Peak Cut Troubleshooting - Mitsubishi Electric AE-200A Service Handbook

[V Troubleshooting]

[6] Peak cut troubleshooting

The following shows troubleshooting for the peak cut function.
* Before carrying out troubleshooting, check whether or not the peak cut settings have been configured.
1 Are the block settings configured?
2 Are the peak cut settings configured?
3 Is the license registered to each AE-200/AE-50/EW-50?
→ If "No" was answered for any of the above, the cause is likely to be that item. First remove that cause.
(1) Troubleshooting based on trouble examples
Symptom
The peak cut control status
does not match on the
actual equipment and the
1 AE-200/AE-50/EW-50 (Web
browser) or TG-2000A
screen.
(Display timing offset)
It is hot as cooling has no
effect due to peak cut.
2
Peak cut control is not being
performed normally.
3
Item
Cause
There is a difference in the monitor
timing.
1) Control is always at the highest
level because the set peak cut
power value is low.
1) The license is not registered to
the AE-200/AE-50/EW-50.
2) The power of the
AE-200/AE-50/EW-50, PI
controller, PLC is shut down.
3) The M-NET transmission line
or a LAN cable is broken or
disconnected.
4) The operation block is not set.
5) The control settings of peak cut
control are not set or the
settings are incorrect.
6) There is a pulse setting
mistake (in the case of a PI
controller). The pulse unit is set
on the PI controller even
though it is connected with the
AE-200/AE-50/EW-50 or
TG-2000A.
Check procedure and remedy
- (Normal)
→ An offset occurs due to the monitor timing.
Check how low the peak cut level is set (*1) and if it is low, do the
following.
Cause 1) Consider whether the peak cut level can be changed.
*1 The level can be checked in the [Energy Mgmt] - [Peakcut]
screen on the AE-200 LCD.
Check causes 1) to 7). Take the measure corresponding to the
cause.
Cause 1) Register the energy management license pack to the
AE-200/AE-50/EW-50.
Cause 2) Check the power supply system.
Cause 3) Check the connections of the M-NET transmission line
and LAN cables.
Cause 4) Set the operation block and configure the peak cut
control settings.
Cause 5) Check and fix the settings.
Cause 6) Check that the [kWh/pulse] setting on the electricity
meter and PI controller is correct. When the PI controller
is connected with the AE-200/AE-50/EW-50 or
TG-2000A, dip switch SW02 of the PI controller needs
to be set to the SC setting (factory default setting). If
there is setting mistake, fix it.
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Yes No