For devices of the generation SD4x the current will be limited at rotating field frequen-
cies < ƒ
derating
as shown in the following figure.
Fig. 3: Current derating at low output frequencies
f [Hz]
I
rated
I
peak
I [A]
I
rated (0 Hz)
I
peak (0 Hz)
f
derating
Fig. 3: Current derating at low output frequencies
5.4.5 S6 Duty Type
Fig. 4: Continuous-operation periodic duty (S6)
I-S 1 = 100 %
I-S6 = 125 %
I-S6_ NoLoad
= 40 %
72 s
48 s
120 s
Ip
[%]
t
[s]
Fig. 4: Continuous-operation periodic duty (S6)
5.4.6 Technical Data of Interfaces
Interface Property Value
Interface type RS422 (5 V)
Encoder supply 5.3 V
5 MHz per trackCount frequency
20 MHz after quadruplication
Short-circuit proof Yes
X6 encoder
▶ quadrature A/B, pulse/direction, up/
down, 2.5 Mbaud encoder, BISS-C,
5 V pulse encoder (compatible with
RS422)
Encoder failure monitoring Yes
RS232 (operating terminal) EIA/TIA-232-F compliant
RS485 (Modbus RTU) TIA/EIA-485-A compliant
X10 serial interfaces
CAN (CANopen) ISO 8482:1993 compliant
Working range ±10 V
Max. input voltage ±12 V
Resolution 14 Bit
Linearity < 0.1 %
Offset error < 0.1 %
Input impedance 10 kΩ
X15 analog input
▶ differential
Sampling rate 4 kHz
Tab. 4: Technical data of the interfaces
21Drive Amplifier SD4B - Hardware Description
Drive Amplifier SD4B
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