Nokeval PM20A User manual

Document ID 7821 V1 20.4.2016
Firmware versions 1.0-1.0
PM20A chassis
Manual

Page 2 - Table of contents
Table of contents
Table of contents ............................................................................................................................................................ 2
Introduction .................................................................................................................................................................... 3
Assembling a new PM20A ............................................................................................................................................... 4
Mounting in a panel ........................................................................................................................................................ 6
Configuration menu overview ........................................................................................................................................ 7
Using the display............................................................................................................................................................. 8
Display contents and pages................................................................................................................................................................................... 8
Automatically configuring the display contents ................................................................................................................................................... 9
Manually configuring the display contents ......................................................................................................................................................... 11
Making the display to scan the pages.................................................................................................................................................................. 13
Configuring the colors globally............................................................................................................................................................................ 14
Configuring the colors individually...................................................................................................................................................................... 14
Making a color to change at an event.................................................................................................................................................................. 14
Using a dimmer.................................................................................................................................................................................................... 15
Configuring the page indicators .......................................................................................................................................................................... 16
Configuring and using the fault indicator............................................................................................................................................................ 16
Using the indicators for other purposes.............................................................................................................................................................. 16
Selecting the color for the indicators .................................................................................................................................................................. 16
Attention light ...................................................................................................................................................................................................... 17
Protecting the configuration with a password.................................................................................................................................................... 17
Allowing the user to interact: The setpoints........................................................................................................................................................ 18
Having auxiliary pages......................................................................................................................................................................................... 20
Ambient light sensor............................................................................................................................................................................................ 21
Temperature sensor............................................................................................................................................................................................. 21
AnyFault register.................................................................................................................................................................................................. 21
Configuring the device using the front panel............................................................................................................... 22
Beginning a configuration session....................................................................................................................................................................... 22
Navigating in the menu........................................................................................................................................................................................ 22
Editing a value...................................................................................................................................................................................................... 23
Editing a reference............................................................................................................................................................................................... 25
Ending the configuration session ........................................................................................................................................................................ 25
Using the USB port........................................................................................................................................................ 26
Functions, tables, Elo…................................................................................................................................................ 27
Maintenance.................................................................................................................................................................. 28
Troubleshooting............................................................................................................................................................ 28
Problems.............................................................................................................................................................................................................. 28
Seeing information about the cards.................................................................................................................................................................... 28
Viewing fault messages........................................................................................................................................................................................ 29
Viewing the registers............................................................................................................................................................................................ 29
Specifications................................................................................................................................................................ 30
Environmental...................................................................................................................................................................................................... 30
Dimensions and weight........................................................................................................................................................................................ 30
Warnings........................................................................................................................................................................ 31
Manufacturer................................................................................................................................................................. 31

Page 3 - Introduction
Introduction
PM10 is a modular panel-installed meter and controller family for industrial use. PM20A is one type of
chassis in this family. It is a 96x96 mm panel meter chassis consisting of an enclosure, motherboards,
and a display. Various types of input and output cards can be fitted inside.
This manual covers the PM20A chassis. Please supplement this manual with the PM10 system manual
and a manual for each card type used.
PM20A uses the FreeRTOS real-time operating system V8.0.1. The FreeRTOS source code is available
from Nokeval support on request.

Page 4 - Assembling a new PM20A
Assembling a new PM20A
This chapter may be skipped if the device is ordered pre-built.
The PM20A internals consist of two motherboards, support structures, the display board and the
optional cards:
Slot A Slot E
Display board
PM20ADISP
Lower
motherboard
PM10BAS Micro USB
connector
Detachable
connectors
Upper
motherboard
PM20EXT
Support plates Slot F Slot J
To access the internals, pull off all the detachable connector blocks. Then do one of following:
Push the front bezel off. Place your fingers on
the left or the right side of the bezel and push. It
may be quite tight. Then slide the internals out.
This is possible only when the device is not
installed in a panel.
Unscrew the four small Phillips screws in the
back plate. Pull the internals out.

Page 5 - Assembling a new PM20A
If you need to add/remove/set up cards
in the upper floor, remove the two
screws holding the upper support plate
and then the plate itself.
If you need to add/remove/set up cards
in the lower floor, remove the two
screws at the bottom of the lower
motherboard. Then carefully lift the
upper motherboard until it disengages
and then slide it off the display board.
At reassembly, do the opposite,
carefully guiding the pin connector to its
counterpart.
Use ESD precautions –at least touch an earthed object before touching the cards. Avoid touching the
components on the cards, although it may be impossible.
Set the jumpers of the cards as described in the manuals of each card.
Insert the desired cards. The cards can be of any type and placed freely, except:
Use only one power supply card. Place it always in slot E –the back plate has a different
opening.
Do not place a relay card in slot A to keep hazardous voltages away from the USB connector.
When purchasing separate cards, they are accompanied with connector diagram labels. Attach the
labels on the top of the enclosure for the upper floor cards and on the bottom of the enclosure for the
lower floor cards.
Snap the appropriate back plate opening covers off by fingers or by a flat-bladed screwdriver.
Slide the motherboard and the cards in the enclosure guiding the cards in the grooves and refit the
front panel or the back plate.

Page 6 - Mounting in a panel
Mounting in a panel
Prepare a panel cut-out per IEC 61554: width and height 92.0…92.8 mm.
Place the gasket around the PM20A body.
Slide the device in the opening and fasten with two clamps, either on the sides or on top and
bottom.
The backside of the device may have hazardous voltages in the terminals. If this is the case,
the backside must not be accessible without tools. Also tie the wires so that if a wire comes
loose, it can’t contact the other connectors.

Page 7 - Configuration menu overview
Configuration menu overview
The configuration menu items of the display are explained in the relevant chapters. This is just a quick
overview. The other cards have menus of their own, not covered by this manual.
Display
Trunk
Defining the contents of the display.
Page 8.
Auto fill
Page1
Page2
Scan
Controlling how several pages alternate
on the display.
Page 13.
Colors
Selecting colors for the display.
Page 14.
Dimmer
Controlling the display brightness
externally.
Page 15.
Setpoints
Allowing the operator to adjust some
values easily, e.g. alarm levels.
Page 18.
Indicators
Defining the operation of the small
indicator lamps above the display.
Page 16.
Attention
Using the bright red attention light.
Page 17.
Tables
Linearization tables.
PM10 system manual.
Totalizers
Totalizers for accumulating flow.
PM10 system manual.
Funcs
Multi-purpose functions.
PM10 system manual.
Program
Elo program for advanced functionality.
PM10 system manual.
General
Password for the display.
Page 17.
Agents
Controlling the settings dynamically.
PM10 system manual.

Page 8 - Using the display
Using the display
Indicators
Can be used to indicate alarms, digital
input states, and which page is
currently displayed.
Fault indicator
Indicates that there is
something wrong.
Ambient light sensor
Convenient input for
testing purposes. Can be
used to dim the display.
Tag
Gives a hint what the
accompanying reading
is. Can be 1-3 letters or
digits. Reading
A variable value, e.g.
input or function value.
Keys
For configuring the
device, and for
controlling its functions.
Attention light
Bright red light for
getting attention
when something
happens.
Display contents and pages
The display has three equivalent rows, each consisting of six 11-segment digits. The contents of the
rows are configurable. In practice, every row can contain one of the following options:
A tag
A reading
A tag and a reading
Two readings
Nothing
A tag, meaning some fixed text or numbers, can be used to clarify the contents of the display. Each row
can have a tag of its own. The top row is sometimes used as a title without a reading.
As this device may have more inputs (and other values) than fits on the display, it is possible to define
several pages, each having different tags and readings. The user may switch different pages to the
display using the vand ^keys, or the device can be configured to scan the pages automatically.
In a newly built device, the display may be blank, as nothing has been configured. The display reading
may come from various sources not limited to the inputs. The display contents may be configured
manually or automatically.

Page 9 - Using the display
Automatically configuring the display contents
In most cases, the task of defining the display (page) contents may be left to PM20A. It will
automatically query the input cards and place their readings on the display, beginning from slot A
inputs. Since the inputs that are switched off are not included, configure the inputs first according to
the input card manuals.
Warning! This will override any manual configurations done in the Page menus.
To start the Auto fill, do one of the following:
Connect to the display (Master) with Mekuwin. Navigate to Display >Auto fill and click Execute.
Switch the device off, hold the <and >keys pressed, and switch the power on. “Autofill” is
displayed for a moment.
Use the Quick configuration menu on the front panel:
Slot A
Slot D
Slot E
Slot C
Master means the
display
Master Autofill
Cancel
Procee
v
TagColor
ValueColor
Brightness
Dec1
Dec2
**
^
v
*1 sec Conf
Regs
Faults
Info
>
QConf
Save
>
<
<
Use v^ to move
within a menu.
Use <to exit.
The display is now ready for use! Push the vand ^keys to move among the pages.
The Auto fill may be re-run at any time. Its operation may be tuned with the following settings under
the Display > Auto fill configuration menu:
Layout
How the display is filled with tags and values. See options below.
Tag
How the tag is formed:
Retain: Preserve the previous tag.
None: Remove the tags.
Index: Sequential numbers 1, 2, 3… This is the factory default.
Letter: A letter A, B, C…
SlotReg: A combination of the card slot (A, B…E) and the number of the register on
the card, e.g. A1, A2, B1, B2.
Dec
The number of decimals to show. Each reading will get the same number of decimals, but
they may later be adjusted individually under each page settings.
Auto fill provides several layout options:
Layout setting
Description
Example
Title+Val
The top row has a tag. The middle row has a reading. The bottom
row is blank. This is a “compatibility mode” with Nokeval 538-8
panel meter.
Title+2Val
The middle and bottom rows have a reading. The top row has a tag
consisting of two channel numbers separated by a dash. Each
reading has six digits to use.
3Val
Each row has a tag and a reading. The readings can be up to five
digits long on channels 1-9 and four digits after that.

Page 10 - Using the display
Title+4Val
The middle and bottom rows have two readings each. Top row has
a tag consisting of the first and last channel numbers separated by a
dash. Each reading should have up to three digits.
6Val
Every row has two readings, maximally utilizing the display. If
several pages are used, the indicators above the display can be used
to indicate which page is being displayed as there is no room for
tags.