Lenze 931W - Manual (Page 29)

Control word / status word
Control word
6

29 K-HB 13.0001-EN 2.1
Bit Value Significance Meaning
0 1 ON Condition for the S3 status ”Ready for operation”: In this status the output
stage is supplied with voltage but not yet connected through (no voltage
at the motor).
0 OFF 1 Switched-off status: The drive returns to S2 status ”Ready to switch on”.
When the drive is switched on it is braked along a ramp to zero speed.
When the drive is at standstill, the output stage will be switched off.
1 1 No OFF 2 No coasting of the drive is requested.
0 OFF 2
(coasting of the
drive)
Coasting of the drive: The output stage is switched off and the motor
coasts without control to zero speed. After that, the drive changes to the
S1 status ”Switch-on inhibit”.
2 1 No OFF 3 No quick stop of the drive is requested.
0 OFF 3
(quick stop)
Quick stop: The drive is braked with maximum power to 0 min -1 . A quick
stop command cannot be cancelled once it has been issued. After quick
stop is terminated, the drive changes to the S1 status ”Switch-on inhibit”.
3 1 Enable operation The pulses for the output stage are switched on and the drive changes to
S4 status ”Operation enabled”. A voltage is applied to the motor
terminals. If a setpoint has been accepted before (see bit 6 STW), this
setpoint is approached.
0 Disable operation The drive is braked along the set deceleration ramp to 0 min -1 . After that,
the drive changes to S3 status ”Ready for operation”.
7 1 Acknowledging error
(0 → 1)
An error is acknowledged by a positive edge (0→1) on bit 7. The response
of the drive depends on the severity of the error. In case of fatal errors the
drive changes to S1 status ”Switch-on inhibit”.
0
10 1 Control via PLC
(requesting control
authority)
Requesting control authority: When a control authority is requested, the
status can be changed by a PLC via the PROFIBUS.
0 No control via PLC No control authority via the drive. Drive status cannot be influenced by
the PLC.
12-15 Device-specific These device-specific bits are not used.
Tab. 7 Overview of the non-controller-type specific bits of the control word