OM 402PWR

The OM 402 model series are 4 digit panel programmable instruments designed for maximum usefulness and user comfort while maintaining their fair price. Type OM 402PWR  is a multifunction AC voltmeter and ammmeter with extended functions for further analysis of electricity network. It measures voltage, current, active power, frequency, and through calculation also reactive power, apparent power and cos fi. The instrument is based on a single-chip microcontroller and a true RMS converter, which ensure good accuracy, stability and easy operation of the instrument.

• 4 digit programmable projection

• range: 0…1/2,5/5 A; 0…60/150/300 mV; 0…10/120/250/450 V

• digital filters, tare, linearization

• size of DIN 96 x 48 mm

• power supply 10…30 V AC/DC or 80…250 V AC/DC

• comparators

• data output

• analog output

• measured data record

• three-color display - 20 mm
   

  Input

  AC

  Range

  partially fixed, according to order
  

  0…60 mV

  21 kOhm

  Input 1 - I

  0…150 mV

  21 kOhm

  Input 1 - I

  0…300 mV

  1,2 kOhm

  Input 1 - I

  0…1 A

  < 150 mV

  Input 1 - I

  0…2,5 A

  < 150 mV

  Input 1 - I

  0…5 A

  < 150 mV

  Input 1 - I

  0…10 V

  150 kOhm

  Input 2 - U

  0…120 V

  930 kOhm

  Input 3 - U

  0…250 V

  730 kOhm

  Input 2 - U

  0…450 V

  930 kOhm

  Input 3 - U

  Input frequency

  0…400 Hz
  for amplitude from 8 V

  Measured variables

  Voltage (Vrms)
  Current (Irms)
  Real power (P-W)
  Frequency (Hz)
  with calculation
  Projection

  Display range

  -99999…999999, single-coloured 14-segment LED
  -999…9999, 3-coloured 7-segment LED

  Display height

  14 mm, 20 mm

  Display colour

  red, green, red/green/orange

  Signalizing LED

  1, 2, 3, 4	Limits L1, L2, L3, L4 (red)
  T	Tare (green)
  M	Min./Max. value (green)
  I, U, P, F	Channels current, voltage, power, frequency (orange)

  Description

  the last two digits of the display can be used to display measured variables (only 14 mm display)

  Decimal point

  menu adjustable - fixed or floating

  Display brightness

  menu adjustable

  Displayed values

  Kan I	Value from channel I
  Fil. I	Value from channel I after digital filter adjustment
  Kan U	Value from channel U
  Fil. U	Value from channel U after digital filter adjustment
  Kan P	Value from channel P
  Fil. P	Value from channel P after digital filter adjustment
  Kan F	Value from channel F
  Fil. F	Value from channel F after digital filter adjustment
  COS 02	Value from secondary channel ''cos fi''
  Mat. Fn.	Value of mathematical function
  Max.	Maximum value
  Min.	Minimum value

  Settings

  Control

  The device is controlled and set by five buttons on the front panel
  Selected functions can also be controlled via external inputs

  Menu

  LIGHT	contains only items necessary for basic device settings with password access
  PROFI	Full device settings with password access
  USER	User menu of any item, selected from LIGHT/PROFI. Access without password.

  Optional functions

  Buttons ''Left'', ''Up'', ''Down'', ''Enter'' can be assigned additional optional features
  

  ZAKAZ	button has no function
  NUL. M.M.	Resetting Min/Max vaslues
  NUL. TA.	Tare reset
  MENU	Direct access to the selected menu item
  DOC. H.	Temporary projection of selected values
  TARA	Activating function Tare
  ULOZ	Starting recording of the measured data into device memory
  NUL. PA.	Resetting memory of the measured data

  OM Link

  Company communication interface for operation, setting and update of device firmware
  OM Link program is also designed for visualization and filing of meas. values from more instruments
  Instrument accuracy and functionality

  Temperature coefficient

  50 ppm/°C

  Accuracy

  0,3 % of range + 1 digit
  (for projection 9999 and 5 measur./s)

  Rate

  0,5/1,2/2,5/5 measur./s

  Overload capacity

  2x; 10x (t < 30 ms) - not for > 250 V and 5 A

  Linearization

  linear interpolation in 50 points (only via OM Link)

  Digital filters

  arithmetic mean	from 2…100 measurements
  floating mean	from 2…30 measurements
  exponential mean	from 2…100 measurements
  rounding	setting projection step for display

  Functions

  Tare	designed to reset display on non-zero input signal
  Min/max value	registration of min./max. value achieved during measurement
  Peak value	display shows only max. or min. values

  Math. functions

  polynom, 1/x, logarithm, exponential, power, root, sin x

  Data record

  Measured data recording into the memory
  

  RTC	period - 1 s…1 day, time-date-display value, < 266k data, 15 ppm/°C

  Not available in combination with with the data output MODBUS

  Watch-dog

  reset after 400 ms

  Calibration

  at 25°C and 40 % r.h.
  Comparators

  Type

  Digital, menu adjustable, contact connect. < 30 ms

  Mode

  Hysteresis	switch. point, hysteresis band ''Mez ± 1/2 Hys.'' and time (0 ... 99.9 s) determ. switching delay
  From-To	output interval ON and OFF
  Dose	period, its multiples and time (0 ... 99.9 s), during which the output is active

  Output

  1x relay, switch-over contact (250 VAC/30 VDC, 3 A)
  2x relay, switch-over contact (250 VAC/30 VDC, 3 A)
  1x relay, switch on contact (250 VAC/30 VDC, 3A)
  2x relay, switch on contact (250 VAC/30 VDC, 3 A)
  2x bistable relay (250 VAC/30 VDC, 3A)
  3x relay, 2x switch on + 1x switch-over contact (250 VAC/30 VDC, 3A)
  4x relay, 2x switch on + 2x switch-over contact (250 VAC/30 VDC, 3A)
  2x open collector (30 VDC/100 mA)
  4x open collector (30 VDC/100 mA)
  2x open collector (30 VDC/100 mA) + 2x relay, CO contact (250 VAC/30 VDC, 3 A)
  2x SSR (250 VAC/1 A)
  Data outputs

  Protocol

  ASCII, MESSBUS, MODBUS - RTU, PROFIBUS DP

  Data format

  8 bits + no parity + 1 stop bit (ASCII)
  7 bits + even parity + 1 stop bit (Messbus)

  Rate

  600…230 400 Baud
  0,0096…12 MBaud (PROFIBUS)

  RS 232

  isolated

  RS 485

  isolated, addressing max. 31 instruments
  Analogue outputs

  Type

  Isolated, programmable with a 16-bit D / A converter, type and range are menu selectable

  Temperature coefficient

  15 ppm/°C

  Nonlinearity

  ±0,1 % of range

  Rate

  response to value change < 1 ms

  Ranges

  0...2 V, 0...5 V, 0...10 V, ±10 V, 0...5 mA, 0...20 mA, 4...20 mA

  Compensation

  600 Ohm/12 V, 1 000 Ohm/24 V

  Error state

  at range of 4...20mA
  error message indication (<3.0 mA)
  Detection of current loop interruption
  Power supply

  Power supply

  10…30 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
  80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated

  Current draw

  < 9,4 W/9,2 VA

  Power supply protection

  Power supply is protected by a fuse inside the instrument
  Operating conditions

  Connection

  connector terminal board, cable section < 1,5/2,5 mm2

  Operating temperature

  -20°…60°C

  Storage temperature

  -20°…80°C

  Protection class

  IP64 (front panel only)

  El. safety

  EN 61010-1, A2

  Dielectric strength

  4 kVAC within 1 min. between pow. supply and input
  4 kVAC within 1 min. between pow. supply and data/anal. output
  4 kVAC within 1 min. between input and relay output
  2,5 kVAC within 1 min.between input and data/anal. output

  Insulation resistance

  for polution degree II, measuring cat. III.
  

  power supply	670 V (ZI), 300 V (Di)*
  input, output, PN	300 V (ZI), 150 V (Di)*

  EMC

  EN 61326-1

  Seismic capacity

  IEC 980: 1993, par.6
  Mechanical properties

  Material

  Noryl GFN2 SE1, non-inflammable UL 94 V-I

  Dimensions

  96 x 48 x 120 mm (w x h x d)

  Panel cutout

  90,5 x 45 mm (w x h)