Rockwell Automation SP600 AC Drive User Manual Version 1.0 - Manual (Page 212)

12-82 SP600 AC Drive User Manual
Sets the lowest input value to the analog input 1 scaling block. Refer
to Analog In 1 Hi (322) for more information and a scaling example.
Selects drive response when an analog signal loss is detected.
(1.6 V = signal loss, 1.9 V = end of signal loss; 3.2 mA = signal loss,
3.8 mA = end of signal loss.)
One of the selections (1 = Fault) stops the drive on signal loss. All
other choices make it possible for the input signal to return to a
usable level while the drive is still running.
Important: Note that there is no signal loss detection while the
input is in bipolar voltage mode (see parameter 190).
323 Analog In 1 Lo
Range: 4.000 to 20.000 mA [0.001 mA]
-/+10.000 V [0.001 V]
0.000 to 10.000 V [0.001 V]
Default: 4.000 mA
Access: 0 Path: Inputs & Outputs>Analog Inputs
See also: 91, 92, 320
324 Analog In 1 Loss
Range: 0 = Disabled
1 = Fault
2 = Hold Input (use last frequency command)
3 = Set Input Lo (use Minimum Speed as frequency
command)
4 = Set Input Hi (use Maximum Speed as frequency
command)
5 = Go to Preset1 (use Preset 1 as frequency
command)
6 = Hold OutFreq (maintain last output frequency)
Default: 0 = Disabled
Access: 2 Path: Inputs & Outputs>Analog Inputs
See also: 91, 92, 190
!
ATTENTION: Setting parameter 324 to a value
other than 1 allows the input signal to return to a
usable level while the drive is running. If a lost analog
signal is restored while the drive is running, the drive
will ramp to the restored reference level at the rate
specified in Accel Time 1 (140), Accel Time 2 (141),
Decel Time 1 (142), and Decel Time 2 (143). Be
aware that an abrupt speed change may occur
depending upon the new reference level and the rate
specified in these parameters. Failure to observe this
precaution could result in bodily injury.