User manual CONTROL TECHNIQUES UNIMOTOR TECHNICAL DATA

[. . . ] Technical Data Unimotor and High performance AC brushless servo motors Control Techniques Dynamics Limited Unimotor and Technical Data Control Techniques Dynamics is renowned for its innovations in the industrial servo, aerospace and defence markets since 1962 and is a member of the Emerson (USA) group of companies. Our long experience provides a strong base to develop cost effective solutions for a spectrum of applications from machine tools, mechanical handling, pick and place machinery; through to specialised mechanisms a nd actuators for the avionics industry. Our Research and Development team works closely with leading universities and, using our own proprietary software, designs innovative products for a wide range of demanding environments. Control Techniques Dynamics offers continuous advances in product range, backed with the expertise and flexibility to meet the demands of your applications - now and in the future. 2 www. controltechniques. com Contents Page. [. . . ] The values may change when mounted into the motor and connected to a drive. These values have not been verified by Control Techniques Dynamics. The resolution is determined by the anologue to digitial converter used. The value shown is when the resolver is used in conjunction with the SM-Resolver. are analogue outputs. With Unidrive SP and Digitax ST the resolutions quoted above are when the encoder type is set to either SC Endat or SC Hiper depending on the encoder. www. controltechniques. com 45 Unimotor and Technical Data 4. 13 Feedback terminology Accuracy Accuracy is the measure of the difference between the expected position and actual measured value. Rotary feedback accuracy is usually given as an angle representing the maximum deviation from the expected position. Linear feedback accuracy is usually given as a distance representing the maximum deviation from the expected. Generally, as accuracy increases the cost of the feedback device increases. Absolute encoders output unique information for each mechanical measured position. With the motor shaft or plate in any position when the drive is turned on the feedback device will always be able to sense a unique position and transmit this value to the drive. For an absolute single turn rotary encoder these unique positions will be over one revolution. When power is removed from the encoder and the shaft or plate moves the device will know its current position when the power is restored. A non-absolute feedback mechanism must start from a known position, such as the index or marker pulse. Commutation Commutation outputs are used on devices that are nonabsolute. For AC Synchronous 3 phase motors there are 3 outputs commutation output signal channels from the feedback device, for example S1, S2 and S3. The diagram below shows commutation outputs for 6 pole commutation (3 pole pairs). The 3 phase motor sinusoidal power from the drive runs synchronously with motor speed at N/2 cycles per revolution; Index K U V W R S T Absolute encoder 0 20 40 60 120 360 Bit A bit is short for Binary Digit. It is the smallest unit of information in a machine/drive. A single bit has a binary value of either 0 or 1. These bits do not normally exist on their own, but usually in groups. The larger the number of bits in a group the larger the amount of information that is available and thus the higher the resolution. This group can be converted to decimal using binary arithmetic. The group of bits can be converted to decimal by starting at the right most bit and multiplying each successive bit to the left by two. So for example a 12 bit number would give a decimal equivalent of 4, 096 and a 19 bit number would give a decimal equivalent of 524, 288. commutation information to enable the drive to synchronise the stator flux field with the rotor of the motor. [. . . ] Confidential technical documentation has been compiled according to the specific requirements of each directive: Description of product: Brushless Permanent Magnet Servo Motors Types 480V U2, UM/SL, UD 220V E2, EZ, ED. Standard rating: ATEX rating: Atex Gas Ex II 3 G Ex pz T3 (0<Ta<40°C) BSI 09 ATEX 546579X Frame Size 067 to 250, 480V AC, 11. 6 kW maximum, Speed 0-6000 RPM, Thermal Classification: Delta 100°C. Unimotor UM and fm frame size 075 to 190, 480V AC, 11. 6 kW maximum, Speed 0-3000 RPM, Thermal Classification: Delta 100°C. Atex Dust Ex II 3 D Ex tD A22 IP65 T 200°C BSI 09 ATEX 546579X The following standards have either been referred to or have been complied with in part or in full: Reference EN 60034-1:2004 EN 60034-5:2001 EN 60034-6:1993 EN 60034-7:1993 EN 60034-8:2007 EN 60034-14:2004 EN 60204-1:2006 EN 60079-0:2006 EN 60079-2:2007 EN 61241-0:2006 EN 61241-1:2004 Title Rotating electrical machines ­ Part 1: Rating and performance Rotating electrical machines ­ Part 5: IP Code Rotating electrical machines ­ Part 6: IC Rating Rotating electrical machines ­ Part 7: IM Rating Rotating electrical machines ­ Part 8: Terminal markings and direction of rotation Rotating electrical machines ­ Part 14: Mechanical vibration Safety of machinery ­ Electrical equipment of machines Part1: General requirements Electrical apparatus for explosive gas atmospheres ­ general requirements Electrical apparatus for explosive gas atmospheres ­ pressurised enclosures "p" Electrical apparatus for use in the presence of combustible dust ­ general requirements Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD" Signed Control Techniques Dynamics Ltd. [. . . ]