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User Manual AMETEK Programmable Power
BPS Series 58
5. Front Panel Operation
5.1 Tour of the Front Panel
The BPS Series controllers have identical front panels although some of the keys found on the front panel
are only used by certain BPS models. Unused keys will be “don’t cares” in their functions. This chapter
provides information on operating the BPS front panel controls.
Before operating the AC source using the front panel, it helps to understand the operation of the front
panel controls. Specifically, the operation of the knob, keyboard and the menu layout are covered in the
next few paragraphs.
5.1.1 Front Panel Controls and Indicators
The front panel can be divided in a small number of functional areas:

Mains circuit breaker

Status Indicator lights

Shuttle knob

LCD display

FUNCTION keypad

DATA ENTRY keypad
5.1.2 System On/Off Circuit Breaker
The circuit breaker located on the bottom left side of the front panel disconnects the low voltage supply of
the BPS Source from the three phase Line input. This will remove power from the mains AC input
contactor and thus remove input power from the BPS Series power source. As such, the circuit breaker
acts as an indirect power on/off switch for the BPS Series unit. Note however than AC input power
remains applied to the primary side of the input transformer.
When the input current rating of the BPS Series AC power source is exceeded, the protective fuses (F1
through F3 or F1 through F6 depending on model) will blow. In this case, power to the low voltage supply
may still remain through the front panel circuit breaker. In this case, the on/off circuit breaker should be
opened (power off) first followed by a complete disconnect of all ac input power through an installed main
circuit breaker.
Note that in multi-box BPS150 and BPS180 system configurations, each chassis has its own on/off circuit
breaker and set of line input fuses.