ALTUS Nexto NX3004 User Manual

4. Configuration
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Stop mode and the LED DG starts to blink 4x (as shown in Table 4-3). For these cases, to turn the
CPU back to normal Run, in addition to undo what caused the abnormal situation it is necessary to
perform a Reset Warm or Reset Cold. If a Reset Origin is done, you need to download the project so
that the CPU can return to normal Run. The Reset commands Warm, Cold and Reset Origin can be
done by MasterTool IEC XE in the Communication menu.
Hot Swap Enabled without Consistency in the Start
Allows the system to start working even if a module is in an abnormal bus situation (as described on
Table 4-2). The abnormal situations are reported via diagnostics during and after the start.
ATTENTION:
This option is advised for the system implementation phase as it allows the loading of new
applications and the power off without the presence of all configured modules.
How to do the Hot Swap
CAUTION:
Before performing the Hot Swap it is important to discharge any possible static energy
accumulated in the body. To do that, touch (with bare hands) on any metallic grounded
surface before handling the modules. Such procedure guaranties that the module static energy
limits are not exceeded.
ATTENTION:
It is recommended the hot swapping diagnostics monitoring in the application control developed by
the user in order to guarantee the value returned by the module is validated before being used.
The hot swap proceeding is described below:
 Unlock the module from the backplane rack, using the safety lock
 Take off the module, pulling firmly
 Insert the new module in the backplane rack
 Certify the safety lock is completely connected. If necessary, push the module harder towards to
the backplane rack
In case of output modules is convenient the points to be disconnected when in the changing process,
in order to reduce the generation of arcs in module connector. This must be done by switching off the
power supply or by forcing the output points using the software tools. If the load is small, there is no
need for disconnecting.
It is important to note that in the cases the CPU gets in Stop Mode and the LED DG starts to blink 4x
(according to Table 4-3), due to any abnormal bus situation (as described on Table 4-2), the output
modules have its points operation according to the module configuration when CPU toggles from
Run Mode to Stop Mode. In case of application startup, when the CPU enters Stop Mode without
having passed to the Run Mode, the output modules put their points in failure secure mode, in other
words, turn it off (0 Vdc).
Regarding the input modules, if one module is removed from energized backplane rack, the logic
point’s state will remain in the last value. In the case a connector is removed, the logic point’s state
will be put in a safe state, it means zero or high impedance.
ATTENTION:
Always proceed to the substitution of one module at a time for the CPU to update the modules state.
Below, Table 4-3 presents the bus conditions and the Nexto CPU LED DG operation state. For
further information regarding the diagnostics LEDs states, see Diagnostics via LED chapter.

ALTUS Nexto NX3004 Specifications

General

Brand	ALTUS
Model	Nexto NX3004
Category	Processor
Language	English