Encoder communication error means there’s a failure in serial communication between the encoder and amplifier, possibly due to wiring issues. The manual's first action is: “The serial communication is performed at 4 [Mbps] of data rate. Do not extend the wiring by connecting several short cables. Connect the encoder by optional cable or specified cables. The encoder wiring has about 5 [V] of voltage amplitude. Do no install it in a location where a strong electric or magnetic field exists.”
- Model
- Faldic MHT259a (RYS-L type)
- Display shows
- Encoder communication error (AL EC)
- Type
- Alarm code
- Source
- Manual p. 326
What AL EC means
Encoder communication error p. 330
Common causes
- Encoder communication error p. 330
- The communication is not made between 16-bit serial encoder and amplifier. p. 330
- The encoder wiring may be detached or disconnected. p. 330
What to do
- The serial communication is performed at 4 [Mbps] of data rate. Do not extend the wiring by connecting several short cables. Connect the encoder by optional cable or specified cables. The encoder wiring has about 5 [V] of voltage amplitude. Do no install it in a location where a strong electric or magnetic field exists. p. 330
Before you service the product, read the safety instructions in the manual p. 3.
If AL EC is still not resolved
- contact service / dealer p. 3 “reference must be made to this manual and other related documents.”
- contact service / dealer p. 4 “Customers, who want to use the products introduced in this manual for special systems or devices such as for atomic-energy control, aerospace use, medical use, and traffic control, are requested to consult the Fuji.”
This page summarises what the manufacturer’s manual says about AL EC; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Faldic. Found a mistake? Report an error.