P Mj-X Tap Tracker - Siemens MJ-5 Installation And Operation Manual

P: MJ-X Tap Tracking:
Fine Adjustments and Troubleshooting
How Tap Tracking Works
The control panel has an algorithm built into it that senses different inputs, controls various
outputs, and monitors tap changes in order to maintain the status of the tap position on the
voltage regulator.
In short, tap tracking typically involves the control sensing that an operation has occurred (the
op counter has incremented) and then deciding whether it had been Raising or Lowering in
order to increase or decrease the tap position in memory. If the Op Count signal is not working
or being sensed properly whether it is due to a problem in the regulator tank, the control panel
hardware, or the sensing time in the algorithm, then the control panel will not be able to track
tap position. Likewise, if the control sees an operation count occur, but cannot determine if the
regulator had raised or lowered, then it will generate an error.
MJ4A/MJ5 completely overhauled the tap tracking algorithm, making substantial improvements.
The new tap tracking algorithm is robust and flexible, but there are still times when due to
normal wear and tear or slight differences within manufacturing tolerances of the regulators that
the control panel could have trouble tracking tap position. In this case, some slight adjustments
to the tap control timing can be made.
Mj5 adjust the Tap position automatically and continues to operate. In the event that the Tap
position does not match the position indicator, passing the Neutral position will sync the Tap
position with the Position indicator.
Tap Track Errors
There are two tap tracking alerts that may be generated on the MJ- control: (1) Tap Pos ???
and (2) Tap Track Err. The "Tap Pos ???" alert means that the Tap Position is unknown by the
control panel. To correct this problem, go to the <COUNTERS> menu and scroll up or down to
the "Tap =" screen. Press the Change key and use the Up/Down arrows to make the Tap
Position in memory match the position indicated by the regulator and then press the Save key.
There are 3 possible causes for this error In Mj4A: (1) "TapPosHold" under <ADV
CONFIGURE> is set to "Temp" and the control power was lost (set to "PERM" to correct; in
version 3.08 and above this menu item was removed and PERM is hard coded in the firmware);
(2) Tap Resync is turned ON under <ADV CONFIGURE> and the neutral signal status
conflicted with the Tap Position in memory for more than 10 seconds; (3) the control panel was
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