Optidrive E3 Advanced Technical Manual Issue 05.Docx
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2
. Opt
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E3
Par
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Set Ov
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Par.
Description
Minimum
Maximum
Default
Units
P-11
Low Frequency Torque Boost Current
0.0
Drive
Dependent
3.0
%
Low Frequency Torque Boost is used to increase the applied motor voltage and hence current at low output frequencies. This can
improve low speed and starting torque. Increasing the boost level will increase motor current at low speed, which may result in the
motor temperature rising - force ventilation of the motor may then be required. In general, the lower the motor power, the higher
the boost setting that may be safely used.
For IM motors, when P-51 = 0 1 or 1, a suitable setting can usually be found by operating the motor under very low or no load
conditions at approximately 5Hz, and adjusting P-11 until the motor current is approximately the magnetising current (if known) or
in the range shown below.
Frame Size 1 : 60 – 80% of motor rated current
Frame Size 2 : 50 – 60% of motor rated current
Frame Size 3 : 40 – 50% of motor rated current
Frame Size 4 : 35 – 45% of motor rated current
This parameter is also effective when using alternative motor types, P-51 = 2, 3 or 4. In this case, the boost current level is defined as
4*P-11*P-08
P-12
Primary Command Source
0
6
0
-
Setting
Function
Description
0
Terminal Control
The drive responds directly to signals applied to the control terminals.
1
Uni-directional Keypad
Control
The drive can be controlled in the forward direction only using an external or remote
Keypad
2
Bi-directional Keypad
Control
The drive can be controlled in the forward and reverse directions using an external or
remote Keypad. Pressing the keypad START button toggles between forward and reverse.
3
Modbus Network Control
Control via Modbus RTU (RS485) using the internal Accel / Decel ramps
4
Modbus Network Control
Control via Modbus RTU (RS485) interface with Accel / Decel ramps updated via Modbus
5
PI Control
User PI control with external feedback signal
6
PI Analog Summation
Control
PI control with external feedback signal and summation with analog input 1
7
CAN open Control
Control via CAN (RS485) using the internal Accel / Decel ramps
8
CAN open Control
Control via CAN (RS485) interface with Accel / Decel ramps updated via CAN
9
Slave Mode
Control via a connected Invertek drive in Master Mode. Slave drive address must be > 1.
NOTE
When P-12 = 1, 2, 3, 4, 7, 8 or 9, an enable signal must still be provided at the control terminals, digital input 1
P-13 Operating Mode Select
0
2
0
-
Provides a quick set up to configure key parameters according to the intended application of the drive. Parameters are preset
according to the table.
0: Industrial Mode
. Intended for general purpose applications.
1: Pump Mode
. Intended for centrifugal pump applications.
2: Fan Mode
. Intended for Fan applications.
Setting Application
Current Limit (P-54) Torque Characteristic
Spin Start (P-33)
Thermal Overload Limit Reaction
(P-60 Index 2)
0
General
150%
Constant
0 : Off
0 : Trip
1
Pump
110%
Variable
0 : Off
1 : Current Limit Reduction
2
Fan
110%
Variable
2 : On
1 : Current Limit Reduction
P-14
Extended Menu Access code
0
65535
0
-
Enables access to Extended and Advanced Parameter Groups. This parameter must be set to the value programmed in P-37 (default:
101) to view and adjust Extended Parameters and value of P-37 + 100 to view and adjust Advanced Parameters. The code may be
changed by the user in P-37 if desired.
