YSI 6500 Environmental Process Monitor - Manual (Page 86)

Accessories Appendix D
WIRING INSTRUCTIONS
WARNING!
Wiring should be performed by a qualified electrician.
Do not make connections while power is applied.
Disconnect power before proceeding.
IMPORTANT! It is essential that all sensor wiring be run in a separate conduit from power
wiring.
The simplest configuration is where the sondes are within 250-feet (75 m) of the 6500 Monitor,
the Breakout Box is within 6-ft (1.8 m) of the 6500, neither the relay outputs nor the 4-20 mA
current loop outputs are used, and only AC power wiring is required. The sondes are connected
to the Breakout Box by the MS-8 connectors, which are pre-wired. The Breakout Box is
connected to the 6500 with the optional 6-foot (1.8 m) Patch Cable (YSI #6507). If, however, the
6500 Environmental Process Monitor is more than 6-ft (1.8 m) from the Breakout Box and any of
the outputs are wired to alarms or a SCADA system, additional wiring and the 6508 Junction Box
may be required. Below are wiring instructions for connection of the 6504 Breakout Box, and
sondes to the 6500 Environmental Process Monitor.
IMPORTANT!
Following the installation and wiring of the YSI #6504 Breakout Box, the conduit
fitting if used, must be sealed using the Industrial Encapsulant and instructions
supplied with the 6500 Environmental Monitoring System.
SONDE CABLE CONNECTIONS (SDI-12 COMMUNICATIONS LINK)
The Sonde can be equipped with a detachable or non-detachable cable or a bulkhead connector
that allows the use of various YSI field cables. The end connection of the cable is a military-style
8-pin connector (MS-8) that plugs directly into the 6504 Breakout Box.
In close range Breakout Box installations, Figure 10, the 6500 Monitor uses a standard MS-8
connection to interface with the 6 foot (1.8 m) 6507 Patch Cable, through a Gland Fitting (YSI
064007), to the 6504 Breakout Box. This configuration allows a maximum cable length of 250’
between the 6500 Monitor and the Sonde(s). The Patch Cable should be landed to TB-1 in the
breakout box. The MS-8 connectors for Sonde hookups are pre-wired to TB-2 and TB-3. See
Figure 12 for further information.
YSI Incorporated 6500 Environmental Process Monitor 83