EplusE EE650 Air Velocity Sensor with RS485 Interface User Guide
- July 31, 2024
- EplusE
Table of Contents
EplusE EE650 Air Velocity Sensor with RS485 Interface
Specifications
- Product: EE650 – Air Velocity Sensor with RS485 Interface
- Interface : RS485
- Power Supply : Peak current of 150 mA
- Address Setting : Modbus (slave device) – factory setting 65 (permitted values: 1…247); BACnet (master device) – factory setting 65 (permitted values: 0…127)
- Measurement Units : Must be chosen according to the ordering guide in the datasheet
Product Usage Instructions
-
Electrical Connection
Ensure correct cabling by following the wiring diagram for the specific product version used. Use a power supply that can maintain the supply voltage within the specified range. -
Hardware
Implement bus termination with a 120Ω resistor switch on the electronics board to prevent damage from improper handling. -
Wiring
Connect the digital interface and power supply as per the provided wiring diagram. Ensure proper connection of V+, GND, A (=D+), B (=D-), and termination resistor S1 S2 ON. -
Address Setting
Set the address using either PCS10 Product Configuration Software or DIP switches based on the protocol being used (Modbus or BACnet). Refer to the manual for specific address settings. -
Modbus Setup
For reading temperature and air velocity parameters, use the specified function codes and register numbers as per the provided table. Make sure to choose the correct scale based on the measurement units. -
BACnet Setup
Set up the BACnet address as per the guidelines provided in the manual. Ensure proper configuration for communication within the network.
PLEASE NOTE
Find this document and further product information on our website at
www.epluse.com/ee650.
Electrical Connection
WARNING
Incorrect installation, wiring or power supply may cause overheating and can
therefore lead to personal injuries or damage to property. For correct cabling
of the device, always observe the presented wiring diagram for the product
version used. The manufacturer cannot be held responsible for personal
injuries or damage to property as a result of incorrect handling,
installation, wiring, power supply or maintenance of the device.
Hardware
The bus termination shall be implemented with a 120 Ω resistor, switch on the electronics board.
NOTICE
Improper handling of the device may result in its damage. The power supply
must be strong enough to ensure supply voltage within the specified range (see
technical data) at any time and at all devices in the bus. This is
particularly relevant when using long and thin cables which can cause high
voltage drop. Please note that a single EE650 requires peak current of 150 mA.
Wiring
Address Setting
- Address setting via PCS10 Product Configuration Software
- All DIP switches at position 0 → address has to be set via PCS10.
- Modbus (slave device): factory setting 65 (permitted values: 1…247).
- BACnet (master device) : factory setting 65 (permitted values: 0…127).
- Example : Address is set via configuration software = factory setting.
- Address setting via DIP switch
- Modbus (slave device): Setting the DIP switches to any other address than 0, overrules the Modbus address set via PCS10 (permitted values: 1…247).
- BACnet (master device): Setting the DIP switches to any other address than 0, overrules the BACnet address set via the configuration software.
- BACnet Note: permitted values are 0…127. The 8th bit of the DIP switches is ignored
- (ID 127 = 0111 111). To set address 0 via DIP switches, the 8th bit shall be set to 1
- (ID 0 = 1000 0000). Example: Address set to 11 (= 0000 1011 binary).
BACnet Setup
Please refer to PICS (Product Implementation Conformance Statement), available
on www.epluse.com/ee650.
Modbus Setup
- The choice of measurement units (metric or non-metric) must be done according to the ordering guide, refer to EE650 datasheet.
- Switching from metric to non-metric or vice versa by using the PCS10 is not possible. The register number (decimal) starts from 1.
- Register address (hexadecimal) starts from 0.
- Examples : For scale 100, the reading of 2550 means a value of 25.5. For scale 50, a reading of 2550 means a value of 51.
Communication settings (INT16)
- The register number starts from 1.
- The protocol address starts from 0.
- Number of registers.
- For Modbus address and protocol settings refer to Application Note Modbus AN0103 (available at www.epluse.com/ee650).
- If the ID is set via DIP-Switch the response will be NAK.
EE650 – Air Velocity Sensor with Analogue Output
Wiring
Jumper
For performing the EE650 settings via the PCS10 Product Configuration Software
(free download from www.epluse.com/pcs10) the
jumper for the measuring range must be set to HI.
E+E Elektronik Ges.m.b.H.
- Langwiesen 7 4209 Engerwitzdorf Austria
- T +43 7235 605-0
- F +43 7235 605-8
- info@epluse.com
- www.epluse.com
FAQ
How do I choose the measurement units?
The choice of measurement units must be done according to the ordering guide
in the datasheet. Switching between metric and non-metric units using PCS10 is
not possible.
What should I do if I encounter overheating issues?
If you experience overheating, immediately disconnect the power supply and
check the wiring connections. Ensure that the power supply is adequate and
within the specified range to prevent overheating.