Display & Programming overview.
Unipower
HPL110
Version 4.0
Technical Information
English Edition
Technical Specifications
Electrical
The HPL110 is programmed by the use of only three keys located at the front panel. See
paragraph about programming on page 2. The parameters and their programming ranges are
listed in the table above. Parameters are stored in EEPROM. When no key has been activated for
about 5 seconds the display returns to the kW[%] position. Note that the function of the keys is
repeated if continuously activated.
LED usage:
The HPL110 has a number of LED’s , which
are used to indicated to the user the condition
of the unit, i.e. above trip points or alarms. The
table below shows the usage of the LED’s.
Note! An external current converter (if present) must always be mounted in
the L3-phase for correct measurement. The polarity is not important.
Voltage Range
See Technical info on the unit
Also availible:
3 x 120 VAC -> 3 x 575 VAC
Current Range
Internal: max. 8 Amp.
External: N/1 or N/5 converter.
ϕ Range:: 0-1
Cosϕ
Frequency Range: 45-65 Hz.
Consumption.
Supply = measuring voltage, 2 VA.
Mechanical
Housing
Makrolon 8020 (30% GV), UL94V-1
(house).
Makrolon 2800, UL94V-2 (connector +
front).
Mounting
Snap-on construction for 35mm DIN
rail mounting or panel mounting.
Protection Class
IP40 (house).
IP20 (connector).
Temperature Range: -15 - +50 oC
Weight: Approx. 400g.
Dimensions: D110 x W56 x H75 mm.
CE-mark to:
EN61000-6-2, EN61000-6-3, EN61010-1
UL certified:
UL 508 - Industrial Control Equipment
Page 4
THE CONCEPT
The Unipower HPL110 is a „low-cost“
member of a family of „Intelligent PowerControl Units“. The unit measures true
power-consumtption and shows the
consumption as a percentage of the
selected power-range. The powerconsumption (kW) is calculated from the
following formula:
P = √3 x U x I x Cosϕ
The primary function of the HPL110 lies in
the supervision and control of machinery
driven by 3-phased AC-motors. The
HPL110 integrates a Max. and/or a Min. kW
limit detector plus the support functions
necessary to establish the efficient and
compact supervision or regulation of
various types of machinery such as pumps,
ventilators and conveyer belts. The HPL110
has a built in current converter that works
up to 8 Amp.
Page 1
Generally.
The power measurement principle is based
upon integration of the power in every period
(20 ms at 50Hz). Therefore the HPL110 also
measures true power consumption on non sine
shaped loads such as frequency inverters.
Programming:
The HPL110 is programmed by the use of only
three keys located on the front panel. The
„Mode“ key is used to select one of the seven
programmable parameters. When a parameter
is chosen the value may be altered by the use
of the arrow keys.
Measurement ranges:
The HPL110 has a built-in current converter
that works up to 8A. One of four internal current
ranges may be chosen: 1, 3, 5 or 8A. If the unit
measures on loads where the current exceeds
8A an external current converter must be
connected. This is done by connecting the
secondary side of the converter to pin
7 and 8 and choose the 1A or 5A currrent range,
depending on the converter (N/1 or N/5). The
measurement range in kW = √3 x U x I, where U
is the nominal voltage and I is the choosen
current range or nominal primary current of the
external current converter. Ex. 1A and 400V gives a measurement range of 0.692 kW
corresponding to 100%.
Functions
The figure below shows a typical AC-motor
power consumption curve (ex. pump)
immediately after power has been applied to
the motor. At the bottom of the figure a bar is
shown indicating the position of the relay (On/
Off).
Choosing limits:
Deciding the limits can be done in two ways:
Theoretically or using the peak detectors in the
HPL110.
Theoretically:
Md = P2 x 60 / 2πn, where
Md: Torque where alarm should be given.
P2: Corresponding shaft power.
n: Revolutions in rev/min.
P1 = P2 + Po (Or from the efficiency curve of the
motor).
Limit [%]= 100 x P1/P, where
P: Measurement range of the HPL110.
The limits can be deactivated by setting the Min
limit to 0 and the Max limit to 101%. When a
limit is deactivated „Off“ is written on the display.
Peak detectors:
Leave the motor running at normal load and
read the peak values by activating the arrow
keys in kW[%] - mode. Place the Max limit
appropriately above the Max peak value and
the Min limit appropriately below the min peak
value. The peak detectors may be reset
seperately by pressing the relevant arrow key
and at the same time activate the Reset key.
Ts: Start timer
The programmable start timer (Ts) is used to
avoid alarms at motor start. The Ts delay function
is activated after the power consumption
reaches 5%. When Ts expires the limits, hysteresis and Tr become active. If the power
consumption drops below 5%, the supervision
is switched off again.
Tr: Reaction timer
The figure shows how the reaction timer (Tr) is
activated after the limit is exceeded. Tr is used
to avoid alarms, unless the limit has been
exceeded for a certain time. If Tr is set to 0, Tr
equals the measurement interval of 20ms
(16.7ms at 60Hz).
Resetting alarms:
Alarms may be reset by the reset key on the
front panel or by Input S1.
Input S1: Auto or external reset
External reset: S1 is connected to Gnd by the
use of a switch or optocoupler output See fig. 2.
Auto reset: If S1 is connected to Gnd, Auto
reset mode is enabled, which leads to reset of
alarms by hysteresis.
Page 2
Figur 2
Hysteresis:
The figure to the left shows how possible Max
and Min hysteresis bands are placed relatively
to the limits. The hysteresis band always lies
above a Min limit and below a Max limit. Hysteresis is activated when an alarm is generated
and the external reset is active (Input S1, Auto
reset mode). If Auto reset is chosen and both
limits are active, only the Max hysteresis band
is active, because the HPL110 only has one
relay.
Input S2: Blocking of alarms
Like Ts blocks for alarms during start of the
motor, alarms can be ignored by setting S2 to
Gnd.
Ex 1: If a brief overload is expected, a PLC
output or the like may be used to block for a
short period of time.
Ex 2: If the Min. kW limit is used, a spare break
switch from the Motor Switch must be connected
between the S2 input and Gnd, otherwise an
alarm is generated each time the motor is
switched off on purpose.
DIP switch:
The DIP switch is placed under the front plate
(see figure 3).
SW1-No programming: The parameters may be
read but not altered, when Sw 1 is On.
SW2: If this switch is on, no Min alarm will be
given exceeding a Min limit if kW[%] < 5% before
Tr expires.
Page 3
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