Etel DSC Series User Manual

ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05 Chapter C: System functions
Operation & Software Manual
Direct Drives & Systems 91
12.4 Precaution parameters - IMPORTANT
The parameters K described below are set only once. Generally, they are set automatically by ETEL Tools
during the Drive setting process (refer to §8.
).
These parameters are added up to the existing material protections (fuses, mechanical end stops, etc) and
protect the controller, the machine, its motor and its compounds. There are three types of protection
parameters: 1
st
: those which introduce movement limits, 2
nd
: those which protect the motor from an
overcurrent, 3
rd
: the general protection parameters which control the interactions between the motor and the
rest of the machine.
12.4.1 Movements limits
Parameters K34 and K35 limit the linear motors movements. If the value of a position to reach programmed
with the POS command is higher than the one contained in parameter K35, the programmed position will
automatically be brought back to parameter K35. And it is the same with a value smaller than parameter K34.
In both cases the movement takes place with the limit value and the controller does not display an error
message. Parameter K36 enables or disables the activation of the protection of parameters K34 and K 35; an
error may appear (depends on the value of parameter K36) if the motor goes over the parameters K34 and K35.
Parameters K30 and K31 switch automatically off the power of the motor in case of position error or in case
of overspeed of the values contained in parameters K30 and K31. In that case the controller switches in error
mode, lights a red error LED and displays a message to identify the error.
Remark: If K145 = 0 or 1, parameters K41, K42, K43, K44 and K47 are taken into account (refer to §12.9
for more information).
If K145 = 2 or 3, parameters K41, K42, K47 and K58 are taken into account (refer to §12.9
for
more information).
Available on DSC2P DSC2V DSCDP DSCDL DSCDM
Valid for K Name Value Bit # Comment Units
All
motors
K30
Motor position
tracking error limit
-
When the tracking error is > K30, the controller generates the TRACKING
ERROR error (M64=23)
[dpi]
[rdpi]
K31
Motor real speed
limit.
-
When the speed is > K31, the controller generates an OVER SPEED
error (M64=24)
[dsi]
[rdsi]
K36
Motor position
limitation mode
1
2
4
0
1
2
Use of parameters K34 and K35 as limit on the target the motor can
reach. These limits are tested on every sti only if a homing has been
previously done. Used with K61=1
Use of parameters K34 and K35 as limit on the actual position of the
motor. If the motor reaches these limits, it generates an OUT OF
STROKE error (M64=65). These limits are tested on every sti only if a
homing has been previously done. Used for all values of parameter K61
Use of parameters K34 and K35 as limit on the target to generate an REF
OUT OFSTROKE error (M64=66) when the movement starts. These
limits are tested only if a homing has been previously done. Used with
K61=1. This error is generated when one of the following command is
executed: POS=, POS+=, POS-=, STE=, STE+=, STE-=, STA= and STI=
-
K34
Minimum software
position limit.
-
Depending on the values of K36 and K61 parameters, the motor cannot
go lower than parameter K34
[upi]
[rupi]
K35
Maximum software
position limit
-
Depending on the values of K36 and K61 parameters, the motor cannot
go higher than parameter K35
[upi]
[rupi]
K145
Search limit stroke
mode selection
(SLS mode)
0
1
2
3
SLS on mechanical end stop, positive movement.
SLS on mechanical end stop, negative movement.
SLS on limit switch, with positive movement
SLS on limit switch, with negative movement
-
Rotary
motors
only
K27
Maximum
position value
--
Defines the maximum position range limit (K27). Depth 0 for primary
encoder and depth 1 for secondary encoder (refer also to §12.10.4.2
)
[upi]
[rupi]

Etel DSC Series Specifications

General

Brand	Etel
Model	DSC Series
Category	Controller
Language	English