Power Dissipation - Emerson Control Techniques Epsilon Eb Series Reference Manual

Power Dissipation

In general, the drive power stages are 90 to 95 percent efficient depending on the actual point
of the torque speed curve the drive is operating. Logic power losses on the EN drive is 11 W
minimum to 21 W depending on external loading such as FM modules and input voltages.
Logic power losses on the Epsilon drive are 11 W with normal loads to 15 W with additional
loads such as external encoder and low input voltage (<22 VDC on A.P.S. or 120 VAC on
AC input).
The values shown in the table below represent the typical dissipation that could occur with
the drive/motor combination specified at maximum output power.
Drive Model
EN-204/NT-320
EN-204/MG-205
EN-204/MG-208
EN-204/MG-316
EN-208/NT-320
EN-208/NT-330
EN-208/NT-345
EN-208/NT-355
EN-208/MG-340
EN-208/MG-455
EN-214/NT-345
EN-214/NT-355
EN-214/MG-490
EN-214/MG-4120
Eb-202/NT-207
Eb-202/NT-212
Eb-202/MG-205
Eb-203/NT-207
Eb-203/NT-212
Eb-203/MG-208
Eb-203/MG-316
Eb-205/MG-316
Eb-205/MG-340
Eb-205/NT-212
Eb-205/NT-320
Eb-205/NT-330
Eb-205/NT-345
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Logic Power Losses Maximum Power Stage
(typ) Drive
(Pld) (Watts) (Pp) (Watts)
19
11
Specifications
Total
Losses Power Losses
(Watts)
105 124
30 52
50 72
82 104
135 154
175 194
185 204
211 230
160 182
200 222
192 211
221 240
300 322
430 452
25 36
30 41
25 36
30 41
55 66
55 66
60 71
72 83
88 99
55 66
88 99
88 99
88 99
201