SymCom CIO-777-PR Programming Manual

BE SURE POWER IS DISCONNECTED PRIOR TO INSTALLATION!

FOLLOW NATIONAL, STATE AND LOCAL CODES.

READ THESE INSTRUCTIONS ENTIRELY BEFORE INSTALLATION.

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.
The design of the CIO-777-PR provides the following benefits in both new and existing installations:

 reduced field wiring
 greater operator efficiency
 ease in system startup and commissioning

The CIO-777-PR Profibus module can be DIN rail mounted, or mounted directly to a back panel. The
CIO-777-PR’s compact size, ease of wiring and Profibus communications capability makes the use
of traditional discrete devices on Profibus cost-effective and simple.
The CIO-777-PR Module is compatible with SymCom’s Model 777-P Series overload relays. It simply
connects to the side of the 777-P Series and permits remote monitoring and control of the 777-P
Series unit over a Profibus network.

CONNECTIONS

1. Mount the CIO-777-PR in a convenient location in a properly rated enclosure. The CIO-777-PR
can be mounted to a back panel using screws or can be snapped onto DIN rail.

2. Connect the five Profibus wires to the 5-pin connector on the front of the CIO-777-PR Module.
24VDC should be connected to V+ and V-. Connect the other three wires to A, B and Shield.

3. The PBus LED indicates that communication is established between the CIO-777-PR and the
Profibus master, and OLC LED indicates communication is established with the 777-P Series
overload.

4. Connect the Profibus SUB-D connector to the Profibus network.

FIGURE 1: Typical Wiring Diagram

MODEL CIO-777-PR

PROFIBUS COMMUNICATIONS MODULE

PROGRAMMING GUIDE

DEPLUGGABLE

TERMINAL BLOCK

PROFIBUS

SUB-D CONNECTOR

PROFIBUS
NETWORK

V­A

SHIELD

B

V+

IND. CONT. EQ.

LI STED

784X

¨

PROFIBUS NETWORK S TATUS

OVERLOAD COMM. S TATUS

PROFIBUS CommunicationCIO-E777-PR

SCREW TOR QUE RATING 0.5 Nm (5.0 in.-lbs.)

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DIAGNOSTIC INDICATOR LIGHTS

The unit is energized when power is applied between V+ and V- on the connector. The PBus and
OLC LEDs will flash until communication is established. The PBus communication status indicator
light will come on steady when a Profibus master is communicating with the unit. The OLC
communications status indicator light will come on steady when it is communicating to a 777-P
Series overload relay.

OPERATION

The CIO-777-PR Module is a DP-V0 device. Cyclical I/O is supported for the transfer of input and

output information.

PROFIBUS NETWORK CONFIGURATION

Cable Routing

Follow these general cable-routing guidelines:

Avoid areas of high temperature, moisture, vibration, or other mechanical stress.

Secure the cable where necessary to prevent damage.

Use cable ducts, raceways, or other structures to protect the cable.

Never route cables over, under or around sharp edges.

Avoid sources of electrical interference that can induce noise into the cable. Use the maximum
practical separation from such sources.

Maintain a minimum separation of 3.3 ft. (1m) from the following equipment:

o air conditioners and large blowers
o elevators and escalators
o radios and televisions
o intercom and security systems
o fluorescent, incandescent, and neon lighting fixtures

Maintain a minimum separation of 10 ft. (3m) from the following equipment:

o Line and motor power wiring
o Transformers
o Generators
o Alternators

Terminating Resistors

Profibus segments must be bus terminated as shown.

FIGURE 3: Bus Termination

390Ω

220Ω

390Ω

+5V

Li ne B

Li ne A

Data Ground

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Profibus Cable

The Profibus Cable must be connected as follows:

Pin

Signal

Description

1

–––

–––

2

–––

–––

3

RxD/TxD-P

Receive/Transmit data; line B (red)

4

CNTR-P

Control of repeater direction

5

DGND

Data ground (reference voltage to VP)

6

VP-

Power supply +5V (e.g. bus termination)

7

–––

–––

8

RxD/TxD-N

Receive/Transmit data; line A (green)

9

-----

------

CIO-777-PR SPECIFICATIONS

Power Requirements

Voltage

12–24VDC

Current

150mA (max.)

Power

3.6 Watts (max.)

Weight

3 oz.

Enclosure

Polycarbonate

Terminal (depluggable terminal block)

Torque

4.5 in.-lbs. (max.)

Wire AWG

12–20 AWG

Safety Marks

UL

UL508 (File #E68520)

CSA

C 22.2

Standards Passed

Electrostatic Discharge (ESD)

IEC 1000-4-2, Level 3, 6kV contact, 8kV air

Radio Frequency Immunity, Radiated

159 MHz, 10V/m

Fast Transient Burst

IEC 1000-4-4, Level 3, 4 kV input power

Hi-Potential Test

Meets UL508 (2 x rated V +1000V for 1 minute)

Environmental

Temperature Range

Ambient Operating: -20 to 70 C (-4 to 158 F)
Ambient Storage: -40° to 80°C (-40° to 176°F)

Class of Protection

IP20, NEMA 1 (Finger Safe)

Relative Humidity

10-95%, non-condensing per IEC 68-2-3

1 2 3 4 5

6 7 8 9

FIGURE 3: 9-Pin Sub-D
Connector Pin Assignment

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2.999

2.300

4.760

2.628

3.006

1.000

.535

3.500

.297

.420

3.750
.635.700

.350

DEPLUGGABLE

TERMINAL BLOCK

PROFIBUS

SUB-D CONNECTOR

IND. CONT. EQ.

LIS TED

784X

¨

PROFIBUS NETWORK S TATUS

OVERLOAD COMM. S TATUS

PROFIBUS CommunicationCIO-E777-PR

SCR EW T ORQUE R ATING 0.5 Nm (5.0 in-lbs. )

DIMENSIONS

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