EED QI-POWER-485-300-LV User manual

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The QI-POWER-485-300-LV is the LOW VOLTAGE
version of the Single-phase Power meter QI-
POWER-485, able to measure the RMS AC or DC
Current and Voltage. On the RS485 Modbus are
available: Irms, Vrms, Watt, VAR, VA, Vpk, Ipk,
Frequency, Cosφ, Energy bidirectional and THD.
The device is fully congurable by RS485, DIN rail
mounting, 4 kV galvanic isolation for Voltage input.
POWER /ENERGY METER SINGLE PHASE AC/DC TRMS - RS485 MODBUS QI-POWER-485-300-LV
POWER /ENERGY METER SINGLE PHASE
AC/DC TRMS - RS485 MODBUS QI-POWER-485-300-LV
POWER SUPPLY 9...30 Vdc, protection against polarity reversal
and overtemperature.
ABSORPTION < 1,3 W
MEASUREMENT
Irms, Vrms, Watt, Var, Va, Vpk, Ipk, Frequency,
Cosφ
, Energy bidirectional, THD, min e MAX of each measure
TYPE OF MEASURE TRMS or DC
RANGE
Current: up to 300 A AC/DC
Voltage: up to 80 VAC or 100 VDC
ACCURACY @ 25°C up to 200Hz
Voltage, Current, Active Power: < 0,5% F.S.
Frequency: ± 0,1 Hz
Energy: ± 1% of reading
Vpeak, Ipeak: ± 5% F.S.
OUTPUT RS485 Modbus RTU
BAUDRATE From 1.200 a 115.200 baud
CREST FACTOR 1,4 (on current measurement)
WORKING FREQUENCY DC or 1...400 Hz
SAMPLING RATE 11k samples per second
INPUT IMPEDENCE 1 Mohm ± 1%
STANDARDS CE EN61000-6-4/2006 + A1 2011;
EN64000-6-2/2005; EN61010-1/2010
OVERVOLTAGE CATEGORY
Cat IV up to 100 V
INSULATION
3 kV on bare wire for Current measure.
4 kV for Voltage measure (reinforced insulation to power supply and
serial output)
PROTECTION INDEX IP20
TEMPERATURE COEFFICIENT < 200 ppm/°C
WORKING TEMPERATURE -15...+65°C
STORAGE TEMPERATURE -40°C... +85°C
HUMIDITY 10...90% not condensing
ALTITUDE Up to 2000 m s.l.m.
DIMENSIONS 89,1 x 99,25 x 28,5 mm (terminal excluded)
TERMINALS Removable terminals 3,5 mm, n°1 of 4 poles, n°2 of
2 poles
WEIGHT 370 g
FILLING Epoxy resin
BOX MATERIAL PBT, grey
LED N°1 yellow, power on xed, data communication blinking
DIP-SWITCH 2 poles
MOUNTING
Screw predisposition for vertical/horizontal mounting, DIN rail clips
(included) for vertical/horizontal mounting.
The images/schemes proposed are to be considered indicative and not binding
QUALITY ELECTRONIC DESIGN
Suitable for measurements with varying
frequencies (Wind, Hydro, Shipbuilding
Industries, Aviation). Telecom applications,
Refrigeration, Motors, OEM’s application.
Suitable for direct measurements between
inverter and motor.
Rev. 01
1
18 09 23
ENGLISH

QUALITY ELECTRONIC DESIGN
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18 09 23
ENGLISH
Using a serial link RS485 you can connect the QI-
POWER-485-300-LV with the interface program FACILE
QI- POWER-485. Using this software, allows you to set the
Modbus address, baud rate, delay, the TV and TA ratio,
modify the measuring lter type (from fastest response time
to better accuracy) and the frequency measurement on
current channel instead of voltage channel . You can
download the FACILE QI-POWER-485 free of charge from
our website https://qeed.it/en/software-drivers/.
Alternatively it is possible to program QI-POWER-485-300-
LV via RS485 Modbus RTU accesing the MODBUS
Register Map directly. (Available from the page of the
product or from https://qeed.it/en/documents-manuals/).
MOUNTING:
the Power Meter QI-POWER-485-300-LV can be mounted
(see photo on the right) horizontally or vertically using the
screws or by means of the provided DIN rail clips.
The protection oered by the device can
be compromised in case it is not used
according to the instructions.
REMARKS:
• Modbus connections: A+ and B- as per Modbus
RTU standards
• Modbus Register reference: with
reference to the logical address, for ex. 40010,
corresponds to physical address n°9 as per
Modbus RTU standard;
• Modbus functions supported: 3 (Read multiple
registers, max 100), 6 (Write single), 16 (Write
multiple);
• Any changes made by dip-switch
required to switch o the power supply or
sending reset command.
INSTRUCTION MANUAL QI-POWER-485-300-LV
INSTRUCTION MANUAL QI-POWER-485-300-LV
Energy storage data on ash memory: 4,5 years minimum,
45 years typical.
Measurement refresh: every 50 cycles or 1 second (the
faster), programmable by FACILE.
Minimum value of Current / Power measured (cut o):
congurable with FACILE1) tool in range [0…10200 mA] /
[0…10200 W]2) (see register map3 - register 40013 - for more
details).
1) Not allowed values entered with FACILE tool are automatically rounded to the
closed lower admissible value
2) [0…1,5 A] / [0…10 W] for products with FW prior to FW37
3) For FW prior FW37 refer to OLD_register_map, starting from FW37 refer to
NEW_register_map
BAUDRATE SETTING DIP 1 DIP 2
All setting from EEPROM 0 X
Set address 1 - 9600 1 0
Set sddress 1 - 38400 1 1
If you want to congure the device with FACILE set the dip-
switches to 0 (down). In order to congure the device via RS485
directly, set "DIP 1" to 1 (up) then the adjust "DIP 2" for baudrate
setting. Save the conguration using the COMMAND register.
Restore default dip switches setting (down 0) to use the
EEPROM conguration.
FACILE QI-POWER-485
The free interface program FACILE QI-POWER-485 is the
fastest way to congure the device. There is only one
conguration screen (see picture shown). The changes made to
the program act on the register of the QI-POWER-485-300-LV. To
restore the default conguration, press the button FACTORY
DEFAULT.
MEASURING MODE: allows selection between RMS or DC to
dene the sign, positive or negative, of measure.
ENERGY SAVING ON FLASH: it is possible to activate the
saving of the counters directly on the device’s ash memory.
FREQUENCY MEASURING CHANNEL: possibility to select
current or voltage channel to calculate the frequency.
TRANSFORMATION RATIO: in case of use of CT or VT, you
can dene the transformation ratio for the current input and
voltage input; default ratio is 1:1.
FILTER: allows to set a lter on measurement reading in order to
get faster response time (value 1) or a more stable and
accurate measurement (value 5 ). Default value is set to 2.
MIN CURRENT THRESHOLD (mA): Allow you to set the
minimum current value (Cut o). Under this value the device
measure zero. For more details, refer to box above.
MIN POWER THRESHOLD (W): Allow you to set the minimum
power value (Cut o). Under this value the device measure zero.
For more details, refer to box above.
CAUTION: magnetic elds of high intensity can vary the values measured by the
transformer. Avoid installation near permanent magnets, electromagnets or iron
masses that induces strong changes in the magnetic eld. If case of anomalies it is
recommend orienting or moving the transformer in a more suitable area.
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