APAR AR911, Инструкция пользователя

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3
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1.
PRINCIPLES OF SAFE USE
before you start to use the device, become familiar with the present instructions;
make sure that all wires are connected properly to the tested item;
wire connections must be modified only with voltage switched off; ensure proper operating conditions compliant
with the technical specification of the device (signal level, humidity, temperature, etc.; see chapter 4);
The device is designed so as to ensure an appropriate level of immunity to most interferences that may occur in
industrial environments. In environments of unknown level of interferences, it is recommended to implement the
following measures so as to prevent potential interference with the operation of the device:
avoid running signal cables in the direct vicinity of and parallel to power and supply cables;
it is recommended to use twisted pair signal cables;
avoid proximity of remotely controlled devices, electromagnetic meters, high power loads, loads with phase or
group power control, and other devices that cause high impulse disturbances;
use shielded signal cables, whereby the earthing of the shield should be single-point and located as close to
the device as possible;
ground or zero metal rails on which rail-mounted devices are installed.
Make sure to remove the protective film from the LCD display before the first use of the device.
2. GENERAL CHARACTERISTICS OF THE SETTER
the device is intended for setting or measuring standard current and voltage signals;
analog output/input (setter or measuring device):
−
current 0/4÷20 mA (active output, may not be supplied in a two-wire current loop)
−
voltage 0/2÷10 V
the output enables controlling or testing of equipment with current or voltage inputs (proportional valves,
actuators, inverters, motors, etc.)
soft start/stop (ramping) or triangular wave generator released and stopped manually
programmable configuration parameters (range of indication, range and increment of output signal changes,
soft start/stop options, time of automatic activation of the instrument, zero calibration, and amplification of
the measured or set signal, etc.)
quick and simple readout of:
−
the real value of the output or measured signal (mA, V, or calculated as programmable indication range);
−
type of set signal;
−
operating direction;
diagnostic messages presented on the display that facilitate detection of defects in the tested system, e.g.
short circuits in the voltage signal circuit, breaks in the current loop circuit
possible password protection of access to configuration parameters
ergonomic manual enclosure with rubberized side grips
simple and reliable laboratory banana connectors
a clearly visible LCD display (without background illumination) and a functional keyboard
power supply from two AA (R6) (rechargeable) batteries
automatic shutdown after a preset idle time
integrated battery charging system (power supply provided)
automatic power supply cutoff at low battery charging level
high resistance to interferences present in industrial environments
available accessories:
−
power supply for battery charging