TMCM-013 Manual (V1.14 / January 17th, 2006)
11
Copyright © 2005, TRINAMIC Motion Control GmbH & Co. KG
5.2.1.1 Chopper Modes 0 (SPI / Default Mode) and 1 (PWM)
In these two modes the maximum supply voltage (V
S
) of the motor must not exceed 22-25 times the
nominal motor voltage (V
N
), regarding the multiplication of I
COIL, MAX
and R
MOTOR
. A higher value would
lead to an excess of motor rating.
The minimum supply voltage has to be above two times the nominal motor voltage.
MOTOR
MAX
,
COIL
N
N
S
N
R
I
V
V
25
...
22
V
V
2
⋅
=
⋅
≤
≤
⋅
5.2.1.2 Chopper Mode 2 (PHASE)
In Table 5.1 and Figure 5.2 examples of maximum supply voltages V
S
regarding the current I
COIL
and
inductivity L of your motor are specified.
For further information, including a formula and description how to calculate the maximum voltage for
your setup, refer to 6.2.2.3
I
COIL
(RMS)
L (min.)
V
S
(max.)
800 mH
24 V
600 mH
18 V
400 mH
12 V
1000 mA
233 mH
7 V
1150 mH
24 V
860 mH
18 V
570 mH
12 V
700 mA
333 mH
7 V
1600 mH
24 V
1200 mH
18 V
800 mH
12 V
500 mA
466 mH
7 V
2300 mH
24 V
1720 mH
18 V
1150 mH
12 V
350 mA
666 mH
7 V
Table 5.1: Maximum Supply Voltage regarding Motor Current and Inductivity
