Introduction This document describes the user manual and the functional specifications of the VPLog-i-R current sensor. Glossary Alternating current Crest Factor = Peek_current/RMS_current Direct current Ground Hertz IDEP/CN8 Combined Nomenclature code milli Ampère Parts pro million; 1ppm=0,0001%=1/1000000 power true RMS true Root Mean Square, Urms = sqrt(mean(U²))
Safety Regulations Warnings, cautions and notes within this manual will be used as follows: WARNING: Used to denote a danger to personnel of serious injury and/or death. The warning will be preceded by the caption WARNING and the detail of any warning will be in bold and uppercase. CAUTION: Used to denote a possibility of damage to material or equipment but not a danger to personnel.
Instrument Description The VPLog-i-R AC current sensor, based on a Rogowski coil, that measures AC currents up to 1600A true-rms on a single phase power cable. The sensor has a modbus interface for communication. The sensor has an indication LED. This blinks when modbus communication is ongoing.
Connection to the cable To install the VPLog-i-R sensor, wrap the measurement coil around the single phase power cable (L1, L2, L3 or N). Then click the plug into the clamp. The coil has to make a closed loop around the power cable.
(E.G DISCONNECT POWER, WEAR SAFETY GLASSES, RUBBER GLOVES AND ADEQUATE CLOTHES, ETC) Power-On/Off The VPLog-i-R sensor has no power on/off switch. Applying power to the sensor starts its internal power-up sequence. Switch the sensor off by removing its power supply. Connection...
Page 9
When addressing registers, the command contains the address minus 1, for instance registers 1..3 are addressed as 0..2. The VPLog-i-R also supports the modbus scan protocol. This allows to change the modbus settings and to request extra information from the module.
I RMS (5000 -> 50.00Hz) 73 CB Configuration In order to configure the modbus settings of the VPLog-i-R, connect it to the M12 5 Pin female connector (VPA.0000.300) and use the VPFlowScope JB5 interface KIT (VPA.5001.205) to connect it to your PC.
Page 11
Electrical Specification Unit Min. Typ. Max. Conditions Voltage (PWR to GND) Power consumption Vdc=24V Current range (CF=2) 1600 Current range (CF=1.5) 2200 Frequency range Measurement bandwidth Noise % full scale Supply coefficient ppm/V Temperature coefficient ppm/°C Accuracy % full scale Modbus start-up time Measurement start-up time...
Need help?
Do you have a question about the VPLog-i-R and is the answer not in the manual?
Questions and answers