Danfoss VLT series

7.2.1.6 Controlword in Gear Mode
Table 7.17 shows the structure of the Controlword. Table 7.18 denes the values for the available synchronization modes (bits
5 and 6). Table 7.19 denes the values for bit 9 of the Controlword.
15 10 9 8 7 6 5 4 3 0
See Table 7.2
Master sync
direction
Reserved
(0)
See Table 7.2 Synchronization mode
Reserved
(0)
See Table 7.2
MSB LSB
Table 7.17 Controlword in Gear Mode
Bit 6 Bit 5 Denition
0 0 Synchronize shortest way.
0 1 Synchronize according to slow down mode.
1 0 Synchronize according to catch up mode.
1 1 Velocity-controlled synchronization (during gear in).
Table 7.18 Denition of Bits 5 and 6 (Synchronization Modes)
Bit Value Denition
9 0 Not relevant for synchronization mode 11;
For all other modes: Master start distance is in the positive direction of the guide value.
1 Not relevant for synchronization mode 11;
For all other modes: Master start distance is in the negative direction of the guide value.
Table 7.19 Denition of Bit 9
7.2.1.7 Controlword in ISD Inertia Measurement Mode
Table 7.17 shows the structure of the Controlword. A value of 1 in bit 4 starts the inertia measurement procedure. It must
remain high as long as the procedure is running, otherwise it is aborted. Table 7.21 denes the values for bits 4 and 8 of the
Controlword.
15
1
0
9 8 7 6 5 4 3 0
See Table 7.2 Reserved (0) Halt See Table 7.2 Reserved (0)
Measurement
start
See Table 7.2
MSB LSB
Table 7.20 Controlword in ISD Inertia Measurement Mode
Bit Value Denition
4 0 Do not start the measurement or stop an ongoing measurement.
1 Start measurement.
8 0 Enable bit 4.
1 Stop axis according to halt option code (see chapter 7.20.7 Parameter 50-47: Halt Option Code (0x605D)).
Table 7.21 Denition of Bits 4 and 8
7.2.1.8 Controlword in Cyclic Synchronous Position Mode
The operation mode-specic bits and the Halt bit in the Controlword are ignored by the servo drive. The Halt function is
controlled by the control device.
Servo Drive Parameter Descr...
VLT
®
Integrated Servo Drive ISD
®
510 System
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