Product Information; Introduction - Emerson Affinity User Manual

Safety Product Mechanical
Information Information Installation
2

Product information

2.1

Introduction

The Affinity is a high performance open loop AC drive specifically designed for use in building automation HVAC/R applications. Figure 2-1 below
indicates the key product features including built in connectivity to building automation systems. Each drive is equipped with two identical option slots
for I/O and communications expansion
Figure 2-1 Features
Standard Fieldbus
Modbus
Standard Fieldbus
(Selectable between)
BACnet
Modbus RTU
Metasys N2
The Affinity drive can be used as a standalone motor controller or integrated into a building automation system using analog and digital I/O or serial
communications. The base drive incorporates a RS-485 serial communications port that is selectable between BACnet, Metasys N2 or Modbus RTU.
LonWorks, Ethernet, Profibus and Devicenet connectivity is achieved with the addition of plug-in Solutions Modules.
Key features:
Fire Mode
Fire Mode is a configurable override function that is used to alter the operation of the drive based upon external inputs, typically a discrete digital
input from a Building Management Fire Protection system (refer to section 11.21.3 Fire mode on page 216).
Fire Mode - Important Warning
When Fire Mode is active the motor overload and thermal protection are disabled, as well as a number of drive protection functions. Fire
Mode is provided for use only in emergency situations where the safety risk from disabling protection is less than the risk from the drive
tripping - typically in smoke extraction operation to permit evacuation of a building. The use of Fire Mode itself causes a risk of fire from
WARNING
overloading of the motor or drive, so it must only be used after careful consideration of the balance of risks.
Care must be taken to prevent inadvertent activation or de-activation of Fire Mode. Fire Mode is indicated by a flashing display text
warning "Fire mode active".
Care must be taken to ensure that parameters Pr 1.53 or Pr 1.54 are not inadvertently re-allocated to different inputs or variables. It should
be noted that, by default, Pr 1.54 is controlled from digital input 4 and changing Pr 6.04 or Pr 8.24 can re-allocate this digital input to another
parameter. These parameters are at access level 2 in order to minimize the risk of inadvertent or unauthorized changes. It is recommended
that User Security be applied to further reduce the risk (see section 5.10 Parameter access level and security on page 97). These
parameters may also be changed via serial communications so adequate precautions should be taken if this functionality is utilized.
Real time Clock
An internal real time clock is available which is used for the timer functions and trip log
Timer functions
Two timers are available to switch an output on a routine basis
Sleep/Wake Mode
Sleep/wake mode stops and starts the motor during periods of low demand to improve system efficiency
Advanced Process PID
Two PIDs are available which can operate independently or combine to provide more complex functionality
Affinity User Guide
Issue Number: 5
Electrical Getting Basic Running
Installation Started parameters the motor
Building Automation System
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SMARTCARD
Optimization PC tools
operation
Fieldbus options
SM-LON
SM-Ethernet
SM-DeviceNet
SM-PROFIBUS-DP-V1
SM-EtherCAT
SM-LON
SM-INTERBUS
SM-CAN
SM-CANopen
Advanced Technical
Diagnostics
parameters Data
I/O Expansion
SM-I/O Plus
SM-I/O Lite
SM-I/O 120V
SM-I/O 24V Protected
SM-I/O PELV
SM-I/O 32
UL Listing
Information
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