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Omron R88D-1SN ECT Series User Manual

Omron R88D-1SN ECT Series
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7 Applied Functions
7 - 50
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
7-14 Communications Error Period Com-
mand Correction Function
If a target position is lost because of a communications error, this function corrects the next target posi-
tion on the basis of the previous target position.
The communications error period command correction function is always enabled under the following
conditions.
The mode of operation is Cyclic synchronous position mode (csp)
The synchronous mode is Distributed Clock (DC) Mode
This function corrects a target position so that the Velocity of Position Command (3010-83 hex)
becomes equal to the previous velocity. When the mode of operation is Cyclic synchronous velocity
mode (csv) or Cyclic synchronous torque mode (cst), the previous command is retained.
The following is an operation example. The velocities corrected by this function are closer to the Veloc-
ity of Position Command (3010-83 hex), which is expected when no communications error occurs,
than the velocities not corrected.
7-14-1 Operating Conditions
7-14-2 Operation Example
Velocity of
Position Command
When a communications
error occurs
When no communications
error occurs
Communications
error occurs
Communications
error occurs

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Omron R88D-1SN ECT Series Specifications

General IconGeneral
FeedbackIncremental encoder, Absolute encoder
Position ControlYes
Speed ControlYes
Torque ControlYes
Communication InterfaceEtherCAT
Power Supply Voltage200 to 240 VAC
Output Power0.1 to 1.5 kW
Input Voltage Range170 to 264 VAC
Control MethodSine-wave PWM control
Main Circuit Power Supply200-240 VAC
Applicable Motor Capacity0.1 to 1.5 kW
Protection FunctionsOvercurrent, Overvoltage, Undervoltage, Overheating, Encoder Error
Ambient Operating Temperature0 to 55°C
Vibration Resistance4.9 m/s² (10 to 55 Hz)
Shock Resistance98 m/s2
WeightVaries by model

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