Siemens SIDOOR ATD4 W Series - Page 320

The table below describes the assignments of the bits in control word 1.
Table A-13 Control word 1 (STW1)
Bit Description
0 ON / OFF 1 (0 → 1)
1 OFF2 (coast down of the drive), after a ramp down the motor is switched to the free-running
mode (deenergize).
2 OFF3 (rapid stop of the drive)
3 Operation enable (drive start)
4 Reserved
5 Reserved
6 Reserved
7 Acknowledge fault (0 → 1)
8 Reserved
9 Reserved
10 Control by PLC
11 ... 15 Reserved
The following overview describes the relevant bits in control word 1. See also Figure 5-4
Sequential control state graph (Page 163).
Table A-14 Explanation of bits in STW1
Bit Description Val‐
ue
Remarks
0 ON / OFF1 1 Switch drive ready for operation (master switched on and voltage ready)
0 Not ready for switching on (master switched o󹪜 and voltage o󹪜)
Shutdown according to de󹪝ned ramp → corresponds to stop
Note: The positive edge is decisive here (0 → 1).
1 OFF2
(drive coasts down)
1 OFF2 command is canceled
Does not run down to standstill
0 Coast down motor (coasts down to a standstill) → After a ramp down the motor is
switched to the free-running mode (deenergize).
2 OFF3
(Rapid stop of the
drive)
1 OFF3 commands are canceled
0 Motor stop
3 Operation enable
(drive start)
1 Execution of drive orders (evaluation of technology control words)
0 No execution of drive orders
7 Acknowledge fault 1 Acknowledge fault
0 No signi󹪝cance
Note: The positive edge is decisive here (0 → 1).
Appendices
A.1 Structure of user data/process data
ATD4xxW for industrial applications
318 System Manual, 06/2022, A5E51901827B AA