NORD Drivesystems BU0220 - Manual (Page 72)

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE
72 Subject to technical amendments BU 0220 GB-0912
7.3 Example telegrams
7.3.1 Switch- on disabled → Standby
A frequency inverter is to be switched from the "Switch-on disabled" status (STW Bit 0 – 0), which is active
when the device is switched on, to the "Standby" status (STW Bit 0 = 1). 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 70)
2) Generate control word (STW 04 7E)
3) Check response telegram (ZSW 0B 31)
Procedure - Details
1) Check last status word (ZSW 0B 70)
word 5 6
Byte 8 9 10 11
Designation ZSW IW1
Value 0B 70 00 00
Bit Value Value
HEX
Meaning
15 0 0 Parameter set Bit 1 off
14 0 Parameter set Bit 0 off
13 0 Reserved
12 0 Rotation left is off
11 1 W Rotation right is on
10 0 Reference value undershot
9 1 Bus controller
8 1 Setpoint = actual value
7 0 7 No warning
6 1 Starting disabled
5 1 No emergency stop
4 1 Voltage not disabled
3 0 0 No fault
2 0 Operation disabled
1 0 Not ready for operation
0 0 Not on standby
2) Generate control word (STW 04 7E)
The frequency inverter is set to Standby status with the following telegram.
word 5 6
Byte 8 9 10 11
Designation STW SW1
Value 04 7E 00 00