Spirax Sarco SP2 Manuel utilisateur
IM-P343-22 CH Issue 2 1
SP2 Options
Installation and Maintenance Instructions
IM-P343-22
CH Issue 2
3439152/2
1. General
safety information
2. Options
3. Electrical connections
4. Programming and
commissioning
travel switches
5. Fitting a filter pl g kit
50%
SP2
Printed in the UK © Copyright 2002
IM-P343-22 CH Issue 2
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IM-P343-22 CH Issue 2 3
1. General safety information
YourattentionisdrawntoSafetyInformationLeafletIM-GCM-10,aswellastoanyNational
or Regional regulations.
1.1 Electrical safety requirements
The SP2 is a class III product which must only be powered from Safe Extra Low Voltage
(SELV) sources whether by virtue of a 4 - 20 mA control signal or from a separate power
supply.Similarly allsignalcircuits connectedtoan optionsboardmust operatewithinthe
confines of SELV systems. All associated wiring must be separated from other wiring
containing hazardous voltages.
1.2 Electromagnetic compatibility
The product complies with the Electromagnetic Compatibility Directive 89/336 EEC by
meeting standards EN 5008-1 (Emissions) and EN 50082-2 (Industrial Immunity). This
product may be affected by interference above the limits within EN 50082-2 if:
-The product or its wiring is located near a radio transmitter. The actual separation
necessary will vary according to the power of the transmitter.
-Cellular telephones or mobile radios are used within approximately one metre of the
product or its wiring.
-The wiring is routed alongside power cables subject to high voltage transients or
current surges.
IM-P343-22 CH Issue 2
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2. Options
Fig. 1 Options PCB
2.1 Available options
2.1.1 Software travel switches
Two software configured travel switches supplied on a standard options PCB.
The travel switch 1 (TS1) is normally open and the travel switch 2 (TS2) is normally closed.
2.1.2 Pepperl and Fuchs mechanical travel switches
Two mechanical proximity travel switches plus standard options PCB board.
2.1.3 4 - 20 mA retransmit
4 - 20 mA retransmission of actual valve position (as measured in autostroke - AUTOS) plus
standard options board having two software configured travel switches or connections for Pepperl
and Fuchs mechanical proximity travel switches.
Note: Options boards are individually electrically isolated and externally powered.
2.2 Fitting the options board
2.2.1 Firstly set the yellow slide switch as follows (refer to Fig. 1):
If the options PCB is used for software configured travel switches, set all elements of the
yellow slide switch SW1 to position 'A'. Prepare the ribbon cable by ensuring that the
connector is at right angles to the options PCB, ready for insertion into the main PCB
socket (refer to Fig. 1).
SW1 switch set
in position A
Earth
connection
fitted with
4 - 20 mA
option only
Terminal block
Ribbon
cable
connector
2.2.2 To gain easy access for fitting the options board remove the indicator disc domed nut,
washer and travel indicator disc.
IM-P343-22 CH Issue 2 5
Fig. 3
2.2.4 Locate the edge of the options PCB in the two cast-in location lugs at the base of the
SP2 case (refer to Fig. 3).
2.2.5 Push the connector on the ribbon cable into the socket on the main PCB.
Note: this should be done with light finger pressure only, do not apply force.
Cast in
location
lugs
Fig. 2
Retaining
clamp Retaining
clamp
2.2.3 Loosen the two plastic retaining clamps within the SP2 housing (refer to Fig. 2).
IM-P343-22 CH Issue 2
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Fig. 4
Retaining
clips
Earth
connection
(4 - 20 mA
option only)
2.2.6 Secure the options PCB in place by locating the two retaining clips and tighten the fixing
screws. Note: with the retaining clips secured, there will be some float of the PCB
(refer to Fig. 4).
2.2.7 Options boards having 4 - 20 mA retransmit are provided with an earth connection.
Using the M4 screw, secure the earth wire to adjacent pillar removing any excess paint
thatmaybepresent.Thesamepillarshouldbeusedforboththe4 20mAPCBandPepperl
and Fuchs switch earth connections if necessary.
2.2.8 Make electrical connections to terminals as required. Refer to Section 3 'Electrical
connection' for details of wiring connections.
2.2.9 Refit the travel indicator disc, washer and domed nut.
IM-P343-22 CH Issue 2 7
2.3 FittingPepperlandFuchsmechanicalproximityswitches
2.3.1 Fitting of Pepperl and Fuchs switch assembly. Refer to Fig. 5 for components and
Fig. 6 for general assembly.
Fig. 5 Pepperl and Fuchs switch assembly kit components
No. Description Quantity
1Support plate 1
2Spacer 1
3Spacer 1
4Adjustment
plate 2
5Switch sensor 2
6Switch vane 2
7Fixings 2
8Screws (M4 x 8) 1
9Adjustment
screw 2
10 'O' ring 1
11 Earth adaptor
screw 1
12 Extension
spindle 1
13 Spindle 1
14 Washer 2
15 Domed nut 1
16 Indicator disc 1
17 Washer 2
2.3.2 Prepare the assembly kit by unscrewing the extension spindle (12) and remove the two
switch vanes (6). Remove the spindle (13) ensuring that the 'O' ring (10) remains in place.
16
7
11
1
17
2
13
12
15
14
10
3
8
9
1
PF2
5
6
4
PF1
Fig. 6 General assembly
6
9
IM-P343-22 CH Issue 2
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2.3.6 Fit the Pepperl and Fuchs support plate (1) aligning central holes to pass over spindle
(13). Note: the support plate will only locate in one orientation.
2.3.7 Use earth adapter screw (11) and M4 x 8 screw (8) and tighten to locate the support
plate (1) (refer to Fig. 8).
Fig. 7
Spindle (13)
2.3.3 Ensure that the electrical and pneumatic supplies to the positioners are isolated. To fit
the Pepperl and Fuchs switches it is recommended that the SP2 positioner is removed
from the valve / actuator assembly and fitting is carried out on a clean flat surface.
2.3.4 Prepare the SP2 by removing the indicator disc domed nut, washers, indicator disc and
spindle. Remove existing M4 x 8 screw from the SP2 earth pillar.
2.3.5 Screw new spindle (13) onto existing central pin (refer to Fig. 7) using a 7 mm spanner.
Fig. 8
Potentiometer
mounting
bracket
Support
plate (1)
Earth
adaptor
screw (11)
M4 x 8
screw (8)
IM-P343-22 CH Issue 2 9
2.3.8 It is now necessary to fit the options board. Firstly ensure all elements of the yellow
changeover switch SW1 are set at position 'B'. Prepare the ribbon cable by ensuring
that the connector is at right angles to the options PCB, ready for insertion into the main
PCB socket, (only required with 4 - 20 mA retransmit option). Plug the Pepperl and Fuchs
switch sockets onto the options board connectors. The PF1 socket should be engaged in
the PF1 connector. The PF2 socket should be connected to the PF2 connector (refer to
Fig. 9a).
Fig. 9a
PF1 socket
connection
PF2 socket
connection
SW1 set at position B
Ribbon cable
connector
Potentiometer
mounting
bracket
PF1 switch
sensor
PF2 switch
sensor
Fig. 9b
2.3.9 Secure the PF2 switch connector wire behind the potentiometer mounting bracket
(refer to Fig. 9b).
IM-P343-22 CH Issue 2
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Fig. 10
2.3.11 The earth cable should now be reconnected to the earth adaptor (11) and secured using
the original M4 x 8 screw (refer to Fig. 11). When correctly located, the plastic retaining
clamps can be tightened to secure the options board in place. Note: With the retaining
clips secured there will be some float of the PCB.
Fig. 11
Earth
connection Ribbon cable
connector
located on
main PCB
Retaining clips
2.3.10 Loosen the option board plastic retaining clamps. Now locate the options board within
the SP2 enclosure ensuring it is correctly located within the lugs at the bottom of the
housing (refer to Fig. 10). Note: the options board should be located with terminal
connectors at the top. Location lugs
2.3.12 Prepare the ribbon cable by ensuring it is at right angles to the options PCB. Engage
the ribbon connector onto the main PCB socket permanently pushing in place
to locate. This should be done with light finger pressure only (refer to Fig. 11) do
not apply force, (only required with 4 - 20 mA retransmit and software switch options).
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