© 2016 Littelfuse Protection Relays & Controls
Protection Relays
Communication Modules
www.littelfuse.com/cio777pr
Rev: 1-A-062716
CIO-777-PR
Description
The CIO-777-PR Module is a convenient and cost-effective
Profibus interface capable of providing discrete control and
monitoring of motor starters, drives and other devices over a
Profibus network.
Features & Benefits
FEATURES BENEFITS
Compact size
3.4” H x 1.0” W x 5.46” D
Easily adapts to existing as well as
new applications
Flexible addressing
standard allows function
as stand-alone interface
or in conjunction with
777 series overload relay
Provides flexibility for control and monitoring
Remote reset option
Additional remote reset input allows user to reset
777 series relays without opening the panel
DIN rail or surface
mountable
Allows installation flexibility
Built in sub-D connector
Provides a quick and easy connection to a network
and reduces field wiring
Communication link to PLC/SCADA/
monitoring systems
FIGURE 1: Typical Wiring Diagram
DEPLUGGABLE
TERMINAL BLOCK
SUB-D CONNECTOR
ROFIBUS
ETWORK
V-
A
SHIELD
B
V+
IN D. C ONT. E Q.
LI ST E D
784X
¨
PROF IBUS NETWORK S TATUS
OVERLOAD COMM. S TATUS
PROF IBUS Communication
CIO-E777-PR
SCREW TO RQUE RATING 0.5 Nm ( 5.0 in.-lbs.)
Wiring Diagram
Specifications
Input Characteristics
Power Requirements
Voltage (nominal) 12-24VDC
Current 150mA (max.)
Power 3.6 W (max.)
Digital Inputs
Voltage Range 12-24VAC
Maximum Current 2mA (typical)
Remote Reset 24VDC, 10mA, (min.), NO pushbutton
Output Characteristics
Form A & Form C Contactors
Pilot Duty 480VA @ 240VAC, B300
General Purpose 5A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Wire Gauge Solid or stranded, 12-20 AWG
Terminal Torque 3 in.-lbs.
Hi-Potential Test
(relays to other circuits) Meets UL508 (2 x rated V + 1000V for 1 min.)
EMC Standards
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Safety Marks
UL, ULC Listed UL508 (File #E68520)
CSA C22.2 (File #46510)
Enclosure Polycarbonate
Dimensions H 86.36 mm (3.4”); W 25.4 mm (1.0”);
D 138.68 mm (5.46”)
(w/depluggable connectors)
Weight 0.25 lb. (4 oz., 113.4 g)
(w/depluggable connectors)
Mounting Methods DIN Rail or surface mount (w/ two #8 screws)
