SPX APV DELTA SDU4, Operating Manual, Page: 9 / 39

4. Auxiliary Equipment
- Valve position indication
A proximity switch holder for the valve position indication can be
installed direct on the actuator.
With SDU4 valves being equipped with valve position indication it
must be observed that the max. closing pressure is reduced
compared with the valve design being equipped with the
control unit DELTA CU21N.
(see table item 8)
Proximity switches to signal the limit position of the valve seat can
be installed at the proximity switch holder if requested.
We recommend to use one of our APV standard types:
operating distance: 5 mm / diameter: 11 mm.
If the customer decides for a valve position indication other than
APV type, we cannot take over any guarantee for a faultless
function.
- Control Unit
The Control Unit CU2 can be installed on the SDU4 valve.
The following different designs are possible:
4
Double Seal Change-Over Valves
Delta SDU 4
Operating Manual Rev. 1
1 solenoid valve 1 solenoid valve
w ith N O T elem ent
standard C U
ref.-N o.:
C U 21
322 000 804 432
C U 21 N
322 000 804 440
Valve N et Profibus
ref.-N o.:
C U 21 V
322 000 804 437
C U 21 VN
322 000 804 442
A S – Interface
ref.-N o.:
C U 21 A S - Interface
322 000 804 578
C U 21 N A S - Interface
322 000 804 579
adapter
designation :
ref.-N o.:
C U 2 adapter - S W 4 / S D 4 / M 4
322 000 801 192
- An adapter is required to install the control unit on the SD4 valve.
UK