Setup
Configuration of Power Supply
ESCON Module 24/2 Hardware Reference
3-14
CCMC | 2021-08 | rel9004
3.2
Configuration of Power Supply
Basically, any power supply may be used, provided it meets the minimal requirements stated below.
1)
Use the formula below to calculate the required voltage under load.
2)
Choose a power supply according to the calculated voltage. Thereby consider:
a)
During braking of the load, the power supply must be capable of buffering the recovered
kinetic energy (for example, in a capacitor).
b)
If you are using an electronically stabilized power supply, make sure that the overcurrent pro-
tection circuit is configured inoperative within the operating range.
Note
The formula already takes the following into account:
• Maximum PWM duty cycle of 100%
• Controller’s max. voltage drop of 1 V @ 2 A
KNOWN VALUES:
•
Operating torque M [mNm]
•
Operating speed n [rpm]
•
Nominal motor voltage U
N
[Volt]
•
Motor no-load speed at U
N
, n
0
[rpm]
•
Speed/torque gradient of the motor
Δ
n/
Δ
M [rpm/mNm]
SOUGHT VALUE:
•
Supply vV
CC
[Volt]
SOLUTION:
Power Supply Requirements
Output voltage
+V
CC
10…24 VDC
Absolute output voltage
min. 8 VDC; max. 28 VDC
Output current
Depending on load
• continuous max. 2 A
• short-time (acceleration, <4 s) max. 6 A
V
CC
U
N
n
O
-------
n
Δ
n
Δ
M
---------
M
⋅
+
⋅
1
V
[ ]
+
≥
