Connecting The Inverter To The Fieldbus - Siemens sinamics g120 Operating Instructions Manual

Commissioning

4.2 Connecting the inverter to the fieldbus

4.2 Connecting the inverter to the fieldbus
Where can I find instructions for the fieldbus connection of the inverter?
Instructions for connecting to a fieldbus can be downloaded from the Internet:
● Application examples (http://support.automation.siemens.com/WW/view/en/60733299)
● Operating Instructions: CU250S-2 operating instructions
(https://support.industry.siemens.com/cs/ww/en/view/109478829)
● "Fieldbuses" function manual: Manuals for the Control Unit
(http://support.automation.siemens.com/WW/view/en/30563628/133300)
Example telegram
Telegram 1
Further information is provided in the Internet:
● Operating Instructions: Inverter telegrams without configured basic positioner
● "Basic positioner" function manual: Telegrams with configured basic positioner
Manuals for the Control Unit
(http://support.automation.siemens.com/WW/view/en/30563628/133300).
Control word 1 (STW1), PZD receive word 1 (word: r2050[0], bits: r2090.00 ... r2090.15)
Bit Meaning
0 0 = OFF1
0 → 1 = ON
1 0 = OFF2
1 = No OFF2
2 0 = Quick stop (OFF3)
1 = No quick stop (OFF3)
3 0 = Inhibit operation
1 = Enable operation
24
Explanation
The motor brakes with the ramp-down time p1121 of the ramp-function generator. The
inverter switches off the motor at standstill.
The inverter goes into the "ready" state. If, in addition bit 3 = 1, then the inverter
switches on the motor.
Switch off the motor immediately, the motor then coasts down to a standstill.
Precondition in order to be able to switch on the motor using bit 0 (ON command).
The motor brakes with the OFF3 ramp-down time p1135 down to standstill.
Precondition in order to be able to switch on the motor using bit 0 (ON command).
Switch off the motor immediately → motor coasts down to a standstill.
Precondition in order to be able to switch on the motor using bit 0 (ON command).
Abbreviation Explanation
STW1 Control word 1
ZSW1 Status word 1
PZD01/02 Process data 16-bit
NSOLL_A Speed setpoint 16-bit
NIST_A Actual speed value 16-bit
Compact Operating Instructions, 01/2016, A5E37058195B AA
CU250S-2 Control Units