Emerson unidrive sp User Manual

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88 Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
5.6 Menu 4: Torque and current control
The scaling of the current feedback is based on the rating of the drive as follows:
Current scaling (Kc) is 1 per unit current and is related to the scaling of the drive current feedback. For most drive sizes Kc is the same as the
Maximum heavy duty current rating defined by Pr 11.32. The Maximum heavy duty current rating is the maximum value of rated motor current
(defined by Pr 5.07 or Pr 21.07) that can be set for operation with the force vented motor protection characteristic - Pr 4.25 = 0 (see Pr 4.16 for more
details). If the Kc and Maximum heavy duty current rating are the same then the drive uses 1.75 x Maximum heavy duty current rating for the open-
loop peak limit and the maximum standard operating current for closed-loop modes. This is the limit up to which the drive can control current normally.
The current range above this is allowed for current controller overshoot and for additional current feedback pulses associated with long cable
operation. For some drive sizes the Maximum heavy duty current rating is larger than Kc, therefore the potential overload is reduced below 1.75 x Kc.
The motor rated current (defined by Pr 5.07 or Pr 21.07) may be increased above the maximum Heavy Duty current rating up to the maximum Normal
Duty rated current . When the motor rated current is above the maximum Heavy Duty current rating the drive always provides motor protection
scheme that is intended for variable torque applications (see Pr 4.16 on page 105 for more details). The maximum rated current is the maximum rated
current allowed for Normal Duty operation.
Table below gives the current scaling (Kc), Maximum heavy duty current rating and Maximum normal duty rated current for all drive sizes and voltage
ratings.
Table 5-3 Current ratings
Level x current scaling (Kc)
Over-current trip 1/0.45 = 2.22
Open-loop peak limit 1.75
Closed-loop vector, Servo and Regen maximum standard operating current 1.75
Open-loop maximum standard operating current 1.5
Current scaling (Kc) 1.0
Maximum Normal Duty current rating ≤1.36
Maximum motor rated current ≤1.36
200V 400V 575V 690V
Model
Current
scaling
(Kc)
Max
Heavy
Duty
current
rating
Max
Normal
Duty
rated
current
Model
Current
scaling
(Kc)
Max
Heavy
Duty
current
rating
Max
Normal
Duty
rated
current
Model
Current
scaling
(Kc)
Max
Heavy
Duty
current
rating
Max
Normal
Duty
rated
current
Model
Current
scaling
(Kc)
Max
Heavy
Duty
current
rating
Max
Normal
Duty
rated
current
SP0201 2.2 2.2 2.2 SP0401 1.3 1.3 1.3 SP3501 4.1 4.1 5.4 SP4601 18 18 22
SP0202 3.1 3.1 3.1 SP0402 1.7 1.7 1.7 SP3502 5.4 5.4 6.1 SP4602 22 22 27
SP0203 4.0 4.0 4.0 SP0403 2.1 2.1 2.1 SP3503 6.1 6.1 8.4 SP4603 27 27 36
SP0204 5.7 5.7 5.7 SP0404 3.0 3.0 3.0 SP3504 9.5 9.5 11 SP4604 36 36 43
SP0205 7.5 7.5 7.5 SP0405 4.2 4.2 4.2 SP3505 12 12 16 SP4605 43 43 52
SP1201 4.3 4.3 5.2 SP1401 2.1 2.1 2.8 SP3506 18 18 22 SP4606 52 52 62
SP1202 5.8 5.8 6.8 SP1402 3.0 3.0 3.8 SP3507 22 22 27 SP5601 62 62 84
SP1203 7.5 7.5 9.6 SP1403 4.2 4.2 5.0
SP5602 84 84 99
SP1204 10.6 10.6 11 SP1404 5.8 5.8 6.9
SP6601 85.7 100 125
SP2201 12.6 12.6 15.5 SP1405 7.6 7.6 8.8 SP6602 107.1 125 144
SP2202 17 17 22 SP1406 9.5 9.5 11
SPMA1601 85.7 100 125
SP2203 25 25 28 SP2401 13 13 15.3
SPMA1602 107.1 125 144
SP3201 31 31 42 SP2402 16.5 16.5 21 SPMD1601 85.7 100 125
SP3202 42 42 54 SP2403 23 25 29
SPMD1602 107.1 125 144
SP4201 56 56 68 SP2404 29 29 29 SPMD1603 123.4 144 168
SP4202 68 68 80 SP3401 32 32 35 SPMD1604 144.0 168 192
SP4203 80 80 104 SP3402 40 40 43
SP5201 105 105 130 SP3403 46 46 56
SP5202 130 130 154 SP4401 60 60 68
SPMD1201 133.7 156 192 SP4402 74 74 83
SPMD1202 164.5 192 248 SP4403 96 96 104
SPMD1203 214.2 250 312 SP5401 124 124 138
SPMD1204 248.5 290 350 SP5402 156 156 168
SP6401 154.2 180 205
SP6402 180 210 236
SPMA1401 154.2 180 205
SPMA1402 180 210 236
SPMD1401 154.2 180 205
SPMD1402 180 210 246
SPMD1403 205.7 246 290
SPMD1404 248.5 290 350

Emerson unidrive sp Specifications

General

Brand	Emerson
Model	unidrive sp
Category	Controller
Language	English