CSN Series Magnetoresistive (MR) Closed Loop Current Sensor The CSN Series MR current sensor builds on patented Honeywell technology to Features offer superior sensor performance and accuracy in current measuring applications. Ultra low offset drift with temperature Unipolar voltage supply The current sensor utilises an ASIC (Application Specific Integrated Circuit) and a magnetoresistive (MR) Honeywell magnetic sensor to provide extremely low offset Superior global accuracy over tem- drift with temperature resulting in stable, repeatable, accurate measurements. This perature range -40 C to 85 C is achieved by using an ASIC to exploit the unique features of the MR sensor. There Customer adjustable gain is virtually no offset drift over the entire operating temperature range. Customer accessible voltage refer- The sensor operates from a +5 V unipolar supply and has an accessible, internal ence 2.5 V voltage reference. The sensor can operate from either the internal voltage Self calibrating reference or an external voltage reference, thus enabling several sensors to Designed for auto assembly be used without offset imbalance. Three primary pins enable the sensor to be Current output configured for different measuring ranges and the current output signal enables different load resistors to be used depending on the application. Typical applications The sensor offers flexibility and performance to meet many applications. Servo drives Variable speed drives Frequency converters Power supply systems Over current protection WARNING PERSONAL INJURY Uninterruptible power supplies UPS DO NOT USE these products as safety or emergency stop devices, or in Power metering any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury. WARNING MISUSE OF DOCUMENTATION The information presented in this product sheet (or catalogue) is for reference only. DO NOT USE this document as product installation information. Complete installation, operation and maintenance information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in death or serious injury. Sensing and ControlCSN Series MR Current Sensor Technical information Supply voltage is +5 V and temperature is 25 C unless otherwise stated Electrical Nominal current (In) 25 A.t rms 1 Measuring range 0 to 56 A.t 2 Measuring resistance Rm min. Rm max. with +5 V 25 A.t rms 0 Ohm 80 Ohm 40 A.t rms 0 Ohm 31 Ohm Nominal analogue output current 12.5 mA rms Turns ratio 1-2-3/2000 3 Accuracy 25 C max. 0.24 % In -40 C to 85 C max. 0.32 % In Supply voltage +5 Vdc ( 5 %) Internal reference voltage +2.5 Vdc ( 10 mV) Galvanic isolation 5.0 kV rms/50 Hz/1 minute Accuracy - dynamic performance Zero offset current at 25 C < 30 uA (= 0.24 % of 25 A) Thermal drift of offset current 10 C to 50 C < 5 uA (= 0.04 % of 25 A) Thermal drift of offset current -40 C to 85 C < 10 uA (= 0.08 % of 25 A) Linearity < 0.1 % Response time 90 % of pulse amplitude < 200 ns di/dt accurately followed > 100 A/us Bandwidth (-1 dB) dc to 200 kHz General data Operating temperature -40 C to 85 C Storage temperature -40 C to 90 C Current consumption 12 mA (+5 V) plus output current Secondary internal resistance ( 70 C) 50 Ohm Positive primary current In direction of arrow Sensor housing Glass-filled Polyamide (UL94-V0) Approvals EN 50082-2, EN 50081-2, UL, CE Rated insulation voltage (RIV)/Insulation classification 400 V reinforced Dimensions L x W x H ( mm ) 34 x 12,6 x 25,5 Construction Fully encapsulated Environment Pollution degree 2, Category III Fastening PCB mounted sensor Weight 20 g Connection to primary Via 6 x 0,8 mm square pins Connection to secondary Via 5 x 0,64 mm square pins Notes 1 ac peak. Maximum dc or ac rms range is 40 A.t. 2 Higher resistance (Rm) values can be used with reduced measuring range. Specified values conditional on 70C ambient and no power supply tolerance. 3 Excludes the effects of tolerances of reference voltage and external load resistance. 2 Honeywell Sensing and Control