Banner SI-GL42 Series User manual

SI-GL42 Series Locking-Style Safety
Interlock Switch
Instruction Manual
Original Instructions
220476 Rev. A
22 January 2021
©Banner Engineering Corp. All rights reserved
220476

Contents
1 Product Overview ........................................................................................................................................................... 3
1.1 Models ............................................................................................................................................................................................. 3
1.2 Important... Read this before proceeding! .......................................................................................................................................5
1.3 Overview ......................................................................................................................................................................................... 5
2 Installation Instructions ...................................................................................................................................................6
2.1 Installation Requirements ................................................................................................................................................................ 6
2.2 Pass-through hazards and Perimeter Guarding ............................................................................................................................. 7
2.3 Mechanical Installation .................................................................................................................................................................... 7
2.3.1 Position the Actuator Head ..................................................................................................................................................... 8
2.3.2 Install the Switch and Actuator ............................................................................................................................................... 8
2.3.3 Align the SI-QM-SMFA-2 ...................................................................................................................................................... 10
2.3.4 Escape/Emergency/Auxiliary Release Mechanism ............................................................................................................... 10
2.4 Access the Wiring Chamber ......................................................................................................................................................... 13
2.4.1 Wiring the Terminals ..............................................................................................................................................................13
2.5 Connection to a Machine ..............................................................................................................................................................13
3 Operating Instructions .................................................................................................................................................. 16
3.1 Checkout Procedures ................................................................................................................................................................... 16
3.1.1 Initial and Daily Checks .......................................................................................................................................................... 16
3.1.2 Periodic Checks ..................................................................................................................................................................... 16
4 Specifications ................................................................................................................................................................ 17
4.1 Dimensions .................................................................................................................................................................................... 17
5 Accessories ................................................................................................................................................................... 20
5.1 Actuators and Unlock Mechanisms ...............................................................................................................................................20
5.2 Plastic Conduit Adapter ................................................................................................................................................................20
5.3 Cable Glands ................................................................................................................................................................................ 20
5.4 Universal (Input) Safety Modules ................................................................................................................................................... 20
5.5 Safety Controllers .......................................................................................................................................................................... 21
6 Product Support and Maintenance .............................................................................................................................. 22
6.1 Repairs ..........................................................................................................................................................................................22
6.2 EU Declaration of Conformity (DoC) .............................................................................................................................................. 22
6.3 Banner Engineering Corp. Limited Warranty ................................................................................................................................ 22
SI-GL42 Series Locking-Style Safety Interlock Switch

1 Product Overview
SI-GL42 Series Locking-Style Safety Interlock Switch for interlocking and position monitoring
• Positive opening safety contacts (per IEC 60947-5-1)
•Contact monitors both the presence of the actuator and if it is locked into the interlock
• Choice of two locking mechanism types:
◦Spring lock with energized solenoid release
◦Energized solenoid lock with spring release
• All models have an integrated manual release mechanism (front and back)
• Four stainless steel actuator options
• Actuator head rotatable in 90° increments providing five actuator positions (one vertical
option)
• Many different actuator and monitoring contact configurations to satisfy any application
• Lightweight yet robust design (plastic body but the mechanically stressed components like
the rotating head are metal)
• IP67 environmental rating making the unit suitable for demanding industrial environments
•Insulated device (IEC 60947-5-1)
• M12 connector options (contact Banner Engineering for pre-wired M12 connector options)
1.1 Models
A complete safety system is typically made up of two interlocks, two actuators, two cables, and a safety monitoring device.
The use of an emergency release mechanism depends on the application.
To order an interlock body model, insert Sfor Spring Lock/Solenoid Unlock or Mfor Solenoid Lock/Spring Unlock. For
example: SI-GL42D_20-20 can become SI-GL42DM20-20 or SI-GL42DS20-20,
Interlock Body
Model
Solenoid
Voltage
Actuator
Contacts
Solenoid
Monitor
Contacts
Actuator Engaged and Locked Actuator Engaged but Not
Locked
Actuator Unlocked and
Removed
SI-GL42D_11-11 24 V
AC/DC 1 NC/1 NO 1 NC/1 NO
Actuator Contacts
21 22
13 14
Solenoid Monitor Contacts
31 32
43 44
E1 E2
+–
Actuator Contacts
21 22
13 14
Solenoid Monitor Contacts
31 32
43 44
E1 E2
+–
Actuator Contacts
21 22
13 14
Solenoid Monitor Contacts
31 32
43 44
E1 E2
+–
SI-GL42D_20-11 24 V
AC/DC 2 NC 1 NC/1 NO
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
31 32
43 44
E1 E2
+–
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
31 32
43 44
E1 E2
+–
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
31 32
43 44
E1 E2
+–
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Interlock Body
Model
Solenoid
Voltage
Actuator
Contacts
Solenoid
Monitor
Contacts
Actuator Engaged and Locked Actuator Engaged but Not
Locked
Actuator Unlocked and
Removed
SI-GL42D_21-10 24 V
AC/DC 2 NC/1 NO 1 NC
Actuator Contacts
31 32
21 22
Solenoid Monitor Contacts
41 42
E1 E2
+–
13 14
Actuator Contacts
31 32
21 22
Solenoid Monitor Contacts
41 42
E1 E2
+–
13 14
Actuator Contacts
31 32
21 22
Solenoid Monitor Contacts
41 42
E1 E2
+–
13 14
SI-GL42D_30-10 24 V
AC/DC 3 NC 1 NC
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
41 42
E1 E2
+–
31 32
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
41 42
E1 E2
+–
31 32
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
41 42
E1 E2
+–
31 32
SI-GL42D_20-20 24 V
AC/DC 2 NC 2 NC
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
31 32
41 42
E1 E2
+–
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
31 32
41 42
E1 E2
+–
Actuator Contacts
11 12
21 22
Solenoid Monitor Contacts
31 32
41 42
E1 E2
+–
SI-GL42D_01-21 24 V
AC/DC 1 NO 2 NC/1 NO
Actuator Contacts
Solenoid Monitor Contacts
43 44
E1 E2
+–
13 14
31 32
21 22
Actuator Contacts
Solenoid Monitor Contacts
43 44
E1 E2
+–
13 14
31 32
21 22
Actuator Contacts
Solenoid Monitor Contacts
43 44
E1 E2
+–
13 14
31 32
21 22
SI-GL42D_10-21 24 V
AC/DC 1 NC 2 NC/1 NO
Actuator Contacts
Solenoid Monitor Contacts
43 44
E1 E2
+–
11 12
31 32
21 22
Actuator Contacts
Solenoid Monitor Contacts
43 44
E1 E2
+–
11 12
31 32
21 22
Actuator Contacts
Solenoid Monitor Contacts
43 44
E1 E2
+–
11 12
31 32
21 22
—Signifies which contacts are positive opening safety contacts (per IEC 60947-5-1). This contact is forced open by the
action of removing the actuator from the Interlock.
—Signifies which contact is positively connected to the locking mechanism. This contact cannot close if the actuator is
not present in the interlock.
The model table lists only the interlock body, a required actuator is ordered separately. Emergency release mechanisms are
also ordered separately. For the complete lists of actuators and emergency release mechanisms see Accessories on p.
20.
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1.2 Important... Read this before proceeding!
The user is responsible for satisfying all local, state, and national laws, rules, codes, and regulations relating to the use of
this product and its application. Banner Engineering Corp. has made every effort to provide complete application,
installation, operation, and maintenance instructions. Please contact a Banner Applications Engineer with any questions
regarding this product.
The user is responsible for making sure that all machine operators, maintenance personnel, electricians, and supervisors are
thoroughly familiar with and understand all instructions regarding the installation, maintenance, and use of this product, and
with the machinery it controls. The user and any personnel involved with the installation and use of this product must be
thoroughly familiar with all applicable standards, some of which are listed within the specifications. Banner Engineering
Corp. makes no claim regarding a specific recommendation of any organization, the accuracy or effectiveness of any
information provided, or the appropriateness of the provided information for a specific application.
1.3 Overview
The SI-GL42 Series Locking-Style Safety Interlock Switch with guard locking capability can be used to monitor the position
of a guard to detect its movement, opening, or removal.
The SI-GL42 Interlock Switch can also be used to secure the guard in place to allow the hazard time to stop before the
guard is opened. This allows the guard to be located closer to the hazard than otherwise possible in applications where the
guard can be opened and the hazard can be accessed. A guard can be a gate, door, cover, panel, barrier, or other physical
means that separates individuals from the hazard. Safety switches will issue a signal to the machine control system to
prevent or stop hazardous situations when the guard is not in the proper position.
The SI-GL42 Interlock Switch is designed for guard locking applications. There are two styles available:
• Spring Lock, Solenoid Unlock (Models SI-GL42DS..)—The actuator is mechanically locked when it is fully inserted
into the actuator head. The actuator is unlocked by applying voltage to the solenoid.
• Solenoid Lock, Spring Unlock (Models SI-GL42DM..)—The fully inserted actuator is locked when voltage is applied
to the solenoid. The actuator is unlocked when voltage is removed from the solenoid.
The SI-GL42 Interlock Switch is a type 2 locking fixture with an electromechanical latching device and low-level coding
according to ISO 14119.
Applications involving the use of the SI-GL42 Series Locking-Style Safety Interlock Switch should take into consideration
the following standards:
• EN ISO 13849-1 Safety-Related Parts of Control Systems
• EN ISO 12100 Safety of Machinery – General Principles for Design — Risk Assessment and Risk Reduction
• ISO 14119 (EN 1088) Interlocking Devices Associated with Guards – Principles for Design and Selection
• ISO 13857 Safety of Machinery – Safety Distances to Prevent Hazard Zones Being Reached
• ANSI B11.0 Safety of Machinery, General Requirements, and Risk Assessment
• ANSI B11.19 Performance Criteria for Safeguarding
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2 Installation Instructions
2.1 Installation Requirements
The following general requirements and considerations apply to the installation of interlocked gates and guards for the
purpose of safeguarding. In addition, the user must refer to the relevant regulations and comply with all necessary
requirements. See ANSI B11.19, or ISO 14119 and ISO 14120, or the appropriate standard.
Hazards guarded by the interlocked guard must be prevented from operating until the guard is closed; a stop command
must be issued to the guarded machine if the guard opens while the hazard is present. Closing the guard must not, by itself,
initiate hazardous motion; a separate procedure must be required to initiate the motion. The safety switches must not be
used as a mechanical or end-of-travel stop.
Locate the guard an adequate distance from the danger zone (so the hazard has time to stop before the guard is opened
sufficiently to provide access to the hazard). The guard must open either laterally or away from the hazard, not into the
safeguarded area. The guard also should not be able to close by itself and activate the interlocking circuitry. The installation
must prevent personnel from reaching over, under, around or through the guard to access the hazard. Any openings in the
guard must not allow access to the hazard—see ANSI B11.19, ISO 13857, or the appropriate standard.
The guard must be strong enough and designed to protect personnel and contain hazards within the guarded area that can
be ejected, dropped, or emitted by the machine. Design and install the safety switches and actuators so that they cannot be
easily defeated. Measures to minimize defeat (bypassing) of interlocking safety switches include:
• Minimizing motivation for defeating interlocking by providing training, supervision, and efficient means for machine
setup/adjustment, operation and maintenance
• Limiting accessibility to the interlocking device, such as mounting out of reach, mounting behind a physical
obstruction, mounting in a concealed position
• Mounting them securely so that their physical position cannot shift, using reliable fasteners that require a tool to
remove.
• Preventing the switch or the actuator from being disassembled or repositioned that compromises the safety
function. (for example, welding, one-way screws, riveting)
Mounting slots in the housing, if provided, are for initial adjustment only; final mounting holes (round) must be used for
permanent location. The switches, actuating systems, and actuators must not be used as a mechanical or end-of-travel
stop.
The normally closed safety contacts are of a "positive-opening" design. Positive-opening operation causes the contacts to
be forced open, without the use of springs, when the actuator is disengaged or moved from its home position. In addition,
the switch(es) must be mounted in a "positive mode", to move/disengage the actuating system and actuator from its home
position and open the normally closed contact, when the guard opens.
See Mechanical Installation on p. 7, Connection to a Machine on p. 13, and Specifications on p. 17.
WARNING:
•Properly Install the Interlocked Guards
• Failure to follow these guidelines could result in serious injury or death.
• At a minimum, the interlocked guard must prevent hazards when not fully closed and must
prevent access to the hazards through any opening in the guard.
• Install the safety switches and actuators so they cannot be easily defeated and are not used as a
mechanical or end-of-travel stop. Mount at least one switch in a positive mode and verify it opens
the normally closed contact when the guard opens.
• The user must refer to the relevant regulations and comply with all necessary requirements. See
ANSI B11.19, or ISO 14119 and ISO 14120, or the appropriate standard.
CAUTION:
•Do not use the safety switch as a mechanical or end-of-travel stop.
• Catastrophic damage can cause the safety switch to fail in an unsafe manner (that is, loss of the
switching action).
• Limit the movement or rotation of the guard to prevent damage to the safety switch or the
actuator.
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WARNING:
•The hazard must be accessible only through the sensing field
• Incorrect system installation could result in serious injury or death.
• The installation of the SI-GL42 Interlock Switch must prevent any individual from reaching
around, under, over or through the defined area and into the hazard without being detected.
• See OSHA CFR 1910.217, ANSI B11.19, and/or ISO 14119, ISO 14120 and ISO 13857 for
information on determining safety distances and safe opening sizes for your guarding device.
Mechanical barriers (for example, hard (fixed) guarding) or supplemental safeguarding might be
required to comply with these requirements.
2.2 Pass-through hazards and Perimeter Guarding
A pass-through hazard is associated with applications where personnel may pass through a safeguard (which issues a stop
command to remove the hazard), and then continues into the guarded area, such as in perimeter guarding. Subsequently,
their presence is no longer detected, and the related danger becomes the unexpected start or restart of the machine while
personnel are within the guarded area.
Eliminate or reduce pass-through hazards whenever possible—see ANSI B11.19 and ANSI B11.20 or ISO 11161. One
method to mitigate the risk is to ensure that once tripped, either the safeguarding device, the safety related part of the
control system, or the guarded machine's MSCs/MPCEs will latch in an OFF condition. The latch must require a deliberate
manual action to reset that is separate from the normal means of machine cycle initiation.
This method relies upon the location of the reset switch as well as safe work practices and procedures to prevent an
unexpected start or restart of the guarded machine. All reset switches must be:
• Outside the guarded area
• Located to allow the switch operator a full, unobstructed view of the entire guarded area while the reset is
performed
• Out of reach from within the guarded area
• Protected against unauthorized or inadvertent operation (such as through the use of rings or guards)
If any areas within the guarded area are not visible from the reset switch, additional safeguarding must be provided.
WARNING:
•Perimeter guarding applications
• Failure to observe this warning could result in serious injury or death.
• Use lockout/tagout procedures per ANSI Z244.1, or use additional safeguarding as described by
ANSI B11.19 safety requirements or other applicable standards if a passthrough hazard cannot
be eliminated or reduced to an acceptable level of risk.
2.3 Mechanical Installation
Important: Install a safety switch in a manner which discourages tampering or defeat. Mount switches to
prevent bypassing of the switching function at the terminal chamber or Quick Disconnect (QD). 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. Fasteners must be of sufficient strength to guard against breakage. Use of
permanent fasteners or locking hardware is recommended to prevent the loosening or displacement of the actuator and the
switch body. The mounting holes (5.3 mm) in the switch body accept M5 (#10) hardware. The mounting holes in the various
actuators accept M4 (#6) (for SI-QM-SSA-2, 4.5 mm) or M5 (#10) (for the other actuators, 5.1 or 5.5 mm).
Mount the sensor and actuator such that the position cannot be changed after installation/adjustment. Mount the switch
securely on a solid, stationary surface. Prevent the loosening of mounting hardware by using lock washers, thread-locking
compound, etc. Only use slots for initial positioning. Pins, dowels, and splines can be used to prevent movement of the
switch and the actuator.
Locate the switch body and actuator to allow access for functional checks, maintenance, service or replacement, and
emergency/escape release (if needed). The installation should provide suitable clearances, be readily accessible, and allow
access to the actuator and sensor.
CAUTION: Do not overtighten the units during installation. Overtightening can twist the housing and
affect the sensor/switch performance.
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Important: It is the responsibility of the machine builder (user) to make sure the wiring/cabling is not easily
manipulated by an operator to defeat the safety function(s); for example, cannot remove a switch from the
system.
Figure 1. Actuator minimum door radius
X
Z
Y
Each actuator style has its own minimum door radius to ensure that its tongue smoothly enters the opening of the head of
the switch.
•SI-QM-SSA-2: 800 mm
•SI-QM-SSA-2RA: 600 mm
•SI-QM-SMFA-3: 400 mm
•SI-QM-SMFA-2: 150 mm
2.3.1 Position the Actuator Head
The actuator head can be rotated in increments of 90° to create eight possible actuator positions (four horizontal and four
vertical positions). Follow these steps to rotate the head.
The actuator can enter the actuator head either horizontally (at a right angle to the switch length) or vertically (in-line with the
switch length). If vertical actuation is required, move the small cover from the opening in the top of the head to the opening
in the side of the head. To rotate the head:
1. Loosen the four screws (TX10) on top of the actuator head.
2. Set the actuator head to the desired direction.
3. Tighten the four screws to 1.6 N·m.
4. Verify the unused actuator slot is closed with the sealing cap.
2.3.2 Install the Switch and Actuator
Follow these steps to mount the switch and actuator.
CAUTION: When ambient temperatures are above 40 °C, the housing temperature may be hot enough to
cause a dangerous situation. Do not allow the housing to come into contact with people or with
flammable material.
1. Verify the mounting surface is flat.
2. Mount the safety switch, tightening the four M5 (#10) screws to 2 N·m.
3. Insert the actuator, in the correct position, into the head of the switch until the actuator molding rests against the
head's housing.
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Figure 2. Actuator position
Actuator moulded part
Actuator fully inserted
into interlock
SI-GL42 Head
0.2 - 2
There is a 2 mm overtravel between the switch head and the actuator. Set the guard's stop in this overtravel region
(overtravel range 0.2–2 mm).
4. Connect the actuator to the guard in a tamper-proof manner.
Figure 3. Actuator dimensions and necessary minimal travel
Screw-on Surface Y
X
p
p
X 29 + 3
Y 29 + 3
Necessary Minimal Travel
When the actuator is withdrawn from the switch's head, the active axis must be aligned in accordance to the
tolerances shown.
5. Verify no lateral forces are occurring between the actuator and the switch head.
Refer to the dimensions drawing to see the fully inserted actuator placement.
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2.3.3 Align the SI-QM-SMFA-2
All measurements are listed in millimeters, unless noted otherwise.
Figure 4. SI-QM-SMFA-2 dimensions
1
2
1. Align and fasten SI-QM-SMFA-2 to the hinged guard as described in Install the Switch and Actuator on p. 8.
2. Loosen one of the small alignment screws (1) (whichever one is easiest to access with the door slightly open) until
the actuator tongue (2) can be swiveled without spring force.
3. Insert the actuator tongue (2) into the mounted switch head until the actuator comes into contact with the head
housing, the spring in the SI-QM-SMFA-2 must not be loaded.
4. Pull the actuator tongue (2) out of the switch head by swinging the guard open 25 mm.
The end of the tongue will still be in the opening of the switch head. The head must still be equipped with an anti-
rotation device.
5. Tighten the small alignment screw (1) to 1.5 N·m.
6. Open and close the guard.
The round shaft of the actuator tongue must only move in the spring bearing (actuator housing). The shaft must not
support itself on the housing and cause an overload of the actuator tongue.
7. Verify the actuator tongue moves into the switch head without colliding with the head. Verify the opposite small
alignment screw (1) was tightened with a torque of 1.5 N·m.
2.3.4 Escape/Emergency/Auxiliary Release Mechanism
CAUTION: Before restarting normal operations, verify the auxiliary/escape/emergency release is in the
locked (protective) position.
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CAUTION: If the escape release mechanism is used, the switch must be mounted within the hazardous
area (must be accessible to an operator inside the hazardous area). The escape release mechanism
should only be used to exit the hazardous area in case of a system failure. The escape release
mechanism must not be accessible from outside of the hazardous area.
Operating the Auxiliary Release Mechanism
The auxiliary release mechanism is part of every switch. It is built into the cover.
Figure 5. Auxiliary release mechanism
Auxiliary
Release
Element
Operate the auxiliary release with only the 4 mm hexagon socket if the latching device fails.
1. Raise the lock screw, TX10, enough so that the element can be turned.
2. Turn the release element 90° with a hexagon wrench (M4, SW4). From to .
The actuator can now be withdrawn. The NC contacts marked with this symbol will open.
3. Turn the release element back to its original position (locked) before restarting normal operation.
4. Screw in the lock screw (0.5 N·m) and seal in place with the screw-locking compound.
To prevent tampering, seal the rear access point (e.g. with locking compound) after installation if it is accessible.
Install the Emergency Release Mechanism
An emergency release mechanism can be installed on the front cover (SI-GL42-ERS-F-1) or on the back of the unit (SI-
GL42-ERS-B-1) depending on how the switch body is mounted.
The emergency release mechanism can be used as an emergency release from outside the danger zone and as an escape
release from inside the danger zone. It is the responsibility of the user to ensure the mounting complies with the
requirements of ISO 14119 or other appropriate standards.
Figure 6. Emergency release mechanism
1. Remove the lock screw.
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2. Place the mechanism onto the cover with the lock and unlock symbols toward the head of the switch and the side
notches positioned over the cover mounting screws.
3. Secure into place with the included mounting screws (torque to 0.5 N·m).
4. Keep the key (flat piece of metal) in a secure location.
The key is needed to reset from the unlocked to the locked position.
Install the emergency release mechanism to the back of the switch body the same as for the cover, except:
• The lock screw does not need to be removed
• The lock, arrow, and unlock symbols should be oriented to match what is on the switch body
Unlock the Emergency Release Mechanism
Follow these steps to unlock the actuator with the emergency release mechanism.
1. Turn the lever element 90° in the clockwise direction.
2. Remove the actuator.
Reset the Emergency Release Mechanism
Resetting the emergency release mechanism back to the locked position requires the key.
Figure 7. Reset the emergency release mechanism
1
2
3
4
1. Turn the lever in the counterclockwise direction to the mounting screw position.
2. While holding the lever in the counterclockwise direction, insert the key in the small slot near the lower mounting
screw. You should feel some resistance.
3. Turn the lever as far as it will go in the counterclockwise direction. The lever should turn to the locked symbol.
4. Remove the key.
If the back-access point is unused and accessible when the switch is installed, seal the back-access point with a locking
compound to prevent tampering.
Installing the Escape Release Mechanism
An Escape Release Mechanism can be mounted on the back of the unit and used as an escape release device for an
operator trapped inside the danger zone.
It is the responsibility of the user to ensure the mounting complies with the requirements of ISO 14119 or other appropriate
standards. To attach the Escape Release Mechanism to the back of the switch:
1. Align the arrow of the release mechanism with the arrow on the back of the switch body.
2. Secure into place with the included mounting screws (torque to 0.5 N·m).
To unlock the actuator with the Escape Release Mechanism, turn the dial 180° clockwise. Remove the actuator.
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To reset the Escape Release Mechanism, turn the dial 180° counterclockwise. The unit is now ready normal operation.
2.4 Access the Wiring Chamber
1. To access the wiring chamber, loosen the top cover's four screws (centered at top, bottom, and on each side) with a
screwdriver (TX 10).
The screws are captive screws and should not come all the way out of the cover.
2. Select the best wiring entrance and, if required, thread in the ½" x 14 NPT conduit adapter (SI-QS-M20, ordered
separately) or an M20 × 1.5 cable gland (SI-QS-CGM20, ordered separately). For more information, see Accessories
on p. 20.
3. Tighten the conduit adapter or cable gland to 6 N·m.
The switch knockout breaks loose with the final turns of the conduit adapter or cable gland.
2.4.1 Wiring the Terminals
The electrical contacts of the switching elements have screw connections. Use a flathead screwdriver to loosen and tighten
the terminals.
See Models on p. 3 for contact assignments. The connections require a stranded flexible wire with ferrule having a cross
section of 0.34 mm2to 1.5 mm2. Strip length should be between 6 mm and 7 mm. Tighten the screws to 0.8 N·m.
When using the locking mechanism for personal protection, use the contacts marked with . Because the locking element
can only go to the engaged position if the actuator is present, this contact signifies the closed position and the locking
status of the guard so it can be checked by the monitoring device of the safety circuit (per ISO 14119).
When using the locking mechanism for process control purposes (only the fact that the door is closed is used for personnel
safety), the contacts marked with the symbol can be used, which signals the status of the actuator (present or not).
For units with pre-installed M12 quick disconnect connections, please refer to the corresponding model addendum for pin
assignments.
2.5 Connection to a Machine
Perform a risk assessment to determine the means of interfacing the switch(es) with the machine control circuit. Although
Banner Engineering always recommends the highest level of safety in any application, it is the responsibility of the user to
safely install, operator and maintain each safety system and comply with all relevant laws and regulations.
To ensure the highest level of reliability (e.g. Control Reliable or Category 4/PL e), we recommend wiring the safety contacts
from two safety switches per interlocked guard in a dual-channel connection to a safety module, safety controller, or other
safety related parts of the control system (see Accessories on p. 20 for a list of safety evaluation devices from Banner
Engineering) that comply with the required level of safety performance as shown.
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Figure 8. Actuator safety contacts (circle with arrow symbol)
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
Actuator
Safety
Contact
Actuator
Safety
Contact
Locking for process
control purposes
Figure 9. Solenoid monitor contacts (lock symbol)
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
Solenoid
Monitor
Contact
Solenoid
Monitor
Contact
Locking for
personnel protection
Refer to the installation instructions provided with the safety module for information about the interface of the safety module
to the machine stop control elements (MSCE).
Two functions of the safety evaluation device are 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.
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• A reset routing after closing the guard and returning the safety 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 B11.0 and NFPA 79 machine safety standards.
Use only positively-driven, normally-closed safety contacts ( or ) from each switch for connection to the safety
module. The normally open contacts may be used for control functions that are not safety related. A typical use is to
communicate with a process controller.
Solenoid voltage connects to terminals E1 (+) and E2 (-).
CAUTION:
•Safety switch installation
• Using only one safety switch per interlock guard is not recommended.
• Use two safety switches for each interlock guard to achieve control reliability or Safety Category
4 (per ISO 13849-1) of a machine stop circuit.
• In addition, normally-closed (N.C.) safety contacts from each of the two safety switches should
be connected to the two separate inputs of a two-channel safety monitoring device. This is
required to monitor 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:
•Connecting safety switches in series
• Monitoring multiple guards with a series connection of multiple safety interlock switches is not a
Safety Category 4 Application (per ISO 13849-1). A single failure can be masked or not detected
at all. The loss of a safety stop signal or an inappropriate reset can lead to serious injury or death.
• When such a configuration is used, procedures must be performed regularly to verify proper
operation of each switch. Correct all failures immediately (for example, immediately replace a
failed switch).
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3 Operating Instructions
3.1 Checkout Procedures
Banner Engineering highly recommends performing the checkouts as described. However, a qualified person (or team)
should evaluate these generic recommendations considering their specific application and determine the appropriate
frequency of checkouts. This will generally be determined by a risk assessment, such as the one contained in ANSI B11.0.
The result of the risk assessment will drive the frequency and content of the periodic checkout procedures and must be
followed.
WARNING:
•Test multiple safety devices individually
• Failure to test each safety device individually could result in undetected faults and create an
unsafe condition that could result in serious injury or death.
• When two or more safety devices are used, individually actuate each device, causing a stop or
open-contact condition, then reset/rearm the safety module (if using manual reset mode). This
allows the monitoring circuits to check each device and its wiring to detect faults.
3.1.1 Initial and Daily Checks
Verify the functioning of the safety switch(es) and the interlocked guard (if applicable) at designated periods. Verify at initial
installation by a qualified person , verify daily or before each use by a designated person , and as part of the regular periodic
checkout procedure listed below to ensure proper operation.
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. A
designated person is identified in writing by the employer
as being appropriately trained to perform a specified checkout procedure.
1. Inspect for breakage of the switch body or actuator
2. Verify good alignment and full engagement of the actuator
3. Confirmation that the safety switch is not being used as an end stop
4. Inspect for loosening, corrosion, or damage to the mounting hardware of the switch body and actuator
5. Verify that it is not possible to reach any hazard point through an opened guard (or any opening) before hazardous
machine motion has completely stopped
6. Verify switch(es) operation per specific application. For example, the machine cycle stops and/or can not be initiated
when the actuator is removed from the switch body.
7. If more than one safety switch(es) and the interlocked guard is used, perform this procedure individually for EACH
device.
3.1.2 Periodic Checks
A qualified person (as defined above) 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. At a minimum, this should take
place once a year (lockout/tagout procedures for controlling hazardous energy may be required):
1. Inspect the wiring chamber for signs of contamination, deterioration, loose connections, or damage
2. Inspect the sealing at the cable entry and all electrical wiring for continuity and damage
3. Verify that wiring and installation conforms to the instructions in this document and that there are no signs of
tampering or defeat
4. Perform the initial/daily checkout listed above
See also the machine manufacturer's recommendations for additional instructions. If any of these checks cannot be
verified, do not attempt to use the machine until the defect or problem has been corrected.
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4 Specifications
Electrical Protection Class
II, totally/double insulated
Solenoid
Duty Cycle: 100% ED (to E1/E2)
Temperature Class: F (155 °C)
Operating Voltage: 24 V AC/DC
Permanent Power Consumption: 24 V AC/DC; 6.7 VA (W)
Operating Cycles, permanent: 10/min
Switching Contacts
Direct/Positive Opening Action ( ) per IEC 60947-5-1, Annex K
Short Circuit Protective Device: 4 A gG (2 A gG with M12 QD) (gG is a
full range breaking capacity fast acting fuse)
Rated Conditional Short-Circuit Current: 400 A (400 A with m12 QD)
Switching Contacts Contact Rating
Insulation voltage Ui: 250 V (30 V with M12 QD)
Impulse withstand voltage Uimp: 2.5 kV (0.8 kV with M12 QD)
Operating voltage Ue: 240 V AC/24 V AC/DC (24 V AC/DC with M12 QD)
Conventional thermal current Ithe: 5 A (2 A with M12 QD)
Switching Contacts Use Category
Per IEC: AC-15, Ue/Ie240 V/1.5 A
Per IEC: DC-13, Ue/Ie24 V/1.5 A; 250 V/0.11 A (DC-13, Ue/Ie24 V/1.5 A
with M12 QD)
Per UL/CSA: B300/R300 (same polarity) (30 V/2 A general use with M12
QD)
Construction
Glass fiber-reinformed polyamide thermoplastic (UL94-V0) enclosure
and cover
Glass fiber-reinformed polyamide thermoplastic (UL94-V0) and zinc
diecast actuating device
Maximum Approach Speed (Vmax)
0.5 m/s (19.7 in/s)
Switching Principle
Four slow-action contacts
Mechanical Life
1 × 106switching cycles
B10d
2 × 106cycles
Connections
10 Screw terminals
0.34–1.5 mm2flexible (stranded) wire with ferrule (16 AWG max)
M20 × 1.5 threaded entrance (×3 ports)
Unlocked Extraction Force
≤ 10 N
Locked Holding Force (FZh)
1500 N (337 lbf) (per ISO 14119)
Minimum Actuating Radius
SI-QM-SSA-2: 800 mm
SI-QM-SSA-2RA: 600 mm
SI-QM-SMFA-3: 400 mm
SI-QM-SMFA-2: 150 mm
Operating Conditions
Ambient Air Temperature: –25 °C to +55 °C (–13 °F to +131 °F)
Environmental Rating
IEC IP67 (per EN IEC 60529)
Indoor use only Type 6 (per UL 50 E/CSA C22.2)
Applicable Standards
IEC 60947-5-1
UL 508 (18th edition), CSA=C22.2 No. 14-18
GS-ET-19 (DGUV)
EN ISO 14119
EN ISO 13849-1
Certifications
4.1 Dimensions
All measurements are listed in millimeters, unless noted otherwise.
Figure 10. SI-GL42 dimensions
Y
X
p
p
M12 Plug
Screw-on Surface
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Figure 11. SI-QM-SMFA-2 dimensions
1
2
Figure 12. SI-QM-SMFA-3 dimensions
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Figure 13. SI-QM-SSA-2 dimensions
Figure 14. SI-QM-SSA-2RA dimensions
SI-GL42 Series Locking-Style Safety Interlock Switch
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5 Accessories
5.1 Actuators and Unlock Mechanisms
Model Type Description Minimum Approach
Radius
SI-QM-SSA-2
Actuator
Straight Actuator 800 mm
SI-QM-SSA-2RA Rigid Flat Mount Actuator (90° mounting) 600 mm
SI-QM-SMFA-2 Fully Flexible Actuator 150 mm
SI-QM-SMFA-3 Slightly vertical/horizontal offset Actuator 400 mm
SI-GL42-ERS-F-1
Unlock Mechanism
Front Mount Emergency Release Lever
SI-GL42-ERS-B-1 Back Mount Emergency Release Lever
SI-GL42-ERBD-B-1 Back Mount Escape Release Mechanism
SI-GL42-EM20-1 20 mm Extension for Escape Release Mechanism
SI-GL42-EM40-1 40 mm Extension for Escape Release Mechanism
5.2 Plastic Conduit Adapter
Model Size Thread Conversion Dimensions Used With
SI-QS-M20 ½ in-14 NPT Plastic M20 × 1.5 to ½ in-14
NPT
25.0 mm
(0.98")
M20 x 1.5
24.0 mm
(0.94")
1/2"-14 NPT
Internal Thread
SI-GL42 Safety Interlock Switch
SI-LS31 Safety Interlock Switch
SI-LS42 Safety Interlock Switch
SI-LS100 Safety Interlock Switch
SI-QS90 Safety Interlock Switch
RP-LS42 Rope Pull Switch
5.3 Cable Glands
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 inches)
M20 x 1.5
25.0 mm
(0.98")
37.0 mm
(1.46")
RP-LS42 Rope Pull Switch
SI-GL42 Safety Interlock Switch
SI-LS31 Safety Interlock Switch
SI-LS42 Safety Interlock Switch
SI-LS100 Safety Interlock Switch
SI-QS90 Safety Interlock Switch
5.4 Universal (Input) Safety Modules
Safety modules provide forced-guided, mechanically-linked relay (safety) outputs for the system when an external manual
reset (latch) is desired or external device monitoring is required in the application. See datasheet p/n 141249 or 60606 for
more information.
Model Description
UM-FA-9A 3 Normally Open (NO) Redundant-output 6 A Contacts
UM-FA-11A 2 Normally Open (NO) Redundant-output 7 A Contacts, plus 1 Normally Closed (NC) Auxiliary Contact
ES-FA-9AA 3 Normally Open (NO) Redundant-output 6 A Contacts
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