Setup
Connection Specifications
maxon motor control
EPOS4 Positioning Controller
Document ID: rel5977
3-41
EPOS4 Module/Compact 50/8 Hardware Reference
Edition: February 2016
© 2016 maxon motor. Subject to change without prior notice.
The formula already takes the following into account:
• Maximum PWM duty cycle of 90%
• Controller’s max. voltage drop of 1 V @ 8 A
K
NOWN
VALUES
:
•
Operating torque M [mNm]
•
Operating speed n [rpm]
•
Nominal motor voltage U
N
[Volt]
•
Motor no-load speed at U
N
; n
O
[rpm]
•
Speed/torque gradient of the motor
Δ
n/
Δ
M [rpm/mNm]
S
OUGHT
VALUE
:
•
Supply vV
CC
[Volt]
S
OLUTION
:
3.4.2
Logic Supply
Separate power supply
The logic part of the controller may be supplied by separate supply voltage provided that it meets the
below stated minimum requirements.
• Module: The logic supply must be connected separately.
• Compact: If not supplied separately, the logic supply is internally connected to the power supply.
Table 3-44
Logic supply – Pin assignment
Module
Header Pin
Compact/CB
Connector
Pin
Signal
Description
A17
X2 | 2
+V
C
Nominal logic supply voltage (+10…+50 VDC)
A18…A22**
X2 | 1
GND
Ground
** Connect all pins in respect to the individual pin current rating.
Power supply requirements
Output voltage
+V
C
10…50 VDC
Absolute supply voltage
min. 8 VDC; max. 56 VDC
Min. output power
P
C
min. 3.5 W
V
CC
U
N
n
O
-------
n
Δ
n
Δ
M
---------
M
⋅
+
1
0.9
-------
⋅
⋅
1
V
[ ]
+
≥
