2 enable with 50% setpoint, Procedure, Details – NORD Drivesystems BU0020 User Manual
Page 93: Enable with 50% setpoint, 9 telegram examples
9 Telegram examples
BU 0020 GB-2612
93
9.2 Enable with 50% setpoint
A frequency inverter in the "Standby" status must be enabled for clockwise rotation with 50% setpoint.
The last response telegram was received as follows in the controller.
Procedure:
•
Check last status word (ZSW 0B 31)
•
Generate control word (STW 04 7F) and specify setpoint (SW1 20 00 (=50%))
•
Check response telegram (ZSW 0B 37, IW1 20 00)
Details:
•
Starting requirement (status word of frequency inverter):
Word
5
6
Byte
8
9
10
11
Designation
ZSW
IW1
Value
0B
31
00
00
•
The following telegram must be sent to the frequency inverter:
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.
Word
5
6
Byte
8
9
10
11
Designation
ZSW
IW1
Value
0B
37
20
00
Note
The status of MFR 1 is indicated in Bit 10 of the response telegram. Depending on the
programmed function and status, the status word may differ.
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