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7.11.2 Status Word According to FC Profile
(STW) (
8-10 Control Profile
= FC
profile)
Output freq.
STW
Bit
no.:
Slave-master
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
130BA273.10
Figure 7.17
Bit
Bit = 0
Bit = 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
Triplock
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
Timer OK
Timer exceeded
Table 7.36
Explanation of the Status Bits
Bit 00, Control not ready/ready:
Bit 00 = ’0’: The Adjustable frequency drive trips. Bit 00
= ’1’: The Adjustable frequency drive controls are ready but
the power component does not necessarily receive any
power supply (in case of external 24V supply to controls).
Bit 01, Drive ready:
Bit 01 = ’1’: The Adjustable frequency drive is ready for
operation but the coasting command is active via the
digital inputs or via serial communication.
Bit 02, Coasting stop:
Bit 02 = ’0’: The Adjustable frequency drive releases the
motor. Bit 02 = ’1’: The Adjustable frequency drive starts
the motor with a start command.
Bit 03, No error/trip:
Bit 03 =’0’: The Adjustable frequency drive is not in fault
mode. Bit 03 = ’1’: The Adjustable frequency drive trips. To
re-establish operation, enter [Reset].
Bit 04, No error/error (no trip):
Bit 04 = ’0’: The Adjustable frequency drive is not in fault
mode. Bit 04 = “1”: The Adjustable frequency drive shows
an error but does not trip.
Bit 05, Not used:
Bit 05 is not used in the status word.
Bit 06, No error / triplock:
Bit 06 = ’0’: The Adjustable frequency drive is not in fault
mode. Bit 06 = “1”: The Adjustable frequency drive is
tripped and locked.
Bit 07, No warning/warning:
Bit 07 = ’0’: There are no warnings. Bit 07 = ’1’: A warning
has occurred.
Bit 08, Speed≠ reference/speed = reference:
Bit 08 = ’0’: The motor is running but the present speed is
different from the preset speed reference. For example, it
might be the case when the speed ramps up/down during
start/stop. Bit 08 = ’1’: The motor speed matches the
preset speed reference.
Bit 09, Local operation/bus control:
Bit 09 = ’0’: [STOP/RESET] is activated on the control unit
or
Local control
in
3-13 Reference Site
is selected. You
cannot control the Adjustable frequency drive via serial
communication. Bit 09 = ’1’ It is possible to control the
Adjustable frequency drive via the serial communication
bus / serial communication.
Bit 10, Out of frequency limit:
Bit 10 = ’0’: The output frequency has reached the value in
4-11 Motor Speed Low Limit [RPM]
or
4-13 Motor Speed High
Limit [RPM]
. Bit 10 = "1": The output frequency is within
the defined limits.
Bit 11, No operation/in operation:
Bit 11 = ’0’: The motor is not running. Bit 11 = ’1’: The
Adjustable frequency drive has a start signal or the output
frequency is greater than 0 Hz.
RS-485 Installation and Set...
VLT
®
HVAC Drive Design Guide
MG11BB22 - VLT
®
is a registered Danfoss trademark
7-21
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7
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