Electro-Pneumatic Positioner SP 520 Series
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Ver 1.20
5
SHIN HWA Eng.Co.,Ltd.
according to IEC/EN 60127-2) shall be used in supply circuit.
Enclosure with viewing window must be protected from high impact energy.
Flameproof type junction box must be equipped with certified Ex-d cable glands. Ex-i and
Ex-tb type junction box must be equipped with min IP64 rated Ex certified cable glands.
The layout uses Annex F, of EN 60079-11. Therefore the installation environment shall
comply with EN 60664 pollution degree 2 requirements.
While the power is connected, make sure that do not open SP520 power terminal box.
Before opening terminal box, make sure that power is off completely and after erasing
current and voltage completely, it must be opened.
SP520 series positioner have 2 ports for power connection. If one side of connection must
be used when using explosive cable or flame explosion proof to packing plug in the other
side should be used explosive blind plug in order to protect. (In case that the other items
shall be required to use except our company's supplying plug blind approved resistance to
explosion proof type structure shielding fitting or flame explosion proof type cable gland
must be used when connecting power on.)
Ring terminal with surface area of more that 0.195 mm
2
with should be used and also M4
spring washer should be used to prevent failing out.
For external ground terminal, ring terminal with surface area of more than 5.5 mm
2
should
be used.
There will be risk of explosion due to electro-static charge. Static electricity charge may
develop when cleaning the products with a dry cloth. It is imperative to avoid static electricity
charge in the hazard area. If cleaning the surface of the products is required, please use wet
clothes.
1-9
Safety to maintain intrinsic safety (Ex i) Proof (SP520) in danger area.
Check that explosion proof certification is valid in usage condition and must meet with
condition.
SP520 positioner is using Intrinsic safety proof (EX ia IIC T6/T5 Gb) code. and It can be
used in Zone 1,2 area.
Barrier must be installed in safety area.
SP520 positioner’s intrinsic safety’s parameter is as followings.
Main power : Ui=DC28V, Ii=93mA, Pi=0.65W, Ci=0.5nF, Li=10
μH
Feedback signal power : Ui=DC28V, Ii=93mA, Pi=0.65W, Ci=57.5nF, Li=10μH
Limit switch : Ui=DC28V, Ii=100mA, Pi=0.65W, Ci=0nF, Li=0μH
(See Table in Sections 2-6)
- Do not open the power terminal box cover of the SP520 product while there is potential
explosive atmosphere.
- SP520 has two power inlets. When using an explosion-proof cable or pressure-resistant
packing conduit, if only one power inlet is used, the other must be blocked with an
explosion-proof plug.
