aci INTERFACE Series Installation & Operation Instructions

INTERFACE SERIES
Installation & Operation Instructions
EPW
GENERAL INFORMATION
The EPW converts a pulse or digital PWM signal
into a proportional pneumatic signal ranging from
0 to 20 psig. The pneumatic output is proportional
to the signal input, either direct or reverse acting,
and features a manual override potentiometer to
vary the pneumatic output. The EPW o ers four
jumper selectable input timing ranges (see
ordering grid below). Output pressure ranges are
jumper shunt selectable for 0-10, 0-15 and 0-20
psig, and adjustable in all ranges. A 0-5 VDC
feedback signal indicating the resultant branch line
pressure is also provided. This signal varies linearly
with the branch pressure range selected. The EPW
is a constant bleed interface with branch exhaust
responce time determinded by the bleed ori ce
size and pressure di erentials. If power fails to the
EPW, it will continure to bleed through the bleed
ori ce until branch pressure is zero psig.
MOUNTING INSTRUCTIONS
Circuit board may be mounted in any position. If
circuit board slides out of snap track, a
non-conductive "stop" may be required. Use only
ngers to remove board from snap track. Slide
out of snap track or push against side of snap
track and lift that side of the circuit board to
remove. Do not flex board or use tools.
WIRING INSTRUCTIONS
PRECAUTIONS
• Remove power before wiring. Never
connect or disconnect wiring with power
applied.
• When using a shielded cable, ground the
shield only at the controller end. Grounding
both ends can cause a ground loop.
• It is recommended you use an isolated
UL-listed class 2 transformer when powering
the unit with 24 VAC. Failure to wire the
devices with the correct polarity when
sharing transformers may result in damage
to any device powered by the shared
transformer.
• If the 24 VDC or 24VAC power is shared with
devices that have coils such as relays,
solenoids, or other inductors, each coil must
have an MOV, DC/AC Transorb, Transient
Voltage Suppressor (ACI Part: 142583), or
diode placed across the coil or inductor. The
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com
FIGURE 1: DIMENSIONS
EPW
4.00" (101.60mm)
3.25"
(82.55mm)
3.25" (82.55mm)
EPW With Gauge
3.74" (94.92mm)
Page 1
Phone: 1-888-967-5224
Website: workaci.com
0.70"
(17.78mm)
2.70"
(68.58mm)
4.00"
(101.60mm)
2.95" (74.93mm)
Ø1.64"
(41.66mm)
Version: 4.0
I0000182