Zapi EPS-AC0 User Manual

Page - 90/95 AEMZP0BA - EPS-AC0 - User Manual
position.
In application with toggle switches, verify the encoder is not
mechanically loosened. Check there is not a mechanical block of
the steered wheel.
To make easier the fault catching, set DEBUG OUTPUT to level
11 (see 12.4.6.4).
9) STEPPER MOTOR MISM
CAN Bus Code =219
- Cause: This alarm occurs if the frequency and the amplitude of the
voltages from the stepper motor lines are mismatched in between
(i.e. the voltage from the D and Q line of the stepper motor have
high amplitude but with very low frequency). In normal condition
when the amplitude of the stepper motor lines increases, the
frequency of the stepper motor lines must increase too.
- Remedy: It is necessary to replace the controller.
10) ENCODER ERROR
CAN Bus Code =241
- Cause: It occurs when ENCODER CONTROL is set ON and the real
frequency does not pursuit the commanded frequency
- Remedy: This condition is several times due to either, a mismatching
between the Encoder resolution used in the SW and the real
encoder resolution, or a wrong connection between the two
encoder channels. In this latest case exchange in between the two
encoder channels.
11) BAD ENCODER SIGN
CAN Bus Code =83
- Cause: It occurs in applications with toggle switches when the applied
frequency (FREQUENCY) and the motor speed (ENC SPEED)
have opposite sign.
- Remedy: Swap in between the two encoder channels (CNB#7 with CNB#8).
14.1.4 Four Blinks Alarms
1) EEPROM KO
CAN Bus Code = 13
- Cause: It occurs if a test to write and read one location in EEPROM fails.
The SW expects to read the written value. It occurs also when the
hour counter gives different values between the three redundant
locations in which it is recorded. It occurs also when the busy bit of
the EEPROM does not rise within 12 msec.
- Remedy: It is necessary to replace the controller.
2) GAIN EEPROM KO
CAN Bus Code = 244
- Cause: The parameters to compensate for the gain of the current
amplifiers (ADJUSTMENT #03 and ADJUSTMENT #04) are
recorded in a not volatile memory (eeprom) with a redundant
handling. In fact every adjustment is recorded in three eeprom
locations. If the values in these three locations are different in
between this alarm occurs.
- Remedy: It is necessary to send the controller to Zapi to execute the
maximum current regulation.

Zapi EPS-AC0 Specifications

General

Brand	Zapi
Model	EPS-AC0
Category	Controller
Language	English