Nortec NHSC Nortec OnLine - Manual (Page 4)

WIRING
Ethernet Connections
The necessary internal wiring for the Nortec
OnLine Module is already present except for the
Network connection that can be made internally to the
unit. To network multiple humidifiers, configured for
Nortec OnLine, simply ‘daisy-chain’ them to each other
at the network terminal strip, provided with the
humidifier (Figure #2).
Table #1 refers to the recommended wire types
and maximum recommended lengths from the Nortec
OnLine Module. Since communication between the
humidifiers and Nortec OnLine will always occur via a
EIA-485 signal type, Nortec recommends using 18-24
AWG shielded, twisted pair wire between the lead
humidifier and each of the secondary humidifiers.
Cable runs between the Nortec OnLine Module and
the furthest slave humidifier should not exceed 2,600
feet. Signal boosters or repeaters may be necessary
for longer wire runs.
The Nortec OnLine Module has been designed
and tested to operate with a variety of third-party
manufacturers equipment that promote wireless
connectivity. Should a user desire to connect the
OnLine Module to the internet via a wireless
connection such as 802.11b or g class network, Nortec
can provide recommendations on which equipment to
use.
GPRS or Dial-up Connections
The Nortec OnLine Module is also able to connect
with the Nortec Server via a dial-up connection to a
local Internet Service Provider or even through a
GPRS connection. Should such a connection be
desirable Nortec can recommend a variety of third
party manufacturers equipment that the Nortec OnLine
Module has been proven to work well with.
If a dial-up or GPRS connection is desired it will be
necessary to contact Nortec at the time of order to
provide information on the required settings.
VARIABLE DEFINITION
Nortec OnLine is capable of monitoring dozens of
control variables present in a Nortec humidifier. By
providing the data values to these variables on a
remote platform, Nortec OnLine simplifies the
troubleshooting.
- 2 -
Signal Type
Polarity
Recommended Cable
Maximum Recommended
Distance from
Nortec Module
A B
EIA-485, 2-wire Net + Net - 18-24 AWG Shielded,
Twisted Pair
2,600 ft.
Table #1
Recommended Wire Types and Lengths
Figure #2
Connecting Multiple Humidifiers to a Lead
Humidifier