Manual

N/O OUTPUT
(pin #6)
H
L
H
L
Off
L
H
L
H
On
L
L
L*
L*
On
H
L
H
On
H
L
H
On
L
H
L
Off
X
NC
NC
NC
X
NC
NC
NC
H = logic HIGH
L = logic LOW
X = either HIGH or LOW (does not matter)
= HIGH to LOW transition
= LOW to HIGH transition
NC = no change of state
RESET (pin #1)
SET (pin #2)
SET-RESET LATCH MODE
(no connections to INPUT or INHIBIT)
Input Polarity:
L
H
L
Off
*NOTE: both outputs
conduct in this
condition (*).
*
OUTPUT


SET


RESET
OUTPUT
(at pin #5)

INPUT
NOTE: Connect pin #8 (INHIBIT) to
pin #6 (N/O Output)
OUTPUT


INPUT


RESET
Set/reset latch mode, MA4L:
Edge-triggered latch mode, MA4L:
Flip-op (÷2) logic, MA4L:
MICRO-AMP
®
model MA4L offers two latching logic modes. It can be latched and
unlatched with low-going signals to its SET and RESET inputs. It also will function as an
edge-triggered "D" ip-op latch when signals are presented to its INPUT pin. The edge-
triggered latch may be interrogated with a second signal at the INHIBIT or the RESET pin.
In this mode, the MA4L is very useful in inspection/rejection applications. The MA4L may
also be wired for alternate-action divide-by-two logic (see logic diagram, below).
The MA4L directly accepts the outputs of other Banner MICRO-AMP modules plus the
NPN (current sinking) output of self-contained dc sensors in the following Banner families:
OMNI-BEAM, MULTI-BEAM, MAXI-BEAM, VALU-BEAM, MINI-BEAM, ECONO-
BEAM, QØ8, Q19, Q25, S18, SM3Ø, C3Ø, and SM512 Series.
SUPPLY VOLTAGE: 10 to 30V dc at less than 20 milliamps (exclu-
sive of load); 10% maximum ripple.
INPUTS: INPUT, INHIBIT, RESET, and SET signals are buffered
for 1-millisecond response. A logic "low" must be less than 2V dc.
A logic "high" is at least 6V dc or an open circuit. Inputs must be
capable of sinking at least 4 milliamps. Inputs may be derived from
limit switches or from dc sensors with NPN (current sinking) output
transistors. INPUT signal polarity is selectable for either high-going
or low-going transition.
OUTPUT CONFIGURATION: two open-collector NPN transistors
with complementary outputs (one normally open, one normally closed).
Maximum sinking current 150 milliamps, each output. Saturation
voltage less than 0.5V dc at 10 milliamps. Off-state leakage current
less than 1 microamp.
RESPONSE SPEED: all inputs will respond to a low signal or a high
signal of 1 millisecond duration or longer.
CIRCUIT PROTECTION: reverse voltage polarity protected. Latch
comes up reset after power-up.
SELECTOR SWITCH: single-turn potentiometer selects response
polarity of INPUT. Fully clockwise = high-going transition; fully
counterclockwise = low-going transition.
INDICATOR: red LED indicator on the top of the module lights
whenever the N/O output is conducting.
MICRO-AMP MA4L Specications
CONSTRUCTION: totally encapsulated plug-in package with
molded VALOX
®
housing. Gold-ashed connection pins.
OPERATING TEMPERATURE:
0 to 70 degrees C (32 to 158 degrees F).
MICRO-AMP
®
System
MA4L Latch Logic Module
N/O OUTPUT
(pin #6)
N/C OUTPUT
(pin #5)
INPUT (pin #7)
Indicator LED
N/C OUTPUT
(pin #5)
Indicator LED
Hookup Diagram, MA4L LATCH Module
Functional Schematic MA4L LATCH Module
EDGE-TRIGGERED LATCH MODE
(no connections to SET)
INHIBIT (pin #8) or
RESET (pin #1)
Logic Truth Tables
TRUTH TABLE KEY
P/N 03352F3CPrinted in USA
NOTE: Jumper pin #8 (INHIBIT) to
pin #6 (N/O Output)