2-62
2-4 Servo Driver Specifications
H OMNUC W-series AC Servo Drivers (R88D-WTj)
Referring to 2-2 Servo Driver and Servomotor Combinations, select a
Servo Driver to match the Servomotor that is being used.
OMNUC W-series AC Servomotor Drivers can handle either pulse in-
puts or analog inputs. The control mode is switched to match the con-
troller being used. (The default setting is for position control by pulse
train commands.)
2-4-1 General Specifications
Item Specifications
Ambient operating temperature 0 to 55°C
Ambient operating humidity 90% max. (with no condensation)
Ambient storage temperature –20 to 85°C
Ambient storage humidity 90% max. (with no condensation)
Storage and operating atmo-
sphere
No corrosive gasses.
Vibration resistance 10 to 55 Hz in X, Y, and Z directions with 0.1-mm double amplitude; accel-
eration: 4.9 m/s
2
max.
Impact resistance Acceleration 19.6 m/s
2
max., in X, Y, and Z directions, three times
Insulation resistance Between power line terminals and case: 0.5 MΩ min. (at 500 V DC)
Dielectric strength Between power line terminals and case: 1,500 V AC for 1 min at 50/60 Hz
Between each control signal and case: 500 V AC for 1 min
Protective structure Built into panel (IP10).
EC directives EMC directive
EN55011 class A group1
EN61000-6-2
Low-voltage
directive
EN50178
UL standards UL508C
cUL standards cUL C22.2 No.14
Note 1. The above items reflect individual evaluation testing. The results may differ under compound
conditions.
Note 2. Absolutely do not conduct a withstand voltage test with a Megger tester on the Servo Driver. If
such tests are conducted, internal elements may be damaged.
Note 3. Depending on the operating conditions, some Servo Driver parts will require maintenance.
Refer to 5-5 Periodic Maintenance for details.
Note 4. The service life of the Servo Driver is 50,000 hours at an average ambient temperature of
40°C at 80% of the rated torque.
Standard Models and Specifications Chapter 2
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