SP 8941 (Machine Status) keeps a record of the amount of time that the machine spends in each mode.
SP8-941-001 | Operation Time | Cumulative time of the state in which the engine state notification is enabled. The state in which the engine is not running (such as when storing to HD only with the controller) is excluded from the running state. |
SP8-941-002 | Standby Time | Cumulative time of the state in which the engine state is not running. |
SP8-941-003 | Low Power Time | Not used for this machine |
SP8-941-004 | Sleep mode time | Cumulative time in Sleep Mode state. |
SP8-941-005 | Off Mode Time | Cumulative time in which the Energy Saving state of the device is Engine OFF state. |
SP8-941-006 to 009 | Down time | Cumulative time in which the device is disabled because itself or its component is in the following state.
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With this data, and the power consumption values from the specifications, we can estimate the amount of energy that is used by the machine.
This should only be used as a reference value, because the power consumption specifications are measured in a controlled environment with a constant power supply.
To get an exact measurement at the customer’s site, a watt meter must be used to measure the actual energy consumed.
To use SP8941 to calculate the energy consumed:
- At the start of the measurement period, read the values of SP8-941-001 to 005.
- At the end of the measurement period, read the values of SP8-941-001 to 005 again.
- Find the amount of time spent in each mode (subtract the earlier measurement from the later measurement).
- Multiply this by the power consumption spec for each mode.
- Convert the result to kWh (kilowatt hours)