Modbus Instruction manual 7305/08
05/08
Modbus Instruction manual 73
The
statusword
displays the operation state.
Statusword
Bit 6 Bit 5 Bit 3 Bit 2 Bit 1 Bit 0
state
Switch on
disabled
Quick stop Fault Operation
enabled
Switched
on
Ready to
switch on
Switch on disabled 1 X 0 0 0 0
Ready to switch on 0 1 0 0 0 1
Switched on 0 1 0 0 1 1
Operation enabled 0 1 0 1 1 1
Quick stop active 0 0 0 1 1 1
Fault reaction active 0 X 1 1 1 1
Fault 0 X 1 0 0 0
Bits marked X are irrelevant
The Warning bit "Bit No. 7" can be set at any time. It displays a device-internal
warning message. The evaluation of the warning reason is done by readin
g out the
warning status with the parameter
Warnings 270.
The Remote bit "Bit No. 9" is set if the operation mode control via state machine
(
Local/Remote 412 = 1) has been set and the hardware release is available.
Logic linking of the digital control signals:
STOA AND STOB AND (Start clockwise OR Start anticlockwise)
Only if the lo
gic linking is true the inverter can be controlled via the. The logic inputs
for Start clockwise / Start anticlockwise can be connected directly
to ON (Start Clock-
wise
68, Start Aniclockwise.69).
Note: For motion control configurations (
Configuration 30 = x40) only the digital
input S1IND must be set. Start clockwise and start anticlockwise have no
function in motion control configurations.
The bit Target reached reached "Bit No. 10" is set when the reference value
specified has been reached.
In non motion control configurations (
Configuration 30 ≠ x40) target reached is
related to the reference speed object 0x6042
target velocity
. In the special case of
power failure regulation, the bit is also set if the power failure regulation has reached
the frequency 0 Hz (see operating instructions). For "Target reached“ there is a hys-
teresis (tolerance range), which can be set via the parameter
max. Control deviation
549 (see operating instructions).
The bit Internal limit active “Bit No. 11” displays that an internal limit is active.
This can, for example, be the present current limit, the torque limit or the over-
voltage limit. All the functions lead to the reference value being quit or not reached.
The bit Warning 2 “Bit No. 15” reports a warning which leads to a fault switch-off
of the frequency inverter within a short time. This bit is set if there is a warning for
motor temperature, heat sink/inside temperature, Ixt monitoring or mains phase fail-
ure.
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