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CURRENT TRANSFORMER
AC/DC TRMS - RS485 MODBUS
POWER SUPPLY
12...30 Vdc, protection against polarity
reversal and overtemperature
ABSORPTION
Max 20 mA
TYPE OF MEASURE
RMS (monopolar) or DC
RANGE
50 A AC/DC, bipolar for DC measurement, RS485
customize setting
ACCURACY
0,5% F.S.
RISOLUTION
12 bit
OUTPUT
digital output ( max 30 Vdc, max 50 mA) clean
contact and RS485
CREST FACTOR
1,4
HYSTERESIS
0,2 F.S.
BAND WIDTH
at -3 dB DC or 20...2000 Hz
RESPONSE TIME
1000 ms on analog output, 30 ms on serial
output
OVERLOAD
2 kA pulse, 50 A continuous
STANDARDS CE
EN61000-6-4/2006 + A1 2011; EN61010-1/2010
ISOLATION
3 kV son bare wire
PROTECTION INDEX
IP20
TEMPERATURE COEFFICIENT
WORKING TEMPERATURE
STORAGE TEMPERATURE
HUMIDITY
10...90% not condensing
ALTITUDE
up to 2000 m s.l.m.
DIMENSIONS
46,1 x 63 x 26,4 mm (terminal excluded)
TERMINALS
Removable terminals 3,5 mm, 5 poles
WEIGHT
72 g
FILLING
Epoxy resins
BOX MATERIAL
PBT, grey
LED
N°1 yellow, power on fixed, data communication blinking
DIP-SWITCH
8 poles
MOUNTING
Screw predisposition for vertical/horizontal mounting,
DIN rail clips (included) for vertical/horizontal mounting
LEGENDA SIMBOLI DELLA TAMPOGRAFIA
General warning
Insertion of the cable
< 200 ppm/°C
-15...+65°C
-40°C... +85°C
QI-50-DO-485
The QI-50-DO-485 is a direct and alternating current
transformer, galvanically isolated from the measuring
circuit. The device, however, can measure the
continuous and alternating RMS component. The
transformer is equipped with RS485 Modbus serial
output and a clean contact digital output. Through
the serial port it is possible to freely configure
the alarm threshold and assign the Modbus address.
ENGLISH
1
05 2021
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Summary of Contents for EED QI-50-DO-485
- Page 1 CURRENT TRANSFORMER QI-50-DO-485 AC/DC TRMS - RS485 MODBUS The QI-50-DO-485 is a direct and alternating current POWER SUPPLY 12...30 Vdc, protection against polarity transformer, galvanically isolated from the measuring reversal and overtemperature circuit. The device, however, can measure the ABSORPTION Max 20 mA continuous and alternating RMS component.
- Page 2 Through the RS485-USB serial connection it is possible to connect to the QI-50-DO-485 via the EASY Interface Program QI-50-DO-485. Dip-switches can configure the QI-50-DO-485 to set the bottom scale to 25 A or 50 A, monopolar (RMS) or bipolar (average value), Modbus address (see register map below) up to a maximum of 15 addresses. Use in bipolar mode is intended for DIRECT current measurements.
- Page 3 ALARM ON DIGITAL OUTPUT QI-50-DO-485 Rising: Normally open contact Falling: Normally closed contact On Window: contact closed between thresolds On Window: contact closed outside thresolds Disposal of Electrical & Electronic Equipment (Applicable throughout the European Union and other European countries with separate This document is the property of DEM S.p.A.
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