z
D
U
TR TASC Unit Selection Guide
As a market leader in the
design and manufacture of
innovative and durable drives
and control systems, the
company has built a reputation
as a supplier of reliable, robyst
and cost effective solutions to
problems in the control of
industrial processes, both in
the UK and worldwide.
The company's unique
experience and expertise
provides an unrivalled level of
service and back-up for all
industrial applications. A wide
product portfolio includes the
Oulton Switched Reluctance
Drive, NECO DC & AC Motors,
Electropower Gears, Precision
Step Systems, DISCO & Supaflex
Drives, EDC Traction Motors and
Glentronic Phase Converters,
The industry standard TR TASC
Unit eddy current drive unit is
described in this publication.
The compact 4200 Controller.
VTR TASC UNIT
The TR TASC Unit is a frictionfree eddy current coupling
which provides infinitely
variable torque and speed and
is driven by a standard squirrel
cage motor which is directly
connected to the mains, A
simple controller, consisting of
a single electronic circuit
board, provides closed-loop
speed control by comparing
the feed-back signal from an
inbuilt tachogenerator with
the set-speed demand signal.
The TR TASC Unit eddy current
coupling is, in many respects,
the most versatile drive and is
available in various forms:-
• Variable speed output.
1 Variable torque output.
B Infinitely variable load
(braking),
• Constant output speed with
variable input speed.
The TASC eddy current coupling
has been accepted as the
industry standard and it is very
doubtful any other drive system
is as simple, robust, inexpensive
and forgiving of abuse.
Although the TR TASC Units
described in this publication
are mainly used as variable
speed drives, units are
available which provide the
options listed above.
CONSTRUCTION
AND PRINCIPLE
OF OPERATION
A torque tube mounted on a
hub incorporating a cooling
fan, is driven by a motor at
constant speed. A polewheel
assembly fixed to the output
shaft is free to rotate within
the torque tube. A d.c. excitation
coil, mounted within the
polewheel assembly is supplied
from the secondary of a
rotary transformer mounted on
the shaft.
The triac output stage of the
TR TASC Unit controller supplies
the coil with variable voltage
and current. A magnetic field
is set up in the polewheel
TORQUE TUBE
MOTOR
COIL
POLEWHEEL ASSEMBLY
ROTARY TRANSFORMER
TACHOGENERATOR
TYPICAL CONTROL
CONFIGURATION
SET-POINT
CONTROLLER
PRESSURE ERROR
SENSING
RM1002 (MANUAL)
340%
TYPICAL TORQUE/SPEED CURVES FOR TASC
UNITS UP TO 10.3RW, 2 POLE
Starting Torques from 241% to 340%
Starting Torques Available:
(340% = 100TR2/1)
(241% = 132TR2/3)
241%
100% = RATED CONSTANT TORQUE
100%
CONTROLLED SPEED RANGE = 45:1
MOTOR
SPEED
RATED SPEED
inducing a voltage, and
causing eddy currents to flow
in the torque tube. These eddy
currents produce their own
magnetic field within the
torque tube which interacts
with the main field and
causes the polewheel to rotate
in the same direction as the
motor. Torque is a function of
coil current.
Closed-loop speed control is
effected by comparing the
signal from a tachogenerator
driven by the output shaft, with
a "set-speed" reference signal.
Any error, or difference,
between the two signals
detected by the speed error
sensing circuit, causes the
triac output stage to adjust
the coil current, and hence
torque to maintain set speed.
The TR TASC Unit is a
heteropolar type which
produces higher starting and
running torques than earlier
homopolar types. Starting
torques can be as high as
340% of rated torque as the
TR TASC Unit eddy current drive
allows the pull-out torque of
the driving motor to be utilised
during starting. The design of
the TR range includes a
patented rotary transformer
that allows current to reach
the main coil, which rotates
with the heteropolar polewheel,
without the use of brushes
and slip-rings, which need
regular maintenance. As with
previous units, the TR model
does NOT include a centrebearing which tends to overheat
in service and have a short life.
Speed range at constant
torque is up to 45:1 and
regulation, with built in
closed-loop control, is better
than 1%. Soft- starting is
standard as the motor starts
"off-load" and acceleration
and deceleration rates are
adjustable.
TR TASC UNIT
FEATURES &
BENEFITS
:
The TR TASC Unit eddy current
drive is an extremely versatile
constant torque drive which
provides outstanding infinitely
variable control of torque and
speed, Together with its
associated compact controller,
it combines low prime cost
with zero maintenance,
reduced energy consumption,
negligible RFI and mains
harmonics.
TR TASC UNIT CONTROLLER
The TR TASC Unit speed
controller is a single, compact
printed circuit card, only
100mm x 160mm which is
suitable for the whole range of
TR TASC Units irrespective of
power rating. It is available
suitable for panel or rack
mounting, and all customer
adjustable controls are factory
preset, only requiring fine
tuning adjustments if necessary
on site. The control circuit is
opto-isolated from the mains
supply and the controller will
accept all common input
control signals.
TR TASC UNIT FEATURES
D High starting torque.
D Wide speed range at
constant torque.
D No routine maintenance,
D Can be stalled without
damage for long periods.
D High tolerance to abuse
and misuse.
D Standard AC motors fitted,
D Operation in any attitude,
D Guarded or hoseproof
enclosures.
D Motor starts off load,
reducing mains peak
demands.
D Wide range of options in
flanges and gearboxes,
D Environmental options such
as 100% humidity, low
temperature (-60°C) and
chemical works protection.
D Brakes, power applied or
failsafe, can be built in.
D No centre bearing, no drag
torque.
D Constant cooling over
whole speed range,
D Reversible drive,
TASC UNIT
DERIVATION
PRINCIPAL DIMENSIONS OF TR INDUSTRIAL DRIVE UNITS.
ALL DIMENSIONS IN MILLIMETRES EXCEPT SOME MOTOR TERMINAL BOX CONDUIT HOLES (KL).
TASC UNIT FIXING DIMENSIONS
MOHFI
A
B
US1C
BRAKE
C
C
OUTPUT SHAFT
GENERAL DIMENSIONS OF TASC UNIT
INPUT SHAFT CODE K
CODfNCobn
H
0K
LA
M
0N
0P
0S
T
D
DA EB
E
F
6
U
5 AB AD AE AE BB BC HA HC HO 0KK 1
Z DD DDA EEB EE FF G6 UU
90TR 2/0
90TR 2/2
90TB 2/3
90TR 4/0
9DTR 4/1
90TR 4/2
OOTR
OOTR
OOTR
OOTR
2/1
2/2
4/1
4/2
32TR 2/1
32TR 2/2
32TG 2/3
32TR 4/1
32TR 4/2
32TR 4/3
60TR 2/1
60TR 2/2
60TR 2/3
60TR 4/1
60TR 4/2
80TR 4/2'
60TR 4/3
60TR 4/3'
80TR 2/1
80TB 2/2
80TR 2/3
80TFU/110
80TR 4/150
80TR 4/1
BOTR 4/1*
BOTR 4/2
BOTR 4/2'
225TR4/185
225TR 4/220
225TR 4/1
225TR4/T
225TR 4/2
225TR 4/2'
225TR W
LF LF AC AF AG AH BF BG HB HF HG HH 0KC KL
L
158
-
-
178
178
158
158
178
-
- 1 4 0
-
140
132
132
140
-
-
586
641
586
641
178
691
746 441 546 218
178
691
218
746
-
-
140
146
140
146
-
-
821
821
97B
751
751
821
821
821
978
751
751
821
557 637
160
100
147
227
90
12
12
165
170
112
147
252
100
12
12
165 1 301)7 200
240
120
215
215
12
12
215 180H7 250
340
120
213
238
132
132
160'
132
132
132
160
160
180
160
160
160
160
160
15
16
130W
200
30D 250h7 350
12
12
15
19
19J6
M6
12
40
6
15.4
6
25
19J6
M6
12
40
6
15.4
6
25
190 132 340 332
3.5
19)6
M6
12
40
6
15.4
6
25
19J6
M6
12
40
6
15.4
6
25
210.137 361 352 159
15
4
28]6
MS
16
60
8
23,8
7
40
270 174 420 432
34
3.5
5
42k6
M16
30
110
12
37
8
80
28J6 MB
28J6 MB
381(6 M12
2BJ6 MB
28J6 MB
3Bk6 M12
16
16
25
16
16
25
60
60
SO
60
60
60
8
8
10
8
8
10
38k6
38k6
48K6
38K6
38k6
38k6
48k6
48k6
25
25
30
25
25
25
30
30
80
80
110
80
80
80
110
110
0
0
4
0
0
0
4
4
M12
M12
M16
M12
Ml 2
M12
M16
M16
24.0
24.0
33,0
24,0
24.0
33.0 8
33.0
33.0
42.5
33.0
33.0
33.0
42.5
42.5
8
8
9
8
8
8
9
9
40
40
56
40
40
56
56
56
80
56
56
56
80
80
147
190
380 202 482 518 155
13.5
16
200
i
200'
1
200
19G'
340
140
214
239
180'
15
16
300 250 W 350
19
5
48k6 M16
30
110
14
42.5 9
80
48kB M16
30
110
14
42.5 9
80
3801202 513 548 181
21
180
180
180
10
188 243
21
21
230
197
332
19
20
400 350fi8 450
19
5
60m6 M20
35
140
18
53
11
100 60m6 M20
35
140
18
53
11
100 489
:
612 NA'
242
283
21
-
-
-
-
169 -
-
-
179 179
169 169 179 -
-
-
-
-
1
1
4
1
1
1
275
275
303
275
275
275
322
322
350
322
322
322
1
1
3
1
1
1
1
1
333
333
353
333
333
333
333
333
395
395
415
395
395
395
395
395
239
239
278
198
239
239
239
239
237
237
250
237
237
237
237
210 \tff
5
254 W 5
241 ISO1 8
- 210 1601 5
210 16ff 5
254 16C3 5
254 1601 5
37
37
37
17
17
17
17
17
17
392
392
392
372
372
372
372
372
372
454
129 1322
400 318 382 303
454
129 1322
400 318 382 303
454
129 1322
400 318 382 303
434
109 116
318 254 304 239
434 21 109 116 838 863 31B 254 304 239
434
115 182
362 279 329 278
434
115 182
362 279 329 278
434
1157 182
362 279 329 278
434
1157 182
362 279 329 278
265
265
265
240
240
253
253
253
253
305 2017
305 200'
305 20ff
210 iff
254 Kf
241 8ff
241 8ff
279 80*
279 80'
270
270
282
282
314
314
314
241 Sff 53
279 8ff 53
305 20? 50
305 2Cff 50
286 2251 25
286 225' 25
311 225' 25
21
25
467 549
602
602
705
602
602
705
602
602
705
602
602
705
794 0 9
794 8 9
814 8 9
21 924 949 794 B 9
1067 1092 794 B 9
1067 1092 794 B 9
1067 1092 814 839
1067 1092 814 839
1067 1092
1067 1092
1133 1158
2!
127 1412
127 1412
131 1446
131 1446
141 1549
141 1549
1439 1574
' FORCED COOLED TASC UNITS - CODE 61
132 -
208 263
225'
440
572 652
572 652 427 507
557 637
557 637
572 652
10
225'
225''
225'
225
225
225
MOTOR
BASIC BRAKE IASIC IRAK
1087 1222
260 - 198 260 - 198 318 254 304 239 195.5 210
218 - 146 218 - 146 260 - 198 318
318
362
260
318
318
318
318
362
362
360
360
484
484
489
254
254
279
254
254
254
254
279
279
318
318
356
356
356
304
304
329
304
304
304
304
329
329
394
394
426
426
426
278
278
2B6
286
380
380
380
16ff
-
189
221
189
209
-
-
M20
- M20
- M20
- M2D
- M20
- M20
-
M20
021 X 2
M20
021 X 2
-
5
262 309 - 0 2 6 X 2
262 309 - 0 2 6 X 2
319 366 15 M32
- 24! - 021 X 2
- 241 - 021 X 2
- 262 309 - 026 X 2
319 366
5
319 366
5
361 416
5
290 337
319 366
5
319 366
5
319 366
5
319 366
5
25 400
25 400
25 400
25 340
25 340
B 361
8 361
8 36!
8 361
406
406
405
405
467
467
470
M32
M32
M32
- 826X2
M32
M32
M32
M32
472
472
472
386
386
416
416
416
416
9
9
9
5
5
5
5
5
5
033/54X2
033/54 X 2
033/54X2
M32
M32
M32
M32
M32
M32
461
461
469
469
530
530
530
5
5
9
3
3
9
9
M32
M32
033/54X2
033/54X2
2"
2"
2"
ON THE MODELS LISTED BELOW, THE MOTOR FLANGE
EXTENDS BELOW THE FEET BY DIMENSION T
HJ
il
"ODEl
BB: DIMENSION ACROSS FEET
BC: CENTRE OF HOLE FROM FOOT EDGE
H: TASC UNIT CENTRE HEIGHT
HB: MOTOR CENTRE HEIGHT WHEN FEET
ARE FITTED
HC: TOP OF TASC UNIT HOUSING
HD: TOP OF TASC UNIT EYE BOLT
(90-180TR) 4 I 0S ON M PCD AT 45°
III
HG: TOP OFMOTOR FRAME
HH: TOP OFMOTOR EYE BOLT
0KK: CONDUT HOLE SIZE
KL: CONDUT HOLE-EITHER
THREADED TO BRITISH
STANDffiO OR CLEARANCE
HOLE WHERE e> SYMBOL IS
GIVEN
NOTES
1. 'Centre height includes foot blocks under the TASC UNIT or MOTOR to enable mounting on a flat bed (refer to
dimension'H'),
2, These models are supplied with feet on the MOTOR as well as the TASC UNIT (refer to dimension 'HB').
3 'AH' dimension is the distance from centre of unit to MOTOR terminal box Ed. The MOTOR terminal box is on
top on models fitted with motors up to and including frame Dl 12 (see selection guide). All other models on
RHS viewed from output shaft, unless specified LHS when ordering.
4. Model 225TR is not available as standard in totally-enclosed format. For information on ducted clean-air
supply please contact our Sales Dept.
5. 'AD' dimension is the distance from centre of unit to TASC UNIT terminal box lid, The TR TASC UNIT terminal
box is supplied on top unless otherwise specified. (E3-RHS viewed from output shaft, E6-undernsath, E9-LBS).
The first two or three numbers indicate the
shaft centre-height or frame size, foilowed
by the letters TR (transformer, rotary}. The
next number gives the number of poles of
the motor and, therefore, indicates motor
speed: 2 indicates 2-pole (3000 R.P.M.
nominal), 4 indicates 4-pole (1500 R.P.M.
nominal) etc. The final number indicates
the particular model. They generally
ascend as the motor power increases.
Controller Designation 4200 is the
standard panel mounting speed controller
for 220/240V supplies. 4200/R is the
standard rack mounting speed controller
for 220/240V supplies. 4100 is the 110V
supply version of the 4200. 4100/R is the
110V supply version of the 4200/R.
VARIABLE SPEED DRIVE
SYSTEM SELECTION GUIDE
Rated Speed The rated speed of a
TASC Unit is Its maximum speed at rated
load and torque. A small speed difference
between motor speed and TASC Unit rated
speed exists because, like the squirrel
cage motor, the TASC Unit is an induction
machine and needs this "slip-speed"
to achieve full torque. The data given
here is for drives on 50Hz supplies. A
similar table is available for 60Hz drives.
Bated Torque The rated constant torque
of a TASC Unit is set at a level which fully
loads its drive motor. It is achieveable
over the speed range and, for continuous
operation, it must not be exceeded.
However, higher torques can be achieved
for short-term use such as starting,
accelerating and overcoming shock loads.
Starting Torques The starting torque stated
is that achieved with the TASC Unit at
ambient temperature. Values up to 340%
of rated torque are achieveable as
the motor pull-out torque can be utilised
for starting, With the drive at its normal
operating temperature, the starting torque
is reduced slightly,
Maximum Continuous Stall Torque This is
the maximum level of stall torque in an
ambient temperature of 35"C. If this level
of torque is Increased, the Unit will exceed
the thermal limit where short-term use
only is possible. If this level is above the
rated torque, then the rated torque is
stated as the limit to avoid overheating
the drive motor.
Speed Range The thermal speed range
stated will not cause overheating of the
TASC Unit when it Is operated continuously
at rated torque at the stated minimum
speed. If the thermal limit of a TASC Unit
is greater than the rated torque, the
minimum speed is given as zero.
The thermal speed range can be increased
by decreasing load torque, operating in
a lower ambient temperature or
increasing the flow of cooling air.
The tacho-generator fitted to the
TASC Unit gives accurate closed-loop
TR TASC UNIT 2 POLE CONSTANT TORQUE DRIVES - 50Hz
TASC
Unit
Model
Output
Power
kW
90TR2/0
90TR2/1
90TR2/2
90TR2/3
0.74
100TR2/1
100TR2/2
2,9
3.8
132TR2/1
132TR2/2
132TR2/3
5.4
7.3
160TR2/1
160TR2/2
160TR2/3
180TR2/1
180TR2/2
180TR2/3
1.05
1.4
2,1
Rated
Constant
Torque Nm
Starting
Torque
Nm
2.5
3.7
5.0
7.5
6.9
10.2
16.5
17.6
10.0
34.0
13.2
34.0
Speed Range with
Constant Torque (rpm)
IP23
IP55
Induction Motor
Fitted to TASC Unit
kW
rpm
Frame
2800-0
2750-0
2700-0
2650-0
2800-0
2750-0
2700-0
2650-0
0.75
1.1
1.5
2.2
2850
2850
2850
2850
D80AC
D80BC
D90SC
D90LC
2700-0
2650-0
2700-0
2650-200
3.0
4.0
2880
2820
D90LLD
D112MC
2775-0
2765-0
2700-0
2775-0
2765-0
2700-440
5.5
7.5
110
2870
2870
2930
D132SAC
D132SBC
D160MAD
18.5
48.1
25.0
65.0
10.3
36.5
88.0
14.0
48.8
17.0
60.3
20.0
72.0
130.0
130,0
130.0
2765-0
2700-550
2650-930
2765-400
2700-890
2650-1210
15.0
18.5
22.0
2940
2950
2920
D16OMBD
D16OLD
D180MD
198.0
217.0
217.0
2800-930
2725-1295
2685-1400
2800-1330
2725-1620
2685-1860
30.0
37.0
45.0
2945
2945
2945
D200LD
D200LD
D200LHD
29.0
99.0
34.5
121.0
148.0
41.6
TR TASC UNIT 4 POLE CONSTANT TORQUE DRIVES - 50Hz
TASC
Unit
Model
Output
Power
kW
Rated
Constant
Torque Nm
Starting
Torque
Nm
3.8
5.1
7.5
8.4
90TR4/0
90TR4/1
90TR4/2
0.52
100TR4/1
100TR4/2
1.4
1.9
10.0
23.0
14.5
39.0
132TR4/1
132TR4/2
132TR4/3
2.75
20.5
55.3
3.65
27.0
74.0
4.9
37.0
88.0
7.0
49.8
160TR4/1
160TR4/2
160TR4/2*
160TR4/3
160TR4/3*
0.7
10
10,2
10,4
72.0
13.3
97.4
13.5
97.4
0.55
0.75
11
1400
1400
1420
D80AC
D80BC
D90SC
1280-0
1220-0
1280-0
1220-100
15
2.2
1420
1420
D90LD
D100LAC
1280-0
1285-0
1255-0
1280-0
1285-0
1255-220
3.0
4.0
5.5
1420
1420
1440
D100LBD
D112MD
D132SC
124.5
136,0
136.0
136.0
136.0
1350-0
1350-320
1375-0
1305-870
1320-375
1350-60
1350-500
7.5
11.0
11.0
15.0
15,0
1440
1460
1460
1470
1470
D132MC
D160MD
D160MD
D160LD
D160LD
1340-80
1320-420
1310-660
1310-0
1300-750
1300-200
1340-360
1320-650
1310-835
110
15.0
18,5
18.5
22.0
22.0
1460
1470
1460
1460
1460
1460
D160MD
D160LD
D180MD
D180MD
D180LD
D180LD
1380-75
1370-235
1360-595
1360-0
1340-750
1340-60
1300-435
1380-340
1370-470
1360-765
18.5
22.0
30.0
30.0
37.0
37.0
45.0
1460
1460
1460
1460
1470
1470
1470
D180MD
D180LD
D200LD
D200LD
D225SD
D225SD
D225MD
20.0
10.1
72.0
13.5
97.4
17.0
124.0
124.0
140.0
140.0
238.0
292.0
298.0
298.0
257.0
257.0
225TR4/185
225TR4/220
225TR4/1
225TR4/1*
225TR4/2
225TR4/2*
225TR4/3*
17.9
124.0
140.0
198.0
198.0
240.0
240.0
292.0
409.0
440.0
440.0
440.0
440.0
440.0
440.0
19.0
19.0
20.1
28.2
28.2
33.7
33.7
39.8
Frame
1300-0
1260-0
1200-0
180TR4/110
180TR4/150
180TR4/1
180TR4/1*
180TR4/2
180TR4/2*
17.0
Induction Motor
Fitted to TASC Unit
kW
rpm
1300-0
1260-0
1200-0
11.7
72.0
Speed Range with
Constant Torque (rpm)
IP23
IPS5
1305-1059
1300-900
1340-890
* FORCED COOLED - CODE 61 (50Hz Supply)
Code
A
B
C
E
F
61
J
Description
Fitted with NEMA output shaft.
Fitted with power applied or failsafe brake.
Coating of torque tube.
Terminal box in non standard position;
Range fitted.
Forced Cooled (50Hz).
Filters fitted to air-inlet grills.
K
L1
N
P
S
T
V
TASC UNIT CODES OPTIONS
Input shaft assembly instead of drive
motor.
110V Rotary transformer in Unit.
IP55 Protection.
IP44 Protection.
Constructed for temperatures below - 30°C.
Totally enclosed.
Motor voltage specified (and C.SA).
W1 TASC Unit without motor.
W2 TASC Unit with 'special' motor (to be
specified).
W5 TASC Unit with IP23 protection, but with
IP55 motor.
Y Thermistor fitted in rotary Transformer primary,
in airstream or both.
I Special paint a primer finish.