Danfoss iC2 - 5.4.4 Speed Control Configuration with I;O Using Default

Application Guide | iC2-Micro Frequency Converters
2. To test motor operation, start the motor at low speed (100–200 RPM). If the motor does not turn, check installation, general
parameter configurations, and motor data.
3. Perform parking operation by setting P 5.6.14 Sync. Motor Parking Current % and P 5.6.13 Sync. Motor Parking Time. The
factory setting values of the parameters can be adjusted and increased for applications with high inertia. Start the motor at
nominal speed. If the application does not run well, check the VVC+ PM settings. The following table shows recommendations
in different applications.
Table 13: Recommendations in Different Applications
Application Settings
Low inertia applications ILoad/IMotor<5 • Increase the value for P 4.4.4.10 Voltage filter time const.
by factor 5–10.
• Reduce the value for P 4.4.4.7 Damping Gain.
• Reduce the value (<100%) for P 4.4.4.14 Min. Current at
Low Speed.
Medium inertia applications 50>ILoad/IMotor>5 Keep calculated values.
High inertia applications ILoad/IMotor>50 Increase the values for P 4.4.4.7 Damping Gain, P 4.4.4.9 Low
Speed Filter Time Const., and P 4.4.4.8 High Speed Filter Time
Const.
High load at low speed <30% (rated speed) Increase the value for P 4.4.4.10 Voltage filter time const.
Increase the value for P 4.4.4.14 Min. Current at Low Speed
(>100% for longer time can overheat the motor).
If the motor starts oscillating at a certain speed, increase P 4.4.4.7 Damping Gain. Increase the value in small steps. Starting
torque can be adjusted in P 4.4.4.14 Min. Current at Low Speed. 100% provides nominal torque as starting torque.
5.4.4 Speed Control Configuration with I/O Using Default
1. Go to parameter group 5 and specify the following:
Parameter index Parameter name Recommended settings Parameter number
5.4.3 Motor Control Principle Use default: [1] VVC+. In most situations,
selecting VVC+ provides optimum
performance without further adjustments.
101
5.4.2 Operation Mode Use default: [0] Speed Open Loop 100
9.4.1.2 T13 Digital Input Use default: [8] Start 510
9.4.1.3 T14 Digital Input Use default: [10] Reversing 511
9.4.1.4 T15 Digital Input Use default: [1] Reset 512
9.4.1.5 T17 Digital Input Use default: [14] Jog 513
5.5.3.7 Reference 1 Source [1] Analog Input 33 315
9.5.1.2 T31 Analog Output Use default: [100] Output Frequency 691
9.4.3.1 Function Relay Use default: [9] Fault 540
5.5.3.3 Reference Maximum Use default: 50 303
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