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Error detection function Contents
Overspeed error [Absolute] Servomotor rotation speed exceeded 200 r/min when Encoder
power was turned ON.
Encoder overheating [Absolute] Improper Encoder temperature rise detected.
Speed command input reading error The A/D end signal was not output from the A/D converter within a
fixed time.
Torque command input reading error The A/D end signal was not output from the A/D converter within a
fixed time.
System error A control circuit system error was detected.
Runaway detected The Servomotor rotated in the opposite direction from the com-
mand.
Multi-turn data error [Absolute] Absolute Encoder setup was incorrect.
Encoder communications error No communication between the Encoder and the Servo Driver.
Encoder parameter error The parameters in the Encoder are corrupted.
Encoder data error Data from the Encoder is incorrect.
Multi-turn limit data mismatch [Abso-
lute]
The multi-turn limits for the Encoder and the Servo Driver do not
match.
Deviation counter overflow Deviation counter residual pulses exceeded level set for Pn505.
Motor-load deviation over (See note 1.) The error for the full closed-loop or semiclosed-loop encoder ex-
ceeds the number of command units set in Pn51A.
Option detection error (See note 1.) An Option Unit has been removed.
Missing phase detected Main-circuit power supply missing phase or disconnection de-
tected.
Motor current error (See note 2.) The current that flows to the Servomotor is abnormally small for
the torque command from the Servo Driver.
Motor conduction error (See note 2.) When the Servomotor is ON, the baseblock condition continues,
regardless of the Servo Driver settings or external input.
Parameter Unit transmission error Data could not be transmitted after the power was turned ON.
(CPF00)
Transmission timeout error (CPF01)
Note 1. These functions are supported for Servo Drivers with a software version of “r.0014” or later.
Note 2. These functions are supported for Servo Drivers with software version of “r.0037.”
Standard Models and Specifications Chapter 2
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