Flowserve 10-40 39 ACCESS M Mounted Limit Switch - Manual (Page 3)

3 14848-A
Flow Control Division
Worcester Actuation Systems
4. With assembly complete to this point, it is convenient to make
conduit connections and bring wiring through enclosure. The
power supply to the solenoid coil is 3 watts. Required amperage
is shown below. It should be noted that the successful use of this
device in hazardous, wet, or other detrimental environments
depends on proper conduit construction techniques.
Voltage Holding Amps
24 VDC .13
5. When the switch package is assembled, one of the probes will
make contact with the switch button. Simply press the switch
package until the mounting screws can be engaged. Tighten
mounting screws until bracket is secure.
6. Switches/sensors (if installed) have been factory adjusted, but
should be rechecked after installation. Adjustment is as follows:
a. With actuator mounted in “standard” “FAIL CLOSED” mounting
configuration (see step 1) and wired per appropriate wiring
diagram, set actuator in the full closed position, with the
adjustment screw near its loose limit. The Orange LED indicating
solenoid coil continuity will not be lit. The Orange LED will remain
off as long as the Yellow LED is off. The orange LED will come on
when the coil is energized and there is no short or open in the
solenoid coil circuit. If there is a short circuit or open circuit with
the coil, the Orange LED will remain off even though the yellow
LED indicates that power is applied to the coil circuit. Adjust
closed position switch or Namur Proximity Sensor SW-2 (see
wiring diagram) by tightening the adjustment screw until red LED
turns on. Then tighten the adjustment screw one additional turn.
With air supplied to actuator, energize the solenoid and cycle
valve to full open position. The Yellow and Orange LEDs should
be lit indicating power to the coil and coil continuity, respectively.
Adjust the open position switch/sensor SW-1 in the same manner
as the closed position switch/sensor until the green LED turns on.
Then tighten the adjustment screw one additional turn. When the
solenoid is de-energized, the actuator will return to its full closed
position. The Yellow, Orange, and Green LEDs will turn off
indicating that the solenoid is de-energized and the actuator is no
longer in the full open position. The Red LED will turn on
indicating that the actuator is now in the full closed position.
b. For actuator mounted in fail open mounting configuration (see
step 1) and wired per appropriate wiring diagram, set actuator in
the open position with the adjustment screw near its loose limit.
Adjust open position switch or Namur Proximity Sensor SW-2 by
tightening the adjustment screw until the green LED turns on.
Then tighten the adjustment screw one additional turn. With air
supplied to actuator, energize the solenoid to change actuator to
the full closed position. The green LED will shut off and the yellow
and orange LEDs should be lit indicating power to the coil, and
coil continuity, respectively.
Adjust the closed position switch/sensor SW-1 in the same
manner as the open position switch/sensor until the Red LED
turns on. Then tighten the adjustment screw one additional turn.
When the solenoid is de-energized, the actuator will return to its
full open position. The Yellow, Orange, and Red LEDs will turn off
indicating that the solenoid is de-energized and that the actuator is
no longer in the full closed position and then Green LED will turn
on indicating that the actuator is now in the full open position.
NOTE: If actuator is mounted in any configuration other than
“standard”, consult Step 1 of Installation Instructions to insure
proper orientation of probes and switches/sensors.
7. Wiring instructions for limit switches and proximity sensors. Refer
to Step 1 for any actuator mounting configuration other than
“standard”.
A. Limit switch/Proximity Sensor Ratings:
Mechanical Switch - 15.1 amps @ 125/250 VAC; .5 amps @ 125
VDC.
Namur proximity Sensor - ≤ 1 mA (target present), ≥ 3 mA
(Target absent) 15 mA max., 5-25 VDC, sensing range 2 mm,
switching frequency 1 Khz. Not sensitive to polarity.
Make electrical connections in accordance with the appropriate
wiring diagram on inside of cover or below.
8. Cover Assembly: Place the lubricated “O-Ring” down over the
threaded section of the housing onto the machined shoulder. The
cover must be threaded onto housing tightly for proper
performance. The assembly is now complete.
NOTE: For units with a metal cover, a light coat of grease (such as a
#1 grease) shall be applied to the cover threads. A minimum of 1/3
the circumference of the threads to be lubricated.
Figure 1
Figure 2