Campbell Scientific Sdm-can

SDM-SW8A 8-Channel Switch Closure Input Module

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SDM-SW8A 8 Channel Switch Closure Module Revision: 7/10 MADE IN USA SDM - SW8A 8 CHANNEL SWITCH CLOSURE INPUT MODULE TO DATALOGGER 12V C3 C2 C1 IN C1 OUT 5V IN 1 5V IN 2 5V IN 3 5V IN 4 5V IN 5 5V IN 6 5V IN 7 5V IN 8 Copyright © 1987-2010 Campbell Scientific, Inc.

SDM-SW8A 8-Channel Switch Closure Input Module

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... all costs of merchantability or fitness for special, indirect, incidental, or consequential damages. This warranty shall not apply to Campbell Scientific, Inc. is : CAMPBELL SCIENTIFIC, INC. RMA#_____ 815 West 1800 North Logan, Utah 84321-1784 For all other warranties, expressed or implied, including...products that may not be issued. Warranty and Assistance The SDM-SW8A SWITCH CLOSURE INPUT MODULE is warranted by surface carrier prepaid. to repairing or replacing (at www.campbellsci.com/repair. Campbell Scientific, Inc.'s obligation under normal use and service for our ...

SDM-SW8A 8-Channel Switch Closure Input Module

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... of Operation 15 Appendix A. Power Supply Considerations 3 4. Measurement Applications 13 8.1 SPDT Switch Closure 13 8.2 SPST Switch Closure 13 8.3 DC Voltage Pulse 14 8.4 Duty Cycle 14 9. SDM-SW8A Table of Contents PDF viewers note: These page numbers refer to Dataloggers and Other SW8As 4 4.2 Sensor Connections 4 5. Use the Adobe Acrobat® bookmarks tab...

SDM-SW8A 8-Channel Switch Closure Input Module

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Measurement Jumpers 6 5. Instruction 102 - SDM-SW8A 9 List of Tables 1. Address Jumpers 5 4. Example Program Flow Chart A-2 ii SDM-SW8A to SDM-SW8A Connections 2 2. SDM-SW8A Front Panel 1 2. SDM-SW8A Address and Port Configuration Jumpers with Sensor Wiring Examples 5 3. Datalogger to SDM-SW8A Connections 3 3. SDM-SW8A Table of Contents List of Figures 1. Bit Period Values 8 6. SPDT Signal Conditioning by SDM-SW8A 13 A-1.

SDM-SW8A 8-Channel Switch Closure Input Module

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... Module (see Figure 1) measures up to October, 1988, the SDM-SW8 (no more SW8As are required, please consult Campbell Scientific's Marketing Department. Contact Campbell Scientific's Marketing Department for most applications, Campbell Scientific, Inc. SDM-SW8A Switch Closure Input Module 1. SDM-SW8As are not compatible with CR10s containing Instruction 15, and SDM-SW8s are available, but for update options if incompatibilities...

SDM-SW8A 8-Channel Switch Closure Input Module

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... Yes 20 feet 0.9"(H), 6.2"(L), 2.7"(W) 0.5 lbs. (0.23 kg) CR10(X), CR800, CR850, CR1000, 21X, CR23X, CR3000, CR5000, and CR7 TABLE 1. SDM-SW8A Switch Closure Input Module 2. Specifications Operating voltage: Current drain: Environmental: Measurement types: Input voltage threshold: Maximum input frequency: Minimum input pulse width: ... mA active (max) -25 to +50oC, 0 to 90% RH, noncondensing Switch closure (SPDT, SPST) DC voltage pulse From below 0.9 to SDM-SW8A Connections SDM-SW8A CR7 +12 +12 (see Note 1) C3 C2 C1 IN C1 OUT C3 C2 C1 not used (see Note 2) Datalogger CR1000, CR800, ...

SDM-SW8A 8-Channel Switch Closure Input Module

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... For long term applications where AC power is recommended for recharging, the lead acid power supply available with Campbell Scientific, Inc. This results from slight ground potentials created along with Campbell Scientific, Inc. For some applications it may mandate an external supply for the SW8A. 3 For short term ..., etc.) must be used (see Note 2) C3 C2 C1 IN C1 OUT (see Note 3) Notes: (1) If using a 21X and the SDM-SW8A was shipped after March 1, 2006, include this jumper. (3) If you're using an auxiliary power supply, instead of available analog input channels and...

SDM-SW8A 8-Channel Switch Closure Input Module

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... address is factory set to Dataloggers and Other SW8As The CABLE5CBL or a similar cable is used to connect the SDM-SW8A to the datalogger, power supply, and other SDM devices and a datalogger should be as short as possible and preferably does not exceed 20 ft. ALWAYS CONNECT GROUND... FIRST, followed by 12 V and then the Control Ports. 2. SDM-SW8A Switch Closure Input Module 4. Connections between the SW8A and compatible sensor types. 5. Internal Jumpers Inside the SW8A, jumpers must be possible for...

SDM-SW8A 8-Channel Switch Closure Input Module

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Address Jumpers Pins Address 1-8 2-7 3-6 4-5 00 c c c c 01 c c c nc 02 c c nc c 03 c c nc nc 10 c nc c c 11 c nc c nc 12 c nc nc c 13 c nc nc nc 20 nc c c c 21 nc c c nc 22 nc c nc c 23 nc c nc nc 30 nc nc c c 31 nc nc c nc 32 nc nc nc c 33 nc nc nc nc c = connected nc = not connected FIGURE 2. SDM-SW8A Address and Port Configuration Jumpers with Sensor Wiring Examples 5 SDM-SW8A Switch Closure Input Module TABLE 3.

SDM-SW8A 8-Channel Switch Closure Input Module

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...measurement will be dimensioned to the number of the first SW8A with which to store the results of its measurements to a variable array. The SDM-SW8A is programmed using either CRBasic or Edlog. TABLE 4. or Open Coll. Parameter & Data Type Dest Variable or Array Reps Constant SDMAddress...greater than are 0 through 15. The number of each channel configured for the measurement type. If the Reps parameter used to control the SDM-SW8A Eight-Channel Switch Closure module, and store the results of the SW8A measurement. In this parameter must be used in Figure 2. If...

SDM-SW8A 8-Channel Switch Closure Input Module

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... the temperature to determine the result that will be read on sequential channels. Numeric Function Code 0 Returns the state of the signal. SDM-SW8A Switch Closure Input Module Parameter & Data Type FunctOp Constant StartChan Constant Mult, Offset Constant, Variable, Array, or Expression Enter The ...is stored for low and a 1 is stored for the units of the module: positive integer: ROM and RAM are necessary to clock the SDM data. The result is the percentage of time the signal is bad The first channel that the datalogger uses to output in degrees C. A multiplier...

SDM-SW8A 8-Channel Switch Closure Input Module

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SDM-SW8A Switch Closure Input Module The syntax of our CRBasic dataloggers. TABLE 5. Table 5 shows the default, minimum allowable, and maximum bit period for CR3000: bit_rate=...

SDM-SW8A 8-Channel Switch Closure Input Module

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...in the datalogger program. If more Reps are good, a zero (0) indicates bad PROM, and a negative number indicates bad RAM. TABLE 6. SDM-SW8A Switch Closure Input Module 6.2 Edlog Programming Instruction 102, Table 6, is used but is helpful in "debugging." Eight channels from the first SW8A... to high or low states, respectively. A positive number (signature) indicates the PROM and RAM are requested than exist in all four functions are requested. SDM-SW8A Parameter Number 01: 02: 03: 04: 05: 06: 07: Data Type 2 2 2 2 4 FP FP Description Repetitions Module Address (00...

SDM-SW8A 8-Channel Switch Closure Input Module

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... SW8A does not respond, -99999 is equal to the number of all readings. The datalogger scan rate must be avoided by the datalogger are read (1..8). SDM-SW8A Switch Closure Input Module Parameter 4 specifies the first SW8A channel to be wired sequentially. Modules which discards first scan data. 10 Enter 1 for reading...

SDM-SW8A 8-Channel Switch Closure Input Module

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... SW8A has a "watchdog" counter which resets the processor under such conditions. When the module is bombed, NaN is stored in input locations for 20 minutes. SDM-SW8A Switch Closure Input Module 7.3 Watchdog Reset Any microprocessor may occasionally fail due to Theory of 65 clock line transitions. Requesting State produces 16 clock...

SDM-SW8A 8-Channel Switch Closure Input Module

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... Closure Input Module 'Program name: C:\Documents and Settings\nigel\My Documents\Customers\INBO\SDM-SW8A BOMB.CR1 'Date written: 13/07/2010 ' ' Declare array of flags Public Flag(9) As Boolean DECLARATIONS ... Average(8, duty, FP2,Flag(9)) EndTable SUBROUTINES Sub Subroutine1 SDMSW8A(state,8,0,0,1,1,0) SDMSW8A(duty,8,0,1,1,1,0) SDMSW8A(counts,8,0,2,1,1,0) EndSub PROGRAM BeginProg Scan(1,Sec, 3, 0) Call Subroutine1 ' If SDM-SW8A was just programmed or its processor is bombed, set intermediate processing disable Flag If Flag(1) = False Then Flag(9) = True 'Set Flag 9 If (...

SDM-SW8A 8-Channel Switch Closure Input Module

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...with the ground throw, a low state is made with the throw for 3 ms for the SW8A to ground (low state). SPDT Signal Conditioning by SDM-SW8A NOTE The 5V output located next to each of the 8 input channels is connected to the 5 V terminal located next to the input channel,...all SW8A measurements, the 100 Hz maximum input frequency and 5 ms pulse width specifications must make contact with the opposite throw, a change to 180 MPH. SDM-SW8A Switch Closure Input Module 8. When contact is maintained (0 V). The duty cycle of times at a throw, but until contact is in state will ...

SDM-SW8A 8-Channel Switch Closure Input Module

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... input filtering and 2 ms sampling frequency. The SW8A's maximum input frequency and 5 ms minimum pulse width specifications are calculated, assuming a sample interval of the SW8A. SDM-SW8A Switch Closure Input Module width becomes a limitation at least 1 second. The duty cycle measurement could be measured is defined by the equations, the error...

SDM-SW8A 8-Channel Switch Closure Input Module

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... for each bit on the falling edge of the byte received equals the jumpered address, the SW8A executes the command part, providing it is present. SDM-SW8A Switch Closure Input Module Signal Magnitude - At this happens, the SW8A prepares again to 4 - 5 V high, or the signal should be driven low by its...

SDM-SW8A 8-Channel Switch Closure Input Module

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SDM-SW8A Switch Closure Input Module 16

Campbell Scientific Sdm-can - SDM