MF Series
Rev. 1.08
Conforms to EN292, EN60204, EN954-1, EN1088, EN60947-5-3
Actual Size
19 mm
0.75 in.
82.5 mm
3.25 in.
G
safety interlock switches
MF Series
■
Tamper-Resistant Ferroresonant Safety Interlock Switch
Tamper resistant—the combina-
tion of magnetic and ferrore-
sonant signals required to close
the safety contacts makes the
MF Series switch very tamper
resistant. Fulfills the require-
ments of category 3 (EN 954-1).
Compact size—the MF Series
switch is pre-wired and mounts
easily on 1-in. square tubing
Misalignment tolerant—actuator
misalignment of up to 0.27 in.
is tolerated by the MF Series
switch
■
Color LED Status Indicator on
the MF Series switch makes it
easy to determine the status of
the switch
NEMA 6 enclosure enables the
MF Series switch to withstand
high pressure steam cleaning
Expandable system—the MF
Series switches can be wired
in Series/Parallel so that mul-
tiple doors may be guarded.
The safety monitoring relay or
control unit must accept 1 NC/
1 NO inputs. See wiring diagram
example.
■
Long life—the MF Series switch
is designed for a minimum of
one million actuations.
■
■
■
■
A
N
Go to the Engineering Guide
For in-depth information on
safety standards and use.
For More Guarding Products
See Section N for safeguarding
cutting and turning machines
OmrOn Scientific technOlOgieS, inc.
USA
Tel. 1/888/510-4357
canada
Tel. 1/866/986-6766
G98
For the Latest Information
On the Internet:
www.sti.com
or
www.omron.ca
MF Series
■
Operation
Switch Contacts and
Connections
Blue
Red
0.5 Amp
0.5 Amp
Black
White
Supply 24 VDC+ ve
Supply 24VDC + ve
Normally
Closed
Operating Principle
On presenting the actuator to
the switch, the high intensity
magnetic field, together with a
resonant frequency signal, causes
the contacts to close. On removing
the actuator (opening the door),
the safety contacts open, isolating
the machine. The switch can not
be overridden by magnets, tools,
etc.
Green Normally
Yellow Opened
Switch
Mounting Examples
■
Specifications
All models
24 VDC
2 VA/2 W
1 A on switch contacts
0.5 A
1 N/O + 1 N/C
9 mm ON/10 mm OFF
0.5 A/120 VAC
0.5 A/24 VDC
10 mA/10 V
100 m max.
4 x M4 screws
ABS plastic
270 g (9.5 oz.)
Red
Green = Guard Closed; Red = Guard Open
IP67 (NEMA 6)
-10 to 55°C (14 to 131°F)
90% RH at 50°C (122°F)
G
safety interlock switches
electrical
Power Supply:
Power consumption:
internal fuse:
external fuse (customer Supplied):
contact configuration:
contact Operating Distance:
max Switched Ac:
max Switched Dc:
min Switched current/Voltage:
cable length:
mechanical
mounting:
case material:
Weight:
color:
Dual indicator:
environmental
Protection:
Operating temperature:
humidity:
compliance
Standards:
EN292, EN60204, EN954-1, EN1088, EN60947-5-3
Approvals/listings:
CE marked for all applicable directives, UL and cULus pending
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.
Mounting Brackets can
✎
Universalproduct. See page G241 be used
with this
for details.
OmrOn Scientific technOlOgieS, inc.
USA
Tel. 1/888/510-4357
canada
Tel. 1/866/986-6766
For the Latest Information
On the Internet:
www.sti.com
or
www.omron.ca
G99
MF Series
■
Applications
Typical applications are on slid-
ing guard doors or swinging guard
doors.
+ 24V
Zone 1
Reset
Start
K1
K1
K2
Stop
MF-Series Switch
& Actuator
5
3
1
K2
L1 L2 L3
G
safety interlock switches
Zone 2
S1
6
4
2
A1
S11
S12
S13
Y1
Y2
K1
K2
Y34
Output
“Fault”
Y3
23
DC
DC
Power A1 / A2
Fault
LOGIC
K1 / K2
SR131A
K3
14
24
K4
A2
MF-Series Switch
& Actuator
S2
5
3
1
S21
S22
S23
Y44
Output
“K1 / K2”
Fuses
M
K4
SWITCH CONDUCTORS:
1 = White Conductor
2 = Green Conductor
3 = Yellow Conductor
4 = Black Conductor
5 = Red (+ 24 VDC)
6 = Blue (0 VDC)
6
4
2
K3
0 V
The MF Series switch and actuators are integrated with an SR131A safety monitoring relay. Each sensor has a
dedicated channel for the highest level of safety.
+ 24V
Zone 1
Reset
Start
K1
K1
K2
Stop
MF-Series Switch
& Actuator
S1
5
3
1
K2
L1 L2 L3
6
4
2
A1
S11
S12
S13
Y1
Y2
K1
K2
Y34
Output
“Fault”
Y3
23
Zone 2
5
3
1
A2
DC
DC
Power A1 / A2
Fault
LOGIC
K1 / K2
SR131A
K3
14
24
K4
S21
S22
S23
Y44
Output
“K1 / K2”
MF-Series Switch
& Actuator
S2
6
4
2
K3
Fuses
M
K4
MF-Series Switch
& Actuator
S3
5
3
1
6
4
2
SWITCH CONDUCTORS:
1 = White Conductor
2 = Green Conductor
3 = Yellow Conductor
4 = Black Conductor
5 = Red (+ 24 VDC)
6 = Blue (0 VDC)
A
Go to the Engineering Guide
For in-depth information on
safety standards and use.
0 V
The MF Series switch and actuators are integrated with an SR131A safety monitoring relay. The safety contacts
of the MF switches for zone 2 are wired in Series/Parallel. This method allows multiple gates or switches to be
wired to a single channel on the safety monitoring relay or control unit.
OmrOn Scientific technOlOgieS, inc.
USA
Tel. 1/888/510-4357
canada
Tel. 1/866/986-6766
G100
For the Latest Information
On the Internet:
www.sti.com
or
www.omron.ca
N
For More Guarding Products
See Section N for safeguarding
cutting and turning machines
MF Series
■
Dimensions — mm/in.
19.0
0.75
19.0
0.75
19.0
0.75
17.0
0.67
82.5
3.25
73.0
2.87
11.0
0.43
54.0
2.13
82.5
3.25
G
safety interlock switches
7.20
0.28
7.20
0.28
■
Ordering
contacts
1 N/C + 1 N/O
1 N/C + 1 N/O
Wiring entry
5m
10 m
Part no.
44518-1050
44518-1070
44518-1700
model
MF-2PC5 Switch & Actuator
MF-2PC10 Switch & Actuator
MF-2PSA Spare Actuator
Accessories (See page G238)
Recommended safety monitoring relay for this product: SR131A or SR231A.
Mounting Brackets can
✎
Universalproduct. See page G241 be used
with this
for details.
OmrOn Scientific technOlOgieS, inc.
USA
Tel. 1/888/510-4357
canada
Tel. 1/866/986-6766
For the Latest Information
On the Internet:
www.sti.com
or
www.omron.ca
G101
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