Safety Interlock Switches
TL8012-S
• High locking force of 2000 N (450 lb.)—locks guard door shut
until machine is safe to enter
• NEMA 6 enclosure enables the TL8012-S to withstand water
washdown cleaning
• Door and lock monitoring—the TL8012-S has a total of 5
contacts: 2 N/C safety + 1 N/O for door position monitoring plus
1 N/C + 1 N/O for lock monitoring
• Lid-mounted status light is on when solenoid is energized,
indicating that solenoid has unlocked the guard door
• Rotatable head—the rotatable head of the TL8012-S provides 4
actuator entry positions to satisfy most installation requirements
• Optional key release—this option on power-to-unlock models
allows emergency manual unlocking of the
guard door
• Long life—the TL8012, with its variety of stainless steel actua-
tors and stainless steel guide, is designed for a minimum of
one million actuations.
TL8012
For full product information, visit www.sti.com. Use the SpeedSpec Code or scan the QR Code for quick access to the specific web page.
Versatile Safety Interlock Switch with Guard Door Locking
Rev. 3.11
R
C
US
Conforms to EN1088, EN60947-5-1,
EN292, EN60204-1
UL and C-UL listed
G
Specifications
Electrical
All Models
TL8012-S1 & -S2
TL8012-S3
Contact Configurations:
3 N/C + 2 N/O
4 N/C + 1 N/O
Safety Contacts:
3 N/C positive break
4 N/C positive break
Switching Ability
AC:
500 V–1 A, 250 V–2 A, 100 V–5 A
DC:
250 V–0.5 A, 24 V–2 A
Safety Contact Gap:
> 2 mm (0.079 in.)
Auxiliary Contacts:
2 N/O (1 solenoid monitoring) 1 N/O
Max Switching Current/Volt/Amp:
500 V/500 VA
Minimum Current:
5 V 5 mA DC
Electrical Life:
1 x 106 minimum
Solenoid Supply Voltage:
24 VDC or 24 VAC/DC or 110 VAC or 220 VAC
Solenoid Power:
7 W, approx. 900 mA inrush
Solenoid Rating:
100% duty
Mechanical
Mounting:
Any position
Mounting Hardware:
4 x M5 screws
Actuator Travel for Positive Opening: 7 mm (0.276 in.)
Min Operating Radius:
Approximately 80 mm (3.25 in.) with flex actuator Approximately 175 mm (7 in.) with standard actuator
Max Holding Force:
2000 N (450 lb.)
Max Actuation Speed:
160 mm/sec (6.3 in./sec)
Max Activation Frequency:
1 cycle/sec
Case Material:
UL listed, glass-filled polyester
Actuator Material:
Stainless steel
Wiring Entry:
3 x M20 conduit with 0.5 in. NPT adapter
Weight:
400 g (14 oz.)
Color:
Red
Mechanical Life:
1 x 10
6
minimum
Environmental
Protection:
IP67 (NEMA 6)
Operating Temperature:
-20 to 60°C (-4 to 176°F)
Cleaning:
Water washdown
Compliance
Standards:
EN1088, EN60947-5-1, EN292, EN60204-1
Approvals/Listings:
CE marked for all applicable directives, UL and C-UL
Specifications are subject to change without notice.
Note: The safety contacts of the STI switches are described as normally closed (N/C) —
i.e., with the guard closed, actuator in place, and the machine able to be started.
www.sti.com/info
G81
TL8012-S
Safety Interlock Switches
Operation
Actuator Alignment Guide
TL8012
Actuator alignment guide, easily
replaced if damaged, provides an ideal
letter box feature for mounting the switch
behind a fixed panel.
A
B
C
1
2
D
2
The head rotates 180° to give 4 possible actuator
entry points.
Blanking plug
for unused
entry.
1
G
A distance of 3.0 mm or less is required
between face of switch and face of actuator
for switch to lock.
Locking force = 450 lbs (2000 N) maximum
Optional SLD Series
NEW!
Optional Key Release Version
The TL8012-S is available with a key
to provide emergency override of the
switch locking mechanism by a qualified,
responsible person.
Optional Flat Actuator
Allows mounting to flat surfaces.
Flexible rubber mounting bushings also
allow for some actuator
flexibility.
Optional switch locking devices are
available. See accessories section for
details.
Optional Flexible 1 Actuator
15° flexibility in any direction. The actuator
has 2 set screws for altering and locking
adjustable angle.
G82
www.sti.com/info
CONTROL UNIT
CONTROL UNIT
CONTROL UNIT
Operation (continued)
Contact Arrangements
AC/DC A2 A1
34
100% ED.
53 22
54
42
41 12
Ferrocode Sensor
Ferrocode Sensor
Ferrotek
Ferrotek
Ferrocode
Ferrocode
Sentinel 1
Sentinel 1
Sentinel 4+
TL8012 -1 & -2
TL8012-1
AC/DC A2 A1
AC/DC A2 A1
34
33
34
100% ED. 33
100% ED.
21 51 22
53 22 52
54 21
11
42 11
42
41 12
41 12
TL8012 -3
AC/DC A2 A1
A1
AC/DC
34
100% ED. 33
100% ED.
51 22
52 21
3
42 11
41 12
A2
33
21
11
7
9 10
A1 A2
AC/DC
8
100% ED.
3 4
9 10
AC/DC
7
100% ED.
3
A1 A2
8
4
9 10
7
A1 A2
AC/DC
8
100% ED.
3 4
7
9 10
8
4
or
Titan TLS 1 & 2
TL8012-2
0.26 0.12
6.6 3 0
0.79
20
0.79
20
Titan TLS 1 & 2
0.26 0.12
6.6 3 0
Titan TLS 3
TL8012-3
CLOSED WHEN
POWER ON
OPEN WHEN
POWER ON
Titan TLS 3
0.79
20
0.26 0.12
6.6 3 0
Atlas 4
Atlas 4
Atlas 4 trapped key
Atlas 4 trapped key
Centurion
41/42
11/12
21/22
33/34
53/54
CLOSED WHEN POWER ON
or
41/42
11/12
21/22
33/34
53/54
or
Lifeline 1
41/42
51/52
33/34
11/12
21/22
Minimum Operating Radius
Front-Entry (Std. & Flat Actuators)
)
.89 (175
MIN.R
6
Minimum Operating Radius
End-Entry (Std. & Flat Actuators)
)
.89 (175
MIN.R
6
Contact Open
Contact Closed
Lifeline 1
Contact Open
Contact Closed
Lifeline 2
Contact Open
Lifeline 2
Contact Closed
Lifeline 4
Flexible Actuator
>
MIN.R -
3.15 (80)
Lifeline 4
Protekta
Flexible Actuator
>
MIN.R - 3.15
(80)
Protekta
Telescopic
CU1
CU1
CU2
CU2
MSR5T
MSR5T
MSR6R/T
MSR6R/T
MSR7R
Applications
Typical applications are on sliding guard
doors and swinging guard doors that must
remain locked until a signal is applied to
MSR7C
MSR7C
the internal solenoid that unlocks the guard
door.
AC/DC A1 A2
100% ED.
7
21
9 10
AC/DC A1 A2
100% ED. 8
22
3 4
7
21
9 10
GS1 & GS2
G
MSR9T
MSR9T
MSR10 RD
MSR10 RD
MSR8T
MSR8T
Ferrogard GS1/GS2
C10
24V DC
3
8
22
4
Atlas 4 (3 pole)
START
Atlas 4 (3 pole)
MSR11R & 12T
MSR11R & 12T
MSR14T
MSR14T
MSR15D
BUTTON 1
BUTTON 2
BUTTON 1
K2
LOCK
RELEASE
MOMENTARY
PUSH
BUTTON
K2
E-STOP
BUTTON 2
K1
E-STOP
MOMENTARY
PUSH
BUTTON
K1
or
L2 L3
Trojan
MOMENTARY
PUSH
BUTTON
AUXILIARY CIRCUIT
(LOCK STATUS INDICATION)
Trojan
AUXILIARY CIRCUIT
(CONTACT STATUS INDICATION)
L1
Protekta 2 hand control Protekta 2 hand control
Rotacam 3pole
Rotacam 3pole
Centurion 3pole
Centurion 3pole
Spartan
STOP
GUARD
CLOSED
A1
A2
FUSES
42
41
12
CONTACT
PROTECTION
E.G. THERMAL CUT OUT
54
53
TL8012-S 24V
K1
K2
22
34
11
21
33
E-STOP
LATCHING
E-STOP BUTTON
M
K1
K2
www.sti.com/info
G83
AUXILIARY
SENSOR
SENSOR
SENSOR
SENSOR
TL8012-S
CONTROL UNIT
Safety Interlock Switches
SAFETY
TL8012-S
Safety Interlock Switches
Applications (continued)
24 VAC/DC, 110 VAC, 230 VAC
LOCK RELEASE
MOMENTARY
PUSH
BUTTON
L1 L2 L3
K1
(AUX)
START
K2
(AUX)
(AUX)
FUSES
MOMENTARY
PUSH
BUTTON
K1(a)
(AUX)
K1
K2
K1(a)
(AUX)
STOP
K2(a)
(AUX)
MOMENTARY
PUSH
BUTTON
(AUX)
K2(a)
(AUX)
GUARD
CLOSED
A1
A2
42
54
TL8012-S1
34
A1S13 S23 X1 41 13 23 33
A1 N P N X1 13 23 31
SET TO
D
CHANNEL
SR06AM
SMD02
LINK
41
53
12 22
CONTACT
PROTECTION
E.G. THERMAL
CUT OUT
G
11
21
33
SET TO
T
MODE
A2 S14 S24 X2 42 14 24 34
A2 P N P X2 14 24 32
EB SERIES
LATCHING
E-STOP
BUTTON
NPN
FUSES
INDUCTIVE
SENSOR
M
INDUCTIVE
SENSOR
PNP
K1
K2
INDICATION BULB
SHOWS STOPPED MOTION
✎
For a full explanation of the circuit operating principle and fault detection, see
“Common Circuit Examples” in the Expert Area Section on www.sti.com..
Application Monitoring Units
Used with the TL4024 for machines with
constant overrun. Gives a timed delay to the
lock/release signal. Failsafe and adjustable
to a range of times from 1.0 seconds up to 31
seconds.
SR223SMT Timer Unit
SR125SMS Stop Motion
Sensing Unit
Safety Monitoring Relay Units
Used with the TL4024 for machines with
inconstant or variable overrun. Senses back EMF
of AC or DC motors. Failsafe and adjustable to a
range of 0.01 V to 0.10 V.
Safety monitoring relays ensure a maximum level
of safety by monitoring all wiring in the safety
circuit, including switches and contactors. Any
fault and the power to the machine is switched
off. A variety of safety monitoring relay units are
available.
✎
For information on the SR223SMT,
see www.sti.com
✎
For information on the SR125SMS,
see www.sti.com
information
✎
For Relays, see on Safety Monitor-
ing
www.sti.com
G84
www.sti.com/info
TL8012-S
Safety Interlock Switches
Dimensions
43
1.69
6
0.24
SWITCH
(mm/in.)
126
4.96
105
4.13
Optional
key release
5 25.5
0.2 1.0
14
0.55
14
0.55
33
1.3
37
1.46
6.5
0.26
6.5
9
M5
0.26
5
0.35
0.2
27
1.06
22
0.87
17
0.67
21
0.83
2 x M5
15
0.6
21
0.83
17
0.67
5.5
0.22
20.5
0.81
5
0.2
3
0.12
57
2.24
73
2.87
86
3.39
3
0.12
6.5
0.26
52.5
2.07
67.5
2.66
30
1.18
60.5
2.38
4
0.16
G
Flat Actuator
Standard Actuator
Flexible 1 Actuator
40
1.57
6.8
0.27
4 x
Ø5.5
0.22
2 x M3
3.5
0.14
M4
36 20
1.42 0.8
52
2.05
25
0.98
57
2.24
17.5
0.69
40
1.57
4
0.16
18
0.71
36
1.42
52
2.05
31
1.22
Adjusting
screws
14.5
0.57
M5 CSK
8
20 0.31
0.79
19
0.75
13
0.51
51
2.01
18
0.71
10
0.4
8
0.315
3.5
0.14
www.sti.com/info
G85
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