Analog Outputs - Allen-Bradley PowerFlex 70 Reference Manual

Analog Outputs

Here, the deadband is "shifted" due to the 50 Hz limitation. The command
frequency from 0 to 3 volts on the analog input will be 15 Hz. After 3 volts, the
frequency will increase at a rate of 0.2 volts per hertz up to 9 volts. After 9 volts
on the analog input the frequency command will remain at 45 Hz.
Explanation
Each drive has one or more analog outputs that can be used to annunciate a wide
variety of drive operating conditions and values.
The user selects the analog output source by setting [Analog Out Sel].
342 [Analog Out1 Sel]
345 [Analog Out2 Sel]
Vector
Selects the source of the value that drives the analog
output.
Options
0 "Output Freq"
1 "Command Freq"
1* "Command Spd"
2 "Output Amps"
3 "Torque Amps"
4 "Flux Amps"
5
"Output Power"
6 "Output Volts"
7 "DC Bus Volts"
(1)
8 "PI Reference"
9 "PI Feedback"
10 "PI Error"
11 "PI Output"
12 "%Motor OL"
13 "%Drive OL"
14* "CommandedTrq"
(1)
15* "MtrTrqCurRef"
16* "Speed Ref"
17* "Speed Fdbk"
(1)
18* "Pulse In Ref"
(1)
19* "Torque Est"
(1)
20-23** "Scale Block1-4"
(1)
24** "Param Cntl"
* Vector Control Option Only
(1)
Refer to Option Definitions in User Manual.
Configuration
The PowerFlex 70 standard I/O analog output is permanently configured as a
0-10 volt output. The output has 10 bits of resolution yielding 1024 steps. The
analog output circuit has a maximum 1.3% gain error and a maximum 7 mV
offset error. For a step from minimum to maximum value, the output will be
within 0.2% of its final value after 12ms.
The PowerFlex 700 standard I/O analog output is permanently configured as a
0-10 volt output. The output has 10 bits of resolution yielding 1024 steps. The
analog output circuit has a maximum 1.3% gain error and a maximum 100 mV
offset error. For a step from minimum to maximum value, the output will be
within 0.2% of its final value after 12ms.
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
Default:
Options:
[Analog Out1 Lo] Value
[Analog Out1 Hi] Value
Param. 341 = Signed Param. 341 = Absolute
–[Maximum Speed] 0 Hz +[Maximum Speed]
–[Maximum Speed] 0 Hz +[Maximum Speed]
–[Maximum Speed] 0 Hz/RPM +[Maximum Speed]
0 Amps 0 Amps 200% Rated
–200% Rated 0 Amps 200% Rated
0 Amps 0 Amps 200% Rated
0 kW
0 kW 200% Rated
0 Volts 0 Volts 120% Rated Input Volts
0 Volts 0 Volts 200% Rated Input Volts
–100% 0% 100%
–100% 0% 100%
–100% 0% 100%
–100% 0% 100%
0% 0% 100%
0% 0% 100%
–800% Rated 0% 800% Rated
–200% Rated 0% 200% Rated
–[Maximum Speed] 0 Hz/RPM +[Maximum Speed]
–[Maximum Speed] 0 Hz/RPM +[Maximum Speed]
–25200.0 RPM 0 Hz/RPM +[Maximum Speed]
–800% 0% +800%
**Vector firmware 3.001 & later
Analog Outputs
0 "Output Freq" 001
002
See Table
003
004
005
007
006
012
135
136
137
138
220
219
377
378
31