Protection Of External Filters Or Brake Resistors; Automatic Derating; Monitoring, Logging And History Log; Monitoring Features In Motion - Danfoss iC7 Motion Series Application Manual

Application Guide | iC7 Series Motion

Protection of External Filters or Brake Resistors

2.6.4
Brake resistors are monitored for thermal overload (by calculated thermal load or an external sensor), short circuit, and missing
connections.
The drive can also monitor the temperature of externally connected filters.

Automatic Derating

2.6.5
Automatic derating of the drive allows continued operation even if the nominal operation conditions are exceeded. Typical factors
affecting operation are temperature, high DC-link voltage, high motor load, or operation close to 0 Hz. Derating is typically applied as a
reduction in switching frequency or change in switching pattern, resulting in lower thermal losses.

Monitoring, Logging and History Log

2.7

Monitoring Features in Motion

2.7.1
The drive offers a wide range of monitoring features that provide information of actual operating conditions. Some examples are:
Speed monitoring
The motor speed can be monitored during operation. If the speed exceeds minimum or maximum limits, the user is notified and can
initiate appropriate actions.
Temperature monitoring
Temperatures of the drive and external connected sensors can be monitored. This way you can monitor the operational conditions of the
drive and the related application.
Grid monitoring
During operation, the drive is able to monitor the grid conditions. It measures the grid voltage for each supply phase and the grid
frequency, and calculates the grid voltage imbalance and total harmonic distortion (THDv).
Position monitoring
During operation, the drive is able to monitor hardware end limit switches, as well as minimum and maximum positions. The reaction
upon reaching the limits can be configured.

Event Log

2.7.2
An event log provides access to the latest registered warnings and faults, providing relevant information for analysis of the events that
occur in the drive.

Logging and Storage of Data

2.7.3
Logging of operational data from the drive and the related process is possible during running. Logging can be continuous or triggered
by specific events. Data is stored to the microSD card placed in the drive, or transferred directly to MyDrive Insight. This feature provides
the opportunity to collect data for a detailed analysis of operation and the events happening during operation.

Functional Safety

2.8
A Safe Torque Off function with dual input is available as standard in the drive. An additional Safe Torque Off feedback signal indicates
the status of the drive.
More functional safety features are available as optional selections. The set of features covers a wide range of functional safety functions
that can operate in both sensorless and closed-loop setup. A safe fieldbus is also supported as option.
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