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6-3
Group
Control mode
Comments
Function
Group
Flux
Vector
Open-loop
Vector
V/f
w/PG
V/f
Comments
Function
Terminal
H1
Digital Inputs
Function selection for multi-function inputs
OK
OK
OK
OK
e
a
H2
Digital Outputs
Function selection for multi-function outputs
OK
OK
OK
OK
H3
Analog Inputs
Adjustment/function selection for external analog inputs
OK
OK
OK
OK
H4
Analog Outputs
Adjustment/function selection for multi-function analog
outputs
OK
OK
OK
OK
H5
Serial Com Setup
Not Used. (Do not change this setting.)
---
---
---
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Protection
L1
Motor Overload
Sets electrical/thermal functions that protect the motor.
OK
OK
OK
OK
o ec o
L2
PwrLoss Ridethru
Selects the power-loss processing method.
OK
OK
OK
OK
L3
Stall Prevention
Accel/Decel stall prevention settings and selection
OK
OK
OK
OK
L4
Ref Detection
Frequency detection settings and selection
OK
OK
OK
OK
L5
Fault Restart
Fault restart function settings
OK
OK
OK
OK
L6
Torque Detection
Sets overtorque detection functions 1 and 2 (by torque)
OK
OK
OK
OK
L7
Torque Limit
S
Torque limit settings
---
---
OK
OK
L8
Hdwe Protection
Hardware overheating and phase loss protection settings
OK
OK
OK
OK
Operator
o1
Monitor Select
Selects the Operator’s display and setting methods.
OK
OK
OK
OK
O e a o
o2
Key Selections
Operator’s key function selection and other parameters
OK
OK
OK
OK
6-1-2 Torque Limit Function
With open-loop vector control, the torque limit can be applied at an arbitrary value be-
cause the torque output by the motor is calculated internally.
The torque limit function is useful when the load cannot sustain a torque above a certain
level or regenerative torque above a certain level. The two ways to apply a torque limit
are listed below. (The lower torque limit will be used if both of these methods are set.)
1) Setting a torque limit with the parameters
2) Limiting torque with the analog inputs
The precision of the torque limit is
±
5% for output frequencies above 10 Hz, but the preci-
sion is lower for output frequencies below 10 Hz. Use flux vector control if you want to
apply a torque limit at low-speed (below 10 Hz).
H
Setting a Torque Limit with Parameters
Torque limits can be set separately for the 4 ways that torque can be applied: forward torque, reverse
torque, forward regenerative torque, and reverse forward regenerative torque. These parameters can-
not be changed during operation.
Parameter
Display name
Setting
Units
Default
Valid access levels
number
p y
g
range
setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
L7-01
Torque Limit Fwd
0 to 300
%
200
Not applicable
Basic or Advanced
L7-02
Torque Limit Rev
L7-03
Torque Limit Fwd Rgn
L7-04
Torque Limit Rev Rgn
Advanced Operation
Chapter 6
Summary of Contents for SYSDRIVE 3G3FV
Page 1: ...USER S MANUAL High function General purpose Inverter SYSDRIVE 3G3FV Cat No I516 E1 4 ...
Page 16: ...Chapter 1 Introduction 1 1 Function 1 2 Nomenclature 1 3 New Functions 1 ...
Page 33: ...Chapter 2 Installation 2 1 Mounting 2 2 Wiring 2 ...
Page 112: ...Chapter 4 Trial Operation 4 1 Procedure 4 2 Operation Example 4 ...
Page 289: ...Chapter 7 Parameter Lists 7 1 Initialize Mode Parameters 7 2 Program Mode Parameter List 7 ...
Page 366: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9 ...
Page 395: ...Chapter 10 Appendix 10 1 Notes on Using the Inverter for a Motor 10 ...