MFA - MF enclosed D.C. motors
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1 MFA - MF example : Data : at 950 min -, - speed drive output voltage 80 V, - supply by thyristor. Operating mode : - reselect the size of the motor using the chart opposite : MFA In the selection table look for the power closest to 0.7 for a form factor of.6 (due to the type of speed drive) (see the following page, an extract of which appears below) : = 0.75 at 2000 min -. How can the rated speed be adjusted to the required speed? By adjusting the armature voltage (speed drive output), without exceeding the rated value, as the power is corrected proportionally. In this case, to be used at 850 min -, the motor will be supplied at = 75.5 V, and = 0.75, or Motor selected : MFA 80 L - 80 V IC MF 2 MF MFA MFA 63 MFA 56 ower min - Speed n M N I η MFA for armature voltage 80 V without excit. size min - N.m A L S S L L L L VL B2.4
2 MFA FF.6 I 44 MFA motor - Class F Field excitation by permanent magnets ower supply by thyristor (form factor.6) S duty - Ambient temperature 40 C - Altitude 000 m n M N I η L R 5 U max Moment MFA for armature voltage 80 V without excit. of inertia size min - N.m A mh Ω V 0-3 kg.m 2 0, ,24 0,6 0, , ,26 56 S 0, ,38 0,58 23, ,5 56 L 0, ,57,2 0, ,7 200,3 63 S 0, ,80,9 0,7 2 4,25 200,7 63 M 0, ,8 2,4 0,75 4,3 2, ,5 63 L 0, ,77 2,7 0, ,5 80 S 0, ,8 3,7 0, , ,5 80 S 0, ,63 3,7 0, , L 0, ,75 5, 0,599 7, L 0, ,58 5, 0, , L 0, ,39 4,9 0,85 8, L ,78 6,6 0,842 20, ,5 80 VL ,8 7,6 0,73 2 0, ,5 80 VL example : see page B2.4. Maximum current which must not be exceeded :.6 times the rated current; otherwise there is a risk that the magnets will be demagnetized.. FF : current form factor. n : Rated speed ± 0 % R 5 : Armature resistance at 5 C B2.5
3 MFA FF.05 I 44 MFA motor - Class F Field excitation by permanent magnets ower supply by thyristor (form factor.05) S duty - Ambient temperature 40 C - Altitude 000 m n M N I η L R 5 U max Moment MFA for armature voltage 80 V without excit. of inertia size min - N.m A mh Ω V 0-3 kg.m 2 0, ,29 0,65 0, , ,26 56 S 0, ,57 0,83 23, ,5 56 L 0, ,96 2, 0, ,7 200,3 63 S 0, ,43 2,6 0,83 2 2,53 200,7 63 M 0, ,75 3,5 0,86 4,3 2, ,5 63 L 0, ,5 3, 0, ,5 80 S 0, ,75 3,7 0, , ,5 80 S 0, ,5 4,5 0, , L 0, ,39 5,3 0,786 7, L 0, ,30 6, 0,82 2 2, L ,8 6,8 0,87 3, L, ,73 7,9 0,844 6, ,5 80 VL, ,4 8,6 0,84 0 0, ,5 80 VL example : see page B2.4. Maximum current which must not be exceeded :.6 times the rated current; otherwise there is a risk that the magnets will be demagnetized.. FF : current form factor. n : Rated speed ± 0 % R 5 : Armature resistance at 5 C B2.6
4 MF 00 L I 44 motor - Class F Separate field excitation : 90 V ± 0 % ower supply by single phase rectified current, with or without S duty - Ambient temperature 40 C - Altitude < 000 m with without Rotation speed n for voltage U M N 50 V 80 V 230 V 250 V 260 V 30 V without I η L R 5 U max min - min - min - min - min - min - N.m A excitation mh Ω V 0,5 0, ,5 4 0, , ,63 0, ,52 4 0, , ,82 0, ,46 4 0, , ,9 0,8 90 6,42 4 0,8 82 5, ,95 0, ,47 4 0, , , ,37 4 0,8 82 5, ,8 0, ,69 5,5 0, , ,96 0, ,60 5,5 0, , ,24, 600 6,57 5,5 0, , ,36, ,55 5,5 0, , ,42, ,52 5,5 0, , ,7, ,5 5,5 0, , ,93 0, ,44 6,7 0,824 64, , ,37 6,7 0,83 64, ,47, ,37 6,7 0,845 64, ,6, ,4 6,7 0,854 64, ,68, ,30 6,7 0,856 64, , ,37 6,7 0,859 64, ,39, ,47 9,6 0,85 30, ,7, ,5 9,6 0,868 30, ,8, ,39 9,6 0,87 30, The values given are for power supply without : form factor FF =.6 ; for FF =.2 (using an additional ), multiply these values by.3. example : see page B2.4. Moment of inertia kg.m 2 Field excitation power at 20 C 60 W R 5 : Armature resistance at 5 C U max : Maximum armature voltage B2.7
5 MF 2 L I 44 motor - Class F Separate field excitation : 90 V ± 0 % ower supply by single phase rectified current, with or without S duty - Ambient temperature 40 C - Altitude < 000 m with without Rotation speed n for voltage U M N 50 V 80 V 230 V 250 V 260 V 30 V without I η L R 5 U max min - min - min - min - min - min - N.m A excitation mh Ω V 0,72 0, ,26 5,4 0, , ,88 0, ,97 5,4 0, , , ,76 5,4 0, , ,25, 90 8,83 5,4 0, , ,3, ,93 5,4 0, , ,58, ,9 5,4 0, , ,6, ,94 8,5 0,808 55, ,4, ,84 8,5 0,86 55, ,84, ,90 8,5 0,835 55, ,0, ,90 8,5 0,839 55, ,, ,83 8,5 0,84 55, ,5 2, ,79 8,5 0,842 55, ,3, ,93 9,4 0,86 44,5 0, ,58, ,9 9,4 0,83 44,5 0, ,05, ,96 9,4 0,838 44,5 0, ,23, ,92 9,4 0,839 44,5 0, ,32 2, ,90 9,4 0,84 44,5 0, ,78 2, ,86 9,4 0,844 44,5 0, ,06, ,69 4 0,867 9,5 0, ,49 2, ,75 4 0,875 9,5 0, The values given are for power supply without : form factor FF =.6 ; for FF =.2 (using an additional ), multiply these values by.3. example : see page B2.4. Moment of inertia kg.m 2 Field excitation power at 20 C 60 W R 5 : Armature resistance at 5 C U max : Maximum armature voltage B2.8
6 MF 2 VL I 44 motor - Class F Separate field excitation : 90 V ± 0 % ower supply by single phase rectified current, with or without S duty - Ambient temperature 40 C - Altitude < 000 m with without Rotation speed n for voltage U M N 50 V 80 V 230 V 250 V 260 V 30 V without I η L R 5 U max min - min - min - min - min - min - N.m A excitation mh Ω V, 0, ,26 8 0,775 5, ,35,6 80 3,68 8 0,8 5, ,75, ,69 8 0,826 5, ,9, ,75 8 0,835 5, , ,8 8 0,84 5, ,4 2, 450 3,83 8 0,848 5, ,25, 950,06 9 0,8 27, ,5,33 40,4 9 0,82 27, ,74 460,38 9 0,84 27, ,5,9 600,34 9 0,845 27, , ,44 9 0,852 27, ,7 2, ,36 9 0,855 27, ,6, ,55,2 0, , ,55,2 0, ,5 2, ,59,2 0, ,7 2, ,55,2 0, ,9 2, ,55,2 0, , ,55,2 0, The values given are for power supply without : form factor FF =.6 ; for FF =.2 (using an additional ), multiply these values by.3. example : see page B2.4. Moment of inertia kg.m 2 Field excitation power at 20 C 50 W R 5 : Armature resistance at 5 C U max : Maximum armature voltage B2.9
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