Campbell SDM-CD16ACA Product Manual Download Page 5 | Manualshive

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Summary of Contents for SDM-CD16ACA

Page 1: ...Revision 04 2022 Copyright 1987 2022 Campbell Scientific CSL I D 398 ...

Page 2: ...s under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs can be given on request It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment in support of this policy a Declaration of Hazardous Material and De...

Page 3: ... cell phones and aerials may also not be applicable according to your locality Some brackets shields and enclosure options including wiring are not sold as standard items in the European market in some cases alternatives are offered Details of the alternatives will be covered in separate manuals Part numbers prefixed with a symbol are special order parts for use with non EU variants or for special...

Page 4: ...e beginning work Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers Do not climb tripods or towers at any time and prohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers Use only manufacturer recommended parts materials and tools Utility and Electrical You can be kil...

Page 5: ...ntrolled device to SDM CD16ACA connections 5 4 1 3 Motor control 6 5 Address selection switches 7 6 Data logger programming 8 6 1 CRBasic programming 9 6 1 1 SDMCD16AC instruction 9 6 1 2 SDMSpeed instruction 9 7 Theory of operation 10 8 Program examples 11 8 1 CRBasic examples 11 8 1 1 Controlling two SDM CD16ACAs 11 8 1 2 Control temperature and fans 11 Table of Contents i ...

Page 6: ... logger control ports The SDM CD16ACA is a synchronously addressed data logger peripheral Three ports on the data logger are used to address the SDM CD16ACA then clock out the desired state of each of the 16 control ports Up to 15 SDM CD16ACAs may be addressed making it possible to control a maximum of 240 ports from the three data logger ports Compatible Campbell Scientific data loggers use the C...

Page 7: ...rol RELAY SPECIFICATIONS Arrangement Single pole double throw Break before make Contact material Gold clad silver Individual contact rating Normally Open rating 5 A 30 VDC 5 A 250 VAC GP 1 A 240 VAC pilot duty 3 A 120 VAC pilot duty 5 A 240 VAC resistive Normally Closed rating 1 A 30 VDC 2 A 277 VAC GP 3 A 125 VAC GP 2 A 120 VAC pilot duty 3 A 240 VAC resistive Coil voltage 11 to 18 VDC Coil resis...

Page 8: ...o use the data logger supply to power the SDM CD16ACA see Figure 3 1 p 3 For long term applications the lead acid power supply available with 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 CD16ACA for long term applications due to its large power requirements Figure 3 1 C...

Page 9: ... some extra protection may be required for the SDM control ports Please contact Campbell Scientific for further advice When connecting wires to the SDM signal ports please ensure they are at ground potential before making the connection by touching them to the earth terminal For data logger connections see Table 4 1 p 5 Multiple SDM CD16ACAs may be wired in parallel by connecting the data logger s...

Page 10: ...TION The order in which connections are made is critical Always connect 12 V first followed by ground then Control Ports NOTE The CR6 allows SDM operation through terminals C1 C2 and C3 as shown in Table 4 1 p 5 In addition the U terminals on the CR6 may be used in the same manner U1 U3 U5 U8 and U9 U11 are usable in the same Data Clock Enable order as the C terminals 4 1 2 Controlled device to SD...

Page 11: ... 3 Motor control The SDM CD16ACA is a UL approved Start Stop motor controller In Figure 4 3 p 7 a typical 5 Amp 115 VAC relay contact circuit shows how to control a three phase motor starter in a Motor Control Centre MCC Typically the data logger will automatically command the appropriate relay to energize the motor starter The relay in the SDM CD16ACA will remain latched until the data logger pro...

Page 12: ...CA relay outputs to MCC 5 Address selection switches Each SDM CD16ACA can have 1 of 15 addresses 0 to 14 Address 15 is reserved for the SDMTrigger instruction Shipped from the factory the address is set at 00 The following table shows switch position and the corresponding address see Figure 5 1 p 8 SDM CD16ACA 16 Channel AC DC Controller 7 ...

Page 13: ...served Figure 5 1 Addressing 6 Data logger programming In CRBasic the SDMCD16AC instruction is used to control the SDM CD16ACA Data loggers that are programmed with CRBasic include the CR6 CR3000 CR1000X CR800 CR850 and CR1000 The SDMSpeed instruction should also be used if the cable length is longer than 20 ft SDM CD16ACA 16 Channel AC DC Controller 8 ...

Page 14: ...e Source parameter is defined as a Long variable but it is dimensioned less than 16X Reps Source will act as a binary control for the instruction whose bits 0 15 will specify control ports 1 16 respectively In this situation 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 CD16ACA devices that will be controlled...

Page 15: ...iod specified is smaller than the minimum or larger than the maximum the data logger will default to the minimum or maximum bit period respectively Refer to CRBasic Editor Help for the default minimum and maximum bit period for each data logger 7 Theory of operation The SDM CD16ACA is a synchronously addressed peripheral C2 and C3 driven high by the data logger initiate a cycle While holding C3 hi...

Page 16: ...trol dld the SDM CD16ACA is used to control the temperature between 23 and 28 C in each of five greenhouses In each greenhouse the SDM CD16ACA controls a heating unit a refrigerating unit and an air mixing fan according to the following conditions Heating unit Activate when temperature 23 5 C Deactivate when temperature 25 5 C Cooling unit Activate when temperature 27 5 C Deactivate when temperatu...

Page 17: ...nteger set control dld the actual value used to control SDMCD the CD16_Output bits set the SDM CD16ACA ports bits 0 to 4 are for Heat 5 to 9 are for Cooling 10 to 14 are for Fans Program SDM CD16AC_greenhouse control dld uses an array of values to set the SDM CD16ACA control outputs Program SDM CD16AC_integer set control dld has the same function as program SDM CD16AC_greenhouse control dld but us...

Page 18: ...info campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website New Delhi DL India 91 11 46500481 482 info campbellsci in www campbellsci in South Africa Location Phone Email Website Stellenbosch South Africa 27 21 8809960 sales campbellsci co za www campbellsci co za Spain Locati...

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