Red Lion ICM4 User Manual

1

z ALLOWS COMMUNICATIONS BETWEEN RS232 CONTROL

EQUIPMENT AND PRODUCTS WITH RS485 SERIAL
COMMUNICATIONS

z WIDE DC INPUT POWER RANGE (+9 to 32 VDC)

z HALF DUPLEX (RS485) AND FULL DUPLEX (RS422)

z LED INDICATION FOR RXD, TXD, and POWER

z UNIVERSAL MOUNTING FOOT FOR DIN RAIL INSTALLATION

DESCRIPTION

The ICM4 Serial Converter Module provides the capability of interfacing
equipment with RS485 serial communications to equipment with RS232
communications. Data format of the RS232 and RS485 equipment must be
the same.

For full duplex (RS422), the DIP switch on the side of the module must be in
the RS422 position. For half duplex (RS485), the DIP switch must be in the
RS485 position. In half duplex mode, the RS485 driver is enabled using the
leading edge of the first character transmitted (RXD input). After the last
character transmits, the converter waits one character time (at 9600 baud) to
disable the RS485 driver.

There are 3 LED’s that can be viewed from the front of the converter module.
A green power LED indicates power is on, a red RS232 TXD LED flashes when
the module is transmitting, and a green RS232 RXD LED flashes when the
module is receiving.

An external DC power source (+9 to 32 VDC) is required to power the ICM4.
The external power source and serial communications connections are made via
a 12 position removable terminal block located on the front of the module.

The unit is equipped with a universal mounting foot for attachment to
standard DIN style mounting rails, including top hat profile rail according to
EN50022 - 35 x 7.5 and 35 x 15, and G profile rail according to EN50035 - G32.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

SPECIFICATIONS

1. POWER: +9 to 32 VDC @ 75 mA maximum. Above 26 VDC, derate max.
operating temperature to 40°C. Power supply must be Class 2 or SELV rated.

2. RS232 VOLTAGES:

Receive Data Pin: ± 30 VDC max.

Mark Condition: ≤ 0.8 VDC
Space Condition: ≥ 2.4 VDC

Transmit Data Pin:

Mark Condition: −8 VDC (typ.)
Space Condition: +8 VDC (typ.)

3. RS485 VOLTAGES:
Differential Output Voltage: ± 5 VDC max. under no load
Differential Input Voltage: ± 5 VDC max.

Mark Condition: ≤ −0.2 VDC
Space Condition: ≥ +0.2 VDC

RS485 Drive Capability: Up to 32 RS485 receivers connected in parallel.
RS485 Drive Disable Time: 4 msec. max.

4. MAXIMUM CABLE LENGTH:
RS232: 50 feet
RS485: 4000 feet

5. BAUD RATE: 9600 min., 19200 max.

6. CERTIFICATIONS AND COMPLIANCES:

SAFETY

UL Recognized Component, File #E179259, UL3101-1, CSA C22.2 No.

1010-1
Recognized to U.S. and Canadian requirements under the Component
Recognition Program of Underwriters Laboratories, Inc.

IECEE CB Scheme Test Certificate # US/5141B/UL,

CB Scheme Test Report # 01ME11540-0702001

Issued by Underwriters Laboratories, Inc.

IEC 61010-1, EN 61010-1: Safety requirements for electrical

equipment for measurement, control and laboratory use, Part 1.

ELECTROMAGNETIC COMPATIBILITY

Refer to EMC Installation Guidelines for additional information.

MODEL ICM4 - SERIAL CONVERTER MODULE (RS232C/RS485)

DIMENSIONS In inches (mm)

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

Bulletin No. ICM4-D

Drawing No. LP0416

Released 3/07

Tel [phone]

Fax [phone]

www.redlion.net

UL Recognized Component,
File # E179259

900 MHz ± 5 MHz

Immunity to EN 50082-2

200 Hz, 50% duty cycle

Electrostatic discharge EN 61000-4-2 Level 2; 4 Kv contact

Level 3; 8 Kv air

Electromagnetic RF fields EN 61000-4-3 Level 3; 10 V/m

80 MHz - 1 GHz

Fast transients (burst) EN 61000-4-4 Level 4; 2 Kv I/O

Level 3; 2 Kv power

RF conducted interference EN 61000-4-6 Level 3; 10 V/rms

150 KHz - 80 MHz

Simulation of cordless telephone ENV 50204 Level 3; 10 V/m

Emissions to EN 50081-1

RF interference EN 55022 Enclosure class B

2

SPECIFICATIONS (Cont’d)

7. ENVIRONMENTAL CONDITIONS:
Operating Temperature Range: 0 to 50°C. Derate max. operating

temperature to 40°C above 26 VDC.

Storage Temperature: -40 to + 75°C
Operating and Storage Humidity: 85% max.relative humidity

(non-condensing) from 0 to 50°C

Altitude: Up to 2000 meters

8. CONSTRUCTION: Case body is black, high impact plastic. Installation
Category I, Pollution Degree 2.

9. MOUNTING: Standard DIN rail top hat (T) profile rail according to
EN50022- 35 X 7.5 and 35 X 15

10. WEIGHT: 3.2 oz. (90.7 g)

EMC INSTALLATION GUIDELINES

Although this unit is designed with a high degree of immunity to

ElectroMagnetic Interference (EMI), proper installation and wiring methods
must be followed to ensure compatibility in each application. The type of
electrical noise, source or coupling method into the unit may be different for
various installations. In extremely high EMI environments, additional measures
may be needed. Cable length, routing and shield termination are very important
and can mean the difference between a successful or a troublesome installation.
Listed below are some EMC guidelines for successful installation in an
industrial environment.

1. DC power to the unit should be relatively clean and within the specified
limits. Connecting power to the unit from circuits that power inductive loads
that cycle on and off, such as contactors, relays, motors, etc., should be
avoided. This will reduce the chance of noise spikes entering the DC power
connection and affecting the unit.

2. The shield (screen) pigtail connection should be made as short as possible.
The connection point for the shield depends somewhat upon the application.
Listed below are the recommended methods of connecting the shield, in
order of their effectiveness.
a. Connect the shield only at the unit to earth ground (protective earth).
b. Connect the shield to earth ground at both ends of the cable, usually when

the noise source frequency is above 1 MHz.

c. Connect the shield to common of the unit and leave the other end of the

shield unconnected and insulated from earth ground.

3. Never run Signal cables in the same conduit or raceway with AC power lines,
conductors feeding motors, solenoids, SCR controls, and heaters, etc. The
cables should be run in metal conduit that is properly grounded. This is
especially useful in applications where cable runs are long and portable two­way radios are used in close proximity or if the installation is near a
commercial radio transmitter.

4. Signal cables within an enclosure should be routed as far away as possible
from contactors, control relays, transformers, and other noisy components.

5. In extremely high EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Signal
cables as close to the unit as possible. Loop the cable through the core several
times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line

interference. Install them near the power entry point of the enclosure. The
following EMI suppression devices (or equivalent) are recommended:

Ferrite Suppression Cores for signal cables:

Fair-Rite # 0443167251 (RLC #FCOR0000)
TDK # ZCAT3035-1330A
Steward #28B2029-0A0

Line Filters for input power cables:

Schaffner # FN610-1/07 (RLC #LFIL0000)
Schaffner # FN670-1.8/07
Corcom #1VR3

Note: Reference manufacturer’s instructions when installing a line filter.

6. Long cable runs are more susceptible to EMI pickup than short cable runs.
Therefore, keep cable runs as short as possible.

TYPICAL RS422 CONNECTIONS

Notes:

1. Connect shield drain wire to earth ground.

2. Place DIP switch on the side of the ICM4 in the 422 position.

3. RS422 polarity: Terminal “A” is negative with respect to Terminal “B” in
the mark (logic 1) condition.

SIDE VIEW OF ICM4