ABB ACS880+N5350 User Manual page 111

Cooling tower drives
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Parameter (Number)
Block Title
CONTROL AND
SPEED CONTROL STATUS
WORD (06.19)
STATUS WORDS
(Continued)
12-32 Startup Assistant & Parameters
Table 12-4 Level 1 Parameter Block Definitions
Selection (Value)
Default: Read Only
Range: 0000h - FFFFh
Speed control status word. This parameter is read-only.
Bit
0
1
2
3
4
5
6
7
8
9
10 -
15
Descriptions
Descriptions
Name
1 = Drive is running at zero speed, ie. the
absolute value of par. 90.01 Motor speed
for control has remained below 21.06 Zero
speed limit for longer than 21.07 Zero speed
delay.
Notes:
• This bit is not updated when mechanical
Zero speed
brake control is enabled by par. 44.06 and
the drive is modulating.
• During a ramp stop when the drive is
running forward, the
delay count runs whenever [90.01] < [21.06].
From the reverse direction, the delay count
runs whenever 90.01 > -[21.06].
1 = Drive is running in forward direction
Forward
above zero speed limit,
1 = Drive is running in reverse direction
Reverse
above zero speed limit, ie. [90.01] < -[21.06]
1 = Speed error window control active (see
Out of window
par. 24.41)
1 = Estimated speed feedback used in
motor control, ie. estimated speed is
Internal speed
selected by par. 90.41 or 90.46, or selected
feedback
encoder has faulted (par. 90.45)
0 = Encoder 1 or 2 used for speed feedback
1 = Encoder 1 used for speed feedback in
motor control
Encoder 1
0 = Encoder 1 faulted or not selected as
feedback
source of speed feedback (see par. 90.41
and 90.46)
1 = Encoder 2 used for speed feedback in
motor control
Encoder 2
0 = Encoder 2 faulted or not selected as
feedback
source of speed feedback (see par. 90.41
and 90.46)
Any constant
1 = A constant speed or frequency has been
speed request
selected; see par. 06.20
1 = Minimum limit of speed correction (in a
Follower speed
speed-controlled follower) has been reached
corr min lim
(see par. 23.39 - 23.41)
1 = Maximum limit of speed correction (in a
Follower speed
speed-controlled follower) has been reached
corr max lim
(see par. 23.39 - 23.41)
Reserved
3AXD50000011888

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