Cooper Crouse-Hinds FLEX-STATION Serie Información De Instalación Y Mantenimiento

FLEX-STATION™ SERIES CONTROL STATIONS
Installation & Maintenance Information
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE
APPLICATION
The Flex-Station Series control devices are used in conjunction
with magnetic starters or contactors for remote control of motors
and to visually indicate that the desired function is being
performed.
The pushbutton stations, selector switches and factory sealed
pilot lights are used separately or in combinations with a variety
of standard features and special options available.
EDS, EDSC, EFS and EFSC Dimensions
EDS SERIES SINGLE GANG EDS SERIES TYPICAL BODY SIDE VIEW
Hub Dead End Through Feed Hub Dead End
Size Cat. # Cat. # Size Cat. #
1/2"* EDS171 EDSC171 1/2"* EDS171
3/4" EDS271 EDSC271 3/4" EDS271
1" EDS371 EDSC371 1" EDS371
EFS SERIES TYPICAL BODY SIDE VIEW
3
32
15
2
32
Hub Dead End Thru Feed Dim. Dim.
Size Cat. # Cat. # a b
1/2"* EFS171 EFSC171 1 15/16
3/4" EFS271 EFSC271 1 15/16
1" EFS371 EFSC371 1 15/16
INSTALLATION OF BACK BOX
WARNING
To prevent explosions and shock hazard, electrical power must
be OFF before and during installation and maintenance.
1. Select a mounting location that will provide suitable strength
and rigidity for supporting all contained wiring and control
devices. Figure 1 shows the mounting dimensions of all EFS
and EDS back boxes. Drill and tap mounting holes in this
location for the 5/16 – 18 bolts.
2. Securely fasten the device body to the mounting surface, then
attach the body into the conduit system.
IF 1418 • 01/05 Copyright © 2005, Cooper Industries, Inc.
When used with an EFS/EFSC series of back box these
assemblies are suitable for use in Class I, Groups B, C and D
(Division 1 and 2), Class II, Groups E, F and G and Class III
hazardous locations, as defined by the National Electrical Code®
(NEC). When used with an EDS/EDSC series of back box these
assemblies are suitable for use in Class I, Groups B (Division 2
only), and C & D (Division 1 and 2), Class II, Groups E, F and G
and Class III hazardous locations.
EDS SERIES TWO GANG
Thru Feed Dim. Dim. Hub Dead End
Cat. # a b Size Cat. #
EDSC171 3/4 13/16 1/2"* EDS172
EDSC271 7/8 13/16 3/4" EDS272
EDSC371 1 15/16 1" EDS372
EFS SERIES SINGLE GANG
1
7
16
Hub Dead End Through Feed
Size Cat. # Cat. #
1/2"* EFS172 EFSC172
3/4" EFS272 EFSC272
1" EFS372 EFSC372
* Reducers required.
WARNING
To ensure proper installation, hazardous location information
indicating the class and group the product is approved for is
marked on the nameplate of each device. Conduit sealing
fittings may be required to be installed to comply with the
requirements of the latest edition of the NEC, Section 501-5
and/or 502-5 plus any other applicable standards. Review
nameplate for specific information.
3. Pull supply wires into the enclosure, making them long enough
to make the required connections. Each conductor should be
long enough to extend at least 3 inches outside the cover
opening.
4. After selecting the proper cover assembly configuration, make
the electrical connection utilizing the wiring scheme
established for your system. See Assembly of Pushbuttons and
IF 1418
Pilot Lights for instructions on how to assemble the cover
assemblies. Disassembly of internal components may be
required. See Figures 9 and 10 for wiring diagrams for the
pushbuttons and pilot lights respectively.
To avoid explosions, check for dirt, grit or other foreign material
on the mating surfaces of the cover and the back box. Be
certain that each surface is wiped completely clean before
assembling. Surfaces must seat fully against each other to
provide a proper explosionproof joint.
5. When cover assembly with operators is completely assembled
per below steps, test wiring for correctness with continuity
checks and also for unwanted grounds with an insulation
resistance tester.
6. Carefully assemble cover assembly to the device body with the
cover screws. Check the tightness of the cover screws to
ensure that the cover assembly is securely fastened.
ASSEMBLY OF PUSHBUTTONS
Mounting block position
for 2 contact blocks
Through Feed
Cat. #
EDSC172
Double contact
EDSC272
block actuator
EDSC372
Figure 2. Inside View of Two Operator Cover
• Knowing the back box configuration, select the proper size
cover (1, 2 or 3 device) for application.
• Select the DL legend plates with proper markings or marking
windows. Orient them horizontally on the cover as desired.
Note a marking window is provided for field marking customer's
specific terms.
• Reference Table 1 to determine the subassemblies needed to
suit your specific requirements.
Description
Single pushbutton
Single pushbutton– momentary
Single mushroom head
pushbutton with lockout
Single mushroom head
pushbutton – maintained w/ lockout
Single pushbutton – red
Single pushbutton – green
Single pushbutton
Single pushbutton –momentary
Single mushroom head
pushbutton with lockout
Single mushroom head
pushbutton – maintained w/ lockout
Single pushbutton – red
Single pushbutton – green
Double pushbutton
Double pushbutton – red
Double pushbutton – green
Two position selector switch
Three position selector switch –
center OFF
Three position selector switch
Page 1 IF 1418 • 01/05
Single pushbutton with one contact block
• Install pushbutton operator assembly to the front side of the
cover by threading it down tight to the cover in the desired
location. Use a DL legend plate if required as noted in
ASSEMBLY OF PUSHBUTTONS.
• Position the lockout slots on the guard so it does not interfere
with an adjacent device. Note the operator may be backed off
WARNING
up to ½ turn to orient the lockout slots without defeating the
explosionproof integrity.
• On the inside of the cover, fasten the mounting block to the
threaded portion of the pushbutton assembly. Orient the
mounting block as shown in Figure 2. This step will allow the
contact block to be in the proper position. Tighten the set-screw
thereby locking the pushbutton assembly to the cover, see
Figure 3.
• Assemble the necessary contact block per instructions in
INSTALLATION OF CONTACT BLOCK section.
Mounting block position for
single contact block or pilot
light using a transformer
Mounting block
Number of Sub-assembly
Figure 3. Assembly of Single Pushbutton Operator
contact blocks catalog number
(ESWP126)
1 DEV11
1 DEV11-S111
Single pushbutton with two contact blocks
• Install pushbutton sub-assembly to the front side of the cover
1 DEV11-S153
by threading it down tight to the cover in the desired location.
1 DEV11-S769
Use a DL legend plate if required as noted above. Note that
the guards with lockout holes should allow a hasp of the lock to
1 DEV11 R
not interfere with an adjoining device.
1 DEV11 G
2 DEV12
• Fasten the mounting block to the inside of the cover. Orient the
2 DEV12-S111
mounting block so that the contact blocks will be in the desired
position, see Figure 2. Tighten the set-screw thereby locking
2 DEV12-S153
the pushbutton assembly to the cover, see Figure 4 on next
page. Using the one #6-32 x 5/16 pan head screw and lock
2 DEV12-S769
washer, fasten the double contact block actuator to the plunger
2 DEV12 R
of the pushbutton operator assembly. Next, fasten the mounting
2 DEV12 G
plate to the mounting block using the two #4-40 pan head
2 DEV22
screws provided.
2 DEV22 R
• Assemble the necessary contact blocks per instructions in
2 DEV22 G
INSTALLATION OF CONTACT BLOCK section.
2 DEV42*
2 DEV43*
2 DEV44*
* Including all selector
Table 1
switch options
Copyright © 2005, Cooper Industries, Inc.
Pushbutton operator
(lockout version shown)
Spring Washer
Legend plate
Cover
(cut-away shown)
1/16" hex head set screw
With 1 Contact Block
Page 2