SI-QS75 and SI-QS90 Series 75 mm and 90 mm Flat Pack Style
•
Positive opening safety contacts (IEC 60947-5-1) (not dependent upon
springs)
• Mechanically coded actuators use two independent operating elements to mini-
mize intentional tampering or defeat
• Rotating head allows actuator engagement from front or back or either of two top
positions
• Choice of four standard actuators; special high extraction force actuator is availa-
ble as option
• IEC IP65 switch housing rating may be increased to IEC IP67 with addition of
screw to wiring chamber door
• Insulated device (IEC 60947-5-1) on all models with plastic housings
Kit Model * Actuator Type * Interlock
Body *
Contact Configura-
tion (Actuator Engag-
ed)
Contact Configuration
(Actuator Removed)
Switching Dia-
grams
SI-QS90MD SI-QS-SSA-4 In-
Line Stamped
SI-QS90D
One N.C. and One N.O. Contact
3.2 (0.13)
2.4 (0.09)
0 (0)
3.4 (0.13)
21.5 (0.85)
mm (in)
Engaged
Disengaged
Safety
Monitor
11-12
23-24
23 24
11 12
23 24
11 12
SI-QS90MFD (Di-
rect replacement for
models SI-
QS90MRHD and SI-
QS90MRVD)
SI-QS-SSU Flexible
SI-QS90MDHF
(High Force) **
SI-QS-SSA In-Line
Die-Cast SI-QS90DHF
SI-QS90ME SI-QS-SSA-4 In-
Line Stamped
SI-QS90E
Two N.C. Contacts
6.2 (0.24)
0 (0)
11-12
21-22
7.2 (0.28)
21.5 (0.85)
mm (in)
Engaged
Disengaged
Safety
Safety
21 22
11 12
21 22
11 12
SI-QS90MFE (Di-
rect replacement for
models SI-
QS90MRHE and SI-
QS90MRVE)
SI-QS-SSU Flexible
SI-QS90MEHF
(High Force) **
SI-QS-SSA In-Line
Die-Cast SI-QS90EHF
Machine Safety Switches
P/N 049370 Rev. F 2/19/2013
0 049370 7
Kit Model * Actuator Type * Interlock
Body *
Contact Configura-
tion (Actuator Engag-
ed)
Contact Configuration
(Actuator Removed)
Switching Dia-
grams
SI-QS90MF SI-QS-SSA-4 In-
Line Stamped
SI-QS90F
Two N.C. and One N.O. Contact
3.0 (0.12)
3.5 (0.14)
0 (0)
15-16
25-26
33-34
5.0 (0.20)
21.5 (0.85)
mm (in)
Engaged
Disengaged
Safety
Safety
Monitor
25 26
33 34
15 16
25 26
33 34
15 16
SI-QS90MFF (Direct
replacement for
models SI-
QS90MRHF and SI-
QS90MRVF)
SI-QS-SSU Flexible
SI-QS90MFHF
(High Force) **
SI-QS-SSA In-Line
Die-Cast
SI-QS90FSI-
QS90F
SI-QS75MC SI-QS-SSA-4 In-
Line Stamped
SI-QS75C
One N.O. Contacts
11 12
11 12
SI-QS75MFC (Di-
rect replacement for
models SI-
QS75MRHC and SI-
QS75MRVC)
SI-QS-SSU Flexible
SI-QS75MCHF
(High Force) **
SI-QS-SSA In-Line
Die-Cast SI-QS75CHF
Switching Diagram Key
Contacts: Open Closed Transition
This symbol ( ) is used in the switching diagrams to identify the point in actuator travel where the normally closed safety contact is
fully open.
* A kit contains an interlock and actuator. Individual interlock bodies or actuators are for replacement purposes only. See the warning in
Accessories on page 8.
** High Force: 50 N (11.25 lbf) holding force integrated into switch. Use SI-QS-SSA In-Line Actuator only; also see accessory SI-QS-100.
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 in-
formation 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.
Application Assistance
Toll Free: 1-888-3-SENSOR (1-888-373-6767)
Machine Safety Switches
2 www.bannerengineering.com - tel: 763-544-3164 P/N 049370 Rev. F
Email: sensors@bannerengineering.com
9714 Tenth Avenue North
Minneapolis, MN 55441
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 Machine Tools Safety
Contact: 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 (EN 292-1 & -2) Safety of Machinery – Basic Concepts, General Principles for Design
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 13849-1 (EN 954-1) Safety-Related Parts of Control Systems
ISO 13855 (EN 999) The Positioning of Protective Equipment in Respect to Approach Speeds of Parts of the Human Body
ISO 14119 (EN 1088) Interlocking Devices Associated with Guards – Principles for Design and Selection
IEC 60204-1 Electrical Equipment of Machines Part 1: General Requirements
IEC 60947-5-1 Low Voltage Switchgear – Electromechanical Control Circuit Devices
Contact: Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80112-5704, Tel.: 800-854- 7179
Overview
Easy Access
The wiring chamber is accessed via a hinged door.
Simply insert a flat-blade screwdriver, as shown,
and pry gently down to open.
Machine Safety Switches
P/N 049370 Rev. F www.bannerengineering.com - tel: 763-544-3164 3
Rotating Actuator Head
The actuator head may be rotated 180° to create four possible ac-
tuator engagement locations. To rotate the head:
1. Open the wiring chamber door, as shown.
2. Using a small flat-blade screwdriver, dislodge the two locking
tabs located on the backside of the switch.
3. Lift the head straight off of the switch body.
4. Rotate the head, as shown, and reinstall it on the switch body.
Mechanical Installation
WARNING: Hazard Point
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 for information on determining safety
distances and safe opening sizes for your guarding devices.
IMPORTANT: A safety switch must be installed in a manner that 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.
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.
Use ONLY for
alignment
during installation
Use for
permanent mounting
M5 (#10) Clearance
Snap-On Cap
1. Temporarily mount the switch body in place, with its actuator inserted, using the slotted 5 mm holes.
NOTE: The slotted holes in the switch body must ONLY be used for alignment during installation. The round 5 mm holes (only) must
be used for permanent mounting to prevent loosening or displacement of the actuator and the switch body. Only M5 (#10) screws
(user supplied), should be used.
2. Slide the switch body on its temporary fasteners to locate and mark the actuator mounting position. Remove the actuator from the
switch body and mount it using tamper-resistant 5 mm (#10) hardware (e.g., Torx-head screws, rivets, etc.). Slide the switch body on
its temporary fasteners to locate and mark the actuator mounting position. Remove the actuator from the switch body and mount it
using tamper-resistant 5 mm (#10) hardware (e.g., Torx-head screws, rivets, etc.).
NOTE: The non-adjustable in-line actuator 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. This actuator also includes a
snap-on cap to cover the fasteners.
Machine Safety Switches
4 www.bannerengineering.com - tel: 763-544-3164 P/N 049370 Rev. F
3. Engage the actuator into the switch body. Align them so that the actuator is fully engaged. Fasten the switch body in place using two
tamper-resistant 5 mm (#10) screws through the two round holes. Check switch engagement for misalignment and binding.
Electrical Installation
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. This is required to provide moni-
toring 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 safety interlock switches may result in a failure be-
ing masked or not detected at all. When such a configuration is used, periodic checks must be performed
regularly to verify proper operation. All failures must be immediately corrected ( e.g. immediately replacing
a failed switch), or the loss of the safety stop signal or an inappropriate reset could lead to serious injury or
death.
Access to the Wiring Chamber
The wiring chamber is accessed via the hinged door (see Overview on page 3). Select the best wiring entrance and thread in the ½" x 14
NPT conduit adapter (supplied), or the optional M20 x 1.5 or M16 x 1.5 cable gland. The switch knockout will break loose with the final
turn of the conduit adapter or cable gland (i.e., as it bottoms out).
Connection to a Machine
As illustrated below, 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 to:
1. 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. 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.
Machine Safety Switches
P/N 049370 Rev. F www.bannerengineering.com - tel: 763-544-3164 5
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
Figure 1. Connect two redundant safety switches per interlock
guard to an appropriate 2-channel input safety module.
Refer to the installation instructions provided with the safety mod-
ule for information regarding the interface of the safety module to
the machine stop control elements.
Periodic Checks
Safety switches should be checked at each shift change or machine setup by a designated person 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 the wiring conforms to the instructions given in this datasheet.
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 (ANSI B30.2).
Repairs
Do not attempt any repairs to the Module. It contains no field-replaceable components. Return it to the factory for warranty repair
or replacement by contacting Banner Factory Application Engineering. They will attempt to troubleshoot the system from your description
of the problem. If they conclude a component is defective, they will issue a return merchandise authorization (RMA) number for your
paperwork and give you the proper shipping address.
Pack the Module carefully. Damage that occurs in return shipping is not covered by warranty.
CAUTION: Abuse of Module After Failure
If an internal fault has occurred and the Module will not reset, do not tap, strike, or otherwise attempt to
correct the fault by a physical impact to the housing. An internal relay may have failed in such a man-
ner that its replacement is required.
If the Module is not immediately replaced or repaired, multiple simultaneous failures may accumu-
late such that the safety function can not be guaranteed.
Machine Safety Switches
6 www.bannerengineering.com - tel: 763-544-3164 P/N 049370 Rev. F
Specifications
Contact Rating
10A @ 24V ac, 10A @ 110V ac, 6A @ 230V ac; 6A @
24V dc
2.5 kV max. transient tolerance
NEMA A300 P300
Contact Material
Silver-nickel alloy
Maximum Switching Speed
30 operations per minute
Maximum Actuator Speed
1 m/second (39"/second)
Minimum Actuator Engagement Radius
In-line actuators: 150 mm (6 inches)
Flexible actuators: 50 mm (2 inches) in all directions
Actuator Extraction Force
High force models: 50 Newtons (11 lbf)
All other models: 10 Newtons (2.2 lbf)
Short Circuit Protection
6 amp Slow Blow, 10 amp Fast Blow. Recommended
external fusing or overload protection.
Wire Connections
Screw terminals with pressure plates accept the follow-
ing wire sizes –
For switches with one or two contacts: 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
For switches with three contacts: Stranded and solid:
20 AWG (0.5 mm2) to 18 AWG (1.0 mm2) for one wire;
Stranded: 20 AWG (0.5 mm2) to 18 AWG (1.0 mm2)
for two wires
Cable Entry
SI-QS75 models: M16 x 1.5 threaded entrance
SI-QS90 models: M20 x 1.5 threaded entrance
Adapter supplied to convert to ½"-14 NPT threaded en-
trance.
European Rating
Utilization categories: AC15 and DC13 (IEC 60947-5-1)
Switches with 1 and 2 contact pairs: Ui = 500V ac; Ith =
10 A
Switches with 3 contact pairs: Ui = 400V ac; Ith = 5A
40-60 Hz
Ue Ie/AC-15 Ie/DC-13
V A A
24 10 6
110 10 1
230 6 0.4
Mechanical Life
1 million operations
Construction
Glass fiber-reinforced polyamide thermoplastic hous-
ing; UL 94-V0 rating
Environmental Rating
IEC IP65
NOTE: Addition of a No. 3 x ¼" screw (max) to the wir-
ing access door increases sealing to IEC IP67, NEMA
4X
Operating Conditions
Temperature: -30° to +80° C (-22° to +176° F)
Weight
SI-QS75 models: 0.11 kg (0.25 lb)
SI-QS90 models: 0.13 kg (0.29 lb)
Application Notes Certifications
Models with one and two contacts have three cable entry locations
(bottom and two sides); models with three contacts have two cable
entry locations (two sides). All entry locations are sealed with
knockouts. To remove knockouts, thread the supplied M16 x 1.5 or
M20 x 1.5 to ½"–14 NPT conduit adapter or optional M16 x 1.5 or
M20 x 1.5 cable gland into one of the threaded entry locations. The
knockout will break open just before the adapter or cable gland
bottoms out.
Machine Safety Switches
P/N 049370 Rev. F www.bannerengineering.com - tel: 763-544-3164 7
Dimensions
90.0 mm
(3.55")
Ø 5.3 mm
(0.21") (2) ø 5.5 mm
(0.22") (2)
7.0 mm
(0.28")
52.0 mm
(2.05")
40.0 mm
(1.57")
18 mm
(0.71")
5.5 mm
(0.22")
8.0 mm
(0.31")
29.0 mm
(1.15") 75.0 mm
(2.95")
33.0 mm
(1.31")
SI-QS75 - 3 x M16 x 1.5
SI-QS90 - 3 x M20 x 1.5
1/2"-14 NPT
Adapter is Supplied
30.0 mm
(1.18")
8.0 mm
(0.31")
13.0 mm
(0.52")
16.0 mm
(0.64")
17.5 mm
(0.70")
22.0 mm
(0.87")
Front View Front View Side View
Side View with
Head Rotated 180°
M20 x 1.5
(0.06")
M16 x 1.5
(0.06")
Model SI-QS-SSA In-line Actuator Model SI-QS-SSA-4 In-line Actuator Model SI-QS-SSU Flexible Actuator
Switch and Actuator - Top View 7.5 mm
(0.30")
14.0 mm
(0.56")
8.0 mm
(0.32")
5.6 mm
(0.32")
52.0 mm
(2.07")
40.0 mm
(1.59")
ø5.2 (0.21")
15.0 mm
(0.60")
40.0 mm
(1.59")
52.0 mm
(2.07")
15.0 mm
(0.60")
14.0 mm
(0.55")
40.0 mm
(1.59")
52.0 mm
(2.07")
40.0 mm
(1.59")
52.0 mm
(2.07")
7.5 mm
(0.30")
8.0 mm
(0.32")
8.0 mm
(0.32")
Switch and Actuator Top View
40.0 mm
(1.57")
52.0 mm
(2.04")
18.0 mm
(0.72")
20.0 mm
(0.78")
Switch and Actuator Top View
Accessories
Cable Glands
Model Size For Cable Diameter Dimensions Used With
SI-QS-CGM16 M16 × 1.5 Plastic 3.0 to 8.0 mm (0.12"
to 0.31")
M16 x 1.5
19.0 mm
(0.75")
34.0 mm
(1.34")
SI-QS75 Safety Interlock
Switches
SI-LS83 Safety Interlock
Switches
Machine Safety Switches
8 www.bannerengineering.com - tel: 763-544-3164 P/N 049370 Rev. F
Model Size For Cable Diameter Dimensions Used With
SI-QS-CGM20 M20 × 1.5 Plastic 5.0 to 12.0 mm
(0.20" to 0.47")
M20 x 1.5
25.0 mm
(0.98")
37.0 mm
(1.46")
SI-QS90 Safety Interlock
Switches
SI-LS100 Safety Interlock
Switches
SI-LS31 Safety Interlock
Switches
SI-LS42 Safety Interlock
Switches
RP-LS42 Rope Pull Switches
Conduit Adapters
One conduit adapters is supplied with each switch.
Model Size Thread Conversion Dimensions Used With
SI-QS-M16 ½"-14 NPT Plas-
tic
M16 x 1.5 to ½"-14
NPT
24.0 mm
(0.94")
25.0 mm
(0.98")
M16 x 1.5
1/2"-14 NPT
Internal Thread
SI-QS75 Safety Interlock
Switches
SI-LS83 Safety Interlock
Switches
Model Size Thread Conversion Dimensions Used With
SI-QS-M20 ½"-14 NPT Plas-
tic
M20 x 1.5 to ½"-14
NPT
25.0 mm
(0.98")
M20 x 1.5
24.0 mm
(0.94")
1/2"-14 NPT
Internal Thread
SI-QS90 Safety Interlock
Switches
SI-LS100 Safety Interlock
Switches
SI-LS31 Safety Interlock
Switches
SI-LS42 Safety Interlock
Switches
RP-LS42 Rope Pull Switches
Misc
High Force Adapter Model Application
SI-QS-100 High-force accessory for in-line actuator SI-QS-SSA. Provides
additional holding force for particularly heavy doors, gates, or
guards. Adjustable from 50 to 100 Newtons (force). Used only for
switches with in-line actuator SI-QS-SSA.
Machine Safety Switches
P/N 049370 Rev. F www.bannerengineering.com - tel: 763-544-3164 9
Replacement Actuators
Model Application
SI-QS-SSA (Inline)
For doors or covers with a radius of 150 mm (6 inches), or greater. A
one-way snap-on cap is supplied to prevent unauthorized removal of
the actuator mounting hardware. The actuator is die-cast stainless
steel.
SI-QS-SSA-4 (Flexible
Inline)
For doors or covers with a radius of 150 mm (6 inches), or greater. A
one-way snap-on cap is supplied to prevent unauthorized removal of
the actuator mounting hardware. The actuator is stamped steel.
SI-QS-SSU (Flexible) For hinged doors with a radius of 50 mm (2 inches) or greater. Flexes
in four directions. The actuator is die-cast stainless steel.
SI-QS-SSUA (Adapter
Plate)
Clear acrylic adapter plate used to retrofit SI-QS-SSU to older flexible
actuators SI-QS-HMA and SI-QS-VMA.
WARNING: Spare Actuators
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.
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 (IN-
CLUDING, 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, EXPEN-
SES, 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 WAR-
RANTY, 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.
Machine Safety Switches
www.bannerengineering.com - tel: 763-544-3164