Impulse SCMD-PB4 User Manual download pdf

(0.75)

19.1

(2.2) 55.9

Swaged

Standoff

thru Hole

(0.15) 3.2

Diameter

WRC4-A4T & 1781-A4T

Discrete I/O Mounting Boards

Phone

(330) 762-

Fax:

(330) 762-

E-mai

SALES@

wrcakron.c

Webs

http://www

wrcakron.c

SSPECIFICATION

Power Side Signal Side

Bit

Pos. Neg. Signal DC Return

Bit 0 2 3 3 2

Bit 1 4 5 5 4

Bit 2 6 7 7 6

Bit 3 8 9 9 8

NOTES:

1. Signal-side +Vcc (terminal 1) supplies +5, +15 or +24 V dc logic voltage.

2. Logic-side dc return is connected to all even terminals on the signal side.

3. Signal terminal is pulled up to +Vcc when not asserted, and pulled down to dc return when asserted.

4. Power-side terminals are polarized for dc applications, and non-polarized for ac applications.

5. Power-side terminal 1 is not connected on 1781-A4T.

MM (in)

6.4

(.25)

101.6 (4.0)

114.3 (4.5)

76.2

(3.0)

88.9

(3.5)

Pull-up

Resistor

3.3K Typ

Spare

Power Side

Module Input/Output

Output

Barrier

Strip

Output

Barrier

Strip

LED typ.

Fuse

Typ.

Signal Side

Module Input/Output

Return

+VCC

101.6 (4.0)

6.4 (.25)

mm (in)

114.3 (4.5)

76.2 (3.0)

88.9 (3.5)

1781-A4T

1781-

A4T

WRC4-A4T and 1781-A4T mounting boards can be used with up to four WRC4-series

I/O modules (WRC4-A4T) or four standard, slim or miniature I/O modules (1781-

A4T). The barrier strips on the 1781-A4T accept ring or spade lug, while they both

accept insulated wire with stripped ends or ferrules. Each power side point is indi-

vidually isolated. The signal side has a common dc return and common logic supply

bus (+Vcc) for negative-true logic applications. They are designed for panel mount-

ing with four stand-offs. Specify 1782-A4T or WRC4-A4T-DIN for mounting on DIN

rails such as the WRC50022.

MOUNTING DIMENSIONS

SCHEMATIC DIAGRAMS

WRC4-

A4T

WRC4-A4T

SCMD-PB4

WRC4-A4T & 1781-A4T 1

Summary of Contents

Page 1 - WRC4-A4T & 1781-A4T

(0.75)19.1 (2.2) 55.9SwagedStandoffthru Hole(0.15) 3.2DiameterWRC4-A4T & 1781-A4TDiscrete I/O Mounting Boards1Phone(330) 762-Fax:(330) 762-E-maiSA

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Impulse SCMD-PB4 User Manual

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