Basic HTML Version
actuators and accessories
196
|
VICI AG International Sales: + 41–41–925–6200 Fax: + 41–41–925–6201
|
www.vici.com
Digital Valve Sequence Programmer (DVSP)
more information
Actuators
Air . . . . pages 194-195
Microelectric . . 188-191
Standard elec . . . . 193
Controllers and
Interfaces
HSSA . . . . . . . . 198
High speed
switching accessory
PFAF . . . . . . . . . 199
Position feedback
for air actuators
PFW/PFC . . . . . . 199
Position feedback
for manual valves
Mounting Hardware
Closemount
hardware . . page 208
Right angle drive . . . 204
Standoff assembly . . 205
Standoff mounting
hardware . . . . . 205
The digital valve sequence
programmer (DVSP) is an add-on
or stand-alone timer/programmer
with 4 intervals, settable in ranges of
0-99 seconds, 0-9.9 minutes, or 0-99
minutes. The DVSP is most commonly
used for remote operation of electrical
devices such as solenoid valves, Valco
two position or multiposition electric
actuators, and the Valco DVI (digital
valve interface), which converts
contact closures into pneumatic pulses
for switching Valco two position air
actuators.
The DVSP has two operational
modes: in the AUTO mode, the DVSP
will return to the first interval and
begin another sequence after the
last interval is completed, and in the
SINGLE CYCLE mode it stops after
completing one sequence. During
a cycle or sequence, simple controls
allow the user to stop the cycle, reset it
to Interval 1, switch to the AUTO mode,
or advance to the next interval. The
DVSP can also be wired for remote
operation by contact closure from a
data system or other control device.
Each interval has one double pole,
double throw relay, rated at 5 amps,
which provides two sets of contacts
with no connection from one side to
the other. This means that a single
interval can be used to perform two
separate functions requiring differing
voltage requirements. For example,
one side of Relay A (Interval 1) can be
used to switch an electric actuator
(contact closure) while the other
side is connected to 110/230 VAC
and switches a 110/230 VAC solenoid
valve at the same time as the electric
actuator. In addition, Relay E supplies
a two second contact. When solenoid
valves are wired in series with this
relay the result is “pulsed operation”
of the air actuator, which avoids the
potential valve and actuator problems
associated with continuously-applied
air pressure.
Both 12 VDC and 110/230 VAC power
supplies are included within the DVSP,
but the relays may be supplied with
power from an external power source.
For example, 24 VDC solenoid valves
can be switched by the DVSP relays if
the 24 volts is supplied to the relays
from an external 24 VDC power supply.
DVSP
for all air and
Digital valve sequence programmer
electric actuators
Prod No
110 VAC
DVSP4
230 VAC
DVSP4-220
CHROMalytic TECHnology Pty Ltd AUSTRALIAN Distributors e-mail: sales@chromtech.net.au Tel: 03 9762 2034