Specifications

RTS 2nd Generation SERVO AMPLIFIER
59
PVD 3487 GB 03/2004
7.4.2 Rated speed selection (R105)
Resistor R105 calibrates the useful speed of the
application. For a speed reference of ± 10 V, the
speed corresponding in rpm to the servo motor will
be determined by R105 according to the table
below.
Calibration accuracy supposes that R104
calibration value of the tacho is correctly set.
The "SPEED ADJUST" potentiometer on the front
panel allows easy fine adjustment of speed.
Turning it clockwise increases speed for a given
reference.
Speed Nn (rpm)
R 105 (kΩ)
700
770
869
950
1055
1200
1280
1400
1590
1650
1750
1800
1920
2100
2330
2600
2820
3100
3420
3700
4040
4400
4900
5200
274
221
182
150
121
110
100
82.5
68.1
56.2
47.5
39.2
The equipment may be adapted for speeds lower than those shown above but this hinders servo
amplifier performance with regard to drift and gain. The maximum value not to be exceeded for
R105 is 4.75 MΩ.
U - RI
S3
TACHO selection or U - RI
Offset
R105
R102
C102
10 K
Fine speed adjustment
39 K