Campbell SDM-CD16 Manuel utilisateur

6 Control Port

\-{

Ie with Drivers

Campbell Scientific, Inc

SDM-CDI6 CONTROL PORT

EXPANSION MODULE WITH DRIVERS

INSTRUCTION MANUAL

REV|SION: 1/92

WAR RANTY AND ASSISTANCE

The SDM-CD16 Control Pod Expansion Module with Drivers is warranted by CSlto be free from defects in

materials and workmanship under normal use and service for twelve (12) months from date of shipment unless

specified otherwise. Baneries have no warranty. csl's obligation under this warranty is limited to repairing or

replacing (at CSI's option) defective products. The customer shall assume all costs of removing, reinstalling,

and shipping defective products to CSl. CSI will return such products by sudace carrier prepaid. This warranty

shall not apply to any CSI products which have been subjected to modification, misuse, neglect, accidents of

nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied, including

warranties of merchantability or fitness for a particular purpose. CSI is not liable for special, indirect, incidenta',

or consequential damages.

Products may not be returned without prior authorization. To obtain a Returned Materials Authorization (RMA),

contact CAMPBELL SCIENTIFIC, lNC., phone (801) 753-2342. Atler an application engineer determines the

nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the

shipping container. Campbell Scientific's shipping address is:

CamPbell Scientific, Inc.

RMA #_

815 West 1800 North

Logan, Utah 84321

CAMPBELL SCIENTIFIC, lNC. does not accept collect calls.

Non-warranty products returned for repair should be accompanied by a purchase order to cover the repair.

eAMPEIELL SGIENTIFIC, INC'

P.O. Box 551

Logan, UT 84321

Phone (801) 753-2342

TLX 453058

FAX 801-752-3268

9525 41st Avenue

Edmonton, Alberta T6E 5X7

CANADA

Phone {403) 461-5158

TLX 037-2966 (EDM)

FAX 403-450-2531

College Road/Sutton Bonington

Loughborough, LE12 5RA

ENGLAND

Phone 01 144509672516

TLX 94016393 (CAMP G)

FAX 01 1 44509674928

SDM-CDI6

TABLE OF CONTENTS

PAGE

WARRANTY

1. Function 1

2. Specifications........... 1

3. Power Considerations.'.............. 2

4. Connections............. 3

5. Address Selection Jumpers..... 3

6. Datalogger 1nstruction...............". 4

7. Theory of Operation 6

8. Program ExamPle...... 6

Figure 1. SDM-CD16 Face Pane1.......... 1

Figure 2. Application Block Diagram...... 2

Figure 3. Use of External Clamping Diodes For Inductive Loads With Different Supply Voltages 4

Figure 4. Address Jumper Position 5

SDM.CDI6 CONTROL PORT EXPANSION MODULE WITH DRIVERS

Figure 1. SDM-CD16 Face Panel

1. FUNCTION 2. SPECIFICATIONS

The SDM-CD'|6 has 16 digital control ports with Compatible dataloggers: CR10, 21X, CR7.

drivers and is compatible with CSI's CR10, 21X

and CR7 dataloggers (refer to Figure 1). Each Operating voltage: 12 VDC nominal (9 to 18).

pon can be controlled by a datalogger or

controlled manually with an override toggle Current drain at 12 VDC: 6 mA quiescent; 'l1 mA

switch. Each port can be thought of as a switch per active LED (switch on or auto active); 1.4 mA

to ground; closed when active, open when per active poft with switch off.

inactive. The primary function is to activate DC

powered external relays, solenoids, or resistive Maximum power per port from external relay,

loads under datalogger control. solenoid, resistive load: 40 VDC, 0.5 Amps.

The SDM-CD16 is a synchronously addressed Solid state FET protection: Thermalfuse

datalogger peripheral. Datalogger control ports increases in resistance at 1 Amp, allows no

1 , 2, and 3 are used to address the SDM-CD16 current flow after 2 Amps or 125 oC; clamping

then clock out the desired state of each of the '16 diode prevents inductive arcing.

control ports. Up to 16 SDM-CD'l6s may be

addressed, making it possible to control a Total length of connecting cable: 20 feet (CR10,

maximum of 256 ports from the first three 21X) 600 feet (CR7)

datalogger control ports. Toggle switch: ON/OFF manual override;AUTO

l/O Instruction 104 is used by the 21X and CR10 for datalogger control.

to controlthe SDM-CD'|6. The CR7 uses

lnstruction 29. Ensure that the datalogger Physical: 1.7'(H), 7"(L),42"W 1 lb.

contains the appropriate Instruction prior to

system deployment.

9929122999999?97

r-r{ nir rrir n* rrir nir nir rri ^g a\{ ^ii nir nir nir .\ii.)ii

\ri Ui \-ii \ri \ri lri \rt Ut l-l* Ut \r* \rt l/* \ri l/IU*

ct ct cE ot ct c: c= o= ct c= c= ot o= ct c= o=

O f,:TcAMPBELL

t€J scrENrFrc

SDM-CD1 6

CONTROL PORT EXPANSION WITH DRIVERS

OUTPUT

|||t

SDM-CD16 Control Pofi Expansion Module with Drivers

POWER CONSIDERATIONS

The SDM-CD16 power requirements are large

compared to most CSI products. For most

applications an external power supply, as shown

in Figure 2, is recommended to power the SDM-

cD16.

For some applications it may be convenient to

use the datalogger supply to power the SDM-

CD16. For long term applications the lead acid

power supply available with CSI dataloggers

should be used, allowing the batteries to be float

charged. lt is not recommended that the

datalogger alkaline supply be used to power the

SDM-CD16 for long term applications.

lf the datalogger lead acid supply is used, the

number of SDM-CD16's which 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-CD16 and 11 mA per

active LED, a maximum of 26 LEDs may be

current is drawn than can be sourced by the

charger. lf this condition is maintained, it will

ultimately lead to battery deep discharge,

requiring new bafteries.

lf the 21X power supply is used to power the

SDM-CD16, all low levelanalog

(thermocouples, pyranometers, thermopiles,

etc.) must be made differentially. This is a

of slight ground potentials created along the

analog terminal strip when the 12V supply is

to power peripherals. This limitation reduces

number of available analog input channels

may mandate an e).ternal supply for the SDM

cD16.

DATALO66ER

POVER

SUPPLY

FIGURE 2. Application Block Diagram

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