MYERS MP Series, Installation, Operation & Maintenance Manual

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2.2.16 Adjustments
The MP2000E does not have any hardware adjustments. All of the adjustments are
controlled through software parameters that are set either through the front keypad or the
RS232 port.
1. Contrast Adjustment
– The LCD display has a contrast adjustment that is set by
holding the ESC button on the front panel and depressing the ENTER button.
Adjust the contrast by using the Up/Down arrow keys. Pressing the ENTER
button again will save the current contrast setting. This function is not available
through the RS232 port.
2. Line Detection Adjustments
– Line detection settings are used for two purposes.
The first purpose is to allow the BBS to transfer to and from the battery. The
second purpose is to Buck or Boost the input to maintain output voltage in
tolerance, in the event that the input voltage drops or rises. There are four
adjustments that set up the transfer to battery function and four adjustments
that set up the Buck and Boost function. These adjustments are made through
the keypad by entering the Settings Menu, then the Line Detection Menu,
entering the correct password, and then selecting the parameter listed below for
adjustment. The same adjustments can be made in the RS232 Menu by entering
the parameter value below from the Main Menu screen and then entering the
proper password.
Note: Certain line detection parameters are dependant on other line detection
parameters. This inter-relationship is provided to minimize incorrectly setting
parameters. A brief explanation:
Transfer to Battery Adjustments
Parameter 40
– Slow Detect Hi Lmt – When the input utility line exceeds this
voltage setting the BBS will transfer to Battery Mode from Line Mode or Buck
Mode.
Parameter 42
– Slow Detect Hi Hyst – When the input utility line drops below this
voltage setting the BBS will transfer to Line Mode or Buck Mode from Battery
Mode.
Parameter 41
– Slow Detect Low Lmt – When the input utility line drops below
this voltage setting the BBS will transfer to Battery Mode from Line Mode or
Boost Mode.
Parameter 43
– Slow Detect Low Hyst – When the input utility line exceeds this
voltage setting the BBS will transfer to Line Mode or Boost Mode from Battery
Mode.
The Buck and Boost adjustments require the Buck or Boost feature to be enabled.
Buck Adjustments
Parameter 46
– Slow Detect Buck High – When the input utility line exceeds this
voltage setting the BBS will transfer top Buck Mode when enabled. Parameter
47
– Slow Detect Buck Low – When the input utility line drops below this voltage
setting the BBS will transfer to Line Mode from Buck
Mode.
Boost Adjustments
Parameter 45
– Slow Detect Boost Low – When the input utility line drops below this
voltage setting the BBS will enable Boost Mode.