REXROTH EcoDrive Cs - Technical Data; Basics

8-6 Motors Rexroth EcoDrive Cs Drives
DOK-ECODR3-DKC**.3-CS*-PR02-EN-P
8.3 Technical Data
Basics
Thermal Limit Conditions
The motor data and characteristic curves are determined using MSM
motors under the following conditions:
• Environmental temperature approx. 40 °C
• Structure not insulated
• Permissible winding overtemperature ∆T = 80 K (related to
environment)
• If motors with the optional holding brake are concerned, the data are
always specified for motors with holding brake.
Operating Modes
Rexroth motors are documented according to the test criteria and
measuring methods of EN 60034-1. The characteristic curves specified
correspond to the operating modes S1 or S6.
t
Dt
P
Dt
V
T
C
t
P
Q
max
P
V
Q
P
Q
max
P
V
Q
Operating mode S6Operating mode S1
P: Load
P
V
: Electric losses
Θ: Temperature
Θ
max
: Highest temperature (motor housing)
t: Time
T
C
: Cycle duration
∆t
P
: Operating time with constant load
∆t
V
: Idle time
Fig. 5-1: Operating modes according to EN 60034-1: 1998
ON time
The operating mode S6 is supplemented by specification of the ON time
(ED) in ≤100%. The ON time is calculated with the following formula:
%)(% 100100
2
⋅=⋅
∆
=
KB
d
C
P
M
M
T
t
ED
ED: Cyclic duration factor in %
T
C
: Cycle duration
∆t
P
: Operating time with constant load
M
d
: Continuous torque
M
KB
: Short time operating torque
Fig. 5-2: Cyclic duration factor
Courtesy of CMA/Flodyne/Hydradyne ▪ Motion Control ▪ Hydraulic ▪ Pneumatic ▪ Electrical ▪ Mechanical ▪ (800) 426-5480 ▪ www.cmafh.com