Siemens SINAMICS G180, Инструкция по установке и эксплуатации

Страница: 153 / 218

Operation
8.4 Controlling the external connections of the inverter
Installation and Operating Instructions SINAMICS G180
Operating Instructions, 02/2019, 4BS0751-007
151
Switch S2: 8 / 9 / 10 configures the analog input AI 1 as a current/voltage input, PTC
thermistor input, KTY84-130 input or PT100 input.
Table 8- 6 DIL switch "S2" - possible settings for AI 1
S2: 8 9 10 Function Control cable terminal
1 X 0 Current input -X2:50 - -X2:51
0 0 0 PTC thermistor input -X2:50 - -X2:51
0 1 0 KTY84 130 input -X2:50 - -X2:51
0 1 1 PT100 input -X2:50 - -X2:51
X X X Voltage input, only 0 V ... ± 10 V -X2:52 - -X2:51
8.4.6 Connecting encoders
An encoder is required for field-oriented control only, the standard control works without an
encoder.
Note
Unwanted operating state
If you do not connect up the encoder cables correctly, the loss of the encoder signal can give
rise to unwanted operating states in the inverter control system.
Connecting a sincos encoder to -X25
All encoder signals have a voltage level of 1 V
SS.
The encoder connection on the motor side is designed as a socket. For this version, the
manufacturer provides a complete encoder cable, e.g. ERN 387 from the company
Heidenhain, Item No. 0278599 with a length of 10 meters. You can also purchase an adapter
cable, Item No. 0278581. Ask the inverter manufacturer about other encoder cables.
The encoder connection on the inverter side is designed as a socket.
● Only use this encoder for field-oriented control with a speed accuracy < 1 %.
● Connect the encoder mechanically rigid to the motor.