Murphy MDM45 Dimensions, Open Transmitter Input, Typical Wiring Diagrams, How to Order, Warranty

Dimensions
4-3/4 in.	4-1/4 in.
(121 mm)	(108 mm)
5-1/2 in.	4 in.
(140 mm)	(102 mm)

Mounting Hole	4-3/4 in.
	(121 mm)
Dimensions

120

120

1/4 in.

(6 mm)

diameter

3 holes

Open Transmitter Input

An open transmitter input causes the SWICHGAGE® to go negative, triggering the low trip point if the trip point is being used.

Typical Wiring Diagrams

Common Transmitter Power Source

			4-20 mA
			Signal
12/24 VDC	12/24
	NEG
	NC		Transmitter Input
L	TP1		terminal block
			L =LOAD
L	TP2
		MDM45
			NOTE: Loads must
		Back view
			not exceed 0.5 AMP

@ 250 VDC.

All grounds (-) must be common.

Separate Transmitter Power Source

2-39/64 in.

(66 mm)

radius

How to Order

To order specify trip point output and unit of measure- ment. Example MDM45-B.

MDM45 - ___

	Low contact	High contact
(decreasing value)		(increasing value)
A*	closes	closes
B	opens	closes

12/24 VDC

L

L

12/24
NEG
NC
TP1
TP2	MDM45
	Back view

4-20 mA Signal

Transmitter Input terminal block

L=LOAD

NOTE: Loads must not exceed 0.5 AMP @ 250 VDC.

All grounds (-) must be common.

C	closes	opens
D	opens	opens

*Standard configuration

Note: The MDM45 is for use with Electromechanical TATTLETALE® annunciators or

SELECTRONIC® or similar solid state annunciators.

MDM45 Interface Capabilities

Model	Power Source	Rating
LCDT	CD Ign., 120 VAC, 12/24 VDC	Cl.I, Div.1, Gr. D, Haz. areas*
S1400	120 VAC or 12/24 VDC	Cl.I, Div.1, Gr. D, Haz. areas*
MARK II	CD Ignition, pos. or neg. grnd	Cl.I, Div.2, Gr. D, Haz. areas**
TATTLETALE®	CD Ign., 120 VAC, 12/24 VDC	Non-Hazardous areas

PLC’s, various non-Murphy annunciators–contact factory.

Warranty

A two year limited warranty on materials and workmanship is given with this Murphy product. Details are available on request and are packed with each unit.

*An isolation barrier is needed between the MDM45 and an Annunciator rated for Class I, Division 1, Group D, Hazardous Areas.

**When used with approved ignition. Contact Murphy for details.

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

FRANK W. ®

Since 1939 MFR.

■Frank W. Murphy Manufacturer

P.O. Box 470248; Tulsa, Oklahoma 74147; USA tel. (918) 627-3550 fax (918) 664-6146 e-mailsales@fwmurphy.com

■Frank W. Murphy Southern Division

P.O. Box 1819; Rosenberg, Texas 77471; USA tel. (281) 342-0297 fax (281) 341-6006 e-mailmurphysd@intertex.net

Printed in U.S.A.

■Frank W. Murphy, Ltd.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.

tel. +44 1722 410055 fax +44 1722 410088 tlx 477088 e-mailsales@fwmurphy.co.uk

■Frank W. Murphy Pte., Ltd.

No. 2 Tuas South Street 2, Sprintecs Bldg., #02-01/02 Singapore 638042

tel. +65 863-1398 fax +65 863-0208 e-mailfwmsales@fwmurphy.com.sg

■Murphek Pty., Ltd.

1620 Hume Highway; Campbellfield, Vic 3061; Australia tel. +61 3 9358-5555 fax +61 3 9358-5558

e-mailmurphy@macquarrie.com.au

■Murphy de México, S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje San Luis Potosí, S.L.P.; México 78384

tel. +52-48-206264 fax +52-48-206336 e-mailmurmexsl@sanluis.podernet.com.mx

■Murphy Switch of California

P.O. Box 900788; Palmdale, California 93590; USA tel. (805) 272-4700 fax (805) 947-7570 e-mailsales@murphyswitch.com

■Frank W. Murphy France

tel. +33 1 30 762626 fax +33 1 30 763989

0791156