Extended Digital Controller

Transcription

1 The Metasys Extended Digital Controller Metasys Network Sales Resource Manual 635 Application Specific Controllers Section Product Bulletin Issue Date 1093 Extended Digital Controller (DX-9100) is the ideal digital control solution for multiple chiller or boiler plant applications, air handling units, or distributed lighting control. As a standalone controller, the DX-9100 provides a real-time clock, extendable I/O, and graphic software programming to target a variety of applications. Individual point monitoring and control is available through the front panel LED display. The DX-9100 also connects to Metasys over the N2 Bus, integrating its point and control information with the entire Metasys Network. Figure 1: DX-9100 Features and Benefits Real-time Clock and Scheduling Program Stored In EEPROM Additional Analog and Binary I/O Combinations Both Graphic and Characterbased Configuration Tools Dynamic Data Access Networking Software Capabilities Built-in Local Status Display Control Panel Standalone control System reliability Accommodates the I/O type and count needed for the job Graphical GX tool for programming, or hand-held SX tool for service personnel s troubleshooting or on-the-fly adjustment Facility-wide control efficiencies and cost-effective information sharing Direct access to point control and information 1993 Johnson Controls, Inc. 1 Order No

2 N1 LAN NCU NCU Operator Workstation AHU UNT DX-9100 NEU Controller XT XP LCP XT XP N2-Bus XT XP XP N2-Bus DX-Bus dxpb1 Figure 2: Extended Digital Controller on the Metasys Network 2 Application Specific Controllers Extended Digital Controller

3 F lexible Installation The Extended Digital Controller can be installed using either the existing mounting holes or via a DIN rail. You can mount the DX-9100 into any enclosure or directly onto the controlled equipment: both mounting options present the same attractive yet robust design. The separate mounting and wiring base also make the DX-9100 easy to install--first you connect the field wiring, and then install the controller. Figure 3: DX-9100 With Mounting Base E xtension Modules Extension Modules (XTs, XPs) are submodules that provide various combinations of analog and binary I/O points. They may be mounted next to the controller on the same DIN rail, or remotely, up to 1200 yards from the controller. Up to eight submodules can connect to the Extension Bus, which has the same physical characteristics as the Metasys N2 Bus. Figure 4: Extension Modules Application Specific Controllers Extended Digital Controller 3

4 Table 1: DX Configuration Point Type Quantity Characteristics DX-9100 XT Analog Inputs VDC (300 K ohm ) 0/4 20 ma DC (100 ohm) RTD (1000 ohm nickel and 1000 ohm platinum) Binary Inputs 8 4/8/16 Dry Contacts Binary Outputs 6 4/8/16 24 VAC Triacs 0.5 amps XT only: Relay Contact (250 V, 3 amps AC) Analog Outputs VDC (10 ma max.) or 0/4-20 ma DC 0-10 VDC (10 ma max.) only Table 2: XT Configuration Maximum Number of XTs per DX 8 Maximum Number of I/O for each XT 16 (8 analog) Maximum Number of I/O per DX 64 C onvenient Configuration Setup The Extended Digital Controller does not need to be programmed in the traditional sense. Instead, the control algorithms, time programs, and input/output point assignments are configured by a graphic configuration tool. The graphic software runs on an IBM-compatible computer, which plugs into the controller s N2 Bus. Program data and parameters loaded into the controller and extension modules are stored into EEPROM, so there is no need to reload software after a loss of power. Real time and operating data in the controller are stored in batterybacked RAM. Configuring a controller and its extension modules is a simple matter of filling in a flowchart diagram that connects inputs to control and logic blocks, then closing the control loop by making the connection from the control and logic blocks to the outputs. As the flowchart is being filled in, the setpoint parameters, gains, alarm limits, start and stop times, and so forth are added around the input and outputs to complete the configuration. B uilt-in Display Panel Once the controller and its extension modules are configured, the operating parameters and input/output values can be seen at the display panel built into the controller. Outputs can be manually overridden and operating parameters may be changed by an operator who has plugged his security key into the controller. The same information viewed on the face of the controller can be displayed and changed from any of the Metasys operator devices. A pplication Flexibility The Extended Digital Controller can be configured to meet a wide variety of basic HVAC and multiple boiler or chiller central plant applications. Preconfigured examples are available for common applications to use as a foundation for customizing to your particular facility. If the preconfigured examples don t cover your requirements, you can instead configure a totally customized process. In addition, points unused in the control scheme can be used in non-critical supervisory or control applications by the Metasys Network. 4 Application Specific Controllers Extended Digital Controller

5 N etworking Capabilities As powerful as the Extended Digital Controller is by itself, your facility will benefit even more when controllers are part of a larger Metasys Network. Each DX Controller can connect to the Metasys N2 Bus. Either a Network Control Unit or Companion Workstation can be programmed to provide added energy management and supervisory control capabilities, such as trend log, historical data storage, plant-to-plant interlocking, and more. The Metasys Dynamic Data Access networking software, available from the Network Control Unit, makes information from each controller available throughout the facility, so that it is possible, for example, to reset the boiler or chiller discharge temperature setpoint based on the demand requirements of a group of application specific controllers. Dynamic Data Access also makes sensor values, operating status, and other parameters in the controller available to operators anywhere in your facility. Companion Workstation AHU DX-9100 XT XP LCP XT XP XP N2-Bus DX-Bus dxpb2 Figure 5: Extended Digital Controller Under Companion Application Specific Controllers Extended Digital Controller 5

6 P recise, Flexible Control As a member of either the fully integrated system or as a standalone controller, the DX Controller represents the best way to fully optimize the operation of your refrigeration, HVAC, or lighting control applications. It combines ease of setup and operation, flexibility of application, and precise control for comfort and energy management. 6 Application Specific Controllers Extended Digital Controller

7 Notes Application Specific Controllers Extended Digital Controller 7

8 S pecifications Product Extended Digital Controller (DX-9100) DX Controller (DX ) DX Mounting Base (DX ) DX Wiring Protection Kit (DX ) Power Requirements 24 VAC +/- 10% at 50/60 Hz Ambient Operating Conditions 32 to 122 F (0 to 50 C) 10 to 90% Non-Condensing RH Ambient Storage Conditions 0 to 160 F (-20 to 70 C) 5 to 95% RH Dimensions (H x W x D) 7.9 in. x 7.2 in. x 3.9 in. (200 x 184 x 100 mm) Shipping Weight 4.7 lbs (2.2 kg) Agency Listings UL Listed and CSA Certified Extension and Expansion Modules XT-9100 XP-9102 XP-9103 XP-9104 XP-9105 XP-9106 Extension Module 6 Analog Inputs, 2 Analog Outputs 8 Digital Outputs (triacs) 4 Digital Inputs, 4 Digital Outputs (triacs) 8 Digital Inputs 4 Digital Outputs (relay) The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. Controls Group FAN E. Michigan Street Metasys Network Sales Resource Manual P.O. Box 423 Printed in U.S.A. Milwaukee, WI Application Specific Controllers Extended Digital Controller