Leviton A8812, Инструкция по установке и эксплуатации

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4 INSTALLATION
4.1 Hardware Installation
4.1.1
Unpack materials: Remove all materials from shipping box and verify all required components
are available.
4.1.2
Mount the DAS on the wall, panel or other appropriate location.
4.1.3
(optional) Connect any analog or pulse output sensors you may have. For Analog sensors,
0-10V or 4-20mA sensor types are allowed. The combined power consumption of all the
analog sensors attached to the Energy Monitoring Hub must not exceed 200mA. If more
current is required, use an external power supply as shown in the wiring diagram for each
input type later in this section.
4.2
(optional) - Connect the Modbus network loop as shown in the wiring diagram. Follow the
manufacturer’sinstructions 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 “daisychaining” the devices together. Observe
+ and - polarity on the Modbus devices. For more information about Modbus loops, please read our
Modbus FAQ available at www.leviton.com.
Low Voltage analog, pulse, and RS485 wiring that enter 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 A8812 has a built in terminator. A 120 ohm termination resistor should be
placed at the other end of the RS485 loop, between the + and – wires. For more information about
RS485 termination, read the Modbus FAQ at www.leviton.com
Note: Some Modbus devices do not use the same label notation as the Energy Monitoring Hub.
The Energy Monitoring Hub A8812 internal IO module (Analog and pulse inputs) uses Modbus
address 250, and will show up in the Modbus device count as a single Modbus device. Additional
analog or pulse input IO modules may be added to the Modbus loop as needed.
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Energy Monitoring Hub A8812
WEB
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