SP 8-941 (Machine Status) keeps a record of the amount of time that the machine spends in each mode.

  • SP8-941-001: Operating mode
  • SP 8-941-002: Standby mode
  • SP 8-941-003: Panel off mode (Not used in this model)
  • SP 8-941-004: Low power mode (Not used in this model)
  • SP 8-941-005: Sleep mode

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 SP8-941 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)

Here is an example calculation.

Machine Condition

SP8-941: Machine Status

Time at Start (min.)

Time at End (min.)

Running time (hour)

(-)/60=

Power consumption Spec. (W)

Power consumption (KWH)

(×)/1000=

Operating

001: Operating Time

21089.0

21386.0

4.95

898

4.45

Standby

(Ready)

002: Standby Time

306163.0

308046.0

31.38

179

5.62

Energy save

(Panel off)

003: Energy Save Time

74000

75111.0

18.52

148.09

2.74

Low power

004: Low Power Time

148000

150333

38.88

111

4.32

Sleep

005: Off Mode Time

508776.0

520377.0

193.35

1.8

0.35

Total

17.47