Electrical Connections
Hardware Installation
Step 1
- Unpack materials: Remove all materials from shipping box and verify all required components are available
Step 2
- Mount the AcquiSuite on the wall, panel or other appropriate location.
Step 3
(optional) - Connect the Modbus network loop as shown in the wiring diagram. Follow the manufacturer’s
instructions for installing and powering the Modbus devices. Verify that the Modbus address settings are unique for each
device (i.e., no two devices with the same address) and power up the device. Connect each device in the chain by “daisy-
chaining” the devices together . O and - polarity on the Modbus devices. For more information about Modbus loops,
please read our Modbus FAQ
.
Low Voltage analog, pulse, and RS485 wiring that enters electrical panels must have a minimum insulation rating that
exceeds the voltage inside the panel. In addition, other regulations may apply; consult the building codes in your area prior
to installation.
The RS485 port on the A8810 does not have a built in terminator. A 150 ohm termination resistor should be placed at the
ends of the RS485 loop, between the + and – wires. For more information about RS485 termination, read the Modbus FAQ
.
Some Modbus devices do not use the same label notation as the AcquiSuite. Rather than +,-,S, Emon uses Low, High, and
Gnd. To attach an Emon meter, use + to high, - to low, and shield to gnd.
WARNING: After wiring the A8810, remove all scraps of wire or foil shield from the electrical panel. This
could be dangerous if wire scraps come into contact with high voltage wires.
Step 4
- Power-up and diagnostics: A power supply is not provided with the AcquiSuite EMB, therefore it is up to the
Page 6
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