GS2 [ALLEN-BRADLEY]
Non contact Switches; 非接触开关
| 型号： | GS2 |
| 厂家： | 
Allen-Bradley |
| 描述： | Non contact Switches |
| 文件： | 总4页 (文件大小：85K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Interlock Switches
Non contact Switches
Ferrogard GS1 & GS2
Specifications
Standards
EN954-1, ISO13849-1, IEC/EN60204-1,
NFPA79, EN1088, ISO14119,
ANSI B11.19, AS4024.1
Category
Approvals
Cat. 1 Device per EN954-1
Dual channel interlocks suitable for Cat.
3 or 4 systems
GS1 and GS2 CE marked for all applicable directives
and cULus
GS2 Ex EExd IIC T6 Baseefa
Operating Distance – Make
GS1
GS2 12mm (0.47in)
15mm (0.59in)
Operating Distance – Break
Description
GS1
GS2 23mm (0.91in)
26mm (1.02in)
The Ferrogard range of magnetically actuated safety switches offers
Non contact reliability together with tolerance to misalignment.
They are designed to be installed so that when a guard door is
opened, the action of the magnetic actuator being removed from the
switch opens the N.C. safety contacts which are intended for the
isolation of control power to a machine primary control element.
Closing Time
3.0ms
2.1ms
0.7ms
15mW
Dropout Time
Bounce Time
Initial Contact Resistance
Initial Capacitance, Terminal 0.65pF
to Terminal
The GS1 and GS2 are designed for heavy duty applications. The
GS1 is housed in a stainless steel or brass housing. The GS2 offers the
same characteristic as the GS1, but in an Ex housing for hazardous
locations.
6
Initial Insulation Resistance,
Te rm ina l to Te rm i na l
1 x 10
Ω
Safety Contact Switching
Capability
250V AC 2A max
< 1.6A quick blow
600V AC
Unlike some magnetic switches the Ferrogards have protected safety
contacts to help ensure that they do not fail to danger.
Safety Contact External
Fusing
All Ferrogards have internal non-resettable overload protection on
the safety contact. They should be protected by an external fuse
rated as shown in the specifications table.
Min Initial Breakdown
Voltage
Operating Temperature
Enclosure Protection
-25°C to +125°C (-13° to +257°F)
IP68 (NEMA 6P)
See the Explosion Proof section on page 16-1 for more
information on the EX version of the Ferrogard GS2.
Cable
2
GS1 Brass
0.75 mm (18AWG) 2 wire
Grey PVC Jacket OD 6mm (0.24in)
Features
Stainless Steel
GS2
2
0.75 mm (18AWG) 2 wire
•
•
•
•
•
Non contact actuation
White PVC Jacket OD 7mm (0.28in)
2
High tolerance to misalignment
High switching current (2A AC)
Metal housings (IP 68)
1.34 mm (16AWG) 2 wire Braided
Polyolefin Jacket OD 8.4.mm (0.32in)
Case Material
Mounting
Stainless Steel or Brass
Ex version available
Any Position
M3 mounting security screws included.
Weight (not including cable)
GS1 Brass
GS1 Steel 381g (0.84lbs)
Actuator 388g (0.86lbs)
116g (0.26lbs)
6
Electrical Life
1 X 10 at rated load
6
Mechanical Life
10 X 10
Vibration
Shock
15g, 20 to 1000Hz
50g
Ex Version
See Explosion Proof Section
3-52
Interlock Switches
Non contact Switches
Ferrogard GS1 & GS2
Product Selection
Safety Contact
Switching Capability
Auxiliar y
Contacts
Catalogue
Num ber
Safety Contacts
Connection
Housing
Brass
Type
440N-G02048
440N-G02049
440N-H02046
440N-H02047
2m Cable
GS 1
Stainless Steel
Brass
250V AC, 2A
1 N.C.
None
3m Cable
GS 2 Ex
Stainless Steel
Note: Contacts are described with the guard door closed, that is, actuator in place. Switch is shipped complete with Actuator.
Accessories
Description
Actuator, Alnico
Actuator, Epoxy-painted
Used with
Brass Switch
Stainless Steel
Page Num ber
Catalogue Num ber
—
—
440N-A02056
440N-A02057
Approximate Dimensions—mm (inches)
Dimensions are not intended to be used for installation purposes.
GS1 Switch
GS1 & GS2 Actuator
GS2 Switch
19
(0.75)
12 (0.47)
11 (0.43)
17
(0.67)
13
(0.51)
19
(0.75)
6.5
(0.26)
25
(0.98)
20
(0.79)
7
6.5
(0.26)
16
(0.63)
22
(0.87)
(0.28)
Typical Wiring Diagrams
Q D
Cable
Brown Safety
N.C.
Fuse
Externally
Safety
N.C.
Fuse
Blue
Externally
Note: Unit must be to a grounded to a grounded metal frame or grounded via the field wiring per NEC requirements.
Application Details
See page 3-54 for operating principles and mounting examples.
3-53
Interlock Switches
Non contact Switches
Ferrogard Applications
Application Details
O perating Principle
Encapsulated in the Ferrogard is a unique high power industrial reed,
capable of switching up to 15A. The need switch is de-rated by a
non resettable overload protection fuse. On presenting the actuator
to the switch, the high intensity magnetic field from the actuator
causes the contacts to close. On removing the actuator (opening
the door), the safety contacts open.
Mounting Exam ple 1
Door Closed, Machine RUN
Door Opened, Machine STOP, Door Covering Switch
2mm
Sliding Door
No access to switch thus
preventing attempts to defeat
the interlock.
Sliding Door
Note: Whenever possible, the units should be mounted so that no access can be obtained to the switch when the guard door is open, thus preventing
attempts to defeat the safety system.
Mounting Exam ple 2
Min 50mm
2mm
Switch
Switch
Actuator
Actuator
✘
✘
Door 1
Door 2
It is advisable, where possible, to mount the switch and
actuator on nonferrous materials otherwise it may effect the
operating distances. If mounting on ferrous material, use of a
5mm plastic spacer is recommended.
3-54
Interlock Switches
Non contact Switches
Ferrogard Applications
Application Details
Note: Under the requirements of the Machinery Directive all machinery must undergo risk
assessment to determine the necessary level (or category) of the safety related control system or
hazard avoidance measures. While the Ferrogard complies with the requirements of EN1088 it may
not be suitable for all types of machinery or environments. Where magnetic materials are present
or if it is foreseeable that through machine function or use. Ferrogard operation by magnates other
than the supplied actuator is possible, then use of an alternative Allen-Bradley Guardmaster switch is
recommended. Other Non contact options include: Ferrocode (which utilizes additional coding
techniques preventing them from being overridden by simple means). Alternatively additional
measures may be taken to prevent the Ferrogard being easily bypassed. Consideration should be
given to the recommended installation example given in the instructions and those in EN1088.
✘
✘
✘
Typical Applications
Sliding Guard
Rem ovable Guard
Hinged Guard
Note: Removable guards using Non contact
switches may require two switches, one at either
side of the guard, or the use of a flap to prevent
initial lifting of the non-interlocked edge.
3-55
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