RYS MHT260a Error Codes: List of 26 Codes and Their Meaning

This is the list of alarm codes the RYS manual gives for the MHT260a motor amplifier. Find your code below and open it for what the manual says about its causes and what to do.

Alarm codes from p. 230

Code	What it means	Page
`Fn003`	Position preset	p. 230
`Fn004`	Alarm reset	p. 230
`Fn005`	History initialization	p. 230
`Fn006`	Parameter initialization	p. 230
`AL SE`	System error	p. 247
`AL OC`	Overcurrent, output overcurrent	p. 253
`AL 05`	Overspeed	p. 254
`AL Lu`	Low voltage, undervoltage	p. 247
`AL Hu`	High voltage, overvoltage	p. 250
`AL Et`	Encoder trouble	p. 253
`AL Ct`	Circuit trouble, amplifier trouble	p. 253
`AL dE`	Data error, memory error	p. 253
`AL Fb`	Fuse brown	p. 254
`AL CE`	Combination error	p. 247
`AL H2`	Resistor heat 2	p. 252
`AL EC`	Encoder communication error	p. 251
`AL OL`	Over load, motor overheating	p. 247
`AL rH`	Resistor heat, braking (DB) resistor overheat	p. 251
`AL OF`	Overflow, deviation excessive	p. 252
`AL AH`	Amp heat, amplifier overheating	p. 251
`AL EH`	Encoder heat, encoder overheating	p. 252
`AL RL`	Absolute data lost	p. 247
`AL RF`	Absolute data overflow	p. 247
`AL EE`	Terminal error	p. 247
`AL AL`	Absolute value data of the 16-bit serial encoder built in GYC/GYS type motor are lost.	p. 248
`AL CEE`	One and the same signal is allocated to several control input signal (CONTn) terminals on CN1 of amplifier.	p. 250

Codes and descriptions are taken from the manufacturer’s manual; page numbers link to the PDF. ManualLib is not affiliated with RYS. Found a mistake? Report an error.