Vacon 20 Compact AC Drive User Manual

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126 • vacon parameter descriptions Note: If you use long motor cables (max. 100m) together with small drives (
parameter descriptions vacon • 127 13.10 MTP:THERMAL TIME CONSTANT This time can be set between 1 and <strong>20</strong>0 minutes. This is the thermal time constant of the motor. The bigger the frame and/or slower the speed of the motor, the longer the time constants. The time constant is the time within which the calculated thermal model has reached 63% of its final value. The motor thermal time is specific to the motor design and it varies between different motor manufacturers. If the motor's t6-time (t6 is the time in seconds the motor can safely operate at six times the rated current) is known (given by the motor manufacturer) the time constant parameter can be set basing on it. As a rule of thumb, the motor thermal time constant in minutes equals to 2 x t6. If the drive is in stop state the time constant is internally increased to three times the set parameter value. See also Figure 9.18. The cooling in stop stage is based on convection and the time constant is increased. Motor temperature 105% Trip area Motor current I/I T Fault/warning activation point, if selected with par. 13.7 Time constantT *) Motor temperature Q=(I/IT) 2 x(1-e -t/T ) *) Changes by motor size and adjusted with parameter 13.10 Time Figure 9.18: Motor temperature calculation P13.11 STALL CURRENT The current can be set to 0.0…2xI Nunit .For a stall stage to occur, the current must have exceeded this limit. If parameter P1.7 Motor current limit is changed, this parameter is automatically calculated to 90% of the current limit. See Figure 9.19. Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com 9
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vacon ® 20 ac drives complete user
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Table of contents Document: DPD0071
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9.15Application setting (Control pa
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safety vacon • 1 1. SAFETY ONLY A
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safety vacon • 3 1.2 Safety instr
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safety vacon • 5 1.4 Before runni
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eceipt of delivery vacon • 7 2. R
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eceipt of delivery vacon • 9 2.4
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BACK RESET OK LOC REM BACK RESE T O
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installation vacon • 13 Figure 3.
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installation vacon • 15 3.1.1 Vac
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installation vacon • 19 3.1.2 Coo
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installation vacon • 21 Phone: 80
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installation vacon • 23 Phone: 80
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installation vacon • 25 MI1 - MI3
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installation vacon • 27 3.1.4 EMC
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installation vacon • 31 3~ (380,
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installation vacon • 33 Attach th
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installation vacon • 35 Control c
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installation vacon • 37 4 5 6 Pho
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installation vacon • 39 M4*8 Scre
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installation vacon • 41 Frame Typ
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installation vacon • 43 3.2.6 Gen
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commissioning vacon • 45 4. COMMI
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fault tracing vacon • 47 5. FAULT
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fault tracing vacon • 49 Fault co
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vacon 20 api vacon • 51 6. VACON
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vacon 20 api vacon • 53 6.2 Contr
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control panel vacon • 55 7. CONTR
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control panel vacon • 57 Symbol B
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control panel vacon • 59 7.4.2 Re
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control panel vacon • 61 Phone: 8
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control panel vacon • 63 Code Mon
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control panel vacon • 65 7.4.4 Pa
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control panel vacon • 67 7.4.5 Sy
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parameters vacon • 69 8. STANDARD
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parameters vacon • 71 i i i i Cod
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parameters vacon • 73 i i i i Cod
Page 81 and 82: parameters vacon • 75 8.4 Frequen
Page 83 and 84: parameters vacon • 77 Code Parame
Page 85 and 86: parameters vacon • 79 8.7 Analogu
Page 91 and 92: parameters vacon • 85 8.13 Limit
Page 93 and 94: parameters vacon • 87 i Code Para
Page 97 and 98: parameters vacon • 91 8.17 Motor
Page 103 and 104: parameter descriptions vacon • 97
Page 111 and 112: 1 2 3 4 5 6 7 8 9 parameter descrip
Page 131: parameter descriptions vacon • 12
Page 149 and 150: technical data vacon • 143 10. TE
Page 151 and 152: technical data vacon • 145 10.2 P
Page 153 and 154: technical data vacon • 147 10.2.4
Page 155 and 156: Phone: 800.894.0412 - Fax: 888.723.
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