Hardware and Connectivity 29
Power Supply Specifications
Note:
Power over serial is not a feature on the SDS W and SDS L models.
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:
z
Using the two unused twisted pair wires (10/100Mb only).
z
Using the two data pairs or “phantom power” method (100Mb).
I/O Models
The power supply for a desktop IOLAN I/O model must meet the following requirement:
z
Output between 9-30VDC and a minimum of 600mA current.
z
20 AWG wire.
Rack Mount Models (except Electric Utility models)
DC Power Requirements
The IOLAN DC is supplied with an integral Terminal Connections block to facilitate connection to a
DC source(s). The DC supply(s) should have adequate over-current protection within the closed rack
system and comply with local or national standards applicable to the installation territory. You need
wire gauge 20 to 22 AWG to connect the IOLAN rack mount unit to the power source.
AC Power Requirements
AC power rack mount units come with standard power cords, specific to your country, that should be
used to power the IOLAN unit.
Note:
Explosion WARNING
SDS4 HL model ONLY.
Do not disconnect while circuit is live unless area is known to be non-hazardous.
Note:
The maximum load for the Relay channel is 1A @ 30VDC or 0.5A @ 120 VAC.
Note:
The equipment must be grounded for safety and to ensure ESD protection for correct
operation and protection of the internal circuitry.
Note:
WARNING
Before servicing this product ensure the power source has been disconnected. For dual input
or dual power supply models, ensure both sources have been disconnected.
Note:
WARNING
Before servicing this product ensure the power source has been disconnected. For dual input
or dual power supply models, ensure both sources have been disconnected.
