NORD Drivesystems BU0220 - Manual (Page 74)

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE
74 Subject to technical amendments BU 0220 GB-0912
7.3.2 Enable with 50% setpoint
A frequency inverter in the "Standby" status must be enabled for clockwise rotation with 50% setpoint. The
PPO type 1 (Section 7.2) is used, however only the PZD channel is considered.
Procedure:
1) Check last status word (e.g. ZSW 0B 31)
2) Generate control word (STW 04 7F) and specify setpoint (SW1 20 00 (=50%))
3) Check response telegram (ZSW 0B 37, IW1 20 00)
Procedure - Details
1) Check last status word (e.g. ZSW 0B 31)
word 5 6
Byte 8 9 10 11
Designation ZSW IW1
Value 0B 31 00 00
2) Generate control word (STW 04 7F) and specify setpoint (SW1 20 00 (=50%))
word 5 6
Byte 8 9 10 11
Designation STW SW1
Value 04 7F 20 00
The frequency inverter accelerates the motor in the ramp. When the inverter reaches 50% setpoint, it
responds with the following telegram.
3) Check response telegram (ZSW 0B 37, IW1 20 00)
word 5 6
Byte 8 9 10 11
Designation ZSW IW1
Value 0B 37 20 00