57
2.3.4.5 Line Slow Detection Parameters
This option allows user to change various detection and warning levels for input AC voltages, qualified and unqualified
values, Transfer & Retransfer set points for going in & out of Battery mode / Boost / Buck modes. The factory set default
values concur with those specified by major DOTs (Department of Transportations). See Figure 45 for a description of
each parameter.
Electrical equipment is designed to operate at maximum efficiency at a specific standard supply voltage. Buck and
boost is an ideal solution when the line voltage is consistently higher or lower than nominal. The transformer can buck
(lower) or boost (raise) the supply voltage without having to go onto battery or involve any other active TRTC UPS
board level components. The TRTC series input transformer has a second tap off the primary winding. When
activated, the transformer will automatically switch to the secondary tap to buck or boost the voltage output 10%,
thereby keeping the output within an acceptable range.
CAUTION:
Improperly set parameter values can cause
permanent damage
to the unit. Changes
should only be made by Manufacturer trained personnel.
Contact Manufacturer before making any adjustment.
Note
: Parameter values are interdependent, changing one value can affect range and permissible
value in another field. This feature is to protect the user from entering conflicting values.
Parameter Change Procedure
1.
Go to the Menu 4.
2. “Enter Password” appears (the factory set password is 1111), Type the password and press
Enter
.
If the wrong password is typed, the screen displays “Error in entering data… please try again.” Type the correct
password.
3. The Parameter Change Screen appears (Figure 44). Type the new value that is within the range of
acceptable parameter limits and press
Enter
.
The screen returns to the Line Slow Detection Screen. For example:
Name of
Parameter
High Voltage TLV [287]
Enter new value. (253..287)
Current
Parameter Status
Prompt
>
Acceptable
Parameter
Limits
Figure 44
Parameter Change Screen
(Slow Detect High Limit Screen Shown)
For a tutorial on how to use the menu screen, see Section 2.3.5