Miro PCM-P Points Condition Monitor User Manual
- June 13, 2024
- miro
Table of Contents
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Technical Note: Miro Points Condition Monitor (PCM) Button Interface
This guide introduces the Miro PCM button interface and the different
functionalities they offer.
Introduction
The Miro Points Condition Monitor (PCM) has a button user interface to allow the instrument to be put into training and maintenance modes on-site, without needing to connect locally or remotely with a PC. Both the Pneumatic (Miro PCM-P) and Electric (Miro PCM-E) variants use this same interface.
Buttons
Two buttons are available, ‘F1’ and ‘F2’ as seen in Figure 1. ‘F1’ is used for
‘forward’ or ‘OK’, while ‘F2’ is used for ‘back’, ‘next option’ or
‘cancel’.
LCD Pages
The function of the buttons varies depending on which LCD page is currently
being displayed. For a point monitoring application, disabling every LCD page
except Points in the Configurations tab via Citrus can simplify the use of the
buttons (Figure 2). 
If not currently displayed, the user can quickly switch to the Points pages
(or any other enabled pages) using the buttons as described in the next
section.
If the Points pages need to be hidden, deselect Points in the configuration.
This will prevent the LCD auto scrolling to the Points pages, though the
Points sub-pages can still be accessed manually via the buttons as described
in the ‘Points Menu’ section of this note.
Other Pages
When the LCD is displaying a page that is not part of the Points pages, the
buttons work as follows:
Pressing the ‘F1’ button switches to the next page.
Pressing the ‘F2’ button switches to the previous page. If Points was selected
in the LCD configuration page and if any of the Points pages is currently
being shown on the LCD, pressing ‘F1’ or ‘F2’ will make the LCD only scroll
through the 3 different Points pages. To leave the Points pages, wait for the
LCD to auto-cycle back to the non-Point pages.
Pressing both ‘F1’ and ‘F2’ buttons simultaneously will always open the Points
Menu.
Points Pages
The ‘F1’ and ‘F2’ buttons can be used to step through the 3 different
Points pages:
-
Status.
Voltage/current (for Miro PCM-E) or pressure/flow (for Miro PCM-P) for all channels -
Last A-Side operation (Normal or Reverse)
-
Last B-Side operation (Normal or Reverse).
Applies only to the Miro PCM-E.
The 3 different pages can be seen below in Figures 3 to 6.
Points Menu
Figure 7 shows the Points Menu page. ‘F2’ is used to scroll through the
menu items via the cursor. ‘F1’ activates a menu item. The user will be asked
to confirm the item by pressing ‘F1’ again or cancel by pressing ‘F2’. The
Points menu can always be accessed by pressing both ‘F1’ and ‘F2’
simultaneously. Exiting the Points menu will take you to the Points pages
regardless of whether Points has been selected in the LCD configuration or
not. To leave the Points pages, wait for the LCD to auto-scroll back to the
non-Point pages as previously mentioned.
Maintenance Mode
This will start 2 hours of maintenance mode. To set the Miro PCM into
maintenance mode, go to the Points menu and move the cursor to ‘Maintenance
Mode’ using the ‘F2’ button and select it using the ‘F1’ button. Upon
selection, the device will ask to confirm selection as seen in Figure 8. Press
‘F1’ to confirm selection or ‘F2’ to cancel.
Upon confirmation, the instrument will
be put into maintenance mode and the word ‘MAINTAINENCE MODE:’ along with a
counter starting from 7200 (seconds) will appear on the LCD screen permanently
until the counter counts down from 7200s to 0s as shown below in Figure
9.
While
the instrument is in maintenance mode, all points operations will be listed as
‘Maintenance’ in the AsMoSys database, and no alarms or alerts will be
generated even when an operation is determined as ‘Possible Issue’ or
‘Critical’. Figure 10 shows the operations when in Maintenance mode. 
If
the Miro PCM instrument is powered down while in Maintenance mode and then
powered up again, the Miro PCM resets and will default to normal operations
mode. This can be seen on the LCD where the text,
MAINTAINENCE MODE:’ is not displayed. The Miro PCM will have to be set into
Maintenance mode again, as required.
Start Training
This will start the training process. During training mode, the instrument
will log 30 point operations and create reference traces. Upon approval of the
reference traces by authorised personnel, the reference traces will be used to
determine whether point operations are ‘Good’, ‘Possible Issue’ or ‘Critical’.
To set the Miro PCM to training mode, navigate to the Points menu, move the
cursor to ‘Start Training’ using the ‘F2’ button and select it using the ‘F1’
button. Upon selection, the device will ask to confirm selection as seen in
Figure 11. Press ‘F1’ to confirm selection or ‘F2’ to cancel. Upon
confirmation, the instrument will be put into training mode. There will be no
visual indicator to say that the Miro PCM instrument has been put into
training mode on the LCD, but on the AsMoSys database event log, there will be
events that state when training started and when training finished. Please
refer to Figure 12.
During training mode and before approval of
the training data, no point operation will be classified as either ‘Good’,
‘Possible Issue’ or ‘Critical’ on the AsMoSys database. Instead, operations
will be listed as ‘Training Not Complete’ during the training period or as
‘Awaiting Limit Approval’, when the training limits have yet to be approved.
Point events that occur during this time will also be listed as ‘Unapproved’.
Please see Figure 13.
CHK Power Quality Pty Ltd, Technical Note: Miro PCM Button Interface, 1 June
2022, rev 1.00
Address: Unit 1, 3 Tollis Place, Seven Hills, NSW 2147, Sydney, Australia
Telephone: +61 2 8283 6945;
Fax: +61 2 8212 8105
Website: www.chkpowerquality.com.au;
Enquiries: sales@chkpowerquality.com.au
References
- Power Quality Experts & Asset Condition Monitoring | CHK Power Quality
- Power Quality Experts & Asset Condition Monitoring | CHK Power Quality