3 Function Principle of the Application Example
Control word (STW1) and status word (ZSW1)
The "SINA_SPEED" function block is used to cyclically control a SINAMICS G120
drive with the standard telegram 1.
Table 3-1: Transmission telegram to the drive
Address
PZD 1
PZD 2
Table 3-2: Receive telegram from the drive
Address
PZD 1
PZD 2
The following bits in the control word or the status word are influenced or displayed
in this application example.
Table 3-3: Used bits from control word 1
Bit
Value
0
0
OFF1
1
ON
1
0
OFF2
1
No OFF2
2
0
Quick stop (OFF3)
1
No quick stop (OFF3)
3
0
Lock operation
1
Enable operation
4
0
Lock ramp-function generator
1
Enable ramp-function
generator
5
0
Stop ramp-function generator
1
Continue ramp-function
generator
6
0
Lock setpoint
1
Enable setpoint
7
0
No fault acknowledgement
1
Acknowledge fault
10
0
No control by PLC
1
Master control by PLC
11
0
No inversion of direction
1
Inversion of direction
Drehzahlachse mit SINA_SPEED
Entry-ID: 109485727,
V1.0,
Name
STW1
NSOLL_A
Name
ZSW1
NIST_A
Meaning
Motor brakes with deceleration ramp p1121, the motor is
switched off at standstill (f < f
Upon positive edge, the converter switches to "Ready
for operation". If "Bit 3" = 1, the converter switches on
the motor.
Electrical supply of the motor is switched off. The motor
coasts.
Quick stop: The motor brakes with OFF3 deceleration
ramp p1135 until standstill.
Switch off motor
Motor ready for switch on
Ramp-function generator output is set to 0 (quickest
possible brake operation)
Possible to enable ramp-up function generator
The ramp-function generator output is "frozen"
The value of the ramp-function generator is updated
The motor brakes with deceleration ramp p1121
Motor can accelerate to the setpoint value with ramp-up
time p1120
Pending faults are not acknowledged
Pending faults are acknowledged with a positive edge
Process data invalid
Process data valid, master control via field bus
No inversion of the setpoint value
The setpoint value is inverted
06/2017
Content
Control word 1
Setpoint speed value
Content
Status word 1
Setpoint speed of the motor
Remark
)
min
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9
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