Danfoss VLT AQUA Drive FC 202 Design Manual page 99

System Integration
3.8.12.5 Status Word according to
PROFIdrive Profile (STW)
The status word is used to notify a master (for example, a
PC) about the status of a slave.
Bit Bit=0
00 Control not ready
01 Drive not ready
02 Coasting
03 No error
04 Off 2
05 Off 3
06 Start possible
07 No warning
08
Speed≠reference
09 Local operation
10 Out of frequency limit Frequency limit OK
11 No operation
12 Drive OK
13 Voltage OK
14 Torque OK
15 Timer OK
Table 3.49 Status Word Bits
Explanation of the status bits
Bit 00, Control not ready/ready
When bit 00=0, bit 00, 01 or 02 of the control word is 0
(OFF 1, OFF 2 or OFF 3) – or the adjustable frequency drive
is switched off (trip).
When bit 00=1, the adjustable frequency drive control is
ready, but there is not necessarily power supply to the unit
present (in the event of external 24 V supply of the control
system).
Bit 01, Drive not ready/ready
Same significance as bit 00, however, there is a supply
from the power unit. The adjustable frequency drive is
ready when it receives the necessary start signals.
Bit 02, Coasting/Enable
When bit 02=0, bit 00, 01 or 02 of the control word is 0
(Off 1, Off 2 or Off 3 or coasting) – or the adjustable
frequency drive is switched off (trip).
When bit 02=1, bit 00, 01 or 02 of the control word is 1;
the adjustable frequency drive has not tripped.
Bit 03, No error/Trip
When bit 03=0, no error condition of the adjustable
frequency drive exists.
When bit 03=1, the adjustable frequency drive has tripped
and requires a reset signal before it can start.
Bit 04, On 2/Off 2
When bit 01 of the control word is 0, then bit 04=0.
When bit 01 of the control word is 1, then bit 04=1.
MG20N622
Design Guide
Bit=1
Control ready
Drive ready
Enable
Trip
On 2
On 3
Start not possible
Warning
Speed=reference
Bus control
In operation
Stopped, autostart
Voltage exceeded
Torque exceeded
Timer exceeded
Danfoss A/S © 09/2014 All rights reserved.
Bit 05, On 3/Off 3
When bit 02 of the control word is 0, then bit 05=0.
When bit 02 of the control word is 1, then bit 05=1.
Bit 06, Start possible/Start not possible
If [1] PROFIdrive has been selected in 8-10 Control Word
Profile, bit 06 is 1 after a switch-off acknowledgment, after
activation of Off2 or Off3, and after switching on the AC
line voltage, Start not possible is reset, with bit 00 of the
control word is set to 0 and bits 01, 02 and 10 are set to 1.
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
When bit 08=0, the current speed of the motor deviates
from the set speed reference value. This may occur, for
example, when the speed is being changed during start/
stop through ramp up/down.
When bit 08=1, the current speed of the motor
corresponds to the set speed reference value.
Bit 09, Local operation/Bus control
Bit 09=0 indicates that the adjustable frequency drive has
been stopped with [Stop] on the LCP, or that [Linked to
hand] or [Local] has been selected in 3-13 Reference Site.
When bit 09=1, the adjustable frequency drive can be
controlled through the serial interface.
Bit 10, Out of frequency limit/Frequency limit OK
When bit 10=0, the output frequency is outside the limits
set in 4-52 Warning Speed Low and 4-53 Warning Speed
High.
When bit 10=1, the output frequency is within the
indicated limits.
Bit 11, No operation/Operation
When bit 11=0, the motor does not turn.
When bit 11=1, the adjustable frequency drive has a start
signal, or the output frequency is higher than 0 Hz.
Bit 12, Drive OK/Stopped, autostart
When bit 12=0, there is no temporary overloading of the
inverter.
When bit 12=1, the inverter has stopped due to
overloading. However, the adjustable frequency drive has
not switched off (trip) and starts again after the
overloading has ended.
Bit 13, Voltage OK/Voltage exceeded
When bit 13=0, the voltage limits of the adjustable
frequency drive are not exceeded.
When bit 13=1, the direct voltage in the intermediate
circuit of the adjustable frequency drive is too low or too
high.
Bit 14, Torque OK/Torque exceeded
When bit 14=0, the motor torque is below the limit
selected in 4-16 Torque Limit Motor Mode and 4-17 Torque
Limit Generator Mode.
3 3
97