safety interlock switches
G
For the Latest Information
On the Internet: www.sti.com or www.omron.ca
OMRON SCIENTIFIC TECHNOLOGIES, INC.
USA Tel. 1/888/510-4357 Canada Tel. 1/866/986-6766
AGo to the Engineering Guide
For in-depth information on
safety standards and use.
G92
NFor More Guarding Products
See Section N for safeguarding
cutting and turning machines
■ Dual channel, fully monitored
system; meets Category 3 when
single MC-S Series switch and
control unit are used; MC-S6
meets Category 4
■ External Device Monitoring
(EDM) with automatic or
manual reset
■ NEMA 6 switch enclosures
in plastic or stainless steel
with connector satisfy most
application requirements
■ Magnetically coded switches
are tamper resistant to common
magnets
■ Misalignment tolerance of
(5 and 9 mm) reduces nuisance
tripping
■ A large number of switches may
be used with a MC-S Series
control unit
■ MC-S6 control unit provides
individual monitoring and
indication for up to 6 switches
and a N/O delayed output
■ Mechanical interlock switches
may be used with a MC-S Series
control
■ MC-S Series controls may
replace a safety relay in some
applications
■ Auxiliary contacts available
for individual guard door
monitoring on MC-S switches
Conforms to EN954-1, EN1088, EN60204-1
UL and C-UL listed
MC-S Series
■ Description
The MC-S Series is a tamper re-
sistant non-contact safety interlock
switch that operates with its own
control unit. As a fully monitored
dual channel system, a single
MC-S Series switch and MC-S
Series control units 1 or 2 combine
to fulfill Category 3 requirements.
Control Unit 6 with 2 to 6 MC-S
switches fulfills Category 4 require-
ments for the 3 N/O outputs and
Category 3 for the N/O delayed
output.
The MC-S Series control units
provide EDM (External Device
Monitoring, also called MPCE
monitoring) with an automatic or
manual reset. This allows the MC-
S Series control units to replace a
safety relay in some applications.
The NEMA 6 encapsulated design
of the MC-S Series switch makes it
ideal for harsh environments.
The MC-S Series control units
can be used with a large number
of MC-S Series switches for
applications with multiple guard
doors. The MC-S6 control unit
provides individual monitoring
and LED indication for up to six
MC-S Series switches. Mechani-
cal switches and MC-S Series
switches may be used together
with a single MC-S Series control
unit for applications requiring
both non-contact and mechanical
safety interlock switches.
Compact Coded Magnetic Safety Interlock Switch
and Control Unit
MC-S Series
R
C US
safety interlock switches
G
For the Latest Information
On the Internet: www.sti.com or www.omron.ca
OMRON SCIENTIFIC TECHNOLOGIES, INC.
USA Tel. 1/888/510-4357 Canada Tel. 1/866/986-6766
G93
IP 67
MADE IN EC
MC S Series
Operating Principle
On presenting the actuator to the
switch, the coded, high intensity
magnetic field from the actuator
causes the contacts to close. On
removing the actuator (opening the
door), the safety contacts open,
isolating the machine.
■ Operation
Contact Arrangements
Mounting Examples
Type 2 Sensor
■ Actual Size
Type 1 Sensor
.98 in.
25 mm
1.89 in.
48 mm
Operation: target face to target face
Guard Stops
Recommended gap between sensor and actuator.
NOTE: ACTUATOR MUST NOT STRIKE SENSOR
min 1mm
max 3mm - type 1 & 3
max 4mm - type 2
Misalignment Tolerance (when mounted
on non- ferrous materials).
5
0mm
Face to face
distance (mm)
Misalignment
tolerance (mm)
3
Type 1 & 3
Type 2
4
9
Connector Configurations
MC-SS2 Stainless Steel MC-S3
MC-S
8-Pin Male,
Micro DC, M12
Auxiliary Circuit - not for safety use (N/O or N/C)
N/C
Green (ground)
N/O
M12
Black White
Blue Red
Grey
Yellow
4-Pin Male,
Micro DC, M12
M12
Auxiliary
Circuit (N/O)
Safety Circuit 1 (N/C)
3433
12 11
3 4
2 1
MC-S Series
Universal Mounting Brackets can be used
with this product. See page G241 for details.
✎
safety interlock switches
G
For the Latest Information
On the Internet: www.sti.com or www.omron.ca
OMRON SCIENTIFIC TECHNOLOGIES, INC.
USA Tel. 1/888/510-4357 Canada Tel. 1/866/986-6766
AGo to the Engineering Guide
For in-depth information on
safety standards and use.
G94
NFor More Guarding Products
See Section N for safeguarding
cutting and turning machines
■ Applications
Typical applications are on slid-
ing guard doors or swinging guard
doors.
Single sensor and two contactors with manual reset and EDM (External Device Monitoring). Machine will start when guard is closed, auxiliary contacts at
K1 and K2 are closed (i.e. both contactors are off), reset button is pressed and then start button is pressed.
Three sensors and two contactors with manual reset and EDM (External Device Monitoring). Machine will start
when all guards are closed, reset button is pressed and then start button is pressed. NOTE: The use of multiple
sensors connected to a single control unit is only suitable in applications where each guard door is always
opened and then shut individually. Otherwise some single faults may not be detected and unintentional lockout
reset may occur if two or more guard doors are open at the same time.
Guard
Closed
MC-S
Actuator
MC-S
Sensor
White
Black Auxiliary Contacts
for Indication - N/C or N/O
Blue
Yellow
Green
Red
MC-SS2
Actuator
MC-SS2
Sensor
White
Black Auxiliary Contacts
for Indication - N/C or N/O
Blue
Yellow
Gray
Red
Green
MC-S Series
Actuator
MC-S Series
Sensor
Yellow
Green
Green
Red
Blue
Yellow
RESET
Momentary
Push Button
K1 K2
Fuse
Fuse
2
3
1
4
A1
A2
+
-
33 23 21
X1 X2 32 14 24
MC-S2 Series
Control
Unit
K1 (Aux)
K2 (Aux)
START
Momentary
Push Button
STOP
Momentary
Push Button
K1 (Aux)
K2 (Aux)
M
CONTACT
PROTECTION
E.G. Thermal
Cut Out
K2
L1 L2 L3
K1
24 VAC/DC
1 2 3 4
MC-S
Control Unit
1 2 3 4
MC-S
Control Unit
MC-S Series
Actuator 1
MC-S Series
Sensor 1
MC-S Series
Actuator 2
MC-S Series
Sensor 2
MC-S Series
Actuator 3
MC-S Series
Sensor 3
Yellow
Green
Yellow
Green
Yellow
Green Green
Red
Blue
Yellow
Blue Red Blue Red
Guard
Closed
Guard
Closed
Guard
Closed
RESET
Momentary
Push Button
K1 K2
Fuse
Fuse
2
3
1
4
A1
A2
+
-
31 13 23
X1 X2 32 14 24
MC-S2 Series
Control
Unit
K1 (Aux)
K2 (Aux)
M
L1 L2 L3
CONTACT
PROTECTION
E.G. Thermal
Cut Out
K1
M
L1 L2 L3
K2
START
Momentary
Push Button
STOP
Momentary
Push Button
K1 (Aux)
K2 (Aux)
24 VAC/DC
MC-S Series
safety interlock switches
G
For the Latest Information
On the Internet: www.sti.com or www.omron.ca
OMRON SCIENTIFIC TECHNOLOGIES, INC.
USA Tel. 1/888/510-4357 Canada Tel. 1/866/986-6766
G95
■ Specifications
Electrical MC-S Series Control Units MC-S Series Switches
Power Supply: 24 VAC/DC ± 10% - Control 1 —
24 VDC ± 10% or 24/110/220 VAC - Control 2 & 6
Power Consumption: < 2 VA Control 1; < 4 VA - Control 2 & 6 —
Safety Inputs: 1 N/O + 1 N/C for controls 1 & 2 (x6 for Control 6) —
Max Input Resistance: Red/Blue - 200 Ω; Green/Yellow - 150 Ω —
Min. Approach Speed: Typically 10-17 mm/sec.
Safety Contacts: — 1 N/C + 1 N/O
Auxiliary Contacts: — 1 N/C or 1 N/O
Auxiliary Contact Rating: — 100 mA, 24 VDC and 230 VAC
Relay Outputs: 1 N/O + 1 Semi Aux. - Control 1 Control 6 Delayed Output (0.6-30 s)
2 N/O + 1 N/C Aux. - Control 2 3 N/O + 1 N/O Delayed, 1 N/C Aux. - Control 6
Auxiliary Contact of Controls: 100 mA, 24 VDC and 230 VAC - Control 1 —
2 A, 24 VDC and 230 VAC - Control 2 and 6
N/C Operating Distance: — On = 5 mm; Off = 11 mm Type 1 and Type 3
On = 9 mm; Off = 12 mm Type 2
On = 10 mm; Off = 13 mm Type 2 stainless
Max Switched AC: 4 A/250 VAC 100 mA/230 VAC
Max Switched DC: 2 A/30 VDC 100 mA/24 VDC
Min Switched Current/Voltage: 10 mA/10 V AC/DC —
Impulse Withstand Voltage: 2500 V —
Max Drop-Out Time: 25 m/sec —
Max Output Fuse: 5 A quick acting on AC, 3 A quick acting on DC —
(3 A quick acting on AC/DC control 6)
Reset Mode: Automatic/Manual —
External Device Monitoring: N/C loop between x1 and x2 —
Mechanical
Mounting: 35 mm (1.38 in.) DIN Rail 4 x M4 screws, M18 x 1 mm pitch for MC-S3
Case Material: Polycarbonate ABS plastic - Type 1 & 2; nylon - Type 3;
stainless steel - Type 2 stainless
Max Wire Size: 2 x 1 mm (20 AWG) stranded Pre-wired cable to 10 m MC-S1, S2,
2 x 1.5 mm (15 AWG) solid Connector MC-SS2, MC-S3
Weight: 147 g (5.2 oz.) - Control 1, 590 g (21 oz.) - Control 2, 100 g (3.5 oz.) plastic, 600 g (1-lb. 5-oz.) steel
990 g (35 oz.) - Control 6
Color: Red Red or Stainless steel
Indication: LED 1: Green = Output Closed —
LED 2: Red = Power On Controls 1 & 2 —
LED 2: Green = Power on Control 6
Mechanical Life: 1 x 106 1 x 106
Environmental
Protection: IP40 (NEMA 1) IP67 (NEMA 6); (IP68 for stainless)
Operating Temperature: -10 to 55°C (14 to 131°F) -10 to 55°C (14 to 131°F) Plastic
-25 to 125°C (-13 to 257°F) Stainless
Humidity: 90% RH at 50°C (122°F) 90% RH at 50°C (122°F)
Compliance
Standards: EN954-1, EN1088, 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 Omron 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.
MC-S Series
safety interlock switches
G
For the Latest Information
On the Internet: www.sti.com or www.omron.ca
OMRON SCIENTIFIC TECHNOLOGIES, INC.
USA Tel. 1/888/510-4357 Canada Tel. 1/866/986-6766
AGo to the Engineering Guide
For in-depth information on
safety standards and use.
G96
NFor More Guarding Products
See Section N for safeguarding
cutting and turning machines
■ Dimensions — mm/in.
7
0.28
4.2
0.17 ACTUATOR
=
DIN rail
Mounting
FERROTEK CONTROL UNIT
SWITCH
=
7
7
FERROTEK REMOTE
INDICATOR UNIT
LED's
4.5
0.18
7
0.28
9
0.35
4.5
0.18
7
0.28
68
2.68
7
0.28
4.5
0.18
5
0.2 5
0.2
19
0.75
19
0.75
4.5
0.18
7
0.28 19
0.75
19
0.75
99
3.9
22.5
0.89
82
3.23
75
2.95
35
1.38
69
2.72
50
1.97
57
2.24
38
1.5
36
1.42
=
=
=
82
3.23
82
3.23
68
2.68
73
2.87
82
3.23
=
82
3.23
73
2.87
4.5
0.18
Control Unit 1
7
0.28
4.2
0.17 ACTUATOR
=
DIN rail
Mounting
FERROTEK CONTROL UNIT
SWITCH
=
7
7
FERROTEK REMOTE
INDICATOR UNIT
LED's
4.5
0.18
7
0.28
9
0.35
4.5
0.18
7
0.28
68
2.68
7
0.28
4.5
0.18
5
0.2 5
0.2
19
0.75
19
0.75
4.5
0.18
7
0.28 19
0.75
19
0.75
99
3.9
22.5
0.89
82
3.23
75
2.95
35
1.38
69
2.72
50
1.97
57
2.24
38
1.5
36
1.42
=
=
=
82
3.23
82
3.23
68
2.68
73
2.87
82
3.23
=
82
3.23
73
2.87
4.5
0.18
7
0.28
4.2
0.17 ACTUATOR
=
DIN rail
Mounting
FERROTEK CONTROL UNIT
SWITCH
=
7
7
FERROTEK REMOTE
INDICATOR UNIT
LED's
4.5
0.18
7
0.28
9
0.35
4.5
0.18
7
0.28
68
2.68
7
0.28
4.5
0.18
5
0.2 5
0.2
19
0.75
19
0.75
4.5
0.18
7
0.28 19
0.75
19
0.75
99
3.9
22.5
0.89
82
3.23
75
2.95
35
1.38
69
2.72
50
1.97
57
2.24
38
1.5
36
1.42
=
=
=
82
3.23
82
3.23
68
2.68
73
2.87
82
3.23
=
82
3.23
73
2.87
4.5
0.18
Switch - Type 2
4.8
0.19
48
1.89
22
0.87
13
0.51
24
0.94
24
0.94
48
1.89
22
0.87
13
0.51
24
0.94
4.2
0.17
M4
6.0
0.24 12
0.47
25
0.98
25
0.98
12
0.47
M4 4.8
0.19
Switch - Type 1 Actuator - Type 1
Actuator - Type 2
45.5
1.79
120
4.72
73
2.87
35
1.38
Din Rail
Mounting
Control Unit 2
Switch - Type 3
Actuator - Type 3
10
0.39
Ø30
1.18
Ø5.1
0.20
60
2.36 49
1.93
M18 x 1
33.5
1.32
4.4
0.17
62.5
2.46
62.5
2.36
5
0.2
5
0.20
78.5
3.1
16
0.63
5
0.2
19.5
0.77
4.4
0.17
16
0.63
5
0.2
33.5
1.32
78.5
3.1
19.5
0.77
16.8
0.66
16.8
0.66
7
0.28
7
0.28
8
0.31
8
0.31
39.3
1.55
39.3
1.55
16.8
0.66
16.8
0.66
7
0.28 7
0.28
39.3
1.55
39.3
1.55
Switch - Type 2 Actuator - Type 2
Stainless steel Stainless steel
Control Unit 6
118
4.65
90
3.54
84
3.31
10
0.39
Ø30
1.18
Ø5.1
0.20
60
2.36 49
1.93
M18 x 1
MC-S Series
safety interlock switches
G
For the Latest Information
On the Internet: www.sti.com or www.omron.ca
OMRON SCIENTIFIC TECHNOLOGIES, INC.
USA Tel. 1/888/510-4357 Canada Tel. 1/866/986-6766
G97
Model Contacts Wiring Entry Part No.
CONTROL UNITS
Unit 1
MC-S1 Control (24VAC/DC) (1 switch input) 1 N/O + 1 N/C Semi Aux. 44531-0010
Unit 2
MC-S2 Control (24VAC/DC + 110/220VAC) (1 switch input) 2 N/O + 1 N/C Aux. 44531-0020
Unit 6
MC-S6 Control (24VAC/DC + 110/220VAC) (6 switch inputs) 3 N/O + 1 N/O Delayed, 1 N/C Aux. 44531-0040
PLASTIC CASE SWITCHES
Type 1
MC-S1PC3 Switch & Actuator 1 N/C + 1 N/O 3 m cable 44531-0100
MC-S1PC10 Switch & Actuator 1 N/C + 1 N/O 10 m cable 44531-0110
MC-S1XCPC3 Switch & Actuator w/ signal contacts 2 N/C + 1 N/O (N/C Aux. Contact) 3 m cable 44531-0150
MC-S1XOPC3 Switch & Actuator w/ signal contacts 1 N/C + 2 N/O (N/O Aux. Contact) 3 m cable 44531-0155
MC-S1XCPC10 Switch & Actuator w/ signal contacts 2 N/C + 1 N/O (N/C Aux. Contact) 10 m cable 44531-0160
MC-S1XOPC10 Switch & Actuator w/signal contacts 1 N/C + 2 N/O (N/O Aux. Contact) 10 m cable 44531-0165
Type 2
MC-S2PC3 Switch & Actuator 1 N/C + 1 N/O 3 m cable 44531-0200
MC-S2PC10 Switch & Actuator 1 N/C + 1 N/O 10 m cable 44531-0210
MC-S2XCPC3 Switch & Actuator w/ signal contacts 2 N/C + 1 N/O (N/C Aux. Contact) 3 m cable 44531-0250
MC-S2XOPC3 Switch & Actuator w/signal contacts 1 N/C + 2 N/O (N/O Aux. Contact) 3 m cable 44531-0255
MC-S2XCPC10 Switch & Actuator w/signal contacts 2 N/C + 1 N/O (N/C Aux. Contact) 10 m cable 44531-0260
MC-S2XOPC10 1 N/C + 2 N/O (N/O Aux. Contact) 10 m cable 44531-0265
Type 3
MC-S3PCC Switch & Actuator 1 N/C + 1 N/O connector 44531-0300
STAINLESS STEEL CASE SWITCHES
MC-SS2XOSCC5 1 N/C + 2 N/O (N/O Aux. Contact) connector + 5 m cable 44531-0450
MC-SS2XCSCC5 2 N/C + 1 N/O (N/C Aux. Contact) connector + 5 m cable 44531-0455
MC-SS2X0SC6 1 N/C + 2 N/O (N/O Aux. Contact) 6 m cable 44531-0460
MC-SS2XCSC6 2 N/C + 1 N/O (N/C Aux. Contact) 6 m cable 44531-0465
Spare MC-S Type 1 Actuator, Plastic 44531-0710
Spare MC-S Type 2 Actuator, Plastic 44531-0720
Spare MC-S Type 3 Actuator, Plastic 44531-0730
Spare MC-SS2 Actuator, Stainless Steel 44531-0740
Accessories and Cables with Mating Connectors (see page G238)
■ Ordering
MC-S Series
Universal Mounting Brackets can be used
with this product. See page G241 for details.
✎