-
peatability
±2%
Note The input power specifications when using an R88D-WT08H with single-phase 200-V power sup-
ply are single-phase 220 to 230 V AC +10 to –15%, 50/60 Hz.
For details, refer to 6-3 Single-phase Power for 3,000-r/min (750-W) Servomotors.
H Protective and Diagnostic Functions
Error detection function Contents
Parameter corruption The checksum for the parameters read from the EEP-ROM does
not match.
Main circuit detection error There is an error in the detection data for the power supply circuit.
Parameter setting error Incorrect parameter setting.
Motor Mismatch The Servomotor does not match the Servo Driver.
Overcurrent Overcurrent detected, or improper radiation shield temperature
rise detected.
Regeneration error Regeneration circuit damaged due to large amount of regenerative
energy.
Regeneration resistor overload Regenerative energy exceeded the regeneration resistance.
Main circuit power supply setting error
(See note 1.)
The method set in Pn001.2 (AC/DC input selection) is different
from the AC/DC wiring method of the main circuit power supply.
Overvoltage Main circuit DC voltage above the allowable range.
Low voltage Main circuit DC voltage below the allowable range.
Overspeed Servomotor rotation speed exceeded the maximum speed.
Overload Detected at reverse limit characteristics when 245% of the rated
torque was exceeded.
Detected at reverse limit characteristics for 120% to 245% of the
rated torque.
Dynamic brake overload Regenerative energy exceeded the dynamic brake resistance dur-
ing dynamic brake operation.
Resistor for inrush current overload Inrush current exceeded the inrush resistance during power supply
inrush.
Overheat Abnormal temperature rise detected in radiation shield.
Backup error [Absolute] Encoder backup power supply dropped.
Checksum error [Absolute] Checksum error for Encoder memory data.
Battery error [Absolute] Encoder battery voltage dropped (to 2.7 V or lower).
Absolute error Encoder internal data error
Standard Models and Specifications Chapter 2
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