Figure 4-20: Utility Menu - Ametek i Series User Manual

User Manual
4.2.11 UTILITY Menus
The UTILITY menu provides access to less frequently used setup items. There is no connection
between the various entries in the UTILITY menu other than there is no other logical place to put
them. The following entries can be found in the UTILITY menu:
Entry
GPIB/RS232 SETUP
VOLT/CURR CONTROL
66

Figure 4-20: UTILITY menu

Description
UTILITY 1
This entry provides access to the setup parameters for either
the IEEE-488 bus or the RS232C bus. All parameters are saved
in non-volatile memory so their is rarely a need to change these
values.
The voltage and current control menu can be used to select the
voltage range pair, the current limit method, the voltage sense
source, and the number of output phases (only in three phase
systems with Mode-iX option).
The standard available voltage range pairs are 135/270 and
150/300. The 135/270 pair gives higher current capability, and
the 150/300 gives higher voltage capability.
The two current limit choices are Constant Voltage and
Constant Current. Constant Voltage mode will maintain the set
voltage at the output until the load current exceeds the current
limit setting at which time the voltage will be dropped to zero.
This effectively shuts off the AC source output in case of an
overload condition. This mode has user programmable trip
delay which is located in the same menu.
Constant Current mode will maintain the load current at the
maximum level set by the current limit value, even if the
maximum power level is exceeded. This is done by reducing
the voltage as needed. As such, the voltage will be reduced
from the set level down to zero depending on the load
requirement. This mode is useful for starting up motor or
capacitor loads that may require a high inrush current. This
mode also has a user programmable trip delay.
Voltage sensing for regulation and measurement can be
selected for internal or external. External voltage sensing can
compensate for voltage drops caused by load cable impedance.
To achieve the best output regulation select external sense and
connect the voltage sense wires at the load.
The number of outputs in a multibox system with the Mode-iX
option can be switched between one for 15000 VA single phase,
and three for 5000 VA per phase, three phase. If the Mode-iX
option is not installed, the number of outputs is fixed.
i Series / iX Series