Integrated Power Amount Pulse Output; Pulse Output Unit - Omron KM1 User Manual

0BChapter 3 Functions

Integrated power amount pulse output

Integrated power amount pulse output

PMU1A PMU1A PMU2A PMU2A
(Electric (Electric (Power (Power
power) power) two-system) two-system)
○ ○
Each time the integrated power amount reaches a set pulse output unit, pulse is output from the
terminal set by the output pulse setting.
As the power amount increases, the integrated power amount increases, and pulse output cycles
(intervals) become shorter. As the power amount decreases, the integrated power amount
decreases, and pulse output cycles become longer.
Output pulse cycles can be obtained by the following calculation formula.
Pulse output cycle [s] = 3600 [s]/(Power [W]/Pulse output unit [Wh])
The calculation method of pulse output cycles is described taking an example.
Example:
When input power is 200 k[W] and pulse output unit is 10 k[Wh] in 3-phase 3-wire, output pulse
cycle = 3600 [s]/(200 k [W]/10 k[Wh]) = 180 [s] is obtained. If the status with input voltage of 10
k[W] is continued for an hour, passage of an hour (3600 s) gives 10 k[Wh]. If an input of 200 k[W]
sets the pulse output unit to 10 k[Wh], 200 k[W]/10 k[Wh] = 20 pulses are output for an hour, and
the cycle is as follows: 3600 [s]/20 pulses = 180 [s]. For the output pulse, one pulse is output (ON)
every 180 [s].
Power supply
電源
Output pulse
出力パルス
When the cycle is shorter than the pulse width, or when the next output is turned ON
immediately after the output is turned OFF, OFF time of 100 ms is given.
If OFF time is short, count error may occur due to scan time such as PLC. Set an appropriate

pulse output unit.

Pulse output unit
PMU1A PMU2A
(Electric (Power
power) two-system)
Available when a pulse output is assigned to the output setting.
Any pulse output unit can be set.
Setting range: 1 Wh, 10 Wh, 100 Wh, 1 kWh, 2 kWh, 5 kWh, 10 kWh, 20 kWh, 50 kWh, 100 kWh
(Initial value: 100 Wh)
When the integrated power amount reaches the pulse output, power of the output unit is
subtracted from the integrated power amount to perform pulse output.
The pulse output width is fixed to 500 ms. For 100 ms after the pulse output, next pulse output
is forcibly turned OFF.
Overlap of pulses forcibly turns OFF the output for 100 ms to inhibit turning ON continuously.
パルス出力タイミング
Pulse output timing
500ms
*1. indicates that the pulse output unit is reached.
*2. The target circuit is selected by setting a pulse output circuit.
Setting range : Circuit 1, Circuit 2, Circuit 3, Circuit 4 (Initial value: Circuit 1)
Single-phase
2-wire
Single-phase
3-wire
3-phase
3-wire
3-phase
4-wire
3-10
EMU8A EMU8A CTD8E CTD8E
(Pulse/temperature) (Pulse/temperature) (CT (CT
expansion) expansion)
× ×
1 2
180s 180s
1h
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
× ×
500ms
100ms 100ms
PMU1A (Electric power)
Circuit 1 Circuit 2 Circuit 3
CT input 1 CT input 2 CT input 3
CT input 1,
3
CT input 1,
3
CT input 1,
2, 3
O: With function X: Without function
0.5s
ON
3 20
OFF
O: With setting X: Without setting
500ms 500ms
100ms 500ms
PMU2A (Power two-system)
Circuit 1 Circuit 2
CT input 1 CT input 2
CT input 1,
2
CT input 1,
2
100ms
Circuit 3 Circuit 4
CT input 3 CT input 4
CT input 3,
4
CT input 3,
4