Allen-Bradley 440K-MT55049, 440K-T11501 Installation Manual

Installation Instructions

Original Instructions

MT-GD2 Snap Acting Tongue Interlock Switches

Catalog Numbers

440K-M21ANDH, 440K-M21BNDH, 440K-M21BNDH-N5, 440K-M21MNDH-N5, 440K-M22ABDM, 440K-M22ABDT, 440K-M22AEDT,
440K-M22ANDL, 440K-M22ANDT, 440K-M22ASDM, 440K-M22ASDT, 440K-MT55002, 440K-MT55004, 440K-MT55005, 440K-MT55006, 440K-MT55022,
440K-MT55026, 440K-MT55029, 440K-MT55039, 440K-MT55041, 440K-MT55042, 440K-MT55045, 440K-MT55050, 440K-MT55051, 440K-MT55052,
440K-MT55062, 440K-MT55063, 440K-MT55065, 440K-MT55066, 440K-MT55070, 440K-MT55074, 440K-MT55075, 440K-MT55076, 440K-MT55077,
440K-MT55078, 440K-MT55079, 440K-MT55080, 440K-MT55081, 440K-MT55082, 440K-MT55083, 440K-MT55085, 440K-MT55086, 440K-MT55087,
440K-MT55088, 440K-MT55089, 440K-MT55091, 440K-MT55092, 440K-MT55095, 440K-MT55096, 440K-MT55097, 440K-MT55098, 440K-MT55099,
440K-MT55100, 440K-MT55101, 440K-MT55103, 440K-MT55104, 440K-MT55105

Summary of Changes

Converted multiple language pub to English only.

Installation

Installation of the MT-GD2 Snap Acting Tongue Interlock Switch must
be in accordance with the following steps and stated specifications and
implemented by suitably competent personnel. The unit is not to be
used as a mechanical stop. Guard stops and guides must be mounted.

Adherence to the recommended maintenance instructions forms part of
the warranty.

ATT EN TI ON : The presence of spare actuators can compromise the
integrity of the safety systems. Personal injury or death, property
damage, or economic loss can result. Appropriate management
controls, working procedures, and alternative protective measures
should be introduced to control their use and availability.

WARNING: Do not defeat, tamper, remove, or bypass this unit.
Severe injury to personnel could result.

Table 1 - Specifications

Attribute Value

Safety contacts 2 N.C. direct opening action

Thermal current 10 A

1 mA @ 24V DC for 1 million operations, min

Current

Rated insulation voltage Ui 2500V

Rated impulse withstand Uimp 2500V

Pollution degree 3

Fuse rating 2 A FF type super quick blow to EN 60127, max

Operating frequency 600 cycles/hr

Auxiliary contacts 2 N.O.

Ingress protection rating IP67

2 A with a FF type fuse for 500,000 operations with a resistive load per
IEC60947-4-1
2 A with a FF type fuse for 500,000 operations with an inductive load per
IEC60947-5-1

Attribute Value

Operating temperature -20…+80 °C (-4…+176 °F)

Mechanical life 1,000,000 operations

5.0 N•m (44.25 lb•in) mounting bolts

Torque settings, max

1.6 N•m (14.16 lb•in) lid screws

1.0 N•m (8.85 lb•in) terminal screws

1.6 N•m (14.16 lb•in) head bolts

ATT EN TI ON : The safety contacts of these products are described
as normally closed (N.C.), for example, with the guard closed,
actuator in place (where relevant), and the machine able to be
started.

Maintenance

Every week, check the alignment of the actuator to the switch and the
correct operation of the switching circuit. Also check for signs of abuse
or interference. Inspect the switch casing and actuator for damage.
Replace if needed.

At least every six months, isolate all power. Remove the lid and end
cover. Inspect all terminals for tightness. Clean out any accumulation of
fine dirt. Check for any sign of wear of damage, for instance, actuator
wear, cam assembly wear, contact oxidization and replace if needed.
Replace cover and tighten screws to specified settings. Reinstate the
power and check for correct operation. Reapply tamper evident varnish
or similar compound for mountings.

Repair

If there is any malfunction or damage, make no attempts at repair.
Replace before machine operation is allowed. DO NOT DISMANTLE
THE UNIT.

Information in Regard to UL508

The temperature rating of field wiring can’t be less than ambient when
used in elevated ambient zones.

Use copper conductors only. Use polymeric conduit only. End of line
device.

MT-GD2 Snap Acting Tongue Interlock Switches

40 (1.57)

4 x M5

1 x M20, 1 x 1/2" NPT

10.5 (0.41)

116.5 (4.59)

30.8 (1.21)

20.5 (0.81)

8.75 (0.34)

60 (2.36)

5 (0.2)

11.5 (0.45)

30 (1.18)43 (1.69)

38 (1.5)

40.7 (1.6)

30.8 (1.21)

9.2 (0.36)

5 (0.2)

8.75

(0.34)

25.5

(0.81)

17.5

(0.69)

36 (1.42)

25

(0.98)

57 (2.24)

3.5
(0.14)

Cat. No: 440K-A 11112

18

(0.71)

36 (1.42)

4 (0.16)

3.5 (0.14)

40 (1.57)
52 (2.05)

14.5

(0.57)

M5 CSK

Cat. No: 440G-A27011

31 (1.22)
40 (1.57)
52 (2.05)

8 (0.31)

6.8 (0.27)

20 (0.79)

13 (0.51)

19 ().75)

4 x 5.5 ( 0.22)

2 x M3

51 (2.0)

18

(0.71)

Cat. No: 440K-A27010

17.5

(0.69)

70 (2.75)

20

(0.78)

7 (0.27)

32.2 (1.26)

3 (0.11)

10.8 (0.42) 8 (0.31)

15 (0.59)

5.2 ( 0.2)

36 (1.41)

Cat. No: 440K-A17116

5 mm (0.2 in.)

1.6 N•

m (14.16 lb

• in)

B

D

C

A

2 x M5 CSK

(44.25 lb•in)

1 x M20

1/2" NPT

4 x M5

5.0 N•

m

IMPORTANT After installation and commissioning, the actuator, switch,

and switch lid mounting screws should be coated with
tamper evident varnish or similar compound.

The products shown in this document, conform with the Essential
Health and Safety Requirements (EHSRs) of the European Machinery
Directive. These products are third-party certified to EN 60947-5-1 and
EN ISO 14119.

Declaration of Conformity and certification: rok.auto/certifications

.

ISO 14119 defines types of interlocking devices and coding.

ATT EN TI ON : Discard the plastic transit plugs (shipped with select
conduit models only) at installation and replace with UL Listed
outlet box plugs or the equivalent.

Figure 1 - Approximate Dimensions [mm (in.)]

Figure 2 - Approximate Key Dimensions [mm (in.)]

Figure 3 - Assembly

2 Rockwell Automation - 440K-IN005B-EN-P - August 2019

Figure 4 - Wiring

2

5

1

3

4

Safety A

Safety A

Safety B

Safety B

21 22

11 12

5

4

2

1

Aux A

Ground

13 14

Aux B

23 24

3

2

3

8

7

5

1

4

6

Safety A

Safety A

Ground

N/A
Aux A
Aux A

Safety B

Safety B

23 24

21 22

11 12

6

4

7

3

1

8

5

13 14

2423

1413

2221

1211

8

9

1

9

8

7

6

4

3

1

10

12

6

11

3

7

2

5

4

Aux A

Ground

Aux A

Aux B

Aux B

Safety B

Safety B

Safety A

Safety A

5-pin Micro (M12) for

ArmorBlock Guard I/O

12-pin M23 Style8-pin Micro (M12)

14

24

13

23

11

21

1222

MT-GD2

1413
12

11

2423
22

21

2 Za

5.5 0 mm7

11/12
21/22

13/14

23/24

6.5

=

=

10

12

MT-GD2 Snap Acting Tongue Interlock Switches

Table 2 - Angle of Insertion [mm (in.)]

440G-A27011 175 (6.89) 175 (6.89) 175 (6.89) 175 (6.89)

440K-A11112 175 (6.89) 175 (6.89) 175 (6.89) 175 (6.89)

440G-A27143 175 (6.89) 60 (2.36) 60 (2.36) 60 (2.36)

440G-A27163 — — — —

440K-A17116 175 (6.89) 175 (6.89) 175 (6.89) 175 (6.89)

The terminals on this device are for either SELV Voltages or Hazardous Voltages, exclusively. Never connect SELV and Hazardous circuits to the
unit at the same time.

Check to be sure that the machine is isolated and stopped whenever the interlocked guard door is open.

IMPORTANT After installation and commissioning, the actuator, switch, and switch lid mounting screws should be coated with tamper evident varnish or a similar

compound.

Rockwell Automation - 440K-IN005B-EN-P - August 2019 3

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Publication 440K-IN005B-EN-P - August 2019 55721 Ver 07

Supersedes Publication 440K-IN005A-EN-P - January 2016 Copyright © 2019 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.

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