Veris Industries E8950 Install - Manual (Page 3)

TM
E8950 INSTALLATION GUIDE
ZL0105-0B PAGE 3 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 02131
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2. Connect the Modbus outputs of the devices to the Modbus side of the E8950.
–
+
S
E8950 Meters
120 Ω resistor on the last device in the daisy chain.
• Wire the RS-485 bus as a daisy chain from device to device (up to 32
supported devices) without any stubs. Use a 120 Ω termination resistor
(not included) on the device farthest from the E8950. An additional 120 Ω
termination and Modbus line polarization are provided internal to the
E8950.
• Connect shield to earth ground somewhere on the RS-485 bus. The shield
is not internally connected to earth ground.
• Use wire with an insulation rating sufficient for the location where the
meter is installed (e.g. Belden 1120A for installation in panels with up to
600 VAC).
3. Connect 9-30 VDC or 12-24 VAC to the +PWR/-PWR terminals of the 6-pin
connector.
Modbus Setup
Use DIP switches S0 to S2 to set the Modbus baud rate to 9600, 19200, or 38400. The
default baud rate is 9600, because this rate is available on all the devices supported
by the E8950. If all connected devices support a faster rate, use the highest rate in
common to improve performance. Set the E8950 and all Modbus
devices in the series to the same rate. Set all devices to NO parity.
Baud Rate S0 – S2 DIP Switches
S0 S1 S2
9600 Baud   
19200 Baud   
38400 Baud   
BACnet Physical Layer Selection
Use DIP switch A7 to select the BACnet physical layer. See
Appendix 2: DIP Switch Addresses section at the back of this
document for physical layer switch settings.
Layer Switch Position
BACnet/IP 
BACnet MS/TP 
INSTALLATION
The E8950 can be DIN rail mounted, using the supplied DIN rail mounting clip, or
screw-mounted directly to a wall or other flat surface using the mounting holes on
either side of the housing.
6 Pin Connector
Pin # Pin Assignment
Pin 1 RS-485 + (Modbus)
Pin 2 RS-485 - (Modbus)
Pin 3 RS-485 GND
Pin 4 V +
Pin 5 V -
Pin 6 FRAME GND
1. Refer to the Installation Guides for the specific meter devices used to locate
instructions on connecting the meters and changing the configuration settings.
Modbus Power
PRODUCT DIAGRAM
BACnet MS/TP RS-485
DIP switches for setting MS/TP
MAC address, physical interface
type, MS/TP baud rate, Modbus
baud rate, and enabling auto-
discovery of meters
BACnet
IP/Ethernet
Port
Modbus RTU port RS-485 +, -, Shield Power 9-30 VDC, 12-24 VAC
LED BLINK CODES
LED Color Description
SPL Blue Reserved for future use. It may be on or off when the unit is on.
RUN Dark Green Slow blink (one second on, one second off) after the product
has initialized (approximately 40 seconds after the unit is
powered or reset). This indicates normal operation.
ERR Red • This illuminates blink briefly when the Run LED first comes on
(about 15 seconds after the unit is powered or reset).
• A steady red light indicates the unit needs attention.
RX Yellow Indicates the device is receiving data on the Modbus link.
TX Orange Indicates the device is transmitting data on the Modbus link.
PWR Light Green This is always on when the unit is powered.