Hardware and Connectivity 33
Power Supply Specifications

Available Accessories

The following accessories are available for purchase for the various IOLAN models (except medical
unit models):
zDIN Rail Mounting Kit (35mm) for the desktop models and Electric Utility models.
zIOLAN modem card for SCS rack mount models
zPCI adapter card for SCS rack mount models (for wireless WAN cards, modem cards and fiber
LAN cards)
z3 meter RJ45M-RJ45M 8-wire Sun/Cisco modular cable
zRJ45 to DB25 DTE Male adapter
zRJ45 to DB25 DCE Male adapter
zRJ45 to DB25 DTE Female adapter
zRJ45 to DB9 Male DTE adapter
zRJ45 to DB9 Female DTE adapter
Contact your distributor for details.
Power Supply Specifications

Desktop Models

If you are providing a power supply for a desktop IOLAN model, your power supply must meet the
following requirements:
zDC barrel connector: The cable attached to the power supply should be about 20AWG. The
barrel dimensions of the cable-plug are OD=5.5, ID=2.1, and length= 9.5mm, with a straight
barrel, and positive polarity on the inside and negative polarity on the outside. The voltage
output should be between 9-30V DC and a minimum of 600 mA.
zTerminal Block connector: The cable attached to the power supply should be about 20AWG.
See the Quick Start Guide for your model to determine the power requirements
zPower can also be provided by:
zSerial Port 1, pin 1 on the DS/SDS1 models
zSerial Port 2, pin 1 on the SDS2 model
zSerial Port 4, pin 1 on the SDS4/SCS4 /SCS4 HL models
zEthernet on the P series models (Power over Ethernet)

Power Over Ethernet (PoE) Models

The 1-port/4-port SDS P models can be powered by either the external DC power supply (not
included) or PoE or both. The 2-port SDS P does not accommodate an external power supply and can
be powered only through PoE.
The IOLAN SDS P model is considered a Powered Device (PD) and can only accept power from an
IEEE 802.3AF compliant Power Source Equipment (PSE) device. The IOLAN PoE can receive up to
13W of power using one of the following methods to connect to a PSE:
zUsing the two unused twisted pair wires (10/100Mb only).
zUsing the two data pairs or “phantom power” method (100Mb).
Note: Explosion WARNING
SDS4 HL model ONLY.
Do not disconnect while circuit is live unless area is known to be non-hazardous.