Control word:
The device control commands are triggered by the following bit pattern in the
Control
word:
Control word
Command
Bit 7
Bit 3
Bit 2
Bit 1
Bit 0
Transitions
Fault
reset
Enable
operation
Quick
stop
Enable
voltage
Switch on
Shutdown
X
X
1
1
0
2, 6, 8
Switch on
X
0
1
1
1
3
Switch on
X
1
1
1
1
3
Disable voltage
X
X
X
0
X
7, 9, 10, 12
Quick stop
X
X
0
1
X
7, 10, 11
Disable operation
X
0
1
1
1
5
Enable operation
X
1
1
1
1
4
Fault reset
0
1
x
x
x
x
15
Bits marked X are irrelevant
State transition 3 (command “Switch on” [0x07]) is only processed if bit no. 4 “Volt-
age enabled” of the Status word is set.
State transition 4 (command “Enable operation” [0x0F]) is only processed if the re-
lease is set via hardware contacts STO.
If the hardware release via STO is not set, the frequency inverter remains in state
“Switched On” [0x33] until the hardware release is set via STO.
If in state “Operation enable” [0x37] the STO hardware release is reset, the state is
switched internally into state “Switched On” [0x33].
In configurations with motion control (Parameter
Configuration
30 = x40) consider
the following points:
•
State transition 4’ is not available.
•
In status “5 – Operation enabled 0x37” an additional start signal has to be set
via the “High-Byte” of the control word to start a motion of the motor. The
start signal of this Motion Control Interface (MCI) is described in chapter 14.4.
To change into another MCI operation mode Object
•
The controller release (STOA and STOB) must be set. Start clockwise and
start anticlockwise have no function in motion control configurations.
In configurations without motion control (Parameter
Configuration
30 ≠ x40) con-
sider the following points:
•
State transition 4’ is available and is only processed if bit no. 4 “Voltage ena-
bled” of the Status word is set. This function is for downward compatibility to
older software versions.
•
The inverter can only be controlled via the state machine if the logic linking is
true. The logic inputs for Start clockwise / Start anticlockwise can be connect-
ed directly to ON/OFF (p.68, p.69).
The controller release (STOA and STOB) must be set.
Therefore this results in:
Release: ( = STOA AND STOB) AND (Start clockwise OR Start anticlockwise)
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