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ZN253 Zone Controller

ZN253 Zone Controller

Zone Controller

The ZN253 is a fully programmable, native BACnet Advanced Application Controller (AAC) designed for controlling a single zone in a building. The ZN253 is well suited for unit ventilator and packaged HVAC applications that require multiple analog outputs for modulating valves or dampers. It communicates on an EIA-485 LAN using BACnet MS/TP or BACnet over ARCNET communications and connects seamlessly to the WebCTRL® building automation system.

Description

Specification
 BACnet Support:Conforms to the Advanced Application Controller (B-AAC) Standard Device Profile as defined in ANSI-ASHRAE Standard 135-2004 (BACnet) Annex L.
Brand/ ManufacturerALC
Communication Ports:The following ports are available: EIA-485 port for ARCNET 156 Kbps or MS/TP (9600 bps – 76.8 Kbps) Local access port for system start-up and troubleshooting Rnet port for sensors and local operator interfaces
Binary Outputs:Two binary outputs, relay contact rated at 1A max @ 24V-ac, configured normally open
Analog Outputs:Three analog outputs, 0-10 V-dc with 8-bit resolution.
Universal Inputs:Five inputs with 10-bit A/D resolution for dry contact or Type 2 thermistors.
Microprocessor:High-speed 16-bit microprocessor with ARCNET communication co-processor
Memory:512 KByte non-volatile battery-backed RAM, 1 MByte flash memory, 16-bit memory bus
Status Indicators:LED status indicators for EIA-485 communication, running, error, power and all binary outputs
Module Addressing:Rotary dip switches for intuitive network addressing of modules
Listed ByUL916 (Canadian Std C22.2 No. 205-M1983), CE, FCC Part 15 – Subpart B – Class A
Addressing:Rotary dip switches for intuitive network addressing.
Environmental Operating Range:0F to 13oF (-17.8C to 54.4oC); 10 to 90% relative humidity, non-condensing
Power Requirement:24 V-ac ± 10%, 26 V-dc (25 V min, 30 V max), 50 to 60Hz, 12 VA.
Physical:

Rugged GE C2950 Cycoloy plastic

Weight:0.6lb
Dimensions:
Overall
Width: 5-1/16” (129mm)
Height: 5-11/16” (144mm)
Depth: 1-1/2” (38mm) min. panel depth
Mounting:Two mounting holes center line as at left with 5-5/16”
(135mm) spacing (h…
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