Display & Programming overview. HPL110A Unipower Version 4.0 Technical Information English Edition The HPL110A 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 function table above. The function of the keys is repeated if continuously activated. Parameters are stored in EEPROM. When no key has been activaed for about 5 seconds the display returns to the kW % position. Note An external current converter LED usage must always be mounted in the L3- The HPL110A has a number of LEDs, which phase for correct measurement. The are used to indicate to the user the condition of converter polarity is not important. the unit, i.e. above trip points or alarms. The table below shows the usage of the LEDs. Technical Specifications T H E C O N C E P T Electrical Power Supply The unipower HPL110A is a low cost See technical info on the unit. member of a family of Intelligent Power-Con- Also available: 3 x 120 VAC -> 3 x 575 VAC trol Units. The unit measures true power- Current Range consumption and shows the consumption as Internal: max, 8 Amp. a percentage of the selected power-range. External: N/1 or N/5 converter. Cos() Range: 0-1 The power-consumption (kW) is calculated Frequency Range: 45-65 Hz. from the following formula: Consumption: Power supplied from measuring circuit, 2VA P = 3 x U x I x Cos Relay spec.: 250 VAC/5 Amp. The primary function of the HPL110A lies in the supervision and control of machinery dri- Mechanical Housing: Noryl ven by 3-phased AC-motors. The HPL110A Mounting: Panel mounting. integrates a Max. and/or a Min. kW limit Protection Class: IP54 detector plus the support functions, including Operating Temperature Range:-15 - +50 C. a peak detector, which are necessary to Weight: Approximately 400g. Dimensions: D 112 x W 67 x H 67 mm. establish the efficient and compact supervi- sion or regulation of various types of CE mark to: machinery such as pumps, fans and conveyer EN61000-6-2, EN61000-6-3, EN61010-1 belts. The HPL110A has a built in current con- verter that works up to 8 Amps. Page 4 Page 1Generally. 7 and 8 and choose the 1A or 5A currrent range, Theoretically: The power measurement principle is based depending on the converter (N/1 or N/5). The Md = P2 x 60 / 2n, where upon integration of the power in every period measurement range in kW = 3 x U x I, where U Md: Torque where alarm should be given. (20 ms at 50Hz). Therefore the HPL110A also is the nominal voltage and I is the choosen P2: Corresponding shaft power. measures true power consumption on non current range or nominal primary current of the n: Revolutions in rev/min. sine shaped loads such as frequency inverters. external current converter. Ex. 1A and 400V gi- P1 = P2 + Po (Or from the efficiency curve of the ves a measurement range of 0.692 kW motor). Programming: corresponding to 100%. Limit % = 100 x P1/P, where The HPL110A is programmed by the use of P: Measurement range of the HPL110A. Figure 2 only three keys located on the front panel. The Functions The limits can be deactivated by setting the Min. Mode key is used to select one of the seven limit to 0 and the Max. limit to 101%. When a programmable parameters. When a parame- The figure below shows a typical AC-motor limit is deactivated Off is written on the dis- Hysteresis: ter is chosen the value may be altered by the power consumption curve (ex. pump) play. The figure to the left shows how possible Max. use of the arrow keys. immediately after power has been applied to Peak detectors: and Min. hysteresis bands are placed the motor. At the bottom of the figure a bar is Leave the motor running at normal load and relatively to the limits. The hysteresis band Measurement ranges: shown indicating the position of the relay (On/ read the peak values by activating the arrow always lies above a Min. limit and below a The HPL110A has a built-in current converter Off). keys in kW % - mode. Place the Max. limit Max. limit. Hysteresis is activated when an that works up to 8A. One of four internal current appropriately above the Max. peak value and alarm is generated and the external reset is ranges may be chosen: 1, 3, 5 or 8A. If the unit Choosing limits: the Min. limit appropriately below the min. peak active (Input S1, Auto reset mode). If Auto reset measures on loads where the current exceeds Deciding the limits can be done in two ways: value. The peak detectors may be reset is chosen and both limits are active, only the 8A an external current converter must be Theoretically or using the peak detectors in the seperately by pressing the relevant arrow key Max. hysteresis band is active, because the connected. This is done by connecting the HPL110A. and at the same time activate the Reset key. HPL110A only has one relay. secondary side of the converter to pin Ts: Start timer The programmable start timer (Ts) is used to Input S2: Blocking of alarms avoid alarms at motor start. The Ts delay function Like Ts blocks for alarms during start of the is activated after the power consumption motor, alarms can be ignored by setting S2 to reaches 5%. When Ts expires the limits, hys- Gnd. teresis and Tr become active. If the power Ex 1: If a brief overload is expected, a PLC consumption drops below 5%, the supervision output or the like may be used to block for a is switched off again. short period of time. Tr: Reaction timer Ex 2: If the Min. kW limit is used, a spare break The figure shows how the reaction timer (Tr) is switch from the Motor Switch must be activated after the limit is exceeded. Tr is used connected between the S2 input and Gnd, to avoid alarms, unless the limit has been otherwise an alarm is generated each time exceeded for a certain time. If Tr is set to 0, Tr the motor is switched off on purpose. equals the measurement interval of 20ms (16.7ms at 60Hz). DIP switch: Resetting alarms: The DIP switch is accessible through a hole Alarms may be reset by the reset key on the in the housing (see figure 3). front panel or by Input S1. SW.1 - No programming: The parameters may be read but nog altered, when SW.1 is On. Input S1: Auto or external reset SW.2: If this switch is on, no Min. alarm will be External reset: S1 is connected to Gnd by the given exceeding a Min. limit if kW % < 5% use of a switch or optocoupler output See fig. 2. before Tr expires. Auto reset: If S1 is connected to Gnd, Auto reset mode is enabled, which leads to reset of alarms by hysteresis. Page 2 Page 3