Danfoss VLT Series Design Manual page 163

VLT ® HVAC Drive Design Guide
7.11.2. Status Word According to FC Profile (STW) (Par. 8-10 = FC
profile)
Bit
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
Explanation of the Status Bits
Bit 00, Control not ready/ready:
Bit 00 = '0': The adj. 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 24 V 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 fre-
quency 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 adj. 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 = 0
Control not ready
Drive not ready
Coasting
No error
No error
Reserved
No error
No warning
Speed ≠ reference
Local operation
Out of frequency limit
No operation
Drive OK
Voltage OK
Torque OK
Timer OK
MG.11.B4.22 - VLT ® is a registered Danfoss trademark.
7. RS-485 Installation and Set-up
Bit = 1
Control ready
Drive ready
Enable
Trip
Error (no trip)
-
Triplock
Warning
Speed = reference
Bus control
Frequency limit OK
In operation
Stopped, auto start
Voltage exceeded
Torque exceeded
Timer exceeded
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