Brushless Motors

EC083A 83mm Brushless DC Motor

The EC083A series brushless DC motor is a high torque model brushless motor designed in a NEMA 34 package. It is offered in 6 motor lengths with continuous torque from 0.9 - 2.1 Nm.

Features:

Speeds up to 6,000 RPM
DC bus voltage up to 325 Vdc
NEMA 34 package
Capable of 24V Vdc bus systems
8 Pole neodymium design

Videos:
NEW! Pittman Express Motor Calculator Tutorial
How Motor Curves are Created and How to Use Them

Specifications +

MOTOR DATA	Units	EC083A-1	EC083A-2	EC083A-3	EC083A-4	EC083A-5	EC083A-6
Max DC Terminal Voltage	V	325	325	325	325	325	325
Max Speed (Mechanical)	rpm	6000	6000	6000	6000	6000	6000
Continuous Stall Torque	Nm	0.92	1.4	1.7	1.9	2.2	2.2
Continuous Stall Torque	oz-in	130	200	240	270	310	310
Peak Torque (Maximum)	Nm	2.9	4.5	5.2	5.9	6.8	6.9
Peak Torque (Maximum)	oz-in	410	640	740	830	970	970
Rotor Inertia	kg m2	0.000068	0.0001	0.00012	0.00016	0.0002	0.00024
Rotor Inertia	oz-in-s2	0.0096	0.014	0.018	0.022	0.029	0.034
Motor Weight	g	1400	2000	2500	3000	3500	4100
Motor Weight	oz	50	70	88	110	120	140

Dimensional Drawings +

Performance Curves +

EC083A-1 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

EC083A-2 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

EC083A-3 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

EC083A-4 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

EC083A-5 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

EC083A-6 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

NOTE: All values specified at 25°C ambient temperature. Peak values are theoretical and for reference only.

Winding Performance Data +

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EC083A-1	Units
Rated Voltage	V	60.0	76.0	96.0	152	305	305
Rated Torque	Nm	0.80	0.81	0.81	0.79	0.78	0.78
Rated Torque	oz-in	110	110	120	110	110	110
Rated Speed	rpm	6000	6000	6000	6000	6000	6000
Rated Current	A	31	23	18	12	9.9	6.3
Rated Power	W	500	510	510	500	490	490
No Load Speed	rpm	6000	6000	6000	6000	6000	6000
No Load Current	A	0.97	0.71	0.55	0.39	0.31	0.20
Torque Constant	Nm/A	0.0294	0.0405	0.0516	0.0736	0.0921	0.143
Torque Constant	oz-in/A	4.17	5.73	7.30	10.4	13.0	20.3
Voltage Constant	V/krpm	3.08	4.24	5.40	7.71	9.64	15.0
Terminal Resistance	Ω	0.0400	0.0700	0.110	0.240	0.370	0.920
Inductance	mH	0.14	0.26	0.43	0.88	1.39	3.34
Peak Current	A	110	81	63	42	36	22

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EC083A-2	Units
Rated Voltage	V	76.0	76.0	152	152	305	305
Rated Torque	Nm	1.2	1.3	1.2	1.2	1.2	1.2
Rated Torque	oz-in	180	180	180	180	170	170
Rated Speed	rpm	6000	6000	6000	6000	6000	6000
Rated Current	A	23	18	12	9.8	6.3	5.1
Rated Power	W	780	790	780	780	770	760
No Load Speed	rpm	6000	6000	6000	6000	6000	6000
No Load Current	A	0.65	0.51	0.33	0.28	0.18	0.15
Torque Constant	Nm/A	0.0606	0.0772	0.121	0.143	0.222	0.269
Torque Constant	oz-in/A	8.59	10.9	17.2	20.3	31.4	38.1
Voltage Constant	V/krpm	6.35	8.08	12.7	15.0	23.2	28.2
Terminal Resistance	Ω	0.0800	0.130	0.310	0.440	1.07	1.65
Inductance	mH	0.33	0.54	1.35	1.89	4.47	6.71
Peak Current	A	84	66	42	36	23	18

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EC083A-3	Units
Rated Voltage	V	76.0	96.0	152	305	305
Rated Torque	Nm	1.2	1.2	1.2	1.2	1.2
Rated Torque	oz-in	170	170	170	170	170
Rated Speed	rpm	6000	6000	6000	6000	6000
Rated Current	A	27	18	13	11	8.9
Rated Power	W	740	750	760	750	760
No Load Speed	rpm	6000	6000	6000	6000	6000
No Load Current	A	1.4	0.86	0.63	0.53	0.43
Torque Constant	Nm/A	0.0507	0.0797	0.109	0.130	0.159
Torque Constant	oz-in/A	7.18	11.3	15.4	18.5	22.6
Voltage Constant	V/krpm	5.31	8.35	11.4	13.7	16.7
Terminal Resistance	Ω	0.0400	0.100	0.180	0.260	0.410
Inductance	mH	0.17	0.42	0.78	1.13	1.69
Peak Current	A	120	75	54	45	36

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EC083A-4	Units
Rated Voltage	V	76.0	76.0	152	152	305	305
Rated Torque	Nm	1.3	1.3	1.3	1.3	1.3	1.3
Rated Torque	oz-in	190	190	180	190	180	180
Rated Speed	rpm	6000	6000	6000	6000	6000	6000
Rated Current	A	22	16	11	8.1	5.4	4.4
Rated Power	W	840	830	820	840	820	810
No Load Speed	rpm	6000	6000	6000	6000	6000	6000
No Load Current	A	1.1	0.73	0.51	0.37	0.26	0.21
Torque Constant	Nm/A	0.0702	0.0964	0.140	0.193	0.281	0.341
Torque Constant	oz-in/A	9.94	13.7	19.9	27.3	39.8	48.3
Voltage Constant	V/krpm	7.35	10.1	14.7	20.2	29.4	35.7
Terminal Resistance	Ω	0.0700	0.120	0.260	0.480	1.04	1.60
Inductance	mH	0.26	0.49	1.05	1.98	4.20	6.23
Peak Current	A	93	69	48	33	23	19

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EC083A-5	Units
Rated Voltage	V	76.0	96.0	121	152	305	305
Rated Torque	Nm	1.3	1.3	1.4	1.4	1.4	1.6
Rated Torque	oz-in	180	190	190	200	190	230
Rated Speed	rpm	6000	6000	6000	6000	6000	6000
Rated Current	A	24	19	17	12	9.7	6.9
Rated Power	W	790	840	860	890	860	1000
No Load Speed	rpm	6000	6000	6000	6000	6000	6000
No Load Current	A	1.4	1.1	0.92	0.64	0.52	0.32
Torque Constant	Nm/A	0.0634	0.0845	0.0951	0.137	0.169	0.274
Torque Constant	oz-in/A	8.98	12.0	13.5	19.5	23.9	38.8
Voltage Constant	V/krpm	6.64	8.85	9.96	14.4	17.7	28.7
Terminal Resistance	Ω	0.0400	0.0700	0.100	0.190	0.290	0.940
Inductance	mH	0.17	0.30	0.38	0.81	1.22	3.24
Peak Current	A	120	90	78	57	45	29

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EC083A-6	Units
Rated Voltage	V	76.0	76.0	152	152	305	305	305
Rated Torque	Nm	1.4	1.4	1.3	1.3	1.3	1.3	1.3
Rated Torque	oz-in	190	200	190	190	190	190	180
Rated Speed	rpm	6000	6000	6000	6000	6000	6000	6000
Rated Current	A	28	24	10	8.5	6.8	5.2	3.4
Rated Power	W	860	890	830	840	840	840	800
No Load Speed	rpm	6000	6000	6000	6000	6000	6000	6000
No Load Current	A	1.6	1.3	0.59	0.48	0.39	0.30	0.21
Torque Constant	Nm/A	0.0588	0.0706	0.153	0.188	0.235	0.306	0.442
Torque Constant	oz-in/A	8.33	9.99	21.6	26.6	33.3	43.3	62.6
Voltage Constant	V/krpm	6.16	7.39	16.0	19.7	24.6	32	46.3
Terminal Resistance	Ω	0.0400	0.0500	0.200	0.350	0.540	0.900	2.06
Inductance	mH	0.13	0.19	0.91	1.38	2.15	3.64	7.78
Peak Current	A	130	110	51	42	33	26	17

Wiring Diagram +

Color	Signal
Red	Phase R
White	Phase S
Black	Phase T
Bare	Case Ground

Note: EC083A Z-Series Commutation Encoder. See Encoder section for wire color and signal designations.

Encoders +

Z Encoder
The Z Series incremental encoders represents state of the art in ASIC sensor technology. This technology requires fewer components thereby increasing product quality while providing improved precision from a smaller package. Additionally, the precision of the commutation channels is superior to that typically achieved with Hall signals resulting in improved system performance. These units are factory mounted on PITTMAN dc motors and aligned to the motor’s electrical properties which allows “drop-in” replacement capability without the need to “initialize” each new motor. Connections to the encoder are made through the motor’s 16 pin connector referenced below.

Features:

Output Channels- Incremental A, B, C, & Commutation U, V, W
Differential Line Drivers – all 6 Channels
Commutation for 4 & 8 Pole Motors
Power Requirement – 200mA @5VDC
500KHz Operating Frequency – All Channels
Inertia – 0.00015 oz-in-sec²
RoHS Compliant to EU Directive 2002/95/EC
Factory Installed Only

Specifications

ENCODER DATA	SYMBOL	UNITS	ZA	ZC
Available Resolutions	-	-	1000	2000
Output	-	-	2-Channel Quadrature with index	2-Channel Quadrature with Index
Output Interface	-	-	TTL Compatible	TTL Compatible
Differential Line Driver			Yes	Yes
Commutation Poles			8 pole	8 pole
Supply Voltage	_V_cc	VDC	4.75 to 5.25	4.75 to 5.25
Supply Current	I_cc	mA	200 max	200 max
Max. Operating Frequency	f_max	kHz	500	500
Operating Temperature	θ_max	°C	-20 to +100	-20 to +100

Dimensional Drawings

Connection Chart

PIN	Color	Signal
1	Red	Vcc
2	Brown	Channel A
3	Blue	Channel B
4	Orange	Index I
5	Violet	Output U
6	White/Brown	Output V
7	White/Orange	Output W
8	White/Black	Case Ground
9	Black	Common
10	White	Channel A̅
11	Green	Channel B̅
12	Yellow	Index I̅
13	Grey	Output U̅
14	White/Red	Output V̅
15	White/Yellow	Output W̅
16	Bare	Cable Shield

Recommended Encoder Data Sheets
Z Encoder Data Sheet pdf

Alternate Encoder Data Sheets
C Encoder Data Sheet pdf

Drives +

Recommended Drives
BGE6050

Integrated Drives +

EC083A Series with Integrated Drive
The EC083A series brushless motor is available with an integrated drive for direct operation off a 120 VAC supply. The EC083A is an excellent choice for both power transmission and simple velocity control applications. It is offered in 1/4 and 1/3 HP ratings with continuous torques from 0.073 to 1.5 Nm.

Features:

Speeds up to 1750 or 3450 RPM
Line voltage input of 120 Vac
NEMA 34 mounting
Reversible

Specifications

MOTOR DATA	SYMBOL	UNITS	EC083A-1	EC083A-2	EC083A-3
Rated Voltage	V_r	V_AC	120	120	120
Minimum Voltage		V_AC	108	108	108
Maximum Voltage	V_T	V_AC	132	132	132
Rated Torque¹	T_r	Nm	0.915	0.734	1.514
Rated Torque¹	T_r	lb-in	8.1	6.5	13.4
Speed at Rated Torque¹	ω_r	rpm	1750	3450	1750
Current at Rated Torque¹	I_r	Amps	2.0	4.0	8.0
Rated Power¹	P_r	Watts	168	265	278
Peak Torque (2 sec.)	T_pk	Nm	0.915	0.734	1.514
Peak Torque (2 sec.)	T_pk	lb-in	8.1	6.5	13.4
Peak Current (2 sec.)	I_pk	Amps	2.0	4.0	8.0
No-Load Speed	ω_nl	rpm	1800	3600	1800
No-Load Current	I_nl	Amps	1.0	1.1	1.3
Rotor Inertia	J_r	kg m²	9.94E-05	9.94E-05	1.63E-04
Rotor Inertia	J_r	lb-in-s²	8.80E-04	8.80E-04	1.44E-03
Max. Winding Temp	Θ_MAX	°C	125	125	125
Direction Of Rotation	SE	Shaft End	Reversible	Reversible	Reversible
Weight	W_m	kg	2.80	3.80	4.80
Weight	W_m	lbs	6.2	8.4	20.6

Dimensional Drawings

Recommended Integrated Drive Data Sheets
Integrated Drive Data Sheet