Specifications - Monico CDL Gateway Installation And Operation Manual

EMC INSTALLATION GUIDELINES
Although the CDL Gateway™ 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 a unit may be different for various installations.
Cable length, routing, and shield termination are very important and can mean the difference between a
successful or troublesome installation. Listed are some EMI guidelines for a successful installation in an
industrial environment.
1. To reduce the chance of noise spikes entering the unit via the power lines, connections should be made to a
clean source. Connecting to circuits that also power loads such as contactors, relays, motors, solenoids etc.
should be avoided.
2. The unit should be mounted in a metal enclosure, which is properly connected to protective earth.
3. Use shielded (screened) cables for all Signal and Control inputs. 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 to earth ground (protective earth) at one end where the unit is mounted.
b. Connect the shield to earth ground at both ends of the cable, usually when the noise source
frequency is over 1 MHz.
c. Connect the shield to common of the Data Station and leave the other end of the shield unconnected
and insulated from earth ground.
4. Never run Signal or Control 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 through metal conduit that is
properly grounded. This is especially useful in applications where cable runs are long and portable two-way
radios are used in close proximity or if the installation is near a commercial radio transmitter. Also, Signal or
Control cables within an enclosure should be routed as far away as possible from contactors, control relays,
transformers, and other noisy components.
5. Long cable runs are more susceptible to EMI pickup than short cable runs. Therefore, keep cable runs as
short as possible.
6. In extremely high EMI environments, the use of external EMI suppression devices is effective. The following
EMI suppression devices (or equivalent) are recommended:
Ferrite Suppression Cores for signal and control cables:
Fair-Rite part number 0443167251 (RLC part number FCOR0000)
TDK part number ZCAT3035-1330A
Steward part number 28B2029-0A0
Line Filters for input power cables:
Schaffner part number FN610-1/07 (RLC part number LFIL0000)
Schaffner part number FN670-1.8/07
Corcom part number 1 VR3

SPECIFICATIONS

1. POWER: 24 VDC ± 10%
200 mA min., without expansion card
1 Amp maximum with expansion card fitted
Must use Class 2 or SELV rated power supply.
2. COMMUNICATIONS:
USB/PG Port: Adheres to USB specification 1.1. Device only using Type B
connection.
Serial Ports: Format and Baud Rates for each port are individually software
programmable up to 115,200 baud.
RS232/PG Port: RS232 port via RJ12
COMMS Ports: RS422/485 port via RJ45, and RS232 port via RJ12
DH485 TXEN: Transmit enable; open collector, V
V = 0.5 V @ 25 mA max.
OL
Ethernet Port: 10 BASE-T / 100 BASE-TX
RJ45 jack is wired as a NIC (Network Interface Card).
3. LEDs:
STS – Status LED indicates condition of Data Station.
TX/RX – Transmit/Receive LEDs show serial activity.
Ethernet – Link and activity LEDs.
= 15 VDC,
OH
v1.05
6.26.09
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