User Manual

Automation controls
Operator units
Operation and monitoring: PXM..
3-22
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Siemens Switzerland Ltd
Building Technologies Division
3
Data sheet N9231
Operating voltage AC 24 V
DC 12...40 V
Frequency 50/60 Hz
Power consumption 4 W
9 VA
Display size Display area: 123 x 68 mm
No. of dots: 240 x 128 dots
Interface type LON-bus
RS 232-interface
Mounting In panel
On automation station PXC..-U
On DIN rail
Degree of protection IP40
Ambient temperature‚ operation 0...50 °C
Dimensions (W x H x D) 210 x 117 x 37 mm
Keyboard Keypad with plastic membrane and pressure point
Stock No. Product No.
BPZ:PXM20 PXM20
Operator unit with BACnet on LonTalk
The network-capable PXM20 operator unit allows for homogenous operation of a multitude of building
services plants at the automation level. The operator unit offers an operating keyboard and a high-res-
olution display for graphics and text. The PXM20 can be used on-site or remote for all plants connected
via a network. The operator unit can be integrated in a panel or plugged into a modular automation sta-
tion of the PXC..-U series.
Operating functions
Transparently organized function and quick-access keys allow even casual users to expertly operate the
unit. The operator unit offers the following operator functions (among others):
V Easy-to-understand user instructions via the plant function
V Full access to all actual values‚ setpoints‚ plant and operating states‚ and parameters
V Complete data point operation and setpoint entry via clear text
V Optical and acoustic alarm indication.
V Alarm management with acknowledgement function and alarm memory
V Graphical display for scheduler program‚ exception day calendar‚ online trend heating curve
V Summary of all important values via Favorites
V Support of multi-level access protection
PXM20
Data sheet N9234
Stock No. Product No.
BPZ:PXM20-E PXM20-E
Operator unit with BACnet on IP
Provides the same functionality as PXM20‚ but with BACnet/IP communication.
PXM20-E