NOTE
: Do not exceed 24 VDC at the input of the EZ-3u controller. Doing so may cause the on-
board regulator to overhead and shut-down, preventing operation of the controller. When in doubt,
use a regulated power supply.
EZ-3micro Connections & Controls
A.
Power input: 2.1mm barrel jack; 12 to 24 VDC
K.
OFF time potentiometer
B.
Power input pads: 12 to 24 VDC
L.
High-current pulse output (valve, relay, etc.)
C.
Power switch (OFF / Configure / Run)
M.
Open-collector/5V pulse output (audio player)
D.
Switched power output
N.
OC/5V configuration jumper
E.
Start input: dry contact
O
Normally-closed relay output
F.
Start input: 12 to 24 VDC
P.
Normally-open relay output
G.
Start input: PIR
Q.
Pot configuration jumper
H
Start input: manual button
R.
Programming header (for hackers; see note)
I.
PRE delay potentiometer
J.
RUN time potentiometer
NOTE
: While a programming header is provided for advanced users interested in hacking the
EZ-3u for their own purposes, EFX-TEK provides no support for hacking beyond a schematic for
the product. Schematic is available from
www.efx-tek.com
.
Power Input
The EZ-3u is powered from 12 to 24 volts DC. DC power may be connected to via the 2.1mm power jack (A)
or through the V+ and GND pads (B) located just above the power jack. When the power switch (C) is in
position 2 (Run) the input power is routed to the V+ and GND output terminal block (D); this can be useful for
providing power to the relay contacts or sharing power with other devices (e.g., audio controller).
2
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