Spirax Sarco EP6 User manual

IM-P703-05 CTLS Issue 6
EP6 Positioner
© Copyright 2022
This guide covers only a brief description of installation and maintenance for Spiratrol
and QL valves.
For detailed installation, operations, maintenance including safety, precautions, and
warnings, please refer to our official instruction manual at www.spiraxsarco.com
(IM-P703-02 or IM-P703-04 (ATEX)).
EP6 is Electro-Pneumatic Positioner that accurately controls valve stroke in response to an input signal of
4-20 mA from the controller.
Operators must wear ear protection when commissioning positioner
Explosion Proof Warning (Only for explosion proof type positioners)
Please ensure the unit is being used and installed in conformity with local, regional, and national
explosion proof regulations.
1. Explosion proof type of cables and gaskets should be used, when explosion gases are present
at the installation site. Wiring should be carried out in accordance with IEC 60364 or equivalent.
2. Power should be turned off completely when opening product's cover. When opening the cover,
ensure that there is no power remaining in any electrical parts nearby.
3. Flameproof enclosure type positioner has 2 ports for power connection. Explosion proof type
wires and packing should be used. Blind plug is required when any port is not being used.
4. Ring terminal with surface area of more than 1.25 mm2with M4 spring washer should be used
to connect the power.
5. For external ground terminal, ring terminal with surface area of more than 5.5 mm2 should be used.
6. There is risk of explosion due to static electricity charge. Static electricity charge may develop
when cleaning the product with a dry cloth. It is imperative to avoid static electricity charge in the
hazardous environment. If cleaning the surface of the product is needed, must use a damp cloth.
7. To meet explosion-proof marking information and ingress protection of IP66, use certified
Ex-cable glands and Ex-plugs.
8. If you need additional information about the dimensions of the flameproof joints, contact
Spirax Sarco directly.
9. The electric valve positioner must be connected in series with a fuse with a rated current not
higher than 62 mA, a breaking capacity above 1500A, and a rated voltage not less than the
working voltage of the product.
10. The cable entry must be equipped with a cable entry device, which must be an Ex cable entry
device approved by the explosion-proof inspection agency (For NEPSI - according to the
requirements of GB3836.1-2010 and GB3836.2-2010) and meet the requirements of the product
explosion-proof mark, and the installation of the cable entry device, user must follow its
instructions.
EP6 Positioner
Quick Start Guide
IM-P703-05
CTLS Issue 6

IM-P703-05 CTLS Issue 6
EP6 Positioner
Side view
shown for
clarity
1.1 Linear positioner
1. Installation
1.1.1 Assemble the feedback pin locator and feedback pin to the actuator coupling firmly
Mounting
positions
Pin locator
marking
Valve
stroke
MTG
kit
Feedback pin
locator direction
Central N/A
20 EY3
30
50 EY4
70
Left hand side
D20 UY3
A30
B or Q 50 UY1
E70
1.1.2 Assemble the supplied feedback lever, bracket and positioner
firmly, then loosely mount the assembly on the left hand side
of the actuator yoke. For central mount, mount on the right
hand side of the actuator yoke.
1.1.3 Make sure that Positioner’s feedback lever is perpendicular
to the valve stem at 50% of the valve stroke.
1.1.5 At 0% or 100% position, the linear lever or linear lever stopper should not touch the stopping bosses of positioner.
1.1.6 As a final step, tighten the bracket to the actuator yoke.
50%
90°
Lever spring
Feedback pin
Stopping bosses Linear lever stopper
Stopping bosses
Linear lever stopper
No touch
1.1.4 The feedback pin coming from the actuator coupling should
be inserted inside slot of the feedback lever in such a way
that the length of valve stroke coincides with the
corresponding figures in “mm” marked on the feedback lever.
Improper setting may cause poor linerarity or damage to
positioner.

IM-P703-05 CTLS Issue 6
EP6 Positioner
1.2 Rotary positioner
1.2.1 There are two brackets in the positioner box.
1.2.2 Refer to below and check the bolting positions of the upper and lower brackets to be fastened depending on the actuator’s
stem height.
And then assemble the positioner with the brackets by using M6 bolts, washers and nuts.
Actuator stem
Actuator
30 (H)
Positioner bracket
Positioner bracket
Actuator bracket
Actuator bracket
10
20
40 12-ø6.1
12 88
6
80
100
30
30.7
10
80 130
208
45.7
4-ø8.5
70
100
80
10 10
35.5 19.2
202
117
91.8 8
85
45.7
4-ø6.1
For Namur
1.2.3 Make sure that the center of positioner's main shaft is well aligned with the center of actuator's stem.
1.2.4 Tighten the positioner and bracket, taking into account the alignment described in step 3 above.

IM-P703-05 CTLS Issue 6
EP6 Positioner
2. Connection – Air
2.1 Single acting actuator (side mount positioner)
Notes:
-The positioner must only be supplied with instrument air that is free of oil, water, and dust.
-The purity and oil content must meet the requirements of Class 3:3:2 in accordance with ISO 8573-1
2.1.2 Piping and span direction setting for linear RA single actuator
Move upward at pneumatic failure
Reverse action
Note: For central
mount reverse
the span lever
Direct action
Note: For central
mount reverse
the span lever
Supply
When increasing
input signal
DA
actuator
Move downward at pneumatic failure
RA
actuator
When increasing
input signal
Supply
Span
Direct action
Note: For central
mount reverse
the span lever
Reverse action
Note: For central
mount reverse
the span lever
When increasing
input signal
Move downward at pneumatic failure
RA
actuator
Supply
Direct action Reverse action
Bearing
Supply
When increasing
input signal
When increasing
input signal
Span
Cam
Span
Cam
Bearing
Supply
Move upward at pneumatic failure
Supply
DA
actuator
When increasing
input signal
2.1.3 Piping and cam direction setting for rotary single actuator
2.1.1 Piping and span direction setting for linear DA single actuator

IM-P703-05 CTLS Issue 6
EP6 Positioner
2.2 Double acting actuator (side mount positioner)
2.2.1 Piping and cam direction setting for linear double actuator
When increasing
input signal
Direct action
Note: For central mount reverse the Span lever
Supply
Span
When increasing
input signal
Reverse action
Note: For central mount reverse the Span lever
Supply
2.2.2 Piping and cam direction setting for rotary double actuator
Span
Cam
Bearing
Supply
Direct action Reverse action
Span
Cam
Bearing
Supply

IM-P703-05 CTLS Issue 6
EP6 Positioner
3. Connection – Power
It is recommended to use 4-20mA DC current source.
3.2 Non-explosion proof type
Ground (M4)
Spare bolt (M4)
Ground (M4)
Ground
Black
Red
Controller
(AO)
(DCS/PLC sourcing output card)
Controller
(AO)
(DCS/PLC sourcing
output card)
Ground
Ground (M4)
Ground (M4)
Spare bolt
(M4)
Black
Red
3.1 Flameproof enclosure type

IM-P703-05 CTLS Issue 6
EP6 Positioner
4. Adjustments
Operators must wear ear protection when commissioning positioner
4.1 Adjustment - Zero Point
Set input signal at 4mA (or 20mA) as the initial current, then rotate the adjust wheel of zero setting unit upward or downward to
set actuator’s zero point.
Please refer to the figure below.
Lock screw
Lock screw
4.2 Adjustment - Span
4.2.1 After setting zero point, supply input signal at 20mA (or 4mA) as the end point current and check the actuator stroke. If the
stroke is low, the span should be stretched. If the stroke is high, the span should be reduced.
4.2.2 Changing span will affect zero point setting so zero point should be set again after span has been adjusted.
4.2.3 Above two steps are required several times until both zero and span are properly set.
4.2.4 After proper setting, tighten lock screw of the span unit.

IM-P703-05 CTLS Issue 6
EP6 Positioner
Auto manual switch
Manual Auto
4.3 Adjustment – A/M switch (Auto/Manual)
4.3.1 Auto manual switch is located on the top of pilot unit. Auto manual switch allows the positioner to be functioned as by-pass.
If the switch is rotated counterclockwise (toward “M”, Manual), then the supply pressure will be directly supplied to the
actuator through Out1 port of positioner regardless of input signal. On the other hand, if the switch is turned clockwise
(toward “A”, Auto), then the positioner will operate normally by input signal.
4.3.2 Make sure that the supply pressure does not exceed the rated pressure level of the actuator before the switch is loosened
toward “M”.
4.3.3 After using the “Manual” function, return the auto manual switch to “Auto”.

IM-P703-05 CTLS Issue 6
EP6 Positioner
spiraxsarco.com EN
Explosion Proof, Electro-pneumatic Positioner
EP6
0
0
Spirax Sarco Ltd,
Runnings Road
Cheltenham
GL51 9NQ
United Kingdom
2014/30/EU EMC Directive
2014/34/EU ATEX Directive
00
00
EMC Directive EN 61000-6-4:2007 + A1:2011
0EN 61000-6-2:2019
00
ATEX Directive EN IEC 60079-0:2018
0EN 60079-1:2014
0EN 60079-18:2015 + A1:2017
00
00
00
00
Notified Body number Performed Certificate
Element Materials Technology
Rotterdam B.V. Voorerf 18, 4824 GN
Breda Netherlands
2812 Issue of Quality Assurance Notification TRAC13QAN0002
Beureau Veritas Consumer Products
Services Germany GmbH, Oehleckerring
40, Hamburg D-22419
2004 Issue of EC Type examination certificate EPS21ATEX 1 035X
Additional information:
ATEX coding: II 2G Ex db mb IIB T5 Gb
0Ta= -20°C to +60°C
Signed for and on behalf of: Spirax Sarco Ltd,
N Morris
Cheltenham
2022-05-13
GNP234-EU-C/01 issue 4 (EN)
Steam Business Development Engineering
(place and date of issue):
(name, function):
Where applicable, the notified body:
EU DECLARATION OF CONFORMITY
This declaration of conformity is issued under the sole responsibility of the manufacturer.
The object of the declaration described above is in conformity with the relevant Union harmonisation legislation:
References to the relevant harmonised standards used or references to the other technical specifications in relation to which
conformity is declared:
Name and address of the manufacturer or his
authorised representative:
0
0
0
Apparatus model/Product:
(signature):
Compliance Manager
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5. Approvals

IM-P703-05 CTLS Issue 6
EP6 Positioner
spiraxsarco.com
Electro-pneumatic Positioner
EP6
0
0
Spirax Sarco Ltd,
Runnings Road
Cheltenham
GL51 9NQ
United Kingdom
Approved Body number Performed Certificate
0 0 00
0 0 00
Additional information:
0 0
0 0
Signed for and on behalf of: Spirax Sarco Ltd,
N Morris
Compliance Manager
Steam Business Development Engineering
Cheltenham 13 May 2022
GNP234-UK-C/04 issue 2
0
0
0
0
(name, function):
SI 2016 No.1091 *
0
0
0
(*As amended by EU Exit Regulations)
0
0
(place and date of issue):
Where applicable, the approved body:
DECLARATION OF CONFORMITY
This declaration of conformity is issued under the sole responsibility of the manufacturer.
The object of the declaration described above is in conformity with the relevant statutory requirements of:
References to the relevant designated standards used or references to the other technical specifications in relation to which
conformity is declared:
Name and address of the manufacturer or his
authorised representative:
0
0
0
Apparatus model/Product:
(signature):
The Electromagnetic Compatibility Regulations 2016
0
0
0
SI 2016 No.1091 *
0
0
EN 61000-6-4:2007 + A1:2011
EN 61000-6-2:2019
0
0
0
0
0
0
0
0
0
0
0
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