Delta RMC101 User Manual Page 816

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RMC100 and RMCWin User Manual
C-46
and Encoder Error/Fault Input. This is done because the position feedback is not dependable and
closed loop control cannot be maintained.
Hard Stop
If the axis is in closed loop, the fault will trigger the drive output to go immediately to 0 mV on
analog outputs and no steps for stepper outputs, and the axis will be placed in open loop mode. If
the axis is in Open Loop, the drive will not be affected. If there is an event sequence on the axis,
it will stop executing. The Halt and Open Loop status bit will also be set in the Status word.
Disable Drive
The fault will be handled as in a Hard Stop, but additionally the Amp Enable output on QUAD and
STEP will be opened. Use the Amp Enable (a) command to close the output again. This option is
only available for faults on QUAD and STEP axes.
To view or change the Auto Stop parameter value, open the Auto Stop popup editor in RMCWin
using one of the methods described in Using Popup Editors. Select the desired action for each
fault type and click OK. Changes to this parameter do not take effect until you issue a Set
Parameters (P) command.
Manual Parameter Entry
This parameter can also be edited manually, but this is discouraged since it is much easier to use
the popup editor. You can enter hexadecimal numbers by typing a leading 0x, as in 0x1FE0.
Each of the eight faults listed above has two bits assigned to it, labeled S and H in the table
below:
Bit
Description
Bit
Description
15
Fault 7 - Bit
S
7
Fault 7 - Bit H
14
Fault 6 - Bit
S
6
Fault 6 - Bit H
13
Fault 5 - Bit
S
5
Fault 5 - Bit H
12
Fault 4 - Bit
S
4
Fault 4 - Bit H
11
Fault 3 - Bit
S
3
Fault 3 - Bit H
10
Fault 2 - Bit
S
2
Fault 2 - Bit H
9
Fault 1 - Bit
S
1
Fault 1 - Bit H
8
Fault 0 - Bit
S
0
Fault 0 - Bit H
For each fault, the two bits in the Auto Stop parameter define the action as follows:
Bit
H
Bit
S
Description
0
0
Status Only
0
1
Soft Stop
1
0
Hard Stop
1
1
Disable Drive
If you select Status Only for a fault that cannot use that action, then the axis will use a Soft Stop
action for that fault. Similarly, if you select Disable Drive for a fault on an axis that does not have
an Amp Enable output, the axis will use the Hard Stop action for the fault.
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