Emerson Tescom ER5000 Series, User Manual, Page: 94 / 248

ER5000 —
94
Installation Variations
Digital Setpoint Source — RS485 Network,
USB to RS485 Converter
(TESCOM™ Model #82948)
(cont.)
Each ER5000 in the network must be assigned a unique Node
Address. All ER5000s are assigned a default Node Address of 250;
therefore, the addresses must be changed to allow them to all
communicate on the network.
The Node Address can be changed as part of the setup procedure
or at any time afterwards using
The Configure Tab .
Refer to To set up the ERTune™ program to work with the ER5000
and The Configure Tab for more information on how to modify the
Node Address of the ER5000 using the ERTune™ program.
Repeat this process for each ER5000 in the network. Be sure to
give each controller a unique Node Address within the network.
You may leave one ER5000 at the default value.
NOTE NOTE
CAUTION CAUTION
WARNING WARNING
The number you assign should be lower than 250. Numbers
higher than 250 will be truncated to the first two digits.
NOTE NOTE
CAUTION CAUTION
WARNING WARNING
The power supply for your network must be able to provide
300 mA to each ER5000 in the daisychain.
Refer to Table 13 to verify correct wiring.
Table 13: Wiring for Networked Connection (USB to RS485 Converter)
J3 Pins Wire Color Function
1 brown +setpoint input
2 red -setpoint input
3 orange +feedback input
4 yellow -feedback input
5 green -RS485 network connection
6 blue +RS485 network connection
7 violet +24V DC power
8 gray 24V return (power ground)
9 white +5V output (5 mA max.)
10 black analog signal/board ground
*
11
*
pink analog signal output
(active in Enhanced “F” models ONLY)
12 tan analog signal/board ground
The USB to RS485 converter is powered through its USB
connection, so it does not require direct wiring to a power supply.