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Input Modes
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013 109
Input Modes The PowerFlex family of drives does not use a direct choice of 2-wire or 3-wire
input modes, but allows full configuration of the digital I/O. As a means of
defining the modes used, consider the following:
2-Wire Control
This input mode is so named because it
only utilizes one device and 2 wires to
control both the Start (normally
referred to as “RUN” in 2-wire) and Stop
functions in an application.
• A maintained contact device, such
as a thermostat, for example,
closes its contact to Run the drive
and opens to Stop the drive.
• In other applications, the
maintained device (such as a limit
switch), can directly control both
Run/Stop and direction control…
• Or, a combination of the two may
be desirable.
3-Wire Control
This input mode utilizes 2 devices
requiring 3 wires to control the Start
(proper term for 3-wire) and Stop
functions in an application. In this case,
momentary contact devices, such as
pushbuttons are used.
• A Start is issued when the Start
button is closed, but unlike 2-wire
circuits, the drive does not Stop
when the Start button is released.
Instead, 3-wire control requires a
Stop input to Stop the drive.
• Direction control is accomplished
either with momentary inputs…
• Or, with a maintained input.
Run/Stop
PWR
STS
PORT
MOD
NET A
NET B
Run Forward
Run Reverse
PWR
STS
PORT
MOD
NET A
NET B
Run
PWR
STS
PORT
MOD
NET A
NET B
Forward/Reverse
Stop
Start
PWR
STS
PORT
MOD
NET A
NET B
Stop
Start
Forward
Reverse
PWR
STS
PORT
MOD
NET A
NET B
Stop
Start
PWR
STS
PORT
MOD
NET A
NET B
Forward/Reverse
- Reference Manual 1
- Important User Information 2
- Summary of Changes 3
- New and Updated 3
- Information 3
- Table of Contents 5
- Chapter 1 9
- General Precautions 10
- Detailed Drive Operation 11
- Alarm Status Indication 15
- INPUTS & OUTPUTS 17
- Analog Input Configuration 19
- Analog Inputs 20
- Analog Scaling 22
- Output Hertz 23
- Input mA 24
- Torque Ref % 26
- Input Volts 26
- Value Display 28
- Cable Selection 28
- Explanation 31
- Output Current 32
- Output Voltage 32
- Table 1 Software Filters 34
- Auto/Manual 37
- Autotune 40
- PowerFlex 700VC 44
- Speed Control - Reference 46
- (2.0 ms) 46
- Speed Control - Regulator 48
- (1.0 ms) 48
- Torque Control 49
- (0.25ms) 49
- Process Trim 50
- MOP Control 51
- Block Diagrams 52
- Inputs & Outputs - Analog 53
- Control Logic 54
- (2.0ms) 54
- Inverter Overload IT 55
- Bus Regulation [Bus Reg Gain] 56
- Single Seq 500 S/s 56
- Operation 57
- Motor Speed 57
- Proportional Channel 58
- Integral Channel 58
- Bus Regulation 59
- Table 3 60
- Table 4 61
- Carrier (PWM) Frequency 62
- EMC Instructions 63
- Table 8 Recommended Filters 65
- Current Limit 66
- Datalinks 67
- Decel Time [Decel Time 1, 2] 69
- Wiring Examples 70
- Digital Inputs 75
- Digital Input Conflict Alarms 83
- Output Time Delay 90
- Client/Server 92
- Peer-to-Peer operation 93
- Overall RMS Protection 95
- Drive Overload 96
- Thermal Manager Protection 97
- PWM Frequency 97
- DTO Fault 98
- Temperature Display 98
- Low Speed Operation 98
- Drive Ratings (kW, Amps 99
- Economizer 99
- (Auto-Economizer) 99
- Fan See Fan Curve above 100
- When a Fault Occurs 101
- Fault Queue 101
- Fault Time [Fault 1-8 Time] 102
- Resetting or Clearing a Fault 102
- Flux Braking 103
- Flux Up [Flux Up Mode] 104
- Flying Start 105
- Configuration 106
- Application Example 106
- Input Devices Contactors 108
- Input Power Conditioning 110
- Table 13 Linkable Parameters 112
- COMMUNICATION 113
- 00000100 114
- Adapter # X6543210 114
- Motor Control 115
- Trip Time (Seconds) 117
- Motor Overload 118
- 20 Minutes 119
- 1 Minute 1 Minute 119
- Motor Start/Stop 120
- Precautions 120
- Jm Jload 121
- Figure 26 Resonance 122
- Figure 27 10 Hz Notch 122
- Drive Output Contactor 123
- Cable Termination 123
- Output Frequency 124
- COMMUNICATIONS 126
- Table 14 PF70 Bus Levels 128
- Table 15 PF700 Bus Levels 129
- Power Loss 131
- Decel Input (PF700 only) 134
- Process PI Loop [PI Config] 135
- 10 Volts 136
- Process PI Loop 137
- Normalized Feedback 141
- Normalized SQRT(Feedback) 141
- PI Reference and Feedback 143
- PI Reference Scaling 143
- PI Setpoint 144
- PI Output 144
- PI Gains 144
- Positive and Negative Limits 145
- Output Scaling 145
- Vector v3 147
- Factory Default Bit Values 148
- Reflected Wave [Compensation] 149
- 50 10152025 149
- 30 35404550 149
- Reflected Wave 150
- Example Configuration #1 154
- Example Configuration #2 155
- Analog Out1 Value (Volts) 155
- Scale1 In Value = 155
- Encoder Speed (RPM) 155
- Example Configuration #3 156
- PI Reference 156
- Analog In2 Value (Volts) 156
- DYNAMIC CONTROL 157
- Figure 31 Skip Frequency 158
- . This function affects 159
- Sleep Mode Operation 160
- Interactive functions 161
- Sleep/Wake Levels 161
- Sleep/Wake Sources 161
- Wake Level 162
- Sleep Level 162
- Analog Signal 162
- Speed Reference Operation 167
- Frequency Reference 169
- Figure 36 Trim 170
- Speed Regulator 171
- Figure 37 172
- Speed Regulation Mode 173
- Torque Regulation Mode 173
- Figure 38 174
- Figure 39 175
- Permissive Conditions 176
- Start-Up Start-Up Routines 177
- Basic Start Up (Top Level) 178
- Start-Up 179
- Basic Start Up (Motor Tests) 181
- Basic Start Up (Speed Limits) 182
- Stop Modes [Stop Mode A, B] 197
- Stop Modes 198
- Test Points 200
- Torque Performance 201
- Sensorless Vector 202
- V/Hz Control 202
- Flux Vector Control 203
- Figure 59 Flux Vector 204
- Figure 60 204
- Unbalanced or 205
- Ungrounded Distribution 205
- Figure 61 User Sets 206
- Voltage Class 207
- Watts Loss 208
- Rockwell Automation Support 214
- Documentation Feedback 214
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