Banner MAXI-AMP Series User Manual
Maxi-amp, Ci3rc2, Current trip point module

SUPPLY VOLTAGE: 105 to 130 or 210 to 250V ac, 50/60 Hz (8VA)
OUTPUT CONFIGURATION:
SPDT electromechanical relay:
Contact rating: 250V ac maximum, 24V dc maximum, 5 amps maximum
(resistive load), 1/10 HP at 240V ac. Install transient suppressor (MOV)
across contacts which switch inductive loads.
Closure time: 10 milliseconds maximum.
Release time: 10 milliseconds maximum.
Maximum switching speed: 20 operations/second.
Mechanical life: 20,000,000 operations
Solid-state dc relay: SPST optically-coupled transistor;
30V dc maximum, 20mA maximum.
EMITTER POWER: +24V dc at 25 mA maximum available at
module pin #3.
INPUTS:
Trip point for output "OFF":
≤
10 milliamps
Trip point for output "ON":
≥
20 milliamps
Trip point range for input overload indication: 30mA
≤
I
≤
80mA.
INDICATOR LEDs:
OUTPUT "ON" and INPUT overload/short.
OPERATING TEMPERATURE: 0 to 50
°
C (32 to 122
°
F).
CONSTRUCTION: rugged NORYL
®
polyphenylene oxide (PPO
®
)
housing, 1.6" x 2.3" x 4". Standard round-pin 11-pole base.
Use RS-11 socket or equivalent.
SPECIFICATIONS
Current Trip
Point Module
•
•
•
•
•
Self-contained current sensing amplifier
Works with intrinsically safe barrier to provide power to
Banner SMI Series intrinsically safe DC sensor(s); converts
input signal from the sensor to a contact closure
Powers a single sensor or both the emitter and receiver of an
opposed mode pair
Powered by 105-130 or 210-250V ac (50/60Hz)
Two output devices: SPDT 5 amp electromechanical relay
and opto-isolated transistor for logic level dc switching
DIMENSION DRAWING
FUNCTIONAL SCHEMATIC
Printed in USA
P/N 36611
The Banner MAXI-AMP model CI3RC2 (p/n 36606) is a self-
contained module which converts the current output signal of an
SMI Series intrinsically safe sensor to a trip point switch.
Banner SMI Series intrinsically safe sensors carry Factory Mutual
Research's rating for use in hazardous areas. Sensors are wired to
model CI3RC2 using the two-wire hookup through an intrinsi-
cally safe barrier. Refer to the hookups, page 2. The SMI Series
sensor sinks
≤
10 milliamps in the "OFF" state and
≥
20 milliamps
in the "ON" state. The CI3RC2 module senses this current change
and switches internal relays that may be easily wired to most loads
and/or additional control circuitry.
Model CI3RC2 is powered by either 105-130 or 210-250V ac. It
supplies dc power to operate a single sensor or both the emitter
and receiver of one SMI Series opposed mode sensor pair. The
sensor's input to the CI3RC2 is protected against short circuits.
MAXI-AMP
™
CI3RC2
for SMI Series intrinsically safe sensors
Built-in circuit diagnostics indicate an input overload by flashing
an LED status light.
The MAXI-AMP CI3RC2 module has two isolated output
switches. There is a 5-amp rated SPDT electromechanical relay,
and a solid-state transistor switch which may be used for logic-
level interfaces.
Banner also offers the CI3RC2 Current Trip Point Module as part
of a kit. See page 2 for further information. The CI3RC2 may be
used with the following Banner Intrinsically Safe sensors: SMI30
Series, SMI912 Series.
CI3RC2 module (left) shown with RS-11 socket and DIN
rail; also SMI30 Series emitter/receiver pair and intrinsic
safety barrier.