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PV6436A, PVL6438N, PUL6438

Secondary Control Units
PV6436A, PVL6438N, PUL6438
Date Last Saved: 9/24/2008 2:19:10 PM

Product Name(s): PV6436A, PVL6438N, PUL6438
Product Description: LonWorks compatible, application specific controllers that are members of the Webs system.
Product Application(s): Variable are volume AHU units and Unitary HVAC control applications.
Point Quantity Characteristics
Analog Input (AI): N.A.
Digital Input (DI): See Below Dry Contact
Universal Input (AI or DI): See below 20 kOhm NTC


Potentiometer (500-10,500 Ohm)

100-100k Ohms

Transducer (0-10 Vdc)

Dry Contact

Analog Output (AO): See below 4-20mA/2-10Vdc
Digital Output (DO): See Below 20-30Vac/25-500mA
Universal Output (UO): N.A.
Control Unit Model #:AIDIUIDOAOUOOther
PVL6436A 4 6 6 3
PVL6438N 4 6 8 3
PUL6438 4 6 8 3
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
Both AO and DO
DO Only
Indicating status LED on each output?
AO and DO
AO Only
DO Only
Integral Flow Sensor? Yes - 0 to 2.0" wc - model PVL6436A and model PVL6438N
Integral Damper Actuator? Yes - PVL6436A
Can controller accept occupant override from thermostat?
Can controller accept occupancy sensor input?
Expander Boards
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
Lon Works BUS @ 78 kbs
External Communication Ports, Speeds and Access Devices Built-in Zone Control functions include a remote wall module interface and a scheduler. Connection for operator access to LonWorks Bus is provided by plugging the Serial LonTalk Adapter connector into the LonWorks Bus jack on the controller.
Additional Information (Optional)
Network Accessing Capabilities via Controller
Access controller only
Access controller plus additional controllers on network segment / LAN
Access all controllers on system
No access available on this controller
Controller Access Devices
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Zone-Based Interface Access Zone-based interface jack available at zone thermostat to provide access to the LonWORKS Bus. Serial LonTALK Adapter connector required.
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
*Note: This section covers the capabilities for accessing the controller or other parts of the network from the controller (i.e. 'bottom-up').
Standard access functionality is covered in the Architecture and Software sections.
**Does NOT include front-end OI functions. See vendor for specific functions available.
Functions Available Through Field Interface**:View ParamsChange ParamsChange
O&M SupportTAB/Cx Support
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Microprocessor(s) PVL6436A,PVL6438N,PUL6438:
Texas Instruments MSP430, containing 60kB flash memory.
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Clock Synchronization None
Volatile Memory (RAM) Capacity 2 kB
Volatile Memory (RAM) Uses
RAM use unrestricted
RAM use restricted as shown below
Information Not Provided
Program Execution / Calculation storage
Data / Trends / Alarms storage
Configuration / Parameter storage
Control Programming storage
Is Volatile Memory Supported By Battery? No
Battery Type(s) N.A.
Battery Life N.A.
Backup Battery Operating Time N.A.
Non-Volatile Memory Capacity (EEPROM/Flash)* 60kB Flash
8kB Flash (user program)
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage 8 Kb
Controller Operating System
Additional Information
* Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly impact system performance.
Can trend data be stored in this controller? No
How many total trend values can be stored? None
What is the controllers role in trending? None
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller? Pulled
When full, does controller automatically send up trend data, overwrite data, or stop logging data? None
Programming Method(s)
Resident vs Non-Resident Program Execution Resident
Resident/Supervisory. This controller supervises the scheduling of other controllers.
Resident/Stand Alone. This controller contains its own schedule.
Non-Resident. This controller is dependent upon another controller for its schedule.
None. This controller has no scheduling features.
Other This controller is dependant upon another controller for its own schedule, but is capable of stand alone operation
Resident Energy Management
Energy management algorithms for this controller can be custom programmed
Pre-programmed/built-in algorithms available, and are fully editable using custom programming
Pre-Programmed/built-in with limited editing via template-based programming
Controller is not typically used for energy management functions
Specific Pre-Programmed Algorithms Available
None (custom programming only)
None (not applicable)
Optimal Start/Optimal Stop
Peak Demand Limiting/Load Shedding
Economizer (enthalpy, dry-bulb, CO2, modulating/2-position, etc.)
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID)
Automatic PID Tuning Feature
Automatical-Dial Alarm Support
Does controller perform multiple retries and buffer/store alarm until connection is made?
Are multiple destinations possible?
Upon controller power loss or hardware failure:
Are network communications affected?
Is loss recognized on/by the network and alarm reported?
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Volatile memory functions?
Retained for life of backup battery
Upon restoration of power does the controller:
Auto-reboot without operator intervention?
Automatically reset/synchronize the clock?
Update all monitored functions?
Generate an alarm if backup battery is dead?
Upon network or communications failure does controller:
Continue to operate standalone?
Operate with last global settings or user-specified value? N.A.
Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
Does network automatically reconfigure upon restoration?
Does network store 'loss of communications' alarm with time of event?
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure?
Internal hardware failure?
Open/shortened sensor?
Control Enclosure
Power Supply Required
Voltage 20-30 VAC
VA W7750, W7752, W7753, W7761, W7762, W7763 require 20-30 VA

W7751 10 VA

PVL6436A,PVL6438N,PUL6438 21 VA (Controller and Actuater Load)
Surge Protection Information not provided
Underwriters Laboratories UL916
FCC Part 15, Class B
CE Yes
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided