s Desigo PX PXM20 / PXM20-E operator unit User's guide Version 6.
Contents Revision history ............................................................................. 4 Reference to trade names and product names ............................ 4 Third-Party Software Information.................................................. 5 1 1.1 1.2 1.3 1.3.1 1.3.2 1.3.3 About this manual ...................................................... 6 Target readers ............................................................. 6 Contents ...................................................
4.3 Logout ........................................................................ 31 5 Navigation ................................................................ 32 6 6.1 6.2 6.3 Reading and editing values ..................................... 33 Example: Setting a setpoint ........................................ 34 Example: Editing the heating curve ............................ 35 Forced control ............................................................ 36 7 7.1 7.2 7.2.1 7.2.2 7.2.3 7.
Revision history Version Date Doc. No. Change V6.1 04.2017 CM110754en_06 Third-Party Software Information V5.1 08.2014 CM110754en_05 Change int. password Wiring Test Section 5 4 11.1 V5.1 12.2013 CM110754en_04 Note concerning local / global communication 3.2.17 V5.1 05.2013 CM110754en_03 Functionality 5.1 All 12.2009 CM110754en_02 Validity "2.2 and later 07.2006 CM110754en_01 "Revision history", and "Reference to trade names and product names" added. V2.36 V2.35 12.
Third-Party Software Information This product, solution or service ("Product") contains third-party software components listed in this document. These components are Open Source Software licensed under a license approved by the Open Source Initiative (www.opensource.org) or similar licenses as determined by SIEMENS ("OSS") and/or commercial or freeware software components.
1 About this manual 1.1 Target readers This user guide is intended for those responsible for the HVAC plant in a building, and for other qualified staff, including service engineers. It is assumed that the users of the manual will have all the knowledge and skills needed to carry out the required tasks. 1.
1.3 Printing conventions 1.3.1 Text Bold text is used for text exactly as it appears in the display, e.g. START, ACKNOWLEDGE, Settings etc. 1.3.2 Keys Keys are shown as follows: • Key names that appear on the key itself are shown in angular brackets < > This convention is used for the < ? > key (Info), and the < – > and < + > keys. Example: Press the key. • The OK key and ESC key are referred to without brackets; their name is marked on the unit housing.
2 Display and control elements 2.1 Housing 1 2 00262 3 4 OK ? Figure 2-1 Housing 7 – ESC + 5 PXM20 6 Key: 1. 2. 3. 4. 5. 6. 7. Display panel (Section 2.2) Direct access keys (Section 2.1.3.1) Alarm LED (Section 2.1.1) Page Up & Page Down keys (Section 2.1.3.2) OK key, <+> and <–> editing keys (Section 2.1.3.3) ESC key (Section 2.1.3.4) key (Section 2.1.3.5) 2.1.1 Alarm LED When an alarm is tripped in the system, the alarm LED lights up or flashes, provided a user is logged in.
2.1.2 Audible signal If the Buzzer is set to On under Settings (see Section 3), then any alarm requiring acknowledgement and/or a reset will be additionally accompanied by an audible signal. Alarms which do not require acknowledgement or reset are not accompanied by an audible alarm signal. 2.1.3 2.1.3.
2.1.3.3 The OK key and the edit keys <+> and <–> As soon as you access a value with the direct access key, the value concerned begins to flash, indicating that it can be edited with the <+> and <–> keys. Confirm each change by pressing OK. In addition to the <+> and <–>keys you can use Page Up and Page Down to edit numerical values. The step-by-step procedure for editing is described in Section 6 2.1.3.4 ESC key By pressing the ESC key you can cancel any current process at any time (e.g.
2.1.3.5 Info mode The info key Pressing the key once takes you into "Info" mode. A question mark at the end of a line indicates that you can display information associated with this line. To do this, press the associated direct access key. Figure 2-2 Figure 2-3 Example: "Setpoint for cooling" Pressing the key again displays a dialog box with general information about the associated window.
2.2 Display All the elements of a plant are shown in the display, with values or information which you can read or overwrite, depending on your user access rights. Figure 2-4 shows the layout of the display. The next section describes the areas of the display and the symbols used. The keys used for navigation and editing are outside the display panel, and set into the housing itself. These keys are also described below in more detail.
2.2.2 Operator field Below the title bar is the operator field, which may contain either several lines of alphanumerical text, or a graph. Text lines A maximum of six lines of text can be displayed in the operator field. If there are more than this, the remaining lines appear on the next page. An ellipsis (…) indicates that the text is too long to fit on the line. To see the rest of the information, use the key followed by the direct access key.
Buttons The button-field contains other functions or dialog boxes to which you can gain access by pressing the associated direct access key. Buttons are identified by upper case text in a box. Pop-up A "pop-up" is a dialog box used to display an alarm or an event. The ALARM VIEWER button provides direct access to the list of active alarms.
2.2.3 Symbols The following is a list of all the symbols used in the display, and their meanings. The same symbol may represent different entries, or have a different meaning, depending on the context. Symbols Navigation Description Arrowhead. Values on this line can be accessed with the direct access key directly to the right of the line. This line contains additional information about the highlighted object. The information appears when you press the Info key . Refer also to Section 2.1.3.5.
Symbols Description Event Log Object Load Control Object User-defined system settings Alarming & functions Daylight savings Global objects.
Symbols Alarms & Events Description 1. Alarm overview 2. Alarm and event history: Alarm for "Off Normal" or fault state; flashing indicates unacknowledged alarm Acknowledged alarm state Alarm for "Normal" state; flashing indicates unacknowledged state.
3 Notes Settings 1. You can only carry out the settings described below if the appropriate rights have been assigned to you. These rights are allocated either in the engineering phase, or later by the system administrator. 2. To be able to carry out settings and modifications, you must be in a site (see Section 4). Figure 3-1 Site overview Open Alarming & functions for the current site.
3.1 System 3.1.1 Set time & date (system time) Note You can only make time settings if a primary server has been defined in the network. The system time is always applicable to one site. To change the system time, proceed as follows: 1. Open Alarming & functions > Set date & time for the current site. 2. Set the required time using the direct access key adjacent to the numerical time display. 3. Save the new settings. 3.1.
3.2 Note Device The procedure for defining or modifying settings in the PXM20 is always the same. It is therefore described here once only. The same procedure applies to Sections 3.2.1… 3.2.17. 1. Open Alarming & functions > Settings for the current site. 2. Select the required entry; the value will start flashing. 3. Configure the value as required. 4. Always save the new settings and restart the PXM20 operator unit.
3.2.1 Language Select the language here. The basic setting is English. 3.2.2 IP settings (PXM20-E only) These settings must be carried out only by (or by arrangement with) your system administrator or network administrator. Note Figure 3-3 Settings Figure 3-4 IP settings Set your network parameters here.
segment can register itself with BBMD as a foreign device. This function can be enabled here. The same dialog box is also used to enter the IP address of the device with BBMD functionality. Figure 3-6 Foreign device enabled 3.2.3 View restriction PXM20/PXM20-E units are delivered with the default setting View restriction = Off (Figure 3-7). This means that all sites and devices are visible. Use this menu to configure the site and devices that you need to see. 1.
Figure 3-9 One device visible 5. Save the new settings and restart the PXM20 operator unit. After a restart, only the devices set to Visible can be seen. Note! When you are logged in, only alarms from the visible devices are displayed. With View restriction = On, the red Alarm LED lights up in the event of an alarm even if you are not logged in. Disabling the view restriction Note! Set the view restriction to Off under Settings.
3.2.6 Display long texts Use this option to define whether or not a long text item should be displayed on two lines. 3.2.7 Buzzer Use this option to specify whether or not alarms are to be indicated with an audible signal. This is only possible if a user is logged in, and provided that the alarms are displayed in pop-up windows. Audible signals are only available for alarms which require acknowledgement or acknowledgement and rest. 3.2.
3.2.13 Main value This setting lets you specify that when operating the plant, the main value should appear at the end of the line for the object concerned. 3.2.14 Welcome window Here you can define whether a "Welcome" window is to appear when a user logs in. 3.2.15 Third-party site Use this option to specify whether or not third-party devices are to be operated with the PXM20.
3.2.16 Domain ID (PXM20 only) Set the Domain ID for the PXM20 here. Figure 3-10 Domain ID Important This setting should be modified only by fully trained staff. 3.2.17 Network scope Use this option to specify whether the BACnet communication is to be local or global, i.e. whether PXM20 should be able to communicate only with BACnet devices connected to the same network, or also with BACnet devices connected to another BACnet network. BACnet networks are divided by BACnet routers.
Important Notes This setting should be modified only by fully trained staff. • This setting is not visible to all users. • Local communication is only supported by the PXM20 and only with Siemens PXG… routers. With other models, and with PXM20-E, communication is always global.
4 Login and log-out First start New security feature starting from V5.1: When starting the device for the first time, you have to enter the default password for the user "Internal View". The device immediately requires changing this password. Forgot the password To reset the internal password, you have to re-load the firmware. Firmware Download Tool > select device (PXM20, PXM20-E).
If no sites are listed, this means that no automation station in the network has been defined as the primary server. 2. Select RESCAN NETWORK to look for all the devices on the network. In this case, access to the system is via an automation station defined as the back-up server. 3. Commissioning and service engineers can carry out a wiring test with the WIRING TEST option (see Section 11) 4.2 Login 1. Log in to the selected site with your user name and password. 2.
Note Note that wildcard characters (*) are used to represent the password in the password field. You can cancel password entry at any time by pressing ESC. 4. Press OK to confirm the password entered. Logging in to another site Before you can log in to a new site, you must first log out from the current site (see the next section). Note It is strongly recommended that user change the default password. Siemens is not liable for damages which can result from unauthorized access. Note Desigo V5.
4.3 Logout Note If you disconnect the PXM20 from the network without first logging out, this can temporarily impair the performance of the plant (e.g. by delaying the transfer of alarms). You should therefore always log off properly as described below. Logging out with ESC By repeatedly pressing ESC you can navigate to the top level. If you now press ESC again, a dialog box will be displayed in which you will be asked if you want to log off. Answer with Yes or No.
5 Navigation Tree structure The navigation structure for the PXM20 operator unit is displayed as a tree structure. Down one level The arrowhead symbol at the end of a line indicates that you can move to a dialog box at the next level down, by pressing the associated direct access key. Up one level Press ESC to leave the current dialog box and move to a dialog box at the next higher level. Closing windows Press ESC to close pop-up windows and dialog boxes.
6 Reading and editing values In order to edit values, you must have Write access rights. If you only have Read access, you can view a value, but not modify it. In the example below, the values which you can edit are indicated as follows: Figure 6-1 Display and direct access keys Key: Arrowhead The arrowhead symbol at the end of a line indicates that you have the necessary Write access rights to edit this value.
When editing always proceed as follows: 1. Press the direct access key adjacent to the required line. If you press the key briefly, the value will be displayed in inverse video ready for editing (see below). Sustained pressure on the direct access key allows you to navigate to the next level down (if there is one). Edit the required value with the <+>-, <–> keys. Numerical values can also be edited using the Page Up and Page Down keys. 2. Acknowledge the changes you have made by pressing OK. 3.
6.2 Example: Editing the heating curve The heating curve is used to determine the flow temperature setpoint for weather-compensated flow temperature control. Two display formats There are two ways of setting the heating curve values using the PXM20 operator unit. Either the main parameters can be displayed in graph form, or all the parameters, inputs and outputs can be displayed in list form. .
Figure 6-5 Heating curve: list view, page 2 Select GRAPHIC VIEW to return to the graph. 6.3 Forced control "Forced control" applies to the process of setting inputs and outputs manually to a given value. The inputs and outputs are edited in the normal way. As soon as you select the required value you will be prompted in a dialog box to confirm that you want to force this value.
Signals 7 Alarms 7.1 Occurrence of alarms and events Attention is drawn to the presence of alarms and events by use of pop-up windows (Figure 7-1). In the case of alarms requiring acknowledgement and/or reset, there is also an audible signal and the LED display starts flashing. The use of pop-up windows and audible signals for this purpose is optional and can be enabled in Settings (Section 3.2.8).
Symbols in the alarm pop-up Unacknowledged alarm Alarm state acknowledged Normal state, existing alarm unacknowledged Normal state, unreset (only used for Extended alarms. In such cases, reset the alarm.) System event Deleting a pop-up Press ESC to delete a pop-up window without affecting the alarm or event. Canceling audible signal An audible signal can also be canceled by deleting the associated pop-up window with ESC. 7.
All recently received alarms are listed in this dialog box. Each line consists of an alarm symbol, the object name or notification text, and the date and time. The Alarm viewer tracks the state of an alarm as follows: If the alarm state changes (e.g. an alarm is acknowledged) the associated entry also changes. Tracking the alarm state Note Note that for each object, only the current alarm, i.e. the last alarm received, is displayed.
7.2.3 Alarm acknowledgement / Alarm & Event details Select ACNOWLEDGE to acknowledge the alarm. The Alarm viewer dialog box will re-appear (Figure 7-2). By selecting DETAILS you can switch to a dialog box which provides more information about the object responsible for triggering the alarm or event, and which displays the priority of the alarm message. Figure 7-3 Alarm details Figure 7-3 Event details OBJECT PROPERTIES lets you navigate directly to the alarm source.
Extended alarm After acknowledgement, Extended alarms will also need to be reset with the RESET option. You cannot do this until the object has returned to normal. Figure 7-4 Example of Extended alarm After the reset, you will be returned to the Alarm viewer. 7.3 Alarm & event history Go to the Alarming & functions dialog box to display the Alarm & event history.
The following information is displayed for a maximum of 30 entries: • All the most recently received alarms • The most recent alarm acknowledgements • The most recent events Note Note that it is not possible to acknowledge or reset alarms in the Alarm & event history. Unlike the Alarm viewer, the Alarm & event history only logs incoming alarms, but does not update the entries with any changes. As with Alarm viewer, you can invoke an individual alarm or event here, and view the details.
8 Access rights 8.1 Introduction There are seven user levels in the system. In the engineering process, each user group is defined with the associated Read and Write access rights (user level). Individual users are then assigned to one of these user groups. 8.2 Password When the plant is handed over, you will be told which users have been set up, and notified of the associated passwords. Users can then change their own passwords to suit their own preferences.
4 Acknowledge the user name with OK. 5 You will then be prompted to enter the password: Please enter the PASSWORD Enter the required password and confirm with OK A list of all the information describing the newly defined user will now appear.
8.4 Remove user To remove a user, proceed as follows: Note You can only remove users at a lower level in the hierarchy. 1 In the current site, select Alarming & functions > User definition. 2 Select Remove user. The next dialog box displays a list of all the users which your access rights entitle you to delete. 3 Select the user to be removed. 4 Confirm your instructions in the next pop-up window. 8.
9 Setting time schedules The Scheduler consists of a 7-day schedule and an exception schedule. You can use the scheduler to program the following: • Time-dependent on/off switch control and/or • Time-dependent setpoint adjustment In the 7-day schedule, you can define daily profiles to be repeated week after week. In the exception schedule, you define days which deviate from those defined in the 7-day schedule. The names and locations of these time schedules are defined on a plant-specific basis.
9.1.1 Editing the switching points The exact time and the state which comprise the entry are shown on the next line, and can be selected for editing. Confirm your entry by pressing OK. 1. To change the schedule for this day, select CHANGE PROGRAM. 2. Move from one entry to the next within the 24-hour schedule. The selected entry is marked by a small black arrow above the 24-hour schedule. 9.1.1.
9.2 Exception schedule The exception schedule contains two kinds of exception: • Exceptions which are stored locally in the time schedule and apply only to that specific time schedule; these are identifiable by the date information. • Exceptions which are stored in a calendar object and used by various time schedules. These are recognizable by their names, e.g. holidays without date information.
Figure 9-2 Exceptions for a specific day 9.2.2 Listing all the exceptions Use the EXCEPTIONS button in the Exceptions overview (Figure 9-1 ) to display a list of all the exceptions defined in the selected time schedule. You can access these with the associated direct access keys. Figure 9-3 Schedule exception list Wildcards You can use wildcards (*) to enter the date period. Note the wildcards used in the illustration above.
9.2.3 Create new local exception NEW LOCAL EXCEPTION allows you to create a standard exception with the current date and add it to the Schedule exception list (Figure 9-3). The next section describes how to adapt this exception to your own particular needs. 9.2.4 Editing a local exception Select a date entry from the Schedule exception list (Figure 9-3). A dialog box will appear (Figure 9-4), from which you can select the editing option you require.
Select EDIT PROFILE for access to the 24-hour profile of an exception. In this dialog box, you can select whether you want to modify the program or to delete all entries. Figure 9-6 Changing the profile of an exception Select CHANGE PROGRAM to invoke the editing mode. STOP Note! The priority should only be modified by fully qualified personnel. Select DELETE ALL ENTRIES. Acknowledge the data protection prompt. All entries will be deleted from the system.
9.2.5 Edit Calendar object Select a calendar object from the Schedule exception list. Figure 9-7 Editing a calendar object You can edit the date and profile as described in Section 9.2.4. Note Exceptions in a global calendar object can be edited only if the time scheduler is on the Primary Server. If this is not the case, an error message is displayed. STOP Note! When editing calendar entries, extreme caution is advised, as this can sometimes affect the exception programs of other time schedules.
10 Trend function and settings The PXM20 operator unit provides the user with five channels for trend logging, enabling five data points to be logged. The same dialog box is used for basic trend settings in all types of trend view (refer to Section 10.3). This dialog box is invoked when you set up a new data point (see Section 10.1). For channels which have already been set up, it can also be invoked by selecting Alarming & functions / Online Trend (see Section 10.2).
10.2 Displaying an existing trend Select the required channel via Alarming & functions > Online trend. If the adjacent symbol flashes, this indicates that logging is in progress. Figure 10-2 Overview of active trend logging and spare channels. Select the required channel. The main dialog box for the selected trend channel will open (Figure 10-3). From here, you can view graphs and edit parameters. The next section describes how to set the trend parameters and define the type of view required.
10.3 Main trend dialog box The main trend dialog box gives you access to the Trend configuration dialog box and to the various trend data views. Figure 10-3 Setting trend parameters and defining the view RELEASE CHANNEL stops the trend logging and deletes the trend configuration. 10.3.1 Trend configuration From the main trend dialog box (Figure 10-3) select Trend configuration . You can now modify the parameters for the required trend logging.
The individual parameters have the following meanings: On / Off Here, you should define the length of time over which the trend values are to be logged. Enter the sampling rate (logging interval) in days, hours, minutes and seconds. A logging interval of 0 results in COV logging (Change of Value). Define here what should happen to the trend logging when the memory limits are reached. If you select No, the first values will be overwritten by new values. With Yes, trend logging will stop.
10.3.2 Graphic view The Graphic view displays a graph of all the values in the PXM20 for the logged data point. Note The graph displayed with this option reflects past events only. To view the values in real time, select Graphic view online (Section 10.3.3). Before displaying the sampled values in a graph, you can adapt the display in Graphic view to your requirements, by modifying the following parameters in the Trend configuration dialog box (Figure 10-3).
Select GRAPHIC to confirm your settings and display the trend. Figure 10-6 Graphic view with a single channel Figure 10-7 Graphic view with two channels Setting guides A guide line can be set and moved by use of the <+> and <-> keys. The data display is also refreshed.
10.3.3 Graphic view online The Graphic view online displays the required value dynamically, i.e. in real time. Note To view all the values so far stored in the PXM20, select Graphic view (Section 10.3.2). Here, you can define the duration ("Record time"), and the high and low range limits for the value. Figure 10-8 Settings in the Graphic view. Under Record time you can define the period of time for which you want to display this dynamic trend.
Setting guides A guide line can be set and moved by use of the <+> and <-> keys. The value corresponding to the guide line is also displayed. 10.3.4 List view Instead of displaying the logged values in graph form, you can view them in list form.
11 Service support 11.1 Wiring test Notes • The wiring test must be carried out only by service and commissioning engineers when commissioning the system. • The PXM20 and PXM20-E operator units only support I/Os that are not configurable, i.e. dedicated I/Os on compact automation stations and I/Os on PTM modules. No support of UIs and I/Os on TX-I/O modules. • Therefore the preferred method for wiring test is the Point Test Tool.
– Follow the instructions in the display, and press the service pin of the required automation station.
List of all inputs and outputs For your information, the PXM20 operator unit displays a list of all inputs and outputs of the tested automation and control stations, grouped according to signal type (analog, binary or multi-state, see Figure 11-4). Module No. Signal: AI = Analog input AO = Analog output BI = Binary input etc. Figure 11-4 Analog signals list From here you can select the various inputs and outputs and display further information.
11.2 The Wink command In certain cases where third-party integration is involved, the PXM20 may need to be specifically identified for commissioning purposes. Note Although it exists in the PXM20, this command is not needed within the Desigo system. The identification process is carried out with the Wink command. Figure 11-5 The “Wink” command To send the Wink command, select Send service pin message. This immediately triggers the Wink signal.
11.3 Debug information Note These settings are not visible to all users. Debug information is helpful for troubleshooting, and is intended exclusively for development engineers. The latest entries are always displayed at the end of the list. Note The time entry is only valid once a PXC automation station has been identified. Select Debug information from the Alarming & functions dialog box.
Index key ...................................................................................... 7, 11 24-hour schedule ...........................................................................47 Edit entry ..................................................................................47 3rd party site ...................................................................................25 7-day schedule Copy 24-hour profile..................................................................
Dialog box .................................................................................14 Graphs ......................................................................................13 Operator field ............................................................................13 Pop-up ......................................................................................14 Title bar.....................................................................................12 Display saver ....................
ESC ..........................................................................................10 Info ...........................................................................................11 OK ............................................................................................10 Page Down .................................................................................9 Page Up......................................................................................9 Printing convention ..........
SAVE & EXIT ............................................................................51 Schedule exception list: .................................................................52 Scheduler.......................................................................................46 Service pin .....................................................................................62 Set date & time ..............................................................................19 Setting a setpoint .............
Override ....................................................................................17 Parameters ...............................................................................15 Power control ............................................................................15 Reset ........................................................................................42 Set date and time ......................................................................15 Site .....................................
Views ........................................................................................53 Trend configuration ........................................................................55 User Remove ....................................................................................45 User definition ................................................................................43 User groups ...................................................................................43 Users Adding ...........
Published by Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 www.buildingtechnologies.siemens.
