SEW-EURODRIVE EKS energy storage unit

The diagnostic interface of SEW‑EURODRIVE’s own EKS energy storage units can be read directly from the respective device (MDP92A, MDE90A) so that no additional I/O modules are required.

Do the following to monitor and transmit the temperature:

  • The diagnostic interface is connected to the respective device according to the electrical wiring diagram (see "Power and Energy Solutions" product manual).
  1. In MOVISUITE®, open the configuration menu "Energy storage" > "Local storage interface" in the configuration of the software module.
  2. Activate the monitoring of the external fault signals.
  3. Select the sensor type (e.g. EKS A) in the "Analog temperature sensor input" area.
    • The temperature sensor can be connected directly to the MDP92A/MDE90A.
  4. Set the minimum temperature, the maximum temperature and a hysteresis in the "Temperature monitoring" section.
  • The diagnostic interface is automatically linked to the additional function, StorageMonitor. Additional programming is not required and the diagnostics data is available to the user on the MOVI-C® CONTROLLER.
  1. Update the configuration data of the MOVI-C® CONTROLLER
  • The changed parameters can be read out from the device and imported into the software module.
  • Storage modules that are read in via the device interface are automatically assigned the stack ID 254.
  • The storage unit can be read out via the following user interface:

Explanation of the example:

The energy storage unit reports a general energy storage fault (undertemperature in the case of SEW EKS) via xStorageError.

The SEW‑EURODRIVE EKS storage unit transmits a temperature value that represents the maximum of all temperatures measured in the connected energy modules. There is also wire break monitoring and a fault bit that indicates overvoltage.

The control system evaluates the temperature and additionally issues fault and warning messages as soon as the temperature has risen above a maximum threshold or fallen below a minimum threshold. A hysteresis value is available for monitoring the maximum temperature, so that a prewarning is triggered if the maximum temperature minus the hysteresis value is exceeded.