maxon motor
4-Q-DC Servoamplifier ADS 50/5
Operating Instructions
5
Functions
5.1
Inputs
5.1.1
Set value
The set value input is wired as a differential amplifier.
Input voltage range
-10 ... +10 V
Input
circuit
differential
Input resistance
20 k
Ω
(differential)
Positive set value
( + Set value)
>
( - Set Value)
negative motor voltage or current
motor shaft turns CCW
Negative set value
( + Set value)
<
( - Set Value)
positive motor voltage or current
motor shaft turns CW
5.1.2
Enable
If a voltage is given at “Enable”, the servoamplifier switches the motor voltage to
the winding connections. If the “Enable” input is not switched on or is connected
to the Gnd, the power stage will be highly resistant and will be disabled.
The “Enable” input is short-circuit protected.
Enable
Minimum input voltage
+ 4.0 VDC
Maximum input voltage
+ 50 VDC
Input resistance
15 k
Ω
Switching
time
typ 500
µ
s (by 5 V)
Disable
Minimum input voltage
0 VDC
Maximum input voltage
+ 2.5 VDC
Input resistance
15 k
Ω
Switching
time
typ 100
µ
s (by 0 V)
5.1.3
DC Tacho
Minimum input voltage
2.0 V
Maximum input voltage
50 V
Input resistance
14 k
Ω
Speed control range:
The speed range is set using Potentiometer
P3
n
max
(max. speed at maximum
set value).
For full speed control with ± 10 V, the tacho input voltage range must be at least
±2 V.
Example for DC-Tacho with 0.52 V / 1000 rpm:
2.0 V tacho voltage is equivalent to a speed of approx. 3850 rpm. If the full set
value range has been used, the lowest adjustable speed with the n
max
potenti-
ometer is 3850 rpm.
Lower speed ranges can be reached through a reduced set value range or by
using a DC tacho with a higher output voltage, such as 5 V / 1000 rpm.
July 2009 Edition / Doc. No. 538837-07 / Subject to change
maxon motor control
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