DDC Online direct digital controls
Trane - Tracker Light Commercial System  

ZN524

Secondary Control Units
Water-Source Heat Pump Controller
Date Last Saved: 7/17/2006 10:03:56 AM

Product Name(s): ZN524
Product Description: The ZN524 is a unit controller for water-source heat pumps which can operate as a stand-alone device or part of a building automation system. The ZN524 is factory installed.
Product Application(s): The ZN524 is used to control standard efficiency horizontal and vertical units; high-efficiency horizontal and vertical units; and console water source heat pumps.
Point Quantity Characteristics
Analog Input (AI): 8 • Thermistor, 10k ohm
• 4-20mA
• Resistive, 1k ohm potentiometer
Digital Input (DI): 6 Dry Contact 24 Vac
Universal Input (AI or DI): 2 4-20mA
Analog Output (AO): N.A.
Digital Output (DO): 10 Triac 24 Vac
Universal Output (UO): 1 Triac 24 Vac
Other: N.A.
Control Unit Model #:AIDIUIDOAOUOOther
ZN524 8 6 2 10 1
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
Other
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
Other
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
No
Both AO and DO
DO Only
Other
Indicating status LED on each output?
No
AO and DO
AO Only
DO Only
Other
Integral Flow Sensor? N.A.
Integral Damper Actuator? N.A.
Can controller accept occupant override from thermostat? N.A.
Can controller accept occupancy sensor input? N.A.
Expander Boards N.A.
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1) - LonTalk TP/FT-10A (Trane Comm5, proprietary)
External Communication Ports, Speeds and Access Devices (1) - Rover Service Tool
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
Other
Controller Access Devices
Laptop/PC
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Other
Zone-Based Interface Access
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
Laptop/PC
none
Other
*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
Programs/Logic
O&M SupportTAB/Cx Support
Laptop/PC
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Other
Microprocessor(s) Information not provided
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
None
Other
Clock Synchronization N.A.
Volatile Memory (RAM) Capacity N.A.
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
Others
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)* N.A.
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other
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? N.A.
What is the controllers role in trending? Provide data to SI unit for trending
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller? Yes, pushes data to SI
When full, does controller automatically send up trend data, overwrite data, or stop logging data? N.A.
Programming Method(s) The ZN524 controller can be configured using a Trane Rover Service Tool, a local display, or a Tracker workstation.
Resident vs Non-Resident Program Execution The ZN524 can operate as a stand alone controller with resident programming and can accept communicated values from the SI unit.
Scheduling
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
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
Others
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.)
Other
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) PI
Automatic PID Tuning Feature No
Automatical-Dial Alarm Support No
Does controller perform multiple retries and buffer/store alarm until connection is made? Yes
Are multiple destinations possible? Not from the controller, this is a function of the SI unit.
Upon controller power loss or hardware failure:
Are network communications affected? No
Is loss recognized on/by the network and alarm reported? Yes
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Other
Volatile memory functions?
Lost
Retained for life of backup battery
Other
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Yes
Automatically reset/synchronize the clock? N.A.
Update all monitored functions? Yes
Generate an alarm if backup battery is dead? N.A.
Upon network or communications failure does controller:
Continue to operate standalone? Yes
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.)
Yes
Does network automatically reconfigure upon restoration? Yes
Does network store 'loss of communications' alarm with time of event? Yes
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? No
Internal hardware failure? No
Open/shortened sensor? Yes
Others?
 
Control Enclosure Factory installed with no enclosure
Power Supply Required
Voltage 18 - 32 VAC (24 VAC, 300 mA nominal)
VA 24 VA
Surge Protection Meets CE surge protection requiremnets for industrial applications
Underwriters Laboratories UL and CUL 916 Energy Management
FCC Part 15, Class A
CE
LonMark Certified
Yes Version 3.3
No
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Yes
No
Not submitted for testing
Information not provided
Other • IEC 1000-4-2 (ESD)
• IEC 1000-4-4 (EFT)
• IEC 1000-4-5 (Surge)