Safety
Information
Introduction
Product
Information
System
configuration
Mechanical
Installation
Electrical
Installation
Getting
Started
Basic
parameters
Running
the motor
Optimization
SMARTCARD
operation
Onboard
PLC
Advanced
parameters
Technical
Data
Diagnostics
UL Listing
Information
16
Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
Table 3-10 Paralleled SPMD 690V motor drive ratings (500V to 690V ±10%) based on AC supply voltage
Table 3-11 Unidrive SPMC/U 400V ratings
Table 3-12 Unidrive SPMC/U 690V ratings
3.1.1 Typical short term overload limits
The maximum percentage overload limit changes depending on the selected motor. Variations in motor rated current, motor power factor and motor
leakage inductance all result in changes in the maximum possible overload. The exact value for a specific motor can be calculated using the
equations detailed in Menu 4 in the
Unidrive SP Advanced User Guide
.
Typical values are shown in the tables below for closed loop vector (VT) and open loop (OL) modes.
Table 3-13 Typical overload limits for all Unidrive SPM modules
Generally the drive rated current is higher than the matching motor rated current allowing a higher level of overload than the default setting.
The time allowed in the overload region is proportionally reduced at very low output frequency on some drive ratings.
The maximum overload level which can be attained is independent of the speed.
Paralleled SPMD modules
Normal Duty
Heavy Duty
Required
rectifier
Required
input line
reactor
Required
output
sharing
choke
Maximum
continuous
output
current
Peak
current
Nominal
motor
power at
690V
Nominal
motor
power at
575V
Maximum
continuous
output
current
Open
loop
peak
current
Closed
loop
peak
current
Nominal
motor
power
at 690V
Nominal
motor
power at
575V
A
A
kW
hp
A
A
A
kW
hp
2 x SPMD16X1
237
261
250
250
190
244
284
200
200
1 x SPMC2601
1 x INL611
1 x OTL611
2 x SPMD16X2
273
300
280
300
237
305
356
250
250
1 x OTL612
2 x SPMD16X3
319
351
315
350
273
351
410
250
300
1 x INL612
1 x OTL613
2 x SPMD16X4
364
401
315
350
319
410
478
280
350
2 x SPMC1601
1 x OTL614
3 x SPMD16X2
410
451
450
450
356
457
534
355
400
1 x SPMC2601
+
1 x SPMC1601
1 x
1 x INL601
3 x OTL602
3 x SPMD16X3
478
526
500
500
410
527
615
450
450
1 x
1 x INL602
3 x OTL603
3 x SPMD16X4
547
601
545
600
478
615
718
450
500
3 x SPMC1601
3 x OTL604
4 x SPMD16X3
638
702
630
700
547
703
820
545
600
2 x SPMC2601
2 x INL612
4 x OTL603
4 x SPMD16X4
729
802
710
800
638
820
957
630
700
4 x SPMC1601
4 x OTL604
When connecting drives in parallel they must be derated. Table 3-2, Table 3-4, Table 3-6, Table 3-8 and Table 3-10 have already the
required de-rating.
NOTE
Model
Maximum
AC input current
Maximum DC
output current
External 24V
current
consumption
A
A
A
SPMC/U1402
344
379
3.0
SPMC/U2402
2 x 312
2 x 345
Model
Maximum AC input
current
Maximum DC
output current
External 24V
current
consumption
A
A
A
SPMC/U1601
195
209
3.0
SPMC/U2601
2 x 173
2 x 185
Operating mode
Closed loop/RFC/
Servo/Regen from cold
Closed loop/RFC/Servo/
Regen from 100%
Open loop from cold Open loop from 100%
Normal Duty overload with motor rated current = drive rated current
110% for 165s
110% for 9s
110% for 165s
110% for 9s
Heavy Duty overload with motor rated current = drive rated current
150% for 60s
150% for 8s
129% for 97s
129% for 15s
NOTE