Logic Supply - maxon motor EPOS4 Module 50/5 Hardware Reference Manual

The formula already takes the following into account:
• Maximum PWM duty cycle of 90%
• Controller's max. voltage drop of 1 V @ 5 A
K
NOWN VALUES
S
OUGHT VALUE
S
OLUTION
3.4.2
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.
Module
Header Pin
A30...A36**
** Connect all pins in respect to the individual pin current rating.
Table 3-43
Output voltage
Absolute supply voltage
Min. output power
maxon motor control
EPOS4 Positioning Controller
EPOS4 Module/Compact 50/5 Hardware Reference
:
• Operating torque M [mNm]
• Operating speed n [rpm]
• Nominal motor voltage U
• Motor no-load speed at U
Speed/torque gradient of the motor Δn/ΔM [rpm/mNm]
•
:
• Supply voltage +V [Volt]
CC
:
U

N
≥ ------ - ⋅
+
V n

CC
n
O

Logic Supply

Compact/CB
Connector
Pin
A22 X1/X2 | 3
X1/X2 | 1
Logic supply – Pin assignment
+V
min. 8 VDC; max. 56 VDC
P
© 2018 maxon motor. Subject to change without prior notice.
[Volt]
N
; n [rpm]
N O
Δn
1

-------- - M ⋅ ⋅ ------ - 1 V [ ]
+

ΔM
0.9
Signal
+V
Logic supply voltage (+10...+50 VDC)
C
GND Ground
Power supply requirements
10...50 VDC
C
min. 3.5 W
C
Document ID: rel8003
Edition: May 2018
Setup
Connection Specifications
Description
3-39