Delta Controls 207 - Manual (Page 2)

Low Voltage Directive (LVD) – 2006/95/AC. Switch products with enclosure codes
‘W’ and ‘A’ supplied CE-marked must be installed and used in accordance with the
main instructions and this addendum supplied with each product. Products rated
lower than 50V ac and 75 V dc are outside the scope of the LVD, and therefore, do
not require CE-marking under this directive. The LVD does not apply to products
with enclosure codes ‘H’, ‘K’, ‘R’, ‘M’, ‘N’ for use in hazardous areas. Switch products
with enclosure codes ‘H’, ‘K’, ‘R’, ‘M’, ‘N’, are covered by the Explosive Atmospheres
Directive ATEX – 94/9/EC and when CE-marked will indicate compliance with this
directive alone. The following directives do not apply to switch products
manufactured by Delta Controls:
Electromagnetic Compatibility EMC – 2004/108/EC
Machinery Safety Directive MSD – 2006/42/EC
WIRING
ENCLOSURE ‘W’
Cable Glands and adaptors – If enclosure ‘W’ is supplied with a through hole of 22 mm
blanked with a blind grommet. Discard the grommet and fit a suitable proprietary brass or
nylon M20 cable gland with thread length of 10 mm and locknut. Fit the nylon reducer provided
to the inside and a fibre washer to the outside. See diagram 1.
Alternately, the enclosure may be supplied from the factory with a threaded adaptor ready to
accept the customer’s gland or conduit system.
Alternatives:
i) a metal or nylon adaptor may be used to accommodate other sizes of gland eg NPT, or
conduit system. See diagram 2.
ii) an elbow kit may be supplied to enable the entry to be rotated axially through 90° and
radially through 360°. See diagram 3.
Earthing / grounding – The user must make suitable local earthing arrangements, if required,
to ensure that metal glands are earthed.
An earthing point is provided inside the enclosure. If this is disturbed in any way it must be
reassembled correctly to be an effective earth and prevent ingress. See diagram 4. When
removing the lid slacken the M4 nut first and ensure it is re tightened whenever the lid is
replaced. See diagram 4.1.
ENCLOSURE ‘A’
Cable Glands and adaptors – Enclosure ‘A’ is supplied with an M20 x 1.5 tapped hole. Use a
suitable stainless steel cable gland and sealing washer. Alternately the enclosure may be
supplied with a threaded adaptor fitted at the factory ready to accept the customer’s gland or
conduit system. See diagram 5.
Earthing / grounding – Bonding between the enclosure and gland / adaptor will be achieved
when both parts are screwed together. An earthing point is provided inside the enclosure. If
this is disturbed in any way it must be reassembled correctly to be an effective earth and
prevent ingress. See diagram 4.
EARTHING / GROUNDING OF PROCESS CONNECTION AND BACK PLATES – All the
internal dead metal work is bonded to the enclosure earthing point. Due to requirements of
sealing, the process connection and back plates may be isolated from the earthing point. Do
not, therefore, rely on either for earthing, instead always use the earthing point provided. If
required, the process connection and back plates may be bonded locally. Never use the
process connection or inlet pipe for locally grounding welding equipment unless it is separately
earth bonded.
Pollution degree – all products are suitable for use in pollution degree 3. For extreme
conditions where condensation may readily form, then sealed contacts should be used. See
Table A codes 08/09, 0G/0H, H2/H3/H6.
Electrical isolation – These products are not suitable for electrical isolation. Always isolate
circuit separately to carry out any electrical work.
TABLE A – MICROSWITCH RATINGS
IEC 947-5-1 / EN 60947-5-1 RATING
VA
S
W
IT
C
H
C
O
D
E UL / CSA
MICROSWITCH
RATING
(RESISTIVE)
*SEE NOTE U
im
p
U
i
RATING
(IeIUe)
Designation
&
Utilisation
Category
M
a
k
e
B
re
a
k
5A @ 110 / 250 VAC 0.6/0.3A @
120/240 VAC
AC 14 / D300 AC 432 72
0.8kV 250V
00
&
01
0.22/0.1A @
125/250 VDC
DC 13 / R300 DC 28 28
5A @ 110 / 250 VAC 0.6/0.3A @
120/240 VAC
AC 14 / D300 AC 432 72
0.8kV 250V
02
&
03
2A @ 30 VDC 0.22/0.1A @
125/250 VDC
DC 13 / R300 DC 28 28
1A @ 125 VAC
N/A
04
&
05
*100mA @ 30 VDC
*5A @ 110/250VAC 0.6/0.3A @
120/240 VAC
AC 14 / D300 AC 432 72
0.5kV 250V
0P
&
0Q
2A @ 30 VDC 0.22/0.1A @
125/250 VDC
DC 13 / R300 DC 28 28
*1A @ 30VAC AC 14 / E150 AC 216 36
0.5kV 125V 0.3A @ 120
0G
&
0H
& 30 VDC VAC
0C 5A @ 110 / 250 VAC 0.8kV 250V 0.6/0.3A @
120/240 VAC
AC 14 / D300 AC 432 72
5A @ 110 / 250 VAC 0.6/0.3A @
120/240 VAC
AC 14 / D300 AC 432 72
0.8kV 250V
0D
2A @ 30 VDC 0.22/0.1A @
125/250 VDC
DC 13 / R300 DC 28 28
5A @ 110 / 250 VAC 0.6/0.3A @
120/240 VAC
AC 14 / D300 AC 432 72
0.5kV 250V
H2
&
H3
&
H6
2A @ 30 VDC 0.22/0.1A @
125/250 VDC
DC 13 / R300 DC 28 28
The electrical rating is dependent on the microswitch fitted to the instrument. The
electrical rating is defined by each approval that the microswitch complies with and
is shown on the product nameplate, ie UL / CSA, or IEC. It should be noted that the
switch must be used within the electrical rating specified from the approval you
require. Table A lists the actual IEC ratings against the Designation & Utilisation
Category marked on the nameplate. In the absence of any verification by UL / CSA
the microswitch *manufacturer’s rating is specified in bold italics. If in doubt, seek
guidance from factory.
ENCLOSURE WALL
LOCKNUT
NYLON 22/20
REDUCER FIBRE WASHER
PROPRIETARY
GLAND
DIAG 1
‘W’ CABLE GLAND ASSY
CABLE GLAND /
CONDUIT ADAPTOR
DIAG 2
‘W’ ADAPTOR ASSY
GLAND
SCREW FIBRE
WASHER O RING
SEAL ½" NPT Pg 13.5
M20 X 1.5 ¾ ET ENCLOSURE
WALL
DIAG 3
ELBOW ASSY
M4 PLAIN
WASHER
M4 SCREW
EARTH
STRAP
M4 STUD
M4 SINGLE
COIL WASHER
M4 NUT
LID
BASE
GASKET
DIAG 4.1
EARTH STRAP
E N C L O S U R E M 2 0 x 1 . 5
F IB R E W A S H E R
A D A P T O R
D I A G 5
‘ A ’ A D A P T O R
E A R T H L A B E L
E N C L O S U R E W A L L
(E X T E R IO R )
S C R E W
B O N D E D S E A L
S IN G L E
C O IL
W A S H E R
P L A IN
W A S H E R S
S T A R W A S H E R
N U T
N U T
D IA G 4
E AR T H IN G A S S Y
Declaration of Conformity
We: Delta Controls Ltd
Island Farm Avenue
West Molesey
Surrey, UK
KT8 2UZ
As the manufacturers of the apparatus listed, declare under our sole responsibility that the products listed
below:
Pressure, Pressure Difference, Temperature & Flow switches series “W” or “A”:
201, 202, 203, 281, 204, 207, 208, 209, 231, 232, 233, 234, S21, S22, S24, GR2, GR4, VM2, VM4.
301, 303, 304, 381, 384, 306, 386, 310, 316, S31, S34, GR3, GR6.
721, 731, 771, 722, 732, 772, 723, 733, 773, 781, 734, 774, 741, 742, 743, 744, S71, GR7.
131.
To which this declaration relates are in conformity with the following relevant standards or parts thereof:
EN 60947-1 :1992
Low voltage switch gear and control-gear-general rules.
EN 60947-5-1:1992 Low voltage switch gear and control-gear-control circuit devices and switching
elements.
EN 60529: 1991 Specification for classification of degrees of protection provided by enclosures.
EN 60950:1992 Safety of information technology equipment including electrical business equipment:
section 2.5.
BS 6134:1991
Specification for pressure and vacuum switches.
And thereby conforms to the requirements of the Low Voltage Directive 73/23/EC amended by 93/68/EEC.
Signed:
………………….
R. Harrison
Managing Director
Original dated 22
nd June 2000
Rev. B dated 12 th August 2009