Asco 290 Series Installation And Maintenance Instructions Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
SIGNALLING UNIT ON SERIES 290-390
OPTICAL POSITION INDICATOR FOR DIA. 32 mm OPERATOR
DESCRIPTION AND OPERATION
All series 290 and 390, with 32 -50 mm dia. operators (NC
only) as well as with 63, 90 and 125 mm dia. operators (NC
and NO), can be equipped with a signaling unit enabling
electrical monitoring of one or both valve stem positions.
This fi tting consists of a support for mounting reed switch and
magneto-resistive detectors.
At both valve rod positions (open and closed), the magnet at
the end of the plunger of the unit actuates, without contact, the
reed switch or creates a switching signal (magneto-resistive)
which provides an electrical end-of-travel signal.
Detector support supplied installed on valve: if possible,
orient the valve operator in a direction facilitating connection
of the detectors, then perform the operations described under
"installation and adjustment of detectors" following page.
Fitting supplied separately: perform all the stages of instal-
lation, connection and adjustment described in this document.
INSTALLATION
! Make sure that the pilot is disconnected from its
control system and that the valve is depressurized and
drained.
Installation and adjustment of detectors
Install one or two detectors as appropriate.
1. Position the detector or detectors with the cable inlet ori-
ented upwards (fi g. G and J).
2. Slide each detector, observing its fully up or fully down
position (fi g. H and K).
3. Connect the connector or connectors then energise them.
Adjustment of the down position of the detector:
- Place the valve in the "closed" position.
. For a normally-closed valve, this is its rest position
. For a normally-open valve, apply the pilot pressure
(max. 10 bar)
- Manually move the detector until the LED comes on (fi g.
I). Tighten the mounting screw at 270° (approx. 3/4 turn),
which corresponds to torque "c", while maintaining the
detector in place (fi g. I).
- Check adjustment by a number of operating tests.
Adjustment of up position of the detector:
- Place the valve in the "open" position.
. For a normally-closed valve, apply the pilot pressure
(max. 10 bar)
. For a normally-open valve, this is its rest position
- Manually move the detector until the LED comes
on (fi g. L). Tighten the mounting screw at 270° (ap-
prox. 3/4 turn), which corresponds to torque "c",
while maintaining the detector in place (fig. L).
- Check adjustment by a number of operating tests.
! The optical position indicator or the detector support
can be adapted to a valve originally not equipped with such
features. This adaption is not allowed for use according to
ATEX 94/9/EC. In such case, the accessories are supplied
factory installed and adjusted.
According to use, install the optical position indicator or the
detector support for the signaling unit.
Mounting of optical position indicator/detector support
on valve with dia. 32 mm operator:
1. Hold the actuator tightly.
2. Unscrew the cover using a 22 mm wrench (  A1).
3. Take care not to lose the spring (  A2).
4. Install the detector support or the optical position indicator
on the stem (  A3). Tighten down (  A4) at the following
tightening torques:
- signaling support: 1 ±0,5 Nm (DN 10-15) /1,1 ±0,5 Nm (DN 20)
- optical position indicator 0,8 ±0,1 Nm (DN 10-15)/0,9 ±0,1 Nm (DN 20)
5. Put the spring back in place (  A5).
6. Fix the newly assembled cover on the actuator at a tightening
torque of 10 ±0,1 Nm (  A6 and A7).
Mounting of detector support on valve with dia. 50, 63,
90 and 125 mm operators:
Removal of the sight dome
1. 50 mm dia. operator: Unscrew and remove the cap (fi g.
A1).
63, 90 and 125 mm dia. operators: Unscew and remove
the sight dome and its seal (fi g. A2)
2. 63, 90 and 125 mm operators: Unscrew and remove the
red indicator (fi g. B).
Installation of signaling unit
1. The unit is supplied with a single plunger for all valve types
(fi g. C). The dia 125 mm is supplied with a spacer to be
screwed to the plunger (fi g. C1).
2. Screw the plunger manually into the valve stem (fi g. D),
then tighten it to torque "a" (fi g. E).
3. 63, 90 and 125 mm operators: Check that seal item X on
the support is greased (normal condition of supply). Install
the seal in its housing in the control operator (fi g. F).
Screw on the signaling support and tighten to torque "b"
(fi g. F).
The support cannot be oriented.
MAINTENANCE
! Before any maintenance or reconditioning is per-
formed, disconnect the pilot from its control system, and
depressurise and drain the valve.
For work on the valve itself, refer to the corresponding instal-
lation and maintenance instructions.
Preventive maintenance
Visually inspect the signaling unit once a month.
Check:
- that there are no foreign objects on the support or between
the detectors,
- that the support is correctly secured against rotation.
NOTE: the assembled signaling unit meets IP65 when the
seal is correctly fi tted (Reed detectors are IP67. Magneto-
resistive detectors are IP67 or IP69K).
! Do not install the signaling unit in an area where
welding is carried out, to avoid any magnetic distur-
bance. In such environments, preferably use electrical
units with mechanical contacts.
Malfunctioning
In the event of failure to detect the open or closed position:
- if, during an operating cycle, the plunger does not move
or moves abnormally:
• check pressures (valve and pilot),
• check vibration of the valve and its control system,
- if the plunger moves correctly:
• check the electrical supply to the detectors,
• check the adjustment of the detector positions on the
support.
Removal and re-installation of the signaling unit
Removal is carried out in reverse order of installation, taking
the following precautions:
- disconnect the detectors from the electrical supply and
remove them,
To re-install, scrupulously follow the "Installation, connection
and adjustment" procedure described in this document.
! To avoid any harm or damage, check that the valve
operates correctly before returning to service. Check
that there are no internal leaks (valve seats) or external
leaks using a non-explosive and non-fl ammable fl uid.c
2
INSTALLATION AND MAINTENANCE INSTRUCTIONS
GB
CONNECTION AND ADJUSTMENT: Electrical connection must be carried out by qualifi ed staff in accordance with local
Adjustment
See detector "up" and "down" position adjustment in this document. The detectors do not require any other adapter than
the signalling unit support.
REED SWITCH DETECTORS (2 WIRES)
SERIES REED
DETECTOR CHARACTERISTICS
Max. switching power
Switching voltage
Max. switching current
Short-circuit protection
Reverse polarity protection
Overload protection
Voltage drop (EN 60947-5-2)
Breakdown voltage
Contact resistance
Insulation resistance
Sensitivity
Response time
Repeatability
Working temperature
Degree of protection
Protection class
Signal indication
3 1
4
30 mm
3 1
4
1
3 4
Other information:
See the specifi c leafl et supplied with each detector.
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SIGNALLING UNIT ON SERIES 290-390
standards and regulations.
MAGNETO-RESISTIVE SWITCH DETECTORS (MR) (3 WIRES)
DETECTOR CHARACTERISTICS
DC = 5 W - AC = 5 VA Max. switching power
5..120V AC/DC or 5..50/60V AC/DC Switching voltage
100 mA Max. switching current
no
Wiring
yes Reverse polarity protection
(without LED function)
Overload protection
no
Short-circuit protection
< 5 volt
Voltage drop (EN 60947-5-2)
230 V DC
0,2 ohm max. Max. leakage current
8
10 ohms at 100 V Max. allowable overvoltage
2,1 mTesla (21 Gauss) Sensitivity
0,1 ms opening
Response time
0,6 ms closing
< ± 0,2 mm Repeatability
- 25°C , + 70°C Working temperature
IP 67 Degree of protection
cable outlet: class II, M8 and Protection class
M12 connection: class III
Signal indication
yellow diode (LED) • Output protected against short-circuit as long as the out-
put current is restricted to 0.1 A.
• Improper wire connection may prevent the detector from
5 to 120 V AC/DC
PUR lead outlet Ø 3 mm with operating or even destroy it.
• It is recommended to install a protection diode (mounted
stripped ends,
in parallel) on an inductive load in spite of the internal pro-
2 wires 0.14 mm 2 - brown wire
tection.
= +
blue wire = -
• Polarities to be observed.
2 m = REED-FL2-00
5 m = REED-FL5-00
PNP
brown
black
5 to 50 V AC
blue
5 to 60 V DC
PUR lead outlet Ø 3 mm with
3-pin plug-in male
connector + screw Ø 8 mm (2
pins connected, 1 and 4)
0,3 m = REED-QDS-M8E
PUR lead outlet Ø 3 mm with
3-pin plug-in male
connector + screw Ø 8 mm (2
pins connected, 1 and 3)
0,3 m = REED-QDS-M8U
PUR lead outlet Ø 3 mm resist-
25 mm
ant to cutting fl uids, with
3-pin screw-type male connec-
tor, Ø M12 (2 pins connected, 1
and 4)
0,3 m = REED-QDS-M12E
3
GB
SERIES PNP-NPN
3 W
10 to 30 V DC
100 mA
PNP - NPN
yes
yes
yes
< 1,5 V (I = 50 mA)
< 2,5 V (I = 100 mA)
< 50 µA
32 VCC max. (100 ms)
2 mTesla (20 Gauss)
110 µs opening
220 µs closing
< 0,2 mm
- 25°C , + 85°C
IP67 /IP69K
class III
yellow diode (LED)
NPN
brown
1 1
+ +
4 black load
4
load
blue
_ _
3 3
10 to 30 V DC
PUR lead outlet Ø 3 mm,
stripped ends
3 wires 0.14 mm 2
- Brown wire : +
- Blue wire : -
- Black wire : load
2 m (PNP) = PNP-FL2-00-U
2 m (NPN) = NPN-FL2-00-U
5 m (PNP) = PNP-FL5-00
PUR lead outlet Ø 3 mm with
3-pin plug-in male + connector +
screw Ø M8
3 1
4
+
0,3 m (PNP) = PNP-QDS-M8-U
_
0,3 m (NPN) = NPN-QDS-M8-U
PUR lead outlet Ø 3 mm resist-
ant to cutting fl uids,
with 3-pin screw-type male con-
1
3 4
nector Ø M12
+
_
0,3 m (PNP/IP67) = PNP-QDS-M12
0,3 m (PNP/IP69K) = PNP-QDS-M12-F
3834953