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2008-02-15
Figure 3. NHDI LINKS 2 Slave Installation
(3) Installation of LINKS 2 Slave Option
(a) The LINKS 2 module is capable of supporting up to 8 humidifiers when each
unit is equipped with a TTL to RS-485 signal converter. The LINKS 2 slave
option consists of a small bracket with the signal converter mounted on one
side. In addition a terminal strip is provided to allow the humidifiers to be
wired back to the master module.
(b) Mount the LINKS slave option on any humidifier that will be connected to the
master module. The slave option mounts in the same location as the master
LINKS module. Use 2 #8-32 screws and 2 #8-32 nuts to secure the bracket to
the top of the humidifier cabinet.
(c) The provided 3-position terminal strip will be installed next to the standard
humidifier strip using 2 #6-32 screws. For units being retrofitted, the existing
terminal strip may have to be shifted to the right for the LINKS terminal strip
to fit.
(d) Connect the 4-pin modular plug into one of the 2 modular jacks on the TTL to
RS-485 signal converter.