Waukesha Cherry-Burrell
Maintenance
April 2008
95-03083
Page 29
Description of Switch Function
•
The sensor measures the upper edge of the valve spin-
dle.
•
Non-contact and wear-free detection of the valve
positions:
closed
,
open
and the
position for seat lift
(for Mix Proof applications) during the cleaning pro-
cess.
•
It is also possible to monitor the state of the valve
seals for W60/W80 series valves instead of the seat
lift. Due to the high resolution of 0.2 mm, even slight
changes can be detected.
•
Easy and time-saving adjustment by means of “teach-
ing” (reading) the valve positions: The “taught” valve
positions are automatically assigned certain switching
characteristics of the three outputs; several operating
modes are available (see “Programming Guide: Sin-
gle Seat Valves W60/W80/W90” on page 31 or “Pro-
gramming Guide: Double Seat Valves W70 and W60
3-Position Actuator” on page 32).
•
Monitored stroke (detection range) is 3.15" (80 mm).
The condition “valve spindle outside detection range”
is indicated.
•
After adjustment, the unit can be electronically locked
to prevent unauthorized manipulation.
Electrical connection
The unit must be connected by a qualified electrician.
Observe all national and international regulations for the
installation of electrical equipment. Disconnect power
before connecting the unit as shown in Figure 44.
The Set & Forget switch is available for installation in the
2-Piece Control Module or in a switch-only configuration.
Switch-Only Option
The Set & Forget switch is mounted directly to the valve
actuator using a mounting adapter. The body has an o-ring
flange for sealing against water entry. The sensor and
target stem is required on the actuator (Figure 45). All
operations are the same as the module-mounted switch.
A vent at the base of the adapter allows air to escape in the
event of an actuator seal failure and drainage of any
condensed liquids. For a horizontal valve mount, the vent
should be rotated downward. For an inverted installation,
the switch cap can be removed or drilled as required.
Secure the adapter to the actuator with cap screws. Secure
the switch to the adapter with screws, ensuring the proper
placement of the o-ring. Do not over-tighten.
A 5-pin male connector is standard (Figure 46). Refer to
Figure 44 for input mapping.
Closed*
Seat lift
Open*
A. Active detection
range of the
sensor
B. Closed position
is taught
C. Position seat lift
is taught
D. Open position is
taught
* The valve positions Open and Closed may also be reversed
Figure 43: Application Example
VA100-559A
A
B
VA100-559B
C
VA100-559C
D
5: OUT1 = seat
2: OUT2 = close
4: OUT3 = open
Figure 44: Electrical Input Mapping
Figure 45: Actuator
Figure 46: 5-pin connector
VA100-693
2
1
5
4
3