SDM-CD16AC 16 CHANNEL AC/DC CONTROLLER REVISION: 5/00 COPYRIGHT (c) 1987-2000 CAMPBELL SCIENTIFIC, INC.
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Warranty and Assistance The SDM-CD16AC 16 CHANNEL AC/DC CONTROLLER is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.
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SDM-CD16AC 16 Channel AC/DC Controller Table of Contents 1. Function...................................................................... 1 2. Control Specifications ............................................... 2 3. Power Considerations ............................................... 2 4. Installation .................................................................. 4 4.1 Wiring ...................................................................................................... 5 5.
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AUTO OFF ON 1 C2 16 C2 16 C2 : S/N 16 C2 C2 C2 D GN 2V +1 16 C2 C2 C2 AU 16 F OF ON TO 5 16 1 16 C2 C2 14 C2 16 C2 13 C2 C2 12 C2 C2 C2 11 16 C2 C2 10 C2 16 C2 9 C2 C2 16 C2 8 C2 C2 7 16 C2 C2 C2 16 6 C2 C2 5 C2 C2 4 C2 C2 3 C2 16 C2 C2 2 C2 16 C2 C2 16 SDM-CD16AC 16 Channel AC/DC Controller C2 C1 C2 C2 C2 C3 C2 16 C2 C2 C NEL AC/D A S6 1 C D AN 1 2 3 0 16 IN DE MA A US CH T RN IPM D QU TE L E LISTRO N CO Z21 L 5 IA
SDM-CD16AC 16 Channel AC/DC Controller 2. Control Specifications Compatible dataloggers: CR10, 21X, CR7. 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 (CR10, 21X), 600 ft (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.
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 C1 DATALOGGER C2 C3 Connection With External Supply SDM-CD16AC GND 12 V C1 C2 C3 DATALOGGER Connection with Datalogger Supply FIGURE 3.
SDM-CD16AC 16 Channel AC/DC Controller TABLE 1. Datalogger to SDM-CD16AC Connections Connection Order First Second SDM-CD16AC 12 V Gnd C1 C2 C3 Datalogger 12 V on datalogger or external supply Gnd C1 (Control Port 1) C2 (Control Port 2) C3 (Control Port 3) Function Power Common ground Data Clock Enable 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.
SDM-CD16AC 16 Channel AC/DC Controller 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.
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 0 00 01 02 03 1 10 11 12 13 2 20 21 22 23 32 33 Switch B 3 6 30 31 Base 4 Address Matrix (00, 01, 02 . . .
SDM-CD16AC 16 Channel AC/DC Controller 1 A 2 3 0 B 1 AD S E R D 2 3 0 FIGURE 6. Addressing 6. Datalogger Instruction—104 (21X, CR10) 29 (CR7) Instruction 104 is used by the 21X and CR10 to control the SDM-CD16AC, and Instruction 29 is used by the CR7. The Instruction description is given below. SDM-CD16AC outputs that are to be controlled by the datalogger must have the toggle switch in the AUTO position. Instruction 104 SDM-CD16AC use with CR10 and 21X Param.
SDM-CD16AC 16 Channel AC/DC Controller 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.
SDM-CD16AC 16 Channel AC/DC Controller 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. 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..
SDM-CD16AC 16 Channel AC/DC Controller 07: Z=F (P30) 01: 0 02: 0 03: 10-- F Exponent of 10 Z Loc : If heater should be turned off, enter a "0" into heater control location 08: End (P95) Else Then Do/End 09: Else (P94) Else, If the heater is off, 10: Z=F (P30) 01: 0 02: 0 03: 10-- F Exponent of 10 Z Loc : 11: End (P95) Enter a "0" into heater control location End Then Do/Else/End END HEATER CONTROL LOGIC START COOLER CONTROL LOGIC 12: If X<=>F (P89) 01: 1-02: 3 03: 27.
SDM-CD16AC 16 Channel AC/DC Controller 20: Z=F (P30) 01: 0 02: 0 03: 15-- F Exponent of 10 Z Loc : 21: End (P95) Put a "0" into cooler control location End Then Do/Else/End END COOLER CONTROL LOGIC START FAN CONTROL LOGIC BASED ON HEATER/COOLER 22: If X<=>F (P89) 01: 10-02: 2 03: 0 04: 11 X Loc <> F Set high Flag 1 If heater is on 23: If X<=>F (P89) 01: 15-02: 2 03: 0 04: 11 X Loc <> F Set high Flag 1 24: If Flag/Port (P91) 01: 11 02: 30 Do if flag 1 is high Then Do 25: Z=F (P30) 01: 1 02: 0 03
SDM-CD16AC 16 Channel AC/DC Controller 32: If Flag/Port (P91) 01: 12 02: 30 If flag 2 is set Do if flag 2 is high Then Do Then 33: Beginning of Loop (P87) 01: 0 Delay 02: 5 Loop Count Start fan loop 34: Z=F (P30) 01: 1 02: 0 03: 20-- PUT A "1" INTO FAN CONTROL LOCATION F Exponent of 10 Z Loc : 35: End (P95) End fan loop 36: End (P95) End then do 37: If time is (P92) 01: 0 02: 15 03: 22 minutes into a minute interval Set low Flag 2 Reset flag 2 at the end of the 15 minute END FAN CONTROL LOGI
