Siemens SIDOOR AT40 System Manual

Controllers
6.11 Structure of user data/process data
AT40, ATD400V, ATD400K, ATD4xxW, ATD400S, ATE250S, ATD400T
System Manual, 06/2016, A2B00096162-AN
205
6.11.2.1
STW1 - control word (CtrlW)
Control word -1 (STW1) is identical to the specification in the PROFIBUS profile "Variable-
speed drives".
Bits 0 to 10 correspond exactly to the specifications for the PROFIBUS profile "Variable-
speed drives". The use and non-use of specific bits is marked accordingly.
The table below describes the assignments of the bits in control word 1.
Table 6- 71 Control word 1 (STW1)
Bit
Description
0
ON / OFF 1 (0 → 1)
1
OFF2 (drive coasts down)
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 Image 6-33
Sequential control state graph (Page 216).
Table 6- 72 Explanation of bits in STW1
Bit
Description
Value
Remarks
0 ON / OFF1
1
Switch drive ready for operation (master switched on and voltage ready)
0 Not ready for switching on (master switched off and voltage off)
Shutdown according to defined 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
Motor coasts down (runs down to standstill) → corresponds to 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 significance
Note: The positive edge is decisive here (0 → 1).

Siemens SIDOOR AT40 Specifications

General

Type	Controller
Model	SIDOOR AT40
Supply voltage	24 V DC
Power consumption	5 W
Number of relay outputs	4
Operating temperature	-25 °C to +55 °C
Protection class	IP20