COSMOS DRIVER SERIES 3000 - USE AND MAINTENANCE MANUAL
24
Excessive deviation of position
This error occurs when the position control is active
and the driver can not position the motor in the
required position. This error could be due to an
excessive load which can not be controlled or to a
position too distant from the present one.
The error is not stored in EEPROM in order to avoid
saturating the available positions, because the error
might be frequent.
25
I/O disabling
This error occurs when digital I/O are used and an
excessive current is required to one or more outputs. It
is recommended to check the absorption of the loads
applied to the outputs and/or the presence of short-
circuits to positive or negative.
If the error persists and no conditions beyond limits
occur,
it will be necessary to replace the driver
.
11.2 Sercos errors
11.2.1 Error codes
The Sercos error code is displayed on the FBS LEDs according to the criteria indicated in chapter
Here is a list of the errors.
Code
Description
00 / OK
No error
21
Communication error during the transition from phase 0 to phase 1. It may occur when no
address is associated to the device.
22
Communication error during the transition from phase 1 to phase 2.
23 e 24
Communication error during the transition from phase 2 to phase 3.
25
Communication error during the transition from phase 3 to phase 4.
28
Transition to a different phase not allowed.
29
Loss of 2 consecutive MST.
30
Loss of 2 consecutive MDT.
32
Loss of communication (optical signal interruption)
40
SERCON chip not found.
41
SERCON chip version not correct.
42
SERCON chip software reset error.
43
Reading/writing error of the SERCON chip DPRAM.
The codes equal to or higher than 40 refer to
hardware
problems in the control logic of the SERCOS protocol. As a
consequence, these errors cause the irretrievable drive error 23.
The remaining codes concern an error condition that occurred during SERCOS
communication
. They do not reveal
hardware problems in the driver, but a wrong information exchange with the master, an excessive attenuation of the
optical signal or simply a wrong setting of the communication parameters (address, speed, optical power, operating
mode…).
Please note that this type of errors takes a lower priority as compared to the “driver errors”. In case of simultaneous
presence of SERCOS error and driver error, the driver error will be signalled first.
11.2.2 Solution of communication problems
This paragraph describes some typical causes generating problems during SERCOS communication and how to discover
them.
Ver. 1.07
Pag. 97