AMETEK MX15 Series - Manual (Page 66)

User Manual – Rev M California Instruments
MX15 66
4 Front Panel Operation
4.1 Tour of the Front Panel
The MX Series with type P or type Pi have identical front panels although some of the keys found
on the front panel are only used by MX models with the Pi controller. If your unit is a P type
controller, these keys will act as don’t cares. This chapter provides information on operating the
MX with either controller type.
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.
4.1.1 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
4.1.2 System On/Off Circuit Breaker
The circuit breaker located on the left side of the front panel disconnects the low voltage supply
of the MX Source from the three phase Line input. This will remove power from the mains AC
input contactor and thus remove input power from the MX Series power source. As such, the
circuit breaker acts as an indirect power on/off switch for the MX Series unit. Note however that
an AC input power remains applied to the primary side of the input transformer.
When the input current rating of the MX Series AC power source is exceeded, the protective
fuses (XF1 through XF3) 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 MX30/2 and MX45/3 systems, each unit has its own on/off circuit breaker and set of
line input fuses.