Setup
Connection Specifications
maxon motor control
3-48
Document ID: rel8399
EPOS4 Positioning Controller
Edition: November 2018
EPOS4 Module/Compact 50/8 Hardware Reference
© 2018 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 a separate supply voltage provided that it meets the
below stated minimum requirements.
For the voltage supply observe the following:
• Module:
You will need to provide both, logic supply and power supply.
• Compact:
Either
use two cables, the «Power Cable» (275829) to provide the logic supply and the «Power
Cable High Current» (520850) to provide the power supply.
Or
use just one cable, the «Power Cable High Current» (520850) to provide the power supply. In this
case, the logic supply is internally connected to the power supply voltage.
Table 3-48
Logic supply – Pin assignment
Module
Header
Pin
Compact/CB
Connector
Pin
Signal
Description
A17
X2 | 2
+V
C
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
[ ]
+
≥
