Rockwell Automation Allen-Bradley Guard master MC2 User manual

Product Information
Original Instructions
Magnetically Coded Non-contact Switch (MC2)
Catalog Numbers 440N-Z21W1PA, 440N-Z21W1PB, 440N-Z21W1PH
Wiring
Recommended Mating Cable
The standard cable lengths are 2 m, 5 m, and 10 m. Use catalog number 889D-F8AB-2 [2 m (6.5 ft)] for the
standard length. Replace the 2 with 5 [5 m (16.4 ft)] or 10 [10 m (32.8 ft)] for other standard cable lengths.
Status/Diagnostic Indicator
Mounting Information
Use nonremovable screws, bolts, or nuts to mount the switch and actuator. Do not over torque the
mounting hardware. It is recommended to use M3 screws and washers throughout.
Maximum torque is 1 N•m (8.86 in•lb). Use nonmagnetic mounting hardware.
Position the switch and actuator so they are aligned with each other.
Mounting for Maximum Misalignment
Mount the sensor to the fixed part of the guard and the actuator to the movable section. Keep the sensor
and actuator within the sensing range detailed as shown in Figure 3 on page 2.
Minimum distance between sensors is 50 mm (1.97 in.).
Figure 2 - Sensor Alignment
ATTENTION: Read this document and the documents that are listed in
Additional Resources on page 2 about installation, configuration, and
operation of this equipment before you install. Users are required to
familiarize themselves with installation and connection instructions and
requirements of all applicable codes, laws, and standards.In accordance with
applicable codes of practice, suitably trained personnel are required to
implement installation, adjustments, service initiation, use, assembly,
disassembly, and maintenance. If this equipment is used in a manner that the
manufacturer does not specify, the protection that is provided by the
equipment may be impaired.
ATTENTION: The presence of spare actuators can compromise the integrity
of safety systems. Personal injury or death, property damage, or economic
loss can result. Appropriate management controls, working procedures, and
alternative protective measures should be introduced to control their use and
availability.
WARNING: Do not defeat, tamper, remove, or bypass this unit. Severe injury to
personnel could result.
Pin Wire Color Signal
1 White PNP Aux
2Brown
+24V (1)
(1) Operating voltage is 24V DC +10%/-15% Class 2 SELV or PELV power supply.
3 Green Not connected
4 Yellow Safety B
5GraySafetyA
6PinkSafetyB
7 Blue 0V
8RedSafetyA
IMPORTANT When the MC2 is used with any MSR100 series relay, for the diagnostic
function to operate correctly the red and gray wires (Safety A) must be
connected to S11 and S12.
+24V
Aux
Gnd
Safety B
Safety A
Not
connected
Safety A
Safety B
4
7
6
8
1
5
2
3
Table 1 - Status Indicators (per IEC 60073)
State Status Troubleshooting
Off Not powered Check supply, check wiring to controller A
Off Overload Check AUX connections
Red Actuator not present If actuator present check misalignment.
Green Actuator present —
Green flashing Actuator present Actuation not present on other switches
or wiring fault
Check wiring to controller.
Check actuators on other switches
IMPORTANT To obtain maximum switching distance, center the switches ±4 mm (0.24 in.).
Actuator
Status
Indicator
To obtain maximum switching
distance center switches
± 4 mm (0.16 in.)
To prevent damage, it is recommended that a 2 mm (0.08 in.)
gap be maintained between the actuator and sensor.
Distance 8…14 mm (0.31…0.55 in.)
Actuator Sensor
To prevent damage, it is recommended
that a 2 mm (0.08 in.) gap be maintained
between the actuator and sensor.
Actuator
Sensor

Publication 440N-PC002A-EN-P - April 2021 | Supersedes Publication 440N-PC002_-EN-P - January 2021
Copyright © 2021 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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Allen-Bradley, expanding human possibility, Guardmaster, Rockwell Automation, and SensaGuard are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
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For technical support, visit rok.auto/support.
Waste Electrical and Electronic Equipment (WEEE)
Rockwell Automation maintains current product environmental compliance information on its website at rok.auto/pec.
At the end of life, this equipment should be collected separately from any unsorted municipal waste.
Figure 3 - Misalignment Curve
Maintenance
Every six months, check the correct operation of the switching circuit. Also check for signs of abuse or
tampering. Inspect the switch casing for damage.
Repair
If there is any malfunction or damage, no attempts at repair should be made. The unit should be replaced
before machine operation is allowed.
Approximate Dimensions
Figure 4 - Plastic Barrel [mm (in.)]
Additional Resources
To download publications, visit rok.auto/literature and search for the following publication numbers.
ATTENTION: Verify that the machine is isolated
and stopped whenever the interlocked guard door
is open.
0
0
0
-4 -8 -12 -16 -20 442-8121620
4
8
12
16
0
48121620
4
8
12
16
20
24
20
24
2 mm Gap
0
00
4121620
4
8
12
16
0
4121620
4
8
12
16
20
2 mm Gap
Face A Break
Make
Break
Make
Break
Break
2 mm Gap
Break
Make
Break
Make
2 mm Gap 2 mm Gap
-4 -8 -12 -16 -20 -24
-4 -8 -12 -16 -20 -248
-4 -8 -12 -16 -20 -248
Break
Make
Break Break
Face A
Resource Description
SensaGuard Magnetically Coded Non-
contact Switch (MC2) Installation
Instructions, publication 440N-IN003
A detailed description of the SensaGuard™ MC2 switch
f u nc t i on a l i t y , configuration, installation procedure,and
information on how to use the switch.
Product Certifications website,
rok.auto/certifications Provides declarations of conformity, certificates, and other certification details.
5.5
(0.22)
16.5
(0.65)
Ø4.2
(
0.17)
20.0
(0.79) 29.0
(1.14)
53
(2.1)
48.0 (1.89)
22.0 (0.87)
5.5
(0.22)
16.5
(0.65)
Ø4.2
(0.17)
20.0
(0.79) 29.0
(1.14)
48.0 (1.89)
22.0 (0.87)