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Three: local operation – AMETEK PLA-PLW User Manual

Page 55

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THREE: LOCAL OPERATION

INTRODUCTION

The programmable electronic load provides powerful control capabilities, which consist of four operating modes
CV/CC/CR/CP. To complement and enhance these features, an internal transient generator is provided to simulate
dynamic operations. The Transient operation provides three programmable features, Transient frequency, Transient duty
cycle, and Transient slew rate. These features provide the user with precise and efficient control of the powerful eLOAD
to handle the most diverse array of testing applications.

The programmable electronic load provides additional functions and capabilities, such as 32 point step programmable in
four user defined profiles, Cross Mode and Cross Range Operation and Short Operation. For battery testing, we provide
the “C” operand to help user in testing battery parameters without troublesome calculations.

The wide range of operating modes, accurate specifications, and advanced features provide the electronic load with
increased flexibility to work with different types of DUT and power source. Protection features such as Programmable
OVP, OCP, OPP, redundant OTP and hardware OP Protection are provided to protect the electronic load under different
load conditions. Please refer to the specifications to check the maximum input current, voltage, and power range in order
to safely test and obtain the best results.

Note: Protection Mode will shut off the Load Bank input, please take the necessary precaution.

VOLTAGE AND CURRENT METERING INFORMATION

The programmable electronic load uses a DAC with a guaranteed 14-bit resolution in the metering system and is active
once the unit is turn on. With sophisticated control circuits, the load can measure full-scale input voltages and currents
with Auto-Scaling capability. For example, when low voltages levels are applied, the display's decimal point will move
to accurately display the lower value. The same is true for the larger input values, the decimal will move to accurately
display the higher value. Refer to the Specifications for more programming and read back information.

OPERATING STATUS INFORMATION

All operating status information will be displayed when they become active. For example, when the Over-
voltage is tripped, the LCD module will display OVP.

SYMBOL TYPE

DESCRIPTIONS

-----------------------------------------------------
UNR

WARNING

unregulated

OVP

ALARM

over voltage protection

UVP

ALARM

under voltage protection

OCP

ALARM

over current protection

UCP

ALARM

under current protection

OPP

ALARM

over power protection

UPP

ALARM

under power protection

OTP

ALARM

over temperature protection

OSC

ALARM

oscillation

LV

WARNING

low voltage

OV

ALARM

over

voltage

OC

ALARM

over

current

OP

ALARM

over

power

RCP

ALARM

reverse current protection

RSF

ALARM

remote sense fault

UVL

WARNING

under voltage lockout

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