Campbell Hausfeld Network Card SDM CD16AC User Manual

SDM-CD16AC 16 Channel  
AC/DC Controller  
Revision: 8/07  
C o p y r i g h t  
©
1 9 8 7 - 2 0 0 7  
C a m p b e l l S c i e n t i f i c , I n c .  
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SDM-CD16AC Table of Contents  
PDF viewers note: These page numbers refer to the printed version of this document. Use  
the Adobe Acrobat® bookmarks tab for links to specific sections.  
1. Function........................................................................1  
2. Control Specifications.................................................2  
3. Power Considerations.................................................2  
4. Installation....................................................................4  
4.1 Wiring.......................................................................................................5  
4.1.1 SDM-CD16AC Power and Control Connections ...........................5  
4.1.2 Controlled Device Connections ......................................................5  
4.1.3 Motor Control .................................................................................6  
5. Address Selection Switches.......................................7  
6. Datalogger Programming............................................8  
6.1 CRBasic Programming .............................................................................8  
6.2 Edlog Programming..................................................................................9  
7. Theory of Operation ..................................................10  
8. Program Examples ....................................................10  
8.1 CRBasic Example...................................................................................10  
8.2 Edlog Example .......................................................................................11  
Figures  
1. SDM-CD16AC Face Panel.........................................................................1  
2. Switch Operation ........................................................................................3  
3. Connection Block Diagrams.......................................................................3  
4. Typical Wiring Application........................................................................6  
5. CD16AC Relay Outputs to MCC ...............................................................7  
6. Addressing..................................................................................................8  
Table  
1. Datalogger to SDM-CD16AC Connections ...............................................4  
2. Base 10 to Base 4 Reference Chart.............................................................9  
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SDM-CD16AC 16 Channel AC/DC  
Controller  
O N  
O F F  
A U T O  
1
1 6  
C 2  
C 2  
1 6  
C 2  
2
C 2  
C 2  
1 6  
C 2  
3
C 2  
C 2  
4
1 6  
C 2  
C 2  
C 2  
5
C 2  
1 6  
C 2  
C 2  
C 2  
6
1 6  
C 2  
C 2  
7
1 6  
C 2  
C 2  
C 2  
8
C 2  
1 6  
C 2  
9
C 2  
C 2  
1 6  
C 2  
1 0  
C 2  
C 2  
1 6  
1 1  
C 2  
C 2  
S/N:  
C 2  
1 6  
1 2  
C 2  
C 2  
1 3  
C 2  
1 6  
C 2  
1 4  
C 2  
C 2  
1 6  
1 5  
C 2  
C 2  
O N  
1 6  
C 2  
1 6  
O F F  
A U T O  
C 2  
C 2  
MADE IN USA  
1 6  
C 2  
+ 1 2 V  
G N D  
1 6  
C 1  
C 2  
C 2  
C 2  
C 3  
C 2  
C 2  
C 2  
C 2  
INPUT: 12 VDC  
LOAD:  
5
5
A
A
277 VAC 1/6 HP  
125 VAC 1/10 HP  
SDM-CD16AC  
16 CHANNEL AC/DC CONTROLLER  
Logan, Utah  
U
L
LISTED  
5Z21  
S
E
S
S
E
INDUSTRIAL CONTROL EQUIPMRNT  
R
D
D
A
U
L
FIGURE 1. SDM-CD16AC Face Panel  
1. Function  
The SDM-CD16AC has 16 AC/DC relay control ports (see Figure 1). Each relay  
port can be controlled by a datalogger or controlled manually with a manual  
override toggle switch.  
The toggle switch has three positions; "ON" and "OFF" for manual override,  
and "AUTO" for datalogger control. In the "ON" position, the common  
(COM) and normally open (NO) contacts are closed (see Figure 2). In the  
"AUTO" position, the state of the relays are controlled by the datalogger  
control ports.  
The SDM-CD16AC is a synchronously addressed datalogger peripheral.  
Three ports on the datalogger 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 datalogger ports.  
In CRBasic, the SDMCD16AC instruction is used to control the SDM-  
CD16AC. In Edlog, either I/O Instruction 104 (CR10(X), CR23X, 21X) or  
Instruction 29 (CR7) is used.  
Ensure that the datalogger contains the appropriate instruction  
prior to system deployment. The SDM-CD16AC is not  
compatible with our CR200-series, CR500, or CR510  
dataloggers.  
NOTE  
1
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SDM-CD16AC 16 Channel AC/DC Controller  
2. Control Specifications  
Operating voltage: 12 VDC nominal (9 to 18).  
Current drain at 12 VDC: 6 mA quiescent; 45 mA per active LED (switch on  
or auto active).  
Total cable length: 20 ft (for most applications), 600 ft (possible for CR7)  
Toggle switch: ON/OFF manual override; AUTO for datalogger control.  
Underwriters Laboratories (UL) and Canadian Underwriters Laboratories  
(CUL) listed product. UL and CUL listing number is 5Z21.  
RELAY SPECIFICATIONS  
Arrangement: Single pole double throw, Break before make  
Contact material: Gold-clad silver  
Individual contact rating: 5 A at 30 VDC, .3 A at 110 VDC, 5 A 1/10 HP at  
125 VAC, 5 A 1/6 HP at 277 VAC  
Coil voltage: 9 to 18 VDC  
Coil resistance: 360 Ohms±10%  
Expected life (contact closures): Mechanical 107  
Actuation/Release time: Approx. 4 ms  
Operating temp.: -40° to 70°C  
3. Power Considerations  
The SDM-CD16AC power requirements are large compared to most CSI  
products. For most applications an external power supply (see Figure 3) is  
recommended to power the SDM-CD16AC.  
For some applications it may be convenient to use the datalogger supply to  
power the SDM-CD16AC (see Figure 3). For long-term applications, the lead  
acid power supply available with CSI dataloggers should be used, allowing the  
batteries to be float charged. It is not recommended that the datalogger  
alkaline supply be used to power the SDM-CD16AC for long term  
applications.  
If the datalogger lead acid supply is used, the number of SDM-CD16AC's that  
can be powered is limited by the 300 mA current sourcing capability of the  
wall charger. With a continuous 6 mA current drain per SDM-CD16AC and  
45 mA per active LED, a maximum of 6 LEDs may be powered by the  
datalogger, after which, more current is drawn than can be sourced by the wall  
charger. If this condition is maintained, it will ultimately lead to battery deep  
discharge, requiring new batteries.  
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SDM-CD16AC 16 Channel AC/DC Controller  
Position of Contacts When  
Coil is Energized (ON)  
Position of Contacts When  
Coil Is Not Energized (OFF)  
FIGURE 2. Switch Operation  
EXTERNAL  
9 TO 18 VDC  
+
GND  
12 V  
SDM-CD16AC  
DATALOGGER  
C1 or SDM-C1  
C2 or SDM-C2  
C3 or SDM-C3  
Connection With External Supply (see note on next page)  
GND  
12 V  
SDM-CD16AC  
C1 or SDM-C1  
C2 or SDM-C2  
C3 or SDM-C3  
DATALOGGER  
Connection with Datalogger Supply (see note on next page)  
FIGURE 3. Connection Block Diagrams  
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SDM-CD16AC 16 Channel AC/DC Controller  
TABLE 1. Datalogger to SDM-CD16AC Connections  
Connection  
Order  
SDM-CD16AC Datalogger (see note) Function  
First  
12 V  
12 V on datalogger or Power  
external supply  
Second  
Gnd  
C1  
Gnd  
Common ground  
Data  
SDM-C1 (CR3000,  
CR5000) or C1 (other  
dataloggers)  
C2  
C3  
SDM-C2 (CR3000,  
CR5000) or C2 (other  
dataloggers)  
SDM-C3 (CR3000,  
CR5000) or C3 (other  
dataloggers)  
Clock  
Enable  
On a CR7, SDMs connect to the ports at the upper right corner  
of the 700X Control Module. On a CR9000X, SDMs connect to  
the ports on the CR9032 CPU Module, and on a CR9000, SDMs  
connect to the ports on the CR9080 PAM Module.  
NOTE  
If the 21X power supply is used to power the SDM-CD16AC, all low level  
analog measurements (thermocouples, pyranometers, thermopiles, etc.) must  
be made differentially. This is a result of slight ground potentials created  
along the 21X analog terminal strip when the 12 V supply is used to power  
peripherals. This limitation reduces the number of available analog input  
channels and may mandate an external supply for the SDM-CD16AC.  
4. Installation  
The SDM-CD16AC must be installed in an enclosure that provides a  
pollution degree 2 environment (normally, only nonconductive pollution.  
However, a temporary conductivity caused by condensation may be  
expected). All Campbell Scientific enclosures meet this requirement.  
Use copper conductors only.  
Wire Range: 30 14 AWG  
Tightening Torque: 5 7 in./lb.  
Use minimum 60/75 degree C wire.  
Input power must be connected to a class 2 supply only. All Campbell  
Scientific power supplies meet the class 2 supply requirements.  
The order in which connections are made is critical.  
Always connect 12 V first, followed by ground, then Control  
Ports.  
CAUTION  
4
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SDM-CD16AC 16 Channel AC/DC Controller  
Cables connecting the terminals of the datalogger and  
CAUTION  
SDM device should be kept as short as possible to  
minimize the risk of corruption of the signals and damage  
from induced surges. Where long cable runs (>3 m) are  
unavoidable and the cables run outside, some extra  
protection may be required for the SDM control terminals.  
Please contact Campbell Scientific for further advice.  
When connecting wires to the SDM signal terminals please  
ensure they are at ground potential before making the  
connection, e.g. by touching them to the earth terminal.  
For datalogger connections, see Table 1.  
Multiple SDM-CD16AC's may be wired in parallel by connecting the  
datalogger side of one SDM-CD16AC to the next. For CR10 and 21X  
dataloggers, the total length of the cables connecting the SDM-CD16AC's  
should not exceed 20 feet.  
Total cable lengths in excess of 20 feet will adversely influence  
communication performance. For CR7 dataloggers, the total cable length  
should not exceed 600 feet.  
4.1 Wiring  
4.1.1 SDM-CD16AC Power and Control Connections  
Refer to Figure 3 and Table 1 for SDM-CD16AC operating power and control  
connections to the datalogger.  
4.1.2 Controlled Device Connections  
DANGER!  
ELECTROCUTION HAZARD! USE EXTREME CAUTION  
WHEN WORKING WITH HIGH VOLTAGE INPUTS. DO  
NOT COME IN CONTACT WITH HOT LEADS!  
Figure 2 shows how the switches in each channel operate. NO means  
“normally open”, NC means “normally closed”. COM means “common” to  
NO and NC.  
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 4 shows an example.  
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SDM-CD16AC 16 Channel AC/DC Controller  
Device  
NO  
NC  
COM  
Neutral (-)  
Hot (+)  
FIGURE 4. Typical Wiring Application  
4.1.3 Motor Control  
The 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  
CR10X will automatically command the appropriate relay to energize the  
motor starter. The relay in the CD16AC will remain latched until the CR10X  
program commands that the motor be turned off, at which time the relay will  
open the circuit to the motor starter and the motor will stop.  
The CD16AC can be used to control three phase pump motors, air blowers,  
and large control valves in the same fashion.  
6
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SDM-CD16AC 16 Channel AC/DC Controller  
FIGURE 5. CD16AC Relay Outputs to MCC  
5. 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 6).  
Switch A  
0
1
2
3
Switch B  
0
1
2
3
00  
10  
20  
30  
01  
11  
21  
31  
02  
12  
22  
32  
03  
13  
23  
33  
Base 4 Address Matrix  
(00, 01, 02 . . . 32, 33)  
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SDM-CD16AC 16 Channel AC/DC Controller  
3
3
2
1
0
0
2
1
FIGURE 6. Addressing  
6. Datalogger Programming  
In CRBasic, the SDMCD16AC instruction is used to control the SDM-  
CD16AC. Dataloggers that are programmed with CRBasic include our  
CR800, CR850, CR1000, CR3000, and CR5000.  
Edlog Instruction 104 is used by the CR23, 21X, and CR10(X) to control the  
SDM-CD16AC, and Edlog Instruction 29 is used by the CR7. SDM-CD16AC  
outputs that are to be controlled by the datalogger must have the toggle switch  
in the AUTO position.  
6.1 CRBasic Programming  
SDMCD16AC  
Syntax  
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.  
The SDMCD16AC instruction has the following parameters:  
Source: The Source parameter is an array which holds the values that will be  
sent to the SDM-CD16AC to enable/disable its ports. An SDM-CD16AC has  
16 ports; therefore, the source array must be dimensioned to 16 times the  
number of Repetitions (the number of SDM-CD16AC devices to be  
controlled). As an example, with the array CDCtrl(32), the value held in  
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SDM-CD16AC 16 Channel AC/DC Controller  
CDCtrl(1) will be sent to port 1, the value held in CDCtrl(2) will be sent to  
port 2, etc. The value held in CDCtrl(32) would be sent to port 16 on the  
second SDM-CD16AC.  
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. Valid SDM addresses  
are 0 through 14. Address 15 is reserved for the SDMTrigger instruction. If the  
Reps parameter is greater than 1, the datalogger will increment the SDM  
address for each subsequent device that it communicates with.  
CRBasic dataloggers use base 10 when addressing SDM devices.  
Edlog programmed dataloggers (e.g., CR10X, CR23X) used  
base 4 for addressing (see Table 2).  
NOTE  
TABLE 2. Base 10 to Base 4 Reference Chart  
Base 10  
Base 4  
Base 10  
Base 4  
0
1
2
3
4
5
6
7
0
8
20  
1
9
21  
2
10  
11  
12  
13  
14  
15  
22  
3
23  
10  
11  
12  
13  
30  
31  
32  
33 (reserved)  
6.2 Edlog Programming  
Instruction 104SDM-CD16AC use with CR23X, CR10(X), and 21X  
Param. Type Description  
1
2
3
2
2
4
Reps (# of modules sequentially addressed)  
Starting Address (base 4: 00..33)  
Starting Input Location  
Execution Time = 2 ms per Rep for the CR10X, 3.5 ms per Rep for the 21X  
Instruction 29 - SDM-CD16AC use with CR7  
Param Type Description  
1
2
3
4
5
2
2
2
2
4
Reps (# of modules sequentially addressed)  
Device (2 = SDM-CD16AC)  
Starting Address (base 4: 00..33)  
Card (Excitation card #)  
Starting Input Location  
Execution Time = 150 to 190 ms per Rep  
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SDM-CD16AC 16 Channel AC/DC Controller  
The number of SDM-CD16ACs to be addressed is defined by the Reps  
(repetitions) parameter. Each Rep will sequentially address (00, 01, 02,...32,  
33) SDM-CD16ACs starting with the address specified in parameter 2  
(Instruction 29 parameter 3).  
For each Rep, the 16 ports of the addressed SDM-CD16AC are set according  
to 16 sequential Input Locations starting at the Input Location specified in  
parameter 3 (Instruction 29 parameter 5). Any non-zero value stored in an  
input location activates the associated SDM-CD16AC port. A value of zero  
(0) deactivates the port For example, assuming 2 Reps and a starting Input  
Location of 33, OUTPUT 1 through 16 of the first SDM-CD16AC are set  
according to Input Locations 33 through 48, and OUTPUT 1 through 16 of the  
second SDM-CD16AC are set according to Input Locations 49 through 64.  
For Instruction 29, the Device (parameter 2) specifies what type of  
synchronously addressed peripheral is to be addressed. The Device code for  
an SDM-CD16AC is 2.  
For Instruction 29 only (CR7), the Card parameter 4 specifies which 725  
Excitation Card is being used for the Control Port signals. The Reps parameter  
does not advance beyond the specified Card, requiring another Instruction 29  
for each 725 Excitation Card used.  
7. Theory of Operation  
The SDM-CD16AC is a synchronously addressed peripheral. C2 and C3,  
driven high by the datalogger, initiate a cycle. While holding C3 high, the  
datalogger drives C2 as a clock line and C1 as a serial data line. The  
datalogger shifts out a data bit on 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.  
If enabled, the next 16 bits are shifted into the SDM-CD16AC, each bit  
controlling one port, the first of which controls OUTPUT1.  
When the 16 control bits are clocked in, C2 is held high while C3 is pulsed low  
then high to latch the control bits. The datalogger then lowers both C3 and C2  
to complete the cycle.  
8. Program Examples  
8.1 CRBasic Example  
In the following CR1000 program example, a counter is used to fill an array  
called Src( ) that will control two SDM-CD16ACs.  
10  
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SDM-CD16AC 16 Channel AC/DC Controller  
'Dimension Variables  
Public src(32)  
Dim i, count, mask(16)  
'Program  
BeginProg  
for i=1 to 16  
mask(i) = 2^(i-1)  
next i  
Scan(20,msec,2,0)  
count = count + 1  
for i=1 to 32  
src(i) = count AND mask(((i-1) MOD 16) +1)  
next i  
SDMCD16AC(src(),2,1)  
NextScan  
EndProg  
8.2 Edlog Example  
The example is written for the CR10(X) Measurement and Control Module.  
The program concepts presented are the same for the CR23X, 21X, and CR7  
dataloggers with minor program code changes.  
In this example, the SDM-CD16AC is used to control the temperature between  
23° and 28°C in each of 5 greenhouses. In each green house the SDM-  
CD16AC 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  
temperature < 24.5°C  
Mixing fan: Activate whenever the heating or cooling units are activated.  
Activate for 5 minutes out of every 15 minutes.  
The program assumes the temperature measurements have been made, and the  
average temperature for each greenhouse is computed and residing in Input  
Locations 1 through 5.  
11  
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SDM-CD16AC 16 Channel AC/DC Controller  
Input Location assignments are as follows:  
Input  
Location  
Location Label  
Description  
1..5  
Temp #1..#5 Avg temp, greenhouse 1..5  
10..14  
Heat #1..#5  
Cool #1..#5  
Fan #1..#5  
Heater control, greenhouse 1..5 SDM-CD16AC  
Port 1..5  
15..19  
20..24  
Cooler control, greenhouse 1..5 SDM-CD16AC  
Port 6..10  
Fan control, greenhouse 1..5 SDM-CD16AC  
Port 11..15  
1: Beginning of Loop (P87)  
Master Loop, End  
Loop at Step 30  
1:  
2:  
0
5
Delay  
Loop Count  
START HEATER CONTROL LOGIC  
2: If X<=>F (P89)  
If "Heater On"  
threshold is  
exceeded  
1: 1--  
2:  
X Loc  
<
4
3: 23.5  
4: 30  
F
Then Do  
Then  
3: Z=F (P30)  
Put a "1" into Heater  
Control Location  
1:  
2:  
1
0
F
Exponent of 10  
Z Loc :  
3: 10--  
4: End (P95)  
End Then Do/End  
5: If X<=>F (P89)  
1: 10--  
If Heater  
#1 on (Heater Control  
Location <> 0)  
X Loc  
<>  
F
2:  
3:  
2
0
4: 30  
Then Do  
Then  
6: If X<=>F (P89)  
1: 1--  
X Loc  
>=  
F
Temp #1 Check Upper Threshold  
to see if heater should  
be turned off  
2:  
3
3: 25.5  
4: 30  
Then Do  
7: Z=F (P30)  
If heater should be turned  
off, enter a "0" into  
heater control location  
1:  
2:  
0
0
F
Exponent of 10  
Z Loc :  
3: 10--  
8: End (P95)  
Else Then Do/End  
12  
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SDM-CD16AC 16 Channel AC/DC Controller  
9: Else (P94)  
10: Z=F (P30)  
Else, If the heater is off,  
1:  
2:  
0
0
F
Enter a "0" into heater  
control location  
Exponent of 10  
Z Loc :  
3: 10--  
11: End (P95)  
End Then Do/Else/End  
END HEATER CONTROL LOGIC  
START COOLER CONTROL LOGIC  
12: If X<=>F (P89)  
If "Cooler" on  
threshold is  
exceeded  
1: 1--  
2:  
X Loc  
>=  
3
3: 27.5  
4: 30  
F
Then Do  
Then  
13: Z=F (P30)  
Put a "1" into cooler  
Control Location  
1:  
2:  
1
0
F
Exponent of 10  
Z Loc :  
3: 15--  
14: End (P95)  
End Then Do/End  
15: If X<=>F (P89)  
1: 15--  
If cooler is on  
(Cooler control  
Location <>0)  
X Loc  
<>  
2:  
3:  
2
0
F
4: 30  
Then Do  
Then  
16: If X<=>F (P89)  
1: 1--  
Check lower threshold to  
see if cooler should be  
turned off  
X Loc  
2:  
4
<
3: 24.5  
4: 30  
F
Then Do  
17: Z=F (P30)  
If cooler should be turned  
off, put a "0" into cooler  
control location  
1:  
2:  
0
0
F
Exponent of 10  
Z Loc :  
3: 15--  
18: End (P95)  
19: Else (P94)  
20: Z=F (P30)  
End Then Do/End  
Else if cooler is off  
1:  
2:  
0
0
F
Put a "0" into cooler  
control location  
Exponent of 10  
Z Loc :  
0: 15--  
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SDM-CD16AC 16 Channel AC/DC Controller  
21: End (P95)  
End Then Do/Else/End  
END COOLER CONTROL LOGIC  
START FAN CONTROL LOGIC BASED ON HEATER/COOLER  
22: If X<=>F (P89)  
1: 10--  
If heater is on  
X Loc  
2:  
3:  
2
0
<>  
F
4: 11  
Set high Flag 1  
Set flag 1  
23: If X<=>F (P89)  
1: 15--  
If cooler is on  
X Loc  
2:  
3:  
2
0
<>  
F
4: 11  
Set high Flag 1  
Set flag 1  
If flag 1 is set  
Then  
24: If Flag/Port (P91)  
1: 11  
2: 30  
Do if flag 1 is high  
Then Do  
25: Z=F (P30)  
Put a "1" into fan  
control location  
1:  
2:  
1
0
F
Exponent of 10  
Z Loc:  
3: 20--  
26: Else (P94)  
Else, If flag 1 is reset  
27: Z=F (P30)  
Put a "0" into fan  
control location  
1:  
2:  
0
0
F
Exponent of 10  
Z Loc :  
3: 20--  
28: End (P95)  
End Then Do/Else/End  
Reset flag 1  
29: Do (P86)  
1: 21  
Set low Flag 1  
30: End Loop (P95)  
End Master Loop  
END FAN CONTROL LOGIC BASED ON HEATER/COOLER  
START FAN CONTROL LOGIC BASED ON TIME  
31: If time is (P92)  
1: 10  
2: 15  
If 5 minutes remain  
out of 15 minute  
interval,  
minutes into a  
minute interval  
Set high Flag 2  
3: 12  
set flag 2  
14  
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SDM-CD16AC 16 Channel AC/DC Controller  
32: If Flag/Port (P91)  
If flag 2 is set  
Then  
1: 12  
2: 30  
Do if flag 2 is high  
Then Do  
33: Beginning of Loop (P87)  
Start fan loop  
1:  
2:  
0
5
Delay  
Loop Count  
34: Z=F (P30)  
PUT A "1" INTO FAN  
CONTROL LOCATION  
1:  
2:  
1
0
F
Exponent of 10  
Z Loc :  
3: 20--  
35: End (P95)  
36: End (P95)  
37: If time is (P92)  
End fan loop  
End then do  
1:  
2: 15  
3: 22  
0
minutes into a  
minute interval  
Set low Flag 2  
Reset flag 2 at the  
end of the 15 minute  
END FAN CONTROL LOGIC BASED ON TIME  
INPUT LOCATIONS 10 THROUGH 24 ARE NOW LOADED WITH "1" OR "0" TO SET  
PORTS ON THE SDM-CD16AC.  
38: SDM-CD16AC (P104)  
Send instructions to the  
1:  
1
Reps  
SDM-CD16AC with address 00  
2: 00  
3: 10  
Address  
Loc  
39: End Table 1 (P)  
15  
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SDM-CD16AC 16 Channel AC/DC Controller  
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16  
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Campbell Scientific Companies  
Campbell Scientific, Inc. (CSI)  
815 West 1800 North  
Logan, Utah 84321  
UNITED STATES  
Campbell Scientific Africa Pty. Ltd. (CSAf)  
PO Box 2450  
Somerset West 7129  
SOUTH AFRICA  
Campbell Scientific Australia Pty. Ltd. (CSA)  
PO Box 444  
Thuringowa Central  
QLD 4812 AUSTRALIA  
Campbell Scientific do Brazil Ltda. (CSB)  
Rua Luisa Crapsi Orsi, 15 Butantã  
CEP: 005543-000 São Paulo SP BRAZIL  
Campbell Scientific Canada Corp. (CSC)  
11564 - 149th Street NW  
Edmonton, Alberta T5M 1W7  
CANADA  
Campbell Scientific Ltd. (CSL)  
Campbell Park  
80 Hathern Road  
Shepshed, Loughborough LE12 9GX  
UNITED KINGDOM  
Campbell Scientific Ltd. (France)  
Miniparc du Verger - Bat. H  
1, rue de Terre Neuve - Les Ulis  
91967 COURTABOEUF CEDEX  
FRANCE  
Campbell Scientific Spain, S. L.  
Psg. Font 14, local 8  
08013 Barcelona  
SPAIN  
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