SSD RTS, User Manual

Page: 61 / 65

RTS 2nd Generation SERVO AMPLIFIER
61
PVD 3487 GB 03/2004
7.4.5 Time constant adjustment I = f(t) (R109)
The system time constant is factory set so the
servo amplifier accepts maximum current for one
second, starting from I = 0. After one second the
servo amplifier switches automatically to safety
mode.
Standard resistor
R109 is 562 k
Ω
for a maximum
current lasting 1 second. For a maximum current
lasting 2 seconds, resistor R109 must be 1210 k
Ω
.
7.4.6 Adjustment of function I = f(t) (R103)
Function I = f(t) is designed to protect the servo amplifier and servo motor if the mean current
required exceeds the rated current.
Resistor
R103 is used to adjust the tripping limit authorised by the servo amplifier.
RTS 3/10 - 40
% of rated
current
50 60 70 80 90 100
R103 (k
Ω
)
1.82 2.74 3.92 4.75 6.81 8.25
RTS 10/20 - 60
12/24 - 130
12/24 - 24/48
16/32 - 190
20/40 - 130
% of rated
current
20 30 40 50 60 70 80 90
R103 (k
Ω
)
1,5 2,21 3,32 4,99 7,5 12,1 20 43,2
CAUTION : For safety reasons the values of resistors R109 and R103 must not
be altered without authorisation from PARVEX - Warranty may be
affected.
4.7 M
R109
2 µF
10 K
+ 15 V
20 K
R 103