aci Zero - Wiring Instructions; Wiring Connections; Pressure Connections; Zero Adjustment

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com
Page 2
WIRING INSTRUCTIONS
Shielded cable with 16 to 22AWG conductors is recom-
mended. Use the Wiring Connections table below to
determine the proper wiring for your application.
Insert the wire into the depluggable terminal block
sockets and tighten the screws. In some circumstanc-
es, it may be easier to remove the terminal blocks
while connecting the wires. Refer to TABLE 1 (below).
PRESSURE CONNECTIONS
The recommended connection tubing is ¼” O.D.
push-on tubing (1/8” – 3/16” I.D.). ACI recommends to
keep the tubing runs as short as possible so as to not
aect the response time.
ZERO ADJUSTMENT
Small positive or negative pressure osets can be removed using the Zero push button. Make sure that there is no pressure
at the HI and LO pressure ttings. Additionally, a small piece of tubing can be connected between the HI and LO brass ttings
to neutralize any external pressure eects. Press and hold the Zero button for 5 seconds. MLP2 will enter zero mode AFTER
push button is released. The Zero adjustment should only be performed with no pressure applied.
Version 6.0
I0000791
A/SPT
A/VPT
FILTER
DIRECTION
OF AIR FLOW
POLY TUBING
FIGURE 3: DUCT ASSEMBLY
TABLE 1: WIRING CONNECTIONS
OUTPUT SIGNAL
VDC
mA
mA
SUPPLY VOLTAGE
AC/DC
AC
DC
OUT
OUT
OUT
GND
GND
- - - - -
VIN
VIN
VIN
WIRE CONNECTIONS