Operator unit PXM20
8Pages

Operator unit BACnet on LonTalk Networkable operator unit for viewing and operating one or several Desigo PX automation stations • Display with adjustable contrast • Energy saving LED backlight (series D and later) • Simple key operation with direct access to the required plant information • Generic operation and display of plant functions (alarm handling, time schedulers, calendars, setpoint adjustments, display of current values, etc.) • Integrated acoustic and/or visual collective alarm • Graphic online-trend function • Support of integrated access protection in the overall Desigo system • Ability to add or delete new users • Automatic logout • Heating curve graphics • System date and time setting • Context-sensitive help function • Installation in modular automation station PXC..-U or remote Building Technologies

The PXM20 operator unit ensures the convenient display and operation of Desigo PX automation stations via BACnet network communication. The graphics-based display with clear text and direct access via the keyboard ensure a most user-friendly operation. All values visible in the system can be displayed in accordance with the defined operator profile. Typical displays: • Display of current values • Setpoint and parameter settings • Maintenance and error messages • Alarm lists and single alarm messages with acknowledgement option and/or reset • Time schedulers (7-day schedules and exception...

Display Navigation keys (direct access keys and PageUp/PageDown keys): The direct access keys allow direct access to the relevant line. Possible functions: – Select value and start the value adjustment – Confirm new value – Start function – Open object The PageUp and PageDown keys are provided for page scrolling if a page contains more values than can be shown on the display at the same time. Alarm LED: The alarm LED lights up or flashes if an alarm is present in the system. Page Up-, Page Down keys Edit keys: These keys allow the selected values to be modified (<+> and <–>) and confirmed...

In the exception program, too, the exceptions are created, modified or deleted by using the navigation and editing keys. It is possible to define exception days (e.g. a bank holiday) as well as exception periods (e.g. holiday periods). Click the EXCEPTIONS field to display a list of all programmed exceptions. Online trend Info concept Access protection Auto logout and sleep mode Language versions The PXM20 operator unit provides the user with five channels for trend logging, enabling 5 data points to be logged. There are three separate ways of viewing the trend data: 1 Graphical view: Int...

The PXM20 operator unit is contained in a robust plastic housing, ideally suited for its many different mounting methods. All indicators and controls are mounted on the front cover of the unit (see page 2). The connections for the automation stations are incorporated on the back of the unit (see page 7). Mounting instructions The PXM20 is suitable for control panel front mounting or vertical panels (e.g. remote operating panels or similar units). The unit is also suitable for DIN rail snap-mounting. In addition, the PXM20 can be mounted direct on any modular automation station. Wiring test...

Technical data The device is classified as waste electronic equipment in terms of the European Directive 2012/19/EU (WEEE) and should not be disposed of as unsorted municipal waste. The relevant national legal rules are to be adhered to. Regarding disposal, use the systems setup for collecting electronic waste. Observe all local and applicable laws. General device data Operating voltage Safety extra-low voltage SELV Protective extra-low voltage PELV Frequency_ Internal fuse Thermic, automatic reset Operating data Main processor Communication processor Data backup in case of power failure...

Mounting options – For control panel mounting, remote operating panels, etc. – DIN rails – Direct on modular automation stations Connections See page 7 Housing protection standard Protection standard to EN 60529 IP 40 (built-in), else IP30 Protection class Isolation protection class III Ambient conditions Operation Class 3K5 to IEC 721 Temperature 0 ... 45 °C Humidity < 85 % rh Transport Class 2K3 to IEC 721 Temperature – 25 ... 65 °C Humidity < 95 % rh Standards, directives and approvals Environmental compatibility Dimensions Weight Product standard Automatic electronic controls for...

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