5.4.2 Status Word according to Drive Profile (STW)
→
Illustration 5.2: (par. O-10
Control Word Profile
)
Bit
Bit value = 0
Bit value = 1
00
Control not ready
Control ready
01
Drive not ready
Drive ready
02
Coasting
Enable
03
No error
Trip
04
No error
Error (no trip)
05
Reserved
-
06
No error
Trip lock
07
No warning
Warning
08
Speed
≠
reference
Speed = reference
09
Local operation
Bus control
10
Out of frequency limit
Frequency limit ok
11
No operation
In operation
12
Drive ok
Stopped, auto start
13
Voltage ok
Voltage exceeded
14
Torque ok
Torque exceeded
15
Thermal ok
Thermal exceeded
Explanation of the Status Bits
Bit 00, Control ready:
Bit 00 = ‘0’ means that the frequency converter has tripped. Bit 00 = ‘1’ means
that the frequency converter controls are ready, but that the power compo-
nent is not necessarily receiving any power supply (in the event of external
24 V supply to controls).
Bit 01, Drive ready:
Bit 01 = ‘1’. The frequency converter is ready for operation.
Bit 02, Coasting stop:
Bit 02 = ‘0’. The frequency converter has released the motor. Bit 02 = ‘1’. The
frequency converter can start the motor when a start command is given.
Bit 03, No error/Trip:
Bit 03 = ‘0’ means that the frequency converter is not in fault mode. Bit 03 =
‘1’ means that the frequency converter is tripped, and that a reset signal is
required to re-establish operation.
Bit 04, No error/Error (no trip):
Bit 04 = ‘0’ means that the frequency converter is not in fault mode. Bit 04 =
‘1’ means that there is a frequency converter error but no trip.
Bit 05, Reserved:
Bit 05 is not used in the status word.
Bit 06, No error / Trip lock:
Bit 06 = ‘0’ means that the frequency converter is not in fault mode. Bit 06 =
‘1’ means that the frequency converter is tripped, and locked.
Bit 07, No warning/Warning:
Bit 07 = ‘0’ means that there are no warnings. Bit 07 = ‘1’ means that a warning
has occurred.
Bit 08, Speed
≠
reference/Speed = reference:
Bit 08 = ‘0’ means that the motor is running, but that the present speed is
different from the preset speed reference. For example, this might occur while
the speed is being acceled/deceled during start/stop. Bit 08 = ‘1’ means that
the present motor speed matches the preset speed reference.
Bit 09, Local operation/Bus control:
Bit 09 = ‘0’ means that [STOP/RESET] is activated on the control unit, or that
Local control in par. F-02
Operation Method
is selected. It is not possible to
control the frequency converter via serial communication. Bit 09 = ‘1’ means
that it is possible to control the frequency converter via the network/ serial
communication.
Bit 10, Out of frequency limit:
Bit 10 = ‘0’, if the output frequency has reached the value in par. F-18
Motor
Speed Low Limit [RPM]
or par. F-17
Motor Speed High Limit [RPM]
. Bit 10 = ‘1’
means that the output frequency is within the defined limits.
Bit 11, No operation/In operation:
Bit 11 = ‘0’ means that the motor is not running. Bit 11 = ‘1’ means that the
frequency converter has a start signal or that the output frequency is greater
than 0 Hz.
Bit 12, Drive OK/Stopped, auto start:
Bit 12 = ‘0’ means that there is no temporary over temperature on the inverter.
Bit 12 = ‘1’ means that the inverter has stopped because of over temperature,
but that the unit has not tripped and will resume operation once the over
temperature stops.
Bit 13, Voltage OK/Voltage exceeded:
Bit 13 = ‘0’ means that there are no voltage warnings. Bit 13 = ‘1’ means that
the DC voltage in the frequency converter’s intermediate circuit is too low or
too high.
Bit 14, Torque OK/Torque limit exceeded:
Bit 14 = ‘0’ means that the motor current is lower than the torque limit selected
in par. F-40 and F-41 Torque limit. Bit 14 = ‘1’ means that the torque limit in
par. F-40 and F-41 Torque limit has been exceeded. The nominal torque can
be read in par. DR-16
Torque [Nm]
.
Bit 15, Thermal OK/limit exceeded:
Bit 15 = ‘0’ means that the timers for both motor thermal protection and drive
thermal protection, have not exceeded 100%. Bit 15 = ‘1’ means that one of
the limits has exceeded 100%.
Modbus TCP
30
5
