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mPower 300 Series (Rev G)
5.5.4.2 Resolution and sample rate
The analog interface is internally sampled and processed by a digital microcontroller. This causes a limited resolution of
analog steps. The resolution is the same for set values (VSEL etc.) and actual values (VMON/CMON) and is 26214. Due to
tolerances, the truly achievable resolution can be slightly lower.
There is furthermore a max. sample rate of 500 Hz. This means the system can acquire analog set values and states on
digital pins 500 times per second.
5.5.4.3 Acknowledging alarms
Hardware alarms (see
) are always indicated in the front display and some of them are
also reported as signal on the analog interface socket (see
), for example the overvoltage alarm (OV), which is
considered as critical.
In case of a hardware alarm occurring during remote control via analog interface, the DC output will be switched off the
same way as in manual control. While alarms OT and OV can be monitored via the corresponding pins of the interface,
other alarms can’t. Those could only be monitored and detected via the actual values of voltage and current being all zero
contrary to the set values.
The hardware alarms OV, OC and OP have to be acknowledged after any of them occurred, either by the user of the
system or by the controlling unit. This can be done with pin REM-SB switching the DC output off and on again, means a
HIGH-LOW-HIGH edge (min. 50ms for LOW), when using the default level setting for this pin.
