Sensoray 7409TB Owner's manual

Sensoray Model 7409TB/7409TF

Termination Boards

01/10/2000

INSTRUCTION MANUAL

Sensoray Co., Inc.

7313 SW Tech Center Dr., Tigard, Oregon 97223

voice: 503.684.8005, fax: 503.684.8164, e-mail: [email protected]

www.sensoray.com

M A N U A L 7 4 0 9 T B / 7 4 0 9 T F

Sensoray models 7409TB and 7409TF (both referenced simply

as “TB” unless otherwise specified) are robust, small footprint

termination boards that break out flat cable conductors to

screw terminals. A 40-pin header on the back side of the board

facilitates panel mounting and supports direct connection to

any of the following Sensoray products:

q All Smart A/D™ boards.

q Multi-function interface cards that utilize a 40-pin analog

I/O connector, including models 421, 425 and 7421.

q Analog output interface cards that have a 40-pin analog

I/O connector, such as model 7405.

Both TB models include an integral temperature transducer.

When used with Sensoray Smart A/D™ boards, this sensor is

connected to a dedicated measurement channel that is used for

thermocouple reference junction compensation. No wiring or

configuration of this sensor is necessary; it is hard-wired to the

Smart A/D™ dedicated measurement channel.

Model 7409TF also includes programming shunts for enabling

Open Sensor Detection (OSD) when used with Sensoray Smart

A/D™ boards.

Fig. 1 — Block Diagram

7409TF Configuration Shunts

On model 7409TF only, programming shunts are provided to

independently enable the OSD option for each Smart A/D™

channel. The option shunts are located as shown in the

following diagram:

Fig. 2 — Open Sensor Detection (OSD) programming shunts

Some Smart A/D™ products have built-in OSD option shunts.

Do not install any OSD option shunts on the TB if your Smart

A/D™ has built-in OSD option shunts; instead, install OSD

shunts only on the Smart A/D™. As for which channels should

have OSD enabled, refer to your Smart A/D™ instruction

manual for the recommended practice.

Field Wiring

Field wires need only be stripped of insulation, inserted into

the terminal receptacles, and the screw tightened for a secure

connection. The following sections discuss field wiring

specifics for the various types of supported interface boards.

Smart A/D™ Connections

8- and 16-channel cards—Five screw terminals are provided

for each channel: two for voltage sense (V+, V-), two for

sensor excitation (I+, I-) and one for shield (S).

32-channel thermocouple cards—Two screw terminals are

provided for voltage sense on each channel: either (V+, V-) or

(I+, I-). In addition, one shared shield (S) terminal is

provided for every two channels.

Two TB boards are required for each 16- or 32-channel Smart

A/D™ interface card. Connect all sensors as described in your

Smart A/D™ documentation.

Multi-Function I/O Card Connections

Two screw terminals are provided for voltage sense on each

analog input channel (V+, V-) and two for each analog output

channel (I+, I-). One shared shield (S) terminal is provided

for each pair of analog input/output channels.

Analog Output Card Connections

Five screw terminals are provided for each channel: Two for

voltage output (V+, V-), two for current output (I+, I-) and

one for shield (S).

Calibration

TB boards may be freely interchanged because their onboard

temperature sensors are calibrated. Although the sensor is

factory calibrated, it may be necessary to recalibrate it after

extended time in service or due to exposure to extraordinary

environmental stress.

Calibration Procedure

1. Connect a calibrated Smart A/D™ to the TB. Connect a

calibrated thermocouple to the TB and immerse the “hot”

end into a precise, thermally controlled environment.

Allow at least ten minutes after power-up for the system to

warm up and stabilize.

2. On the TB, adjust potiometer R4, reset and re-initialize the

Smart A/D™ and read the thermocouple data.

3. Repeat step 2 until the Smart A/D™ indicates the correct

thermocouple temperature.

Temperature

Transducer

40-Pin Header

to I/O Interface Board

Screw Terminal

OSD Programming

Shunts (7409TF only)

Blocks

Sensor

Field

Wiring

Important note for thermocouple users:

Exposing the TB to thermal transients can severely

degrade thermocouple measurement accuracy. If you

are measuring thermocouples, insulate the TB from air

flows such as ambient drafts and cooling fans. For

best results, encase the TB in a protective enclosure.

Models 7409TB/7409TF Instructions

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

7409TB.DSN A

TERMINATION BOARD, MODEL 7409TB

SENSORAY COMPANY, INCORPORATED

1 1

21:23:04

Title

Size Document Number Rev

Date: Sheet of

PL0PL0

PH0

SH0

SL0

PL1PL1

PH1

SH1

SL1

PL2PL2

PH2

SH2

SL2

PL3PL3

PH3

SH3

SL3

PL4PL4

PH4

SH4

SL4

PL5PL5

PH5

SH5

SL5

PL6PL6

PH6

SH6

SL6

PL7PL7

PH7

SH7

SL7

SL4

SL1

SL0

SH3

PH1

SL6

PL2

PH6

PH2

SL2

PL3

PH3

SH4

SH1

PL1

PH7

PH4

PL4

SL7

SL5

PL6

PL0

SH6

SH5

SH0

PL7

SL3

PH0

SH7

PH5

PL5

SH2

10K

3.9K

3.3K

12K

I+

I-

V+

V-

V+

I+

V-

I-

V+

I+

V-

I-

V+

I+

V-

I-

TB1

LM335

I+

I-

V+

V-

V+

I+

V-

I-

V+

I+

V-

I-

V+

I+

V-

I-

TB2

P501

SH0

SH1

SH2

SH3

SH4

SH5

SH6

SH7

SL0

SL1

SL2

SL3

SL4

SL5

SL6

SL7

PH0

PH1

PH2

PH3

PH4

PH5

PH6

PH7

PL0

PL1

PL2

PL3

PL4

PL5

PL6

PL7

+12V

TREF

GND

SHLD

1K-POT

1 3

PWB

PWB7409TB

RevA

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

0500095 rev A A

TERMINATION BOARD, MODEL 7409TF