Printed in USA 07/06 P/N 49372 rev. D
Machine Safety Switches
®
SI-LM40 Series Limit Switch Style with In-Line Actuator
Kit Model†Actuator Type†Interlock Body†
Contact
Configuration
(Actuator Engaged)
Contact
Configuration
(Actuator Removed)
Switching
Diagram
SI-LM40MKHD
SI-QM-SSA
Straight,
Rigid, In-Line SI-LM40KHD
with
Metal Housing
SI-LM40MKHFD
SI-QM-SMFA
Right-angle,
Flexible, In-Line
SI-LM40MKHE
SI-QM-SSA
Straight,
Rigid, In-Line SI-LM40KHE
with
Metal Housing
SI-LM40MKHFE
SI-QM-SMFA
Right-angle,
Flexible, In-Line
SI-LM40MKHF
SI-QM-SSA
Straight,
Rigid, In-Line SI-LM40KHF
with
Metal Housing
SI-LM40MKHFF
SI-QM-SMFA
Right-angle,
Flexible, In-Line
Contacts: Open Closed Transition
Models
† A kit contains an interlock and actuator. Individual interlock bodies or actuators are
for replacement purposes only. See page 7 and the Warning on page 8.
Features
• Positive opening safety contacts (IEC 60947-5-1) (not dependent upon springs)
• Standard limit switch metal housing (EN 50041)
• Choose either of two stainless steel actuator types:
- Rigid in-line
- Flexible in-line
• Protective Earth Terminal (IEC 60947-1)
23 24
11 12
23 24
11 12
9 (0.35)
0 (0)
10 (0.39)
40 (1.58)
Engaged
Disengaged
11-12
23-24
Safety
Monitor
mm (in)
11 (0.43)
21 22
11 12
21 22
11 12
11 (0.43)
0 (0)
14 (0.55)
40 (1.58)
Engaged
Disengaged
11-12
21-22
Safety
Safety
mm (in)
NOTE: This symbol for a positive-opening safety contact (IEC 60947-5-1) is used in the
switching diagrams to identify the point in actuator travel where the normally closed
safety contact is fully open.
25 26
15 16
33 34
25 26
15 16
33 34
10.5 (0.39)
0 (0)
11 (0.43)
41 (1.62)
Engaged
Disengaged
15-16
25-26
Safety
Safety
33-34
Monitor
mm (in)
12 (0.47)
E
Feb 2013
Machine Safety Switch – SI-LM40 Series Limit Switch Style
2 P/N 49372 rev. D Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Important Information Regarding the Use of Safety Switches
In the United States, the functions that Banner safety switches are intended to perform are regulated by the Occupational Safety and Health
Administration (OSHA). Whether or not any particular safety switch installation meets all applicable OSHA requirements depends upon factors
that are beyond the control of Banner Engineering Corp. These factors include the details of how the safety switches are applied, installed, wired,
operated, and maintained.
Banner Engineering Corp. has attempted to provide complete application, installation, operation, and maintenance instructions. This information is
found in the instruction manual packaged with each safety switch. In addition, we suggest that any questions regarding the use or installation of
safety switches be directed to the factory applications department at the telephone numbers or address shown below.
Banner Engineering Corp. recommends that safety switches be applied according to the guidelines set forth in international (ISO/IEC) standards
listed below. Specifically, Banner Engineering Corp. recommends application of these safety switches in a configuration which meets safety
category 4, per ISO 13849 (EN954-1).
In addition, the user of Banner safety switches has the responsibility to ensure that all local, state, and national laws, rules, codes, and regulations
relating to the use of Banner safety switches in any particular application are satisfied. Extreme care is urged that all legal requirements have been
met and that all installations and maintenance instructions are followed.
U.S. Regulations Applicable to Use of Banner Safety Switches
OSHA Code of Federal Regulations: Title 29, Parts 1900 to 1910
Available from: Superintendent of Documents
Government Printing Office
P.O. Box 371954
Pittsburgh, PA 15250-7954
Tel: 202-512-1800
U.S. Standards Applicable to Use of Banner Safety Switches
ANSI B11 “ Standards for Construction, Care, and Use of Machine Tools”
Available from: Safety Director
AMT—The Association for Manufacturing Technology
7901 Westpark Drive
McLean, VA 22102
Tel: 703-893-2900
Applicable European and International Standards
ISO/TR 12100-1 “Safety of Machinery—Basic Concepts, General Principles for Design”
(EN292-18-2)
ISO 13852 (EN 294) “Safety of Machinery—Safety Distances to Prevent Danger Zones Being Reached by the Upper Limbs”
ISO 13853 (EN 811) “Safety of Machinery—Safety Distances to Prevent Danger Zones Being Reached by the Lower Limbs”
ISO 13849 (EN 954-1) “Safety of Machinery—Safety Related Parts of Control Systems”
ISO 13855 (EN 999) “ Safety of Machinery—The Positioning of Protective Equipment in Respect to Approach Speeds of Parts of the
Human Body”
ISO 14119 (EN 1088) “Safety of Machinery—Interlocking Devices Associated with Guards—Principles for Design and Selection”
IEC/EN 60204-1 “Safety of Machinery—Electrical Equipment of Machines”
IEC/EN 60947-5-1 “Low Voltage Switchgear—Electromechanical Control Circuit Devices”
Available from: Global Engineering Documents
15 Inverness Way East
Englewood, CO 80112-5704
Phone: 1-800-854-7179
Fax: 303-397-2740
Application Assistance
Toll Free: 1-888-3-SENSOR (1-888-373-6767)
Email: sensors@bannerengineering.com
Address: 9714 Tenth Avenue North
Minneapolis, MN 55441
E
Machine Safety Switch – SI-LM40 Series Limit Switch Style
P/N 49372 rev. D 3
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Figure 2. Actuator head may be rotated in
90º increments.
Mechanical Installation
The actuator head may be rotated, if desired, to any of four positions, in 90° increments.
To reposition the actuator head, unscrew the four mounting bolts, turn the head to the
desired position, and re-tighten the bolts (see Figure 2).
All mounting hardware is supplied by the user. The fasteners must be of sufficient
strength to guard against incidental breakage. Use of permanent fasteners or locking
hardware is recommended to prevent loosening or displacement of the actuator and
switch body.
The mounting holes in the switch body accept M5 (#10) screws. There are four holes on
a standard limit switch mounting pattern of 30 x 60 millimeters. The two mounting holes
on the actuator are spaced 20 millimeters apart. The grommet and sleeve design allows
a small amount of movement (i.e., misalignment) when the actuator engages the switch
body. The sleeves accept M4.5 (#8) screws.
Position the switch, with its actuator fully engaged, in the mounting location and mark the
mounting holes. Fasten the switch body and the actuator in place. The non-adjustable
(rigid) in-line actuators includes floating sleeves in the mounting holes to allow some
forgiveness for switch-to-actuator alignment. Take care to not over-tighten the actuator
fasteners so as to allow this movement. After the mounting hardware is secure, check
the actuator/switch engagement for misalignment and binding.
IMPORTANT: A safety switch must be installed in a manner which discourages
tampering or defeat. Mount switches to prevent bypassing of the switching
function at the terminal chamber. A switch and its actuator must never be used as
a mechanical stop. Overtravel may cause damage to switch.
WARNING ...
It must not be possible for
personnel to reach any
hazard point through an opened guard (or
any opening) before hazardous machine
motion has completely stopped. Please
reference OSHA CFR 1910.217 and ANSI
B11 standards (see page 2) for information
on determining safety distances and safe
opening sizes for your guarding devices.
90º
Round (5 mm) holes
for permanent
installation (2X)
Slotted holes for initial
alignment only (2X)
Remove to access wiring
chamber (2X)
Figure 1. Features
E
Machine Safety Switch – SI-LM40 Series Limit Switch Style
4 P/N 49372 rev. D Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Figure 3. Connect two redundant safety switches per interlock guard to an appropriate
2-channel input safety module.
Safety
Switch
#1
Safety
Switch
#2
Input
Channel
#1
Input
Channel
#2
2-channel Safety Module
(2-channel E-stop Module
2-channel Gate Monitor Module, etc.)
Single gate
or guard
11/15 12/16 11/15 12/16
NOTE: Refer to the installation
instructions provided with the
safety module for information
regarding the interface of the
safety module to the machine
stop control elements.
Electrical Installation
Access to the Wiring Chamber
The wiring chamber is accessed via a cover plate. The metal switch body uses two
screws to hold the cover plate on. A conduit adapter is supplied to convert the
M20 x 1.5 thread to ½"-14 NPT. An accessory cable gland which fits the M20 x 1.5
thread is available (see page 7).
Connection to a Machine
Two types of contacts are offered. The NC contact is the safety contact, which is
closed (i.e., it conducts) when the actuator is engaged. The NO contact is considered a
monitoring contact, which should not be used for safety switching.
As illustrated in Figure 3, a normally closed safety contact (i.e., a safety contact that is
closed when the actuator is engaged) from each of two safety switches per interlock
guard must connect to a 2-channel safety module or safety interface in order to achieve
a control reliable interface to the master stop control elements of a machine. Examples of
appropriate safety modules include 2-channel emergency stop (E-stop) safety modules
and gate monitor safety modules.
Two functions of the safety module or safety interface are:
1. to provide a means of monitoring the contacts of both safety switches for contact
failure, and to prevent the machine from restarting if either switch fails; and
2. to provide a reset routine after closing the guard and returning the safety switch
contacts to their closed position. This prevents the controlled machinery from restarting
by simply reinserting the safety switch actuators. This necessary reset function is
required by ANSI B11 and NFPA 79 machine safety standards.
Use only a positively driven, normally closed safety contact from each switch for
connection to the safety module. The normally open contact may be used for control
functions that are not safety-related. A typical use is to communicate with a process
controller. Refer to the installation instructions provided with the safety modules for more
information regarding the interface of the safety module to the machine stop control
elements.
CAUTION . . .
Electrical Installation
Two safety switches must be
used for each interlock guard to achieve
control reliability or Safety Category 4 (per
ISO 13849-1, EN 954-1) of a machine stop
circuit. Use of only one safety switch per
interlock guard is not recommended.
In addition, normally-closed safety contacts
from each of the two safety switches should
be connected to the two separate inputs of a
2-channel safety module or safety interface,
as illustrated in Figure 6. This is required to
provide monitoring for safety switch contact
failure, and to provide the necessary reset
routine, as required by IEC 60204-1 and
NFPA 79 machine safety standards.
WARNING . . .
Series
Connection of Safety
Interlock Switches
Monitoring multiple guards with a series
connection of multiple safety interlock
switches is not a Safety Category 4
Application (per ISO 13849-1, EN 954-1).
A single failure may be masked or not
detected at all. When such a configuration
is used, procedures must be performed
regularly to verify proper operation of each
switch.
E
Machine Safety Switch – SI-LM40 Series Limit Switch Style
P/N 49372 rev. D 5
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Periodic Checks
Safety switches should be checked at each shift change or machine setup by a
designated person (see below) for:
1. Breakage of the switch body or actuator,
2. Good alignment and full engagement of the actuator with the receptor,
3. Confirmation that the safety switch is not being used as an end stop,
4. Loosening of the switch or actuator mounting hardware, and
5. Verification that it is not possible to reach any hazard point through an opened guard
(or any opening) before hazardous machine motion has completely stopped.
In addition, a qualified person should check for the following on a periodic schedule,
determined by the user, based upon the severity of the operating environment and the
frequency of switch actuations:
1. Check the wiring chamber for signs of contamination.
2. Check the contacts for signs of deterioration or damage.
3. Inspect the electrical wiring for continuity and damage.
4. Verify that wiring conforms to the instructions on page 4 of this data sheet.
A designated person is identified in writing by the employer as being appropriately trained
to perform a specified checkout procedure. A qualified person possesses a recognized
degree or certificate or has extensive knowledge, training, and experience to be able to
solve problems relating to the safety switch installation.
Repairs
Do not attempt any repairs to the switch. It contains no field-replaceable
components. Return the switch to the factory for warranty repair or replacement.
If it ever becomes necessary to return a switch to the factory, please do the following:
1. Contact the Banner applications engineering department at the number or address
listed on the back cover. They will attempt to troubleshoot the system from your
description of the problem. If they conclude that a component is defective, they will
issue an RMA (Return Merchandise Authorization) number for your paperwork, and
give you the proper shipping address.
2. Pack the switch carefully. Damage which occurs in shipping is not covered by warranty.
E
Machine Safety Switch – SI-LM40 Series Limit Switch Style
6 P/N 49372 rev. D Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Specifications
Contact Rating 10A @ 24V ac, 10A @110V ac, 6A @ 230V ac
6A @24V dc
2.5 kV max. transient tolerance
NEMA A300 P300
European Rating Utilization categories: AC15 and DC13
Switches with 1 and 2 contact pairs:
Ui = 500V ac
Ith = 10A
40-60 Hz
U
e
V
Ie/AC-15
A
Ie/AC-13
A
24 10 6
110 10 1
230 6 0.4
Contact Material Silver-nickel alloy
Maximum Switching Speed 50 operations per minute
Maximum Actuator Speed 1.5 m/second (5'/second)
Minimum Actuator
Engagement Radius
Rigid actuators: 400 mm (16")
Flexible actuators: 150 mm (6")
Actuator Extraction Force 10 N (2.2 lbf)
Short Circuit Protection 6 amp Slow Blow, 10 amp Fast Blow. Recommended external fusing or overload protection.
Mechanical Life 1 million operations
Wire Connections Screw terminals with pressure plates accept the following wire sizes –
Stranded and solid: 20 AWG (0.5 mm2) to 16 AWG (1.5 mm2) for one wire
Stranded: 20 AWG (0.5 mm2) to 18 AWG (1.0 mm2) for two wires
Cable Entry M20 x 1.5 threaded entrance. Adapter supplied to convert M20 x 1.5 to ½" – 14 NPT threaded entrance
Construction Aluminum alloy die-cast housing
Environmental Rating IEC IP65
Operating Conditions Temperature:
-30° to +80° C (-22° to +176° F)
Weight 0.34 kg (0.75 lb)
Certifications
E
Machine Safety Switch – SI-LM40 Series Limit Switch Style
P/N 49372 rev. D 7
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Dimensions
32.0 mm
(1.26")
40.0 mm
(1.57")
2.0 mm
(0.08")
118.8 mm
(4.68")
60.0 mm
(2.36")
4 x ø5.2 mm
(0.20")
30.0 mm
(1.18") 42.0 mm
(1.65")
33.0 mm
(1.30")
77.5 mm
(3.05")
11.6 mm
(0.46") 37.2 mm
(1.46")
L*
41.3 mm
(1.63")
SI-QM-SSA 81.4 - 89.4 mm
(3.20" - 3.52")
SI-QM-SMFA 82.4 - 90.4 mm
(3.24" - 3.56")
Actuator
Model *Length L
M20 x 1.5 mm
(0.06")
1/2"-14 NPT
Adapter is Supplied
Accessories
Cable Glands
Size Model Used with
Switch Models
For Cable
Diameters Dimensions
M20 x 1.5
Metal
SI-QM-CGM20 All 5.0 to 12.0 mm
(0.20" to 0.47")
M20 x 1.5
24.0 mm
(0.94")
35.5 mm
(1.40")
Actuator DimensionsSwitch Dimensions
15 mm
(0.59")
20.0 mm
(0.79")
80.0 mm
(3.15")
7.5 mm
(0.30")
2 x ø4.8 mm
(0.19")
Model SI-QM-SSA
40 mm
(1.6")
29 mm
(1.1")
C
L
50 mm
(2.0")
81 mm
(3.2")
41 mm
(1.6")
ø 5.5 mm
(0.22")
Model SI-QM-SMFA
*NOTE: One conduit adapter is supplied with each switch.
Replacement Parts
Description Model* Used with
Switch Models
Thread
Conversion Dimensions
½"-14 NPT
Metal
Conduit Adaptor
SI-QM-M20 All
M20 x 1.5
to
½"-14 NPT
23.0 mm
(0.91")
M20 x 1.5
24.0 mm
(0.94")
1/2"-14 NPT
Internal Thread
O-ring
E
Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN USA 55441 • Phone: 763.544.3164 • www.bannerengineering.com • Email: sensors@bannerengineering.com
Machine Safety Switch – SI-LM40 Series Limit Switch Style
®
P/N 49372 rev. D
WARRANTY:
Banner Engineering Corp. warrants its products to be free from defects for one year. Banner Engineering Corp. will repair or replace,
free of charge, any product of its manufacture found to be defective at the time it is returned to the factory during the warranty period. This warranty
does not cover damage or liability for the improper application of Banner products. This warranty is in lieu of any other warranty either expressed or
implied.
WARNING . . .
Spare actuators must NEVER be used to bypass or otherwise defeat the protective function of a safety switch. To do so may create an
unsafe situation which could lead to serious injury or death.
Accessory Actuators
Description Model Used with
Switch Models Dimensions
Rigid in-line metal actuator
used for doors or covers.
Slide-bolt design for use
in heavy-duty applications
where alignment is difficult
to maintain.
SI-QM-SB All
40.0 mm
(1.60")
3.0 mm
(0.13")
9.6 mm
(0.40")
20.0 mm
(0.80")
59.0 mm
(2.30")
20.0 mm
(0.80")
100.0 mm
(3.9")
140.0 mm
(5.50")
42.0 mm
(1.70")
38.0 mm
(1.50")
Ø8 mm hole
for locking bolt
in the open
position
31.0 mm
(1.20")
47.0 mm
(1.90")
4x Ø5.5 mm (0.20")
Banner Engineering Corp Limited Warranty
Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment.
Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is
found to have been defective during the warranty period. This warranty does not cover damage or liability for misuse, abuse, or the improper
application or installation of the Banner product.
THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED (INCLUDING,
WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING
UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE.
This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER
ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS
OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM
THE USE OR INABILITY TO USE THE PRODUCT, WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT
LIABILITY, NEGLIGENCE, OR OTHERWISE.
Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities
relating to any product previously manufactured by Banner Engineering Corp.
