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ZN510;ZN511;ZN520;ZN521

Secondary Control Units
Zone Controllers
Date Last Saved: 9/16/2005 8:32:22 AM

Product Name(s): ZN510;ZN511;ZN520;ZN521
Product Description: The ZN510/511/520/521 zone controller provides digital control for HVAC equipment. The zone controller can operate as a stand-alone device or part of a building automation system. • ZN510 & 520: factory installed • ZN511 & 521: field installed
Product Application(s): The ZN510/511 is designed for water-source heat pumps, two-pipe hydronic fan coil units, four-pipe hydronic fan coil units, or cabinet heaters. The ZN520/521 controls unit ventilators, fan coils, cabinet unit heaters, or blower coils.
Point Quantity Characteristics
Analog Input (AI): See Below Type 2 thermistor and resistor
Predefined inputs:
- zone temperature
- entering or leaving water temperature
- discharge air temperature
- zone temperature setpoint
- fan mode switch
Digital Input (DI): See Below Dry contact
Predefined inputs:
- occupancy
- condensate over flow
- low water temperature
- low pressure protection
- high pressure protection
Universal Input (AI or DI): N.A.
Analog Output (AO): N.A.
Digital Output (DO): See Below Triac (water source heat pump)
Predefined outputs:
- compressor 1
- compressor 2
- two-position outside air damper
- reversing valve
- fan on/off

Triac (fan coil)
Predefined outputs:
- fan high
- fan medium
- fan low
- 1 cool
- 1 heat
- two-position outside air damper
Universal Output (UO): N.A.
Other: See Below
Control Unit Model #:AIDIUIDOAOUOOther
ZN 510 5 5 6 2
ZN 511 5 5 6 2
ZN 520 7 4 10 4
ZN 521 7 4 10 4
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? Yes with a Trane wall mounted zone sensor
Can controller accept occupancy sensor input? Yes
Expander Boards N.A.
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1) - LonTalk TP/FT -10 @ 78.125 Kbps
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 sensor
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) Neuron 3150
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
None
Other
Clock Synchronization N.A.
Volatile Memory (RAM) Capacity 4k Bytes
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)* 56k bytes
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) These controls are user configurable via Rover service tool but not programmable.
Resident vs Non-Resident Program Execution All logic is resident on the controller.
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. Relies on building automation system for scheduling.
None. This controller has no scheduling features.
Other All units contain local occupancy inputs.
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 Energy management features/functions are resident in this controller. Local and system coordination available via communication link.
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 Coordinated by communications.
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 Control gains are adjustable via Rover Service tool.
Automatical-Dial Alarm Support N.A.
Does controller perform multiple retries and buffer/store alarm until connection is made? No
Are multiple destinations possible? N.A.
Upon controller power loss or hardware failure:
Are network communications affected? A single control powering down will not affect the rest of the network.
Is loss recognized on/by the network and alarm reported? N.A. - BAS function.
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? No, system clock is not integrated into any features.
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? Yes
Internal hardware failure? No
Open/shortened sensor? Yes, all sensors are tracked for validity.
Others?
 
Control Enclosure ZN511/521 are available in both plastic and metal enclosures for field retrofits.

ZN510/ZN520 are factory mounted in a unit's control box. There is no enclosure specifically for the digital control.
Power Supply Required
Voltage 24 VAC nominal
Class 2 Transformer
VA ZN510: 7.2VA
ZN511: 9VA
ZN520: 8.2VA
ZN521: 8.2VA

12 VA maximum per binary output
Surge Protection ZN511/521 meet CE requirements
ZN510/520 meet internal requirements
Underwriters Laboratories UL 94-5V (UL flammability rating for plenum use)

UL and C-UL 916 Energy Management System
FCC Part 15, Class A
CE ZN511/521:
Immunity
• EN 50082-1: 1997
• EN 50082-2: 1995
Emissions
• EN 50081-1: 1992 (CISPR 22)
LonMark Certified
Yes
No
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Yes
No
Not submitted for testing
Information not provided
Other