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RETURN REQUESTS / INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED
RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return
package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.
This affords our customers the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 1996 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied,
photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, i n
w h o l e   o r   i n   p a r t ,   w i t h o u t   p r i o r   w r i t t e n   c o n s e n t   o f   O M E G A   E N G I N E E R I N G ,   I N C .

FOR 

WARRANTY

 RETURNS, please have the

following information available BEFORE contacting
OMEGA:
1. P.O. number under which the product was
    PURCHASED,
2. Model and serial number of the product under
    warranty, and
3. Repair instructions and/or specific problems
    relative to the product.

FOR 

NON-WARRANTY

 REPAIRS, consult

OMEGA for current repair charges. Have the
following information available BEFORE
contacting OMEGA:
1. P.O. number to cover the COST
    of the repair,
2. Model and serial number of product, and
3. Repair instructions and/or specific
    problems relative to the product.

 WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship
for a period of 

13 months

 from date of purchase. OMEGA Warranty adds an additional one (1) month

grace period to the normal 

one (1) year product warranty

 to cover handling and shipping time. This

ensures that OMEGA’s customers receive maximum coverage on each product. If the unit should malfunction,
it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized
Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is
found to be defective it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects
resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing,
operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if
the unit shows evidence of having been tampered with or shows evidence of being damaged as a result
of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse
or other operating conditions outside of OMEGA’s control. Components which wear are not warranted, including
but not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes
liability for any damages that result from the use of its products in accordance
with information provided by OMEGA, either verbal or written. OMEGA warrants
only that the parts manufactured by it will be as specified and free of defects.
OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND
WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL
IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION
OF LIABILITY: The remedies of purchaser set forth herein are exclusive and the
total liability of OMEGA with respect to this order, whether based on contract,
warranty, negligence, indemnification, strict liability or otherwise, shall not exceed
the purchase price of the component upon which liability is based. In no event
shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS:  Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity,
medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth
in our basic WARRANTY / DISCLAIMER language, and additionally, purchaser will indemnify OMEGA and
hold OMEGA harmless from any liability or d a m a g e   w h a t s o e v e r   a r i s i n g   o u t   o f   t h e   u s e   o f   t h e
P r o d u c t ( s )   i n   s u c h   a   m a n n e r.

Summary of Contents for DRA-CSM-1

Page 1: ...DRA CSM 1 CURRENT MULTIPLEXER User sGuide http www omega com e mail info omega com ...

Page 2: ...any omega com United Kingdom 25 Swannington Road P O Box 7 Omega Drive ISO 9002 Certified Broughton Astley Leicestershire Irlam Manchester LE9 6TU England M44 5EX England Tel 44 1455 285520 Tel 44 161 777 6611 FAX 44 1455 283912 FAX 44 161 777 6622 Toll Free in England 0800 488 488 e mail uk omega com omega comTM OMEGA It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regul...

Page 3: ...TAGE 6 CONNECTING TRANSMITTERS TO THE MULTIPLEXER 6 1 Two Wire Transmitter 6 2 Three Wire Transmitter 6 3 Four Wire Transmitter 7 CONTROL 7 1 Enable Test 7 2 Address 7 3 Address Polarity 7 4 Control Tables 7 4 1 True Low Setting 7 4 2 True High Setting 8 MULTI DROP CONFIGURATION 9 SPECIFICATIONS 1 ...

Page 4: ...put module The unit provides 16 current limited 40mA voltage supply V outputs These outputs are derived from the mux s power supply input and are used to feed two wire transmitters The current limitation avoids fuse blowing in cases of short circuit of the transmitters leads The DRA CSM 1 is designed for standard DIN rail mounting Place the unit on the upper part of the mounting rail with the fast...

Page 5: ...voltage required to operate the multiplexer and the transmitters fed by it can be calculated using the following equation Vmin Vt 0 02 Rs 350 3 The DRA CSM 1 unit includes three printed circuit cards designated as P N 7016 P N 7017 and P N 7030 The printed circuit cards should occupy the slots in the enclosure according to fig1 c Disconnect the flat connectors from the front panel d Replace the bl...

Page 6: ...TING THE TRANSMITTERS TO THE MULTIPLEXER 6 1 TWO WIRE TRANSMITTER A Two Wire transmitter is connected so that its positive terminal is connected to the V terminal and its negative terminal is connected to the I terminal see fig 2 Figure 2 6 2 THREE WIRE TRANSMITTER A Three Wire transmitter is connected so that its positive terminal V is connected to the multiplexer V terminal its negative terminal...

Page 7: ...utput module can be used see fig 5 5 Figure 5 7 1 ENABLE TEST The unit is enabled when E T is in logical 0 low state In a disabled state the DRA CSM 1 outputs no current and reflects a Hi Z state The disabled state of the DRA CSM 1 multiplexer is used to check the functioning of all the current inputs This is performed by simultaneously injecting current pulses to all 16 channels which cause the f...

Page 8: ...Low Setting 7 4 2 True High Setting ADDRESS BUS E T OUTPUT CHANNEL A0 A1 A2 A3 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 1 0 1 0 0 0 0 0 0 9 10 11 12 13 1 1 1 x 1 1 1 x 0 1 1 x 1 0 1 x 0 0 0 1 14 15 16 TEST MODE ADDRESS BUS E T OUTPUT CHANNEL A0 A1 A2 A3 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 1 0 1 0 0 0 0 0 0 1 2 3 4 5 0 0 0 x 1 1 1 x 0 1 1 x 1 0 1 x 0 0 0 1 6 7 8 TEST MODE Figure 6 ADDRESS BUS E T OUTPUT CHANNEL...

Page 9: ...nnection of several DRA CSM 1 units to one PLC s analog input by tying their output terminals and the address lines in parallel and applying individual Enable lines to select the desired multiplexer by disabling all but one see fig 7 Figure 7 ENABLE 1 MSB LSB ENABLE 2 DISCRETE OUTPUT MODULE ANALOG INPUT MODULE PLC ANALOG ANALOG POWER SUPPLY ...

Page 10: ...N 40050 0 75 Kg 1 5 lb 73Hx200Wx121mmD 2 88 x7 88 x4 76 INPUTS ANALOG INPUTS Reverse Polarity Protected Max Input Current CONTROL INPUTS Logic Levels Logic Polarity OUTPUTS CURRENT OUTPUT Switching time Accuracy Refer to Current Input V TERMINALS V Voltage Limitation Current Automatic Temperature Shut down INDICATORS 16 0 4 20mA Current loop 30mA 4 Address inputs E T Enable Test input Low 0 0 4V H...

Page 11: ...MEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or show...

Page 12: ... Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipment DATA ACQUISITION Data Acquisition Engineering Software Communications Based Acquisition Systems Plug in Cards for Apple IBM Compatibles Datalogging Systems Recorders Printers Plotters HEATERS Hea...

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