Siemens SINAMICS S120 Installation And Start-Up Manual page 103

STW1 (status word 1)
See function diagram [2452].
Table 4-8 Description of STW1 (status word 1)
Bit Meaning
0 Ready to power up
1 1 Ready Ready
2 Operation enabled
3 Fault active
4 Coasting active (OFF2)
5 Fast stop active (OFF3)
6 6 Power up inhibit active Power-up inhibit active
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Comments
1 Ready to power up
Power supply on, electronics initialized, line
contactor released if necessary, pulses inhibited.
0 Not ready to power up
1 Ready
Voltage at Line Module (i.e. line contactor closed
(if used)), field being built up.
0 Not ready
Cause: no ON command available
1 Operation enabled
Enable electronics and pulses, then ramp up to
active setpoint.
0 Operation inhibited
1 Fault active
The drive is faulty and is, therefore, out of
service. The drive switches to Power-on inhibit
once the fault has been acknowledged and the
cause has been remedied.
The active faults are stored in the fault buffer.
0 No fault present
There is no active fault in the fault buffer.
1 No OFF2 active
0 Coasting active (OFF2)
An OFF2 command is active.
1 No OFF3 active
0 Fast stop active (OFF3)
An OFF3 command is active.
1 Power-up inhibit
A restart is only possible through OFF1 followed
by ON.
0 No power-up inhibit
Power up is possible.
Communication via PROFIBUS
Cyclic communication
BO:
r0899.0
BO:
r0899.1 r0899 1
BO:
r0899.2
BO:
r2193.3
BO: BO
r0899.4
BO: BO
r0899.5
BO:
r0899.6 r0899 6
BICO
4-103