Emerson HyVision Instructions D'installation Et De Réglage page 3

• This intrinsically safe version of the HyVision switchbox
shall be supplied only via suitably ATEX certified
associated apparatus and may be located in a zone 1
or 2. It may be used where there is a potentially
explosive atmosphere caused by gases and vapours
associated with apparatus groups IIA, IIB and IIC and
with temperature classes T1 to T6.
• Avoid installing in a location where ignition-capable
levels of static charge could build up, particularly when
installing in higher-risk zones.
• Versions with inductive switches must be protected from
strong electromagnetic fields.
• Connect with wiring 0.5 mm2 to 2.5 mm2, check that
the wires are properly inserted into the terminal block
and that all terminal screws are tight.
• Note that there is no Earth (Ground) connection and
neither the circuit nor the screen (if applicable) should
be connected to earth in the hazardous area. Therefore
do not connect to the earth terminal.
Switch A
Switch B
Fig. 3 Wiring for versions with inductive switches: 2-P+F
Hytork standard
COM COM
wiring :
Lower switch is
striking when valve
is in the closed COM COM
position.
Fig. 4 Wiring for versions with gold contacts: 2-GC
DOC.HVM.1 Rev: B
1
2
Brown
3
Blue
4
Brown
5
Blue
6
7
8
Red Red
1
Blue Blue
Upper switch Upper switch
2
Yellow Yellow
3
Red Red
4
Yellow Yellow
Lower switch Lower switch
5
Blue Blue
6
7
8
Installation and setting instructions
2.4 Important Safety Procedures
a) Before carrying out any form of maintenance on the
Switchbox, ALWAYS disconnect all air and electrical
supplies.
b) Electrostatic Hazard. Clean only with a damp cloth.
c) When replacing any items, use only HYTORK
supplied components and suitably qualified and
competent personnel.
d) For ATEX applications use only ATEX certified
glands rated IP64 or higher.
e) Use glands rated IP66 or higher, to assure ingress
protection according IP66.
IMPORTANT NOTES:
• All electrical wiring must be carried out in accordance
with Local and National Electrical Standards and
Codes. i.e. EN 60079-14 (1997) or IEC 60079-14
(1996).
• For non hazardous versions, ensure that the Earth
(3 ; Ground) wire is connected to the screw on the
Switch/Terminal plate using a crimped lug. Check that
wires are properly inserted into the terminal block and
that all screws are tight.
3 Fitting the HyVision
The standard HyVision Switchbox is designed to fit directly
onto any Namur VDE/VDI mounting, using the relevant
size Safemount platform supplied by Hytork. If the Switch
Box is to be mounted to components without Namur
VDEIVDI mountings, a special mounting kit will be
required.
3.1 NAMUR Mounting
For Namur mounting (Fig. 6), bolt the Safemount to the
bottom of the HyVision Switchbox, using 4 off M6 x 16 (1/
4"unc x 5/8") cap head bolts and M6 (1/4") spring washers.
Lower this assembly onto the actuator so that the
Switchbox drive shaft locates into the actuator drive shaft
and the Safemount sits on the actuator body. Using 4 off
M5 x 16 (No. 10 unc x 3/4") and M5 (No.10) spring
washers, lightly secure the Safemount to the actuator.
Once the Switchbox and actuator shafts are correctly
aligned, tighten all the bolts. Both sets of bolts and
washers are supplied with the Safemount.
3
HyVision Switchbox
Jan. '05