Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual User Manual
Page 17
Alarms
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
17
By setting Speed Ref A Hi to 60 Hz and Speed ref A Lo to 0 Hz, the speed
reference is scaled to the application needs. Because of the Input scaling and link
to the speed reference, 4 mA represents minimum frequency (0 Hz.) and 20 mA
represents Maximum Frequency (60 Hz.)
The input is configured to recognize a loss of signal and react accordingly to the
programming.
The loss action is chosen as Hold Input, meaning that the last received signal will
be maintained as the speed reference.
Finally, a Digital Output relay is configured to annunciate an alarm by turning on
a flashing yellow light mounted on the operator panel of the process control area.
Scale Block
P322
20mA
P091
60 Hz
P323
4mA
P092
0 HZ
324
327
[Analog In 1 Loss]
[Analog In 2 Loss]
Selects drive action when an analog signal loss is
detected. Signal loss is defined as an analog signal less
than 1V or 2mA. The signal loss event ends and normal
operation resumes when the input signal level is greater
than or equal to 1.5V or 3mA.
Default:
Options:
0
0
0
1
2
3
4
5
6
“Disabled”
“Disabled”
“Disabled”
“Fault”
“Hold Input”
“Set Input Lo”
“Set Input Hi”
“Goto Preset1”
“Hold OutFreq”
091
092
INP
U
TS &
OUT
PUTS
Digi
tal O
u
tpu
ts
380
384
388
[Digital Out1 Sel]
[Digital Out2 Sel]
[Digital Out3 Sel]
Selects the drive status that will energize a (CRx) output
relay.
(1)
Contacts shown in User Manual are in drive powered
state with condition present. Refer to “Fault” and
“Alarm” information.
(2)
Vector Control Option Only.
Default:
Options:
1
4
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21-
26
27
28
29
“Fault”
“Run”
“Run”
“Fault”
(1)
“Alarm”
(1)
“Ready”
“Run”
“Forward Run”
“Reverse Run”
“Auto Restart”
“Powerup Run”
“At Speed”
“At Freq”
“At Current”
“At Torque”
“At Temp”
“At Bus Volts”
“At PI Error”
“DC Braking”
“Curr Limit”
“Economize”
“Motor Overld”
“Power Loss”
“Input 1-6 Link”
“PI Enable”
(2)
“PI Hold”
(2)
“PI Reset”
(2)
381
385
382
386
383
002
001
003
004
218
012
137
157
147
053
048
184
Vector