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Summary of Contents for Campbell SDM-CD16AC
- Page 1 SDM-CD16AC 16-Channel AC/DC Relay Controller Revision: 9/19 Copyright © 1987 – 2019 Campbell Scientific, Inc.
- Page 2 Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service for twelve months from the date of shipment unless otherwise specified in the corresponding product manual. (Product manuals are available for review online at www.campbellsci.com.) Products not manufactured by CSI, but that are resold by CSI, are warranted only to the limits extended by the original manufacturer.
- Page 3 Campbell Scientific company serves your country. To obtain a Returned Materials Authorization (RMA) number, contact CAMPBELL SCIENTIFIC, INC., phone (435) 227-9000. Please write the issued RMA number clearly on the outside of the shipping container. Campbell Scientific’s shipping address is: CAMPBELL SCIENTIFIC, INC.
- Page 4 Periodically (at least yearly) check electrical ground connections. • WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.
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Page 5: Table Of Contents
Control Temperature and Fans ............ 10 Figures 1-1. SDM-CD16AC face panel ..............1 3-1. Connection block diagrams ..............3 4-1. Switch operation...................5 4-2. Typical wiring application ..............6 4-3. SDM-CD16AC relay outputs to MCC ..........7 5-1. Addressing ...................8 Tables 4-1. Data Logger to SDM-CD16AC Connections (see caution) ....4... - Page 6 Table of Contents CRBasic Examples 8-1. Controlling Two SDM-CD16ACs............10 8-2. Using an Array to Set SDM-CD16AC Control Outputs ....11 8-3. Using an Integer to Set SDM-CD16AC Control Outputs ....12...
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Page 7: Function
The SDM-CD16AC is a synchronously addressed data logger peripheral. Three ports on the data logger are used to address the SDM-CD16AC, then clock out the desired state of each of the 16 control ports. Up to 16 SDM-CD16ACs may be addressed, making it possible to control a maximum of 256 ports from the three data logger ports. -
Page 8: Control Specifications
Campbell Scientific data loggers should be used, allowing the batteries to be float charged. It is not recommended that the data logger alkaline supply be used to power the SDM-CD16AC for long- term applications due to its large power requirements. -
Page 9: Installation
• Use minimum 60/75 °C wire. • Input power must be connected to a class 2 supply only. All Campbell Scientific power supplies meet the class 2 supply requirements. CAUTION Cables connecting the terminals of the data logger and SDM... -
Page 10: Wiring
Multiple SDM-CD16ACs may be wired in parallel by connecting the data logger side of one SDM-CD16AC to the next. The CABLE5CBL-L or an equivalent cable is used to connect the module to the data logger. A 0.3 m (1 ft) cable length should be sufficient when both data logger and SDM-CD16AC are housed within an ENC12/14;... -
Page 11: Controlled Device To Sdm-Cd16Ac Connections
Coil Is Not Energized (OFF) FIGURE 4-1. Switch operation In most applications, the SDM-CD16AC acts as a switch (controllable break) in one wire of the circuit powering the controlled device. One side of this break may have power (hot). FIGURE... -
Page 12: Motor Control
FIGURE 4-2. Typical wiring application 4.1.3 Motor Control The SDM-CD16AC is a UL approved Start/Stop motor controller. In the figure below, a typical 5 Amp 115 VAC relay contact circuit shows how to control a three phase motor starter in a Motor Control Center (MCC). Typically, the data logger will automatically command the appropriate relay to energize the motor starter. -
Page 13: Address Selection Switches
FIGURE 4-3. SDM-CD16AC relay outputs to MCC Address Selection Switches Each SDM-CD16AC can have 1 of 16 addresses. Shipped from the factory, the address is set at 00. The following table shows switch position and the corresponding address (see FIGURE 5-1). -
Page 14: Data Logger Programming
SDMCD16AC(Source, Reps, SDMAddress) Remarks A port on an SDM-CD16AC is enabled/disabled (turned on or off) by sending a value to it using the SDMCD16AC() instruction. A non-zero value will enable the port; a zero value disables it. The values to be sent to the CD16AC are held in the Source array. -
Page 15: Sdmspeed() Instruction
Source (1) will be used for the first Rep; Source (2) will be used for the second Rep, and so on. Reps: The Reps parameter is the number of SDM-CD16AC devices that will be controlled with this instruction. SDMAddress: The SDMAddress parameter is used to define the address of the CD16AC that will be controlled with this instruction. -
Page 16: Program Examples
C1 (LSB first) on the falling edge of the C2 clock. The SDM-CD16AC shifts in the C1 data bit on the rising edge of the C2 clock. The first 8 bits clocked out represent the SDM-CD16AC address. If the address matches the SDM-CD16AC's address, the SDM-CD16AC is enabled. - Page 17 Cooling, 10 to 14 are for Fans CRBasic Example uses an array of values to set the SDM-CD16AC control outputs: CRBasic Example 8-2. Using an Array to Set SDM-CD16AC Control Outputs 'Program name: SDMCD16Example1.CR1 '\\\\\\\\\\\\\\\\\\\\\\\\\ DECLARATIONS ///////////////////////// Public Flag(8)
- Page 18 Boolean as Long CD16_Output as Long 'Note: CD16_Output bits set the SDM-CD16AC ports. bits 0 to 4 are for Heat, '5 to 9 are for Cooling, 10 to 14 are for Fans '\\\\\\\\\\\\\\\\\\\\\\\\\\\ PROGRAM //////////////////////////// BeginProg Scan(5,Sec, 3, 0) I = 1 (Temp(I) <...
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