Fuji Electric frenic-hvac User manual

24A7-E-0069d

User's Manual

Copyright © 2012-2016 Fuji Electric Corp. of America
All rights reserved.
No part of this publication may be reproduced or copied without prior written permission from Fuji Electric
Corp. of America.
All products and company names mentioned in this manual are trademarks or registered trademarks of their
respective holders.
The information contained herein is subject to change without prior notice for improvement.

i
Preface
This manual provides all the information on the FRENIC-HVAC series of inverters including its operating
procedure, operation modes, and selection of peripheral equipment. Carefully read this manual for proper
use. Incorrect handling of the inverter may prevent the inverter and/or related equipment from operating
correctly, shorten their lives, or cause problems.
The table below lists the other materials related to the use of the FRENIC-HVAC. Read them in conjunction
with this manual as necessary.
Name Material No. Description
Catalog
24A1-E-0068 Product scope, features, specifications, external
drawings, and options of the product
Instruction Manual
INR-SI47-1707-JE
Acceptance inspection, mounting & wiring of the
inverter, operation using the keypad, running the motor
for a test, troubleshooting, and maintenance and
inspection
RS
-485
Communication
User's Manual
24A7-E-0021
Overview of functions implemented by using
FRENIC-HVAC RS-485 communications facility, its
communications specifications, Modbus RTU/Fuji
general-purpose inverter protocol and functions, and
related data formats
The materials are subject to change without notice. Be sure to obtain the latest editions for use.
The latest editions can be downloaded from our Web side at:
http://www.americas.fujielectric.com/components/drives-inverters

ii
Safety precautions
Read this manual and the FRENIC-HVAC Instruction Manual (that comes with the product) thoroughly
before proceeding with installation, connections (wiring), operation, or maintenance and inspection. Ensure
you have sound knowledge of the product and familiarize yourself with all safety information and
precautions before proceeding to operate the inverter.
Safety precautions are classified into the following two categories in this manual.
Failure to heed the information indicated by this symbol may lead to
dangerous conditions, possibly resulting in death or serious bodily injuries.
Failure to heed the information indicated by this symbol may lead to
dangerous conditions, possibly resulting in minor or light bodily injuries
and/or substantial property damage.
Failure to heed the information contained under the CAUTION title can also result in serious consequences.
These safety precautions are of utmost importance and must be observed at all times.
This product is not designed for use in appliances and machinery on which lives depend. Consult your Fuji
Electric representative before considering the FRENIC-HVAC series of inverters for equipment and
machinery related to nuclear power control, aerospace uses, medical uses or transportation. When the
product is to be used with any machinery or equipment on which lives depend or with machinery or
equipment which could cause serious loss or damage should this product malfunction or fail, ensure that
appropriate safety devices and/or equipment are installed.

iii
How this manual is organized
This manual contains Chapters 1 through 11 and Appendices.
Chapter 1 ABOUT FRENIC-HVAC
This chapter describes the features and control system of the FRENIC-HVAC series and the recommended
configuration for the inverter and peripheral equipment.
Chapter 2 SPECIFICATIONS
This chapter describes specifications of the output ratings, control system, and terminal functions for the
FRENIC-HVAC series of inverters. It also provides descriptions of the operating and storage environment,
product warranty, precautions for use, external dimensions, examples of basic connection diagrams, and
details of the protective functions.
Chapter 3 SELECTING OPTIMAL MOTOR AND INVERTER CAPACITIES
This chapter provides you with information about the inverter output torque characteristics, selection
procedure, and equations for calculating capacities to help you select optimal motor and inverter models.
Chapter 4 SELECTING PERIPHERAL EQUIPMENT
This chapter describes how to use a range of peripheral equipment and options, FRENIC-HVAC's
configuration with them, and requirements and precautions for selecting wires and crimp terminals.
Chapter 5 PREPARATION AND TEST RUN
This chapter details the operating environment, storage environment, installation, wiring, basic connection
examples, names and functions of the keypad components, operation using the keypad, and test run
procedure.
Chapter 6FUNCTION CODES
This chapter contains overview tables of 12 groups of function codes available for the FRENIC-HVAC series
of inverters, function code index by purpose, and details of function codes.
Chapter 7BLOCK DIAGRAMS FOR CONTROL LOGIC
This chapter provides the main block diagrams for the control logic of the FRENIC-H VA C series of
inverters.
Chapter 8 RUNNING THROUGH RS-485 COMMUNICATION
This chapter describes an overview of inverter operation through the RS-485 communications facility. Refer
to the RS-485 Communication User's Manual for details.
Chapter 9 TROUBLESHOOTING
This chapter describes troubleshooting procedures to be followed when the inverter malfunctions or detects
an alarm or a light alarm condition. In this chapter, first check whether any alarm code or the "light alarm"
indication (L-AL) is displayed or not, and then proceed to the troubleshooting items.
Chapter 10 MAINTENANCE AND INSPECTION
This chapter provides the instructions on how to perform daily and periodic inspections in order to avoid
trouble and keep reliable operation of the inverter for a long time.

iv
Chapter 11 CONFORMITY WITH STANDARDS
This chapter sets forth the conformity with overseas standards.
Appendices
Icons
The following icons are used throughout this manual.
This icon indicates information which, if not heeded, can result in the inverter not operating to
full efficiency, as well as information concerning incorrect operations and settings which can
result in accidents.
This icon indicates information that can prove handy when performing certain settings or
operations.

This icon indicates a reference to more detailed information.

v
CONTENTS
Chapter 1 About FRENIC-HVAC
1.1 Features..................................................................................................................................................... 1-1
1.2 Inspection of goods and product appearance.................................................................................... 1-13
1.2.1 Inspection of goods ........................................................................................................................ 1-13
1.2.2 Product appearance....................................................................................................................... 1-15
Chapter 2 SPECIFICATIONS
2.1 Standard Model FRENIC-HVAC.............................................................................................................. 2-1
2.1.1 Three-phase 230 V class series (USA models).................................................................................... 2-1
2.1.2 Three-phase 460 V class series (USA models)................................................................................... 2-3
2.1.3 Three-phase 575 V class series (USA models)................................................................................... 2-6
2.2 Common Specifications .............................................................................................................................. 2-9
2.3 Terminal Specifications............................................................................................................................. 2-16
2.3.1 Terminal functions ............................................................................................................................ 2-16
2.3.2 Setting up the slide switches ............................................................................................................. 2-26
2.3.3 Screw specifications and recommended wire sizes........................................................................... 2-28
2.3.3.1 Main circuit terminals ............................................................................................................... 2-28
2.3.3.2 Control circuit terminals (Common to all inverter types) ......................................................... 2-35
2.4 Conduits .................................................................................................................................................... 2-36
2.4.1 Conduits ............................................................................................................................................ 2-36
2.5 Leakage Current of the EMC Filter........................................................................................................... 2-39
2.6 Derating of Rated Output Current............................................................................................................. 2-42
2.7 Operating Environment and Storage Environment ................................................................................... 2-44
2.7.1 Operating environment...................................................................................................................... 2-44
2.7.2 Storage environment ......................................................................................................................... 2-45
2.7.2.1 Temporary storage..................................................................................................................... 2-45
2.7.2.2 Long-term storage ..................................................................................................................... 2-45
2.8 Precautions for Using Inverters................................................................................................................. 2-46
2.8.1 Precautions in introducing inverters.................................................................................................. 2-46
2.8.2 Precautions in running inverters........................................................................................................ 2-50
2.8.3 Precautions in using special motors .................................................................................................. 2-50
2.9 External Dimensions ................................................................................................................................. 2-51
2.9.1 Standard models................................................................................................................................ 2-51
2.9.2 Keypad .............................................................................................................................................. 2-64
2.10 Connection Diagrams................................................................................................................................ 2-65
Chapter 3 SELECTING OPTIMAL MOTOR AND INVERTER CAPACITIES
3.1 Selecting Motors and Inverters ................................................................................................................... 3-1
3.1.1 Motor output torque characteristics..................................................................................................... 3-1
3.1.2 Selection procedure............................................................................................................................. 3-3
3.1.3 Equations for selections ...................................................................................................................... 3-6
3.1.3.1 Load torque during constant speed running ................................................................................ 3-6
3.1.3.2 Calculation of acceleration/deceleration time ............................................................................. 3-7
3.1.3.3 Heat energy calculation of braking resistor............................................................................... 3-10
Chapter 4 SELECTING Peripheral EQUIPMENT
4.1 Configuring the FRENIC-HVAC ................................................................................................................ 4-1
4.2 Currents flowing across the inverter terminals............................................................................................ 4-2
4.3 Peripheral Equipment.................................................................................................................................. 4-5

vi
4.3.1 Molded case circuit breaker (MCCB), residual-current-operated protective device (RCD)/
earth leakage circuit breaker (ELCB) and magnetic contactor (MC).................................................. 4-5
4.3.2 Surge killers for L-load ..................................................................................................................... 4-10
4.3.3 Arresters............................................................................................................................................ 4-11
4.3.4 Surge absorbers ................................................................................................................................. 4-12
4.4 Options...................................................................................................................................................... 4-13
4.4.1 Selecting peripheral equipment options ............................................................................................ 4-13
4.4.1.1 Power regenerative PWM converters, RHC series.................................................................... 4-13
4.4.1.2 AC reactors (ACRs) .................................................................................................................. 4-36
4.4.1.3 DC reactors (DCRs) (Built-in or bundled as standard) ............................................................. 4-41
4.4.1.4 Surge suppression unit (SSU).................................................................................................... 4-43
4.4.1.5 Output circuit filters (OFLs)...................................................................................................... 4-44
4.4.1.6 Zero-phase reactors for reducing radio noise (ACLs) ............................................................... 4-48
4.4.2 Selecting options for operation and communication ......................................................................... 4-49
4.4.2.1 External frequency command potentiometer............................................................................. 4-49
4.4.2.2 Extension cable for remote operation........................................................................................ 4-50
4.4.2.3 Frequency meters ...................................................................................................................... 4-50
4.4.2.4 Inverter support loader software................................................................................................ 4-51
4.4.3 Selecting Option Cards ..................................................................................................................... 4-52
4.4.3.1 List of option cards, connection ports, and applicable ROM versions ...................................... 4-52
4.4.3.2 Relay output interface card (OPC-RY)...................................................................................... 4-53
4.4.3.3 Relay output interface card (OPC-RY2).................................................................................... 4-55
4.4.3.4 Analog interface card (OPC-AIO)............................................................................................. 4-57
4.4.3.5 Analog current output (2 ch) interface card (OPC-AO) ............................................................ 4-61
4.4.3.6 Resistance temperature detector input card (OPC-PT).............................................................. 4-63
4.4.3.7 CC-Link communications card (OPC-CCL) ............................................................................. 4-66
4.4.3.8 PROFIBUS-DP communications card (OPC-PDP2) ................................................................ 4-68
4.4.3.9 DeviceNet communications card (OPC-DEV).......................................................................... 4-71
4.4.3.10 CANopen communications card (OPC-COP) ........................................................................... 4-74
4.4.3.11 LONWORKS communications card (OPC-LNW) ................................................................... 4-76
4.4.3.12Ethernet communications card (OPC-ETH).............................................................................. 4-77
4.5 Backup Battery.......................................................................................................................................... 4-79
4.5.1 Outline............................................................................................................................................... 4-79
4.5.2 Loading the battery ........................................................................................................................... 4-80
4.5.3 Battery replacement procedure.......................................................................................................... 4-82
4.5.4 About air transport of batteries.......................................................................................................... 4-82
Chapter 5 PREPARATION AND TEST RUN
5.1 Mounting and Wiring the Inverter............................................................................................................... 5-1
5.1.1 Installing the inverter .......................................................................................................................... 5-1
5.1.2 Wiring ................................................................................................................................................. 5-4
5.1.2.1 Removing and mounting the front cover and the wiring plate .................................................... 5-4
5.1.2.2 Input ferrite core diameter........................................................................................................... 5-7
5.1.3 Screw specifications and recommended wire sizes............................................................................. 5-7
5.1.3.1 Main circuit terminals ................................................................................................................. 5-7
5.1.3.2 Control circuit terminals (Common to all inverter types) ........................................................... 5-7
5.1.4 Conduits .............................................................................................................................................. 5-7
5.1.5 Wiring precautions .............................................................................................................................. 5-8
5.1.6 Wiring of main circuit terminals and grounding terminals.................................................................. 5-9
5.1.7 Wiring for control circuit terminals................................................................................................... 5-16
5.1.8 Setting up the slide switches ............................................................................................................. 5-19
5.1.9 USB port ........................................................................................................................................... 5-20

vii
5.2 Mounting and Connecting a Keypad......................................................................................................... 5-21
5.2.1 Parts required for connection ............................................................................................................ 5-21
5.2.2 Mounting procedure.......................................................................................................................... 5-21
5.3 Operation Using the Keypad..................................................................................................................... 5-24
5.3.1 LCD monitor, keys and LED indicators on the keypad..................................................................... 5-24
5.4 Overview of Operation Modes.................................................................................................................. 5-28
5.5 Running Mode .......................................................................................................................................... 5-29
5.5.1 Monitoring the running status ........................................................................................................... 5-29
5.5.2 Setting up frequency and PID commands ......................................................................................... 5-32
5.5.3 Running/stopping the motor.............................................................................................................. 5-36
5.5.4 Remote and local modes ................................................................................................................... 5-36
5.5.5 Changing from keypad operation to external signal (terminal block) operation............................... 5-37
5.5.6 Monitoring light alarms..................................................................................................................... 5-37
5.6 Programming Mode .................................................................................................................................. 5-38
5.6.1 Quick Setup....................................................................................................................................... 5-40
5.6.2 Start-up.............................................................................................................................................. 5-40
5.6.2.1 Set Display Language................................................................................................................ 5-41
5.6.2.2 Function-Specific Initialization ................................................................................................. 5-42
5.6.2.3 Date/Time Settings .................................................................................................................... 5-42
5.6.2.4 Set Display ................................................................................................................................ 5-45
5.6.3 Function Codes ................................................................................................................................. 5-46
5.6.3.1 Setting up function codes .......................................................................................................... 5-47
5.6.3.2 Confirm Data............................................................................................................................. 5-49
5.6.3.3 Confirm Changed Function Code.............................................................................................. 5-49
5.6.3.4 Copying data ............................................................................................................................. 5-49
5.6.3.5 Set Timer Operation .................................................................................................................. 5-61
5.6.3.6 Initialize Data ............................................................................................................................ 5-64
5.6.4 Inverter Information .......................................................................................................................... 5-65
5.6.4.1 Confirm Power Level ................................................................................................................ 5-65
5.6.4.2 Confirm Operational Status....................................................................................................... 5-66
5.6.4.3 Check Status of Input/Output Signal......................................................................................... 5-69
5.6.4.4 View Maintenance Information................................................................................................. 5-71
5.6.4.5 View Unit Information .............................................................................................................. 5-75
5.6.5 Alarm Information ............................................................................................................................ 5-76
5.6.5.1 Confirm Alarm History ............................................................................................................. 5-76
5.6.5.2 Confirm Light Alarm History.................................................................................................... 5-80
5.6.5.3 Retry History............................................................................................................................. 5-80
5.6.6 User Config ....................................................................................................................................... 5-81
5.6.6.1 Quick Setup............................................................................................................................... 5-81
5.6.6.2 Password ................................................................................................................................... 5-81
5.6.7 Tools.................................................................................................................................................. 5-85
5.6.7.1 Monitor PID Control Status ...................................................................................................... 5-85
5.6.7.2 Monitor Multiple Unit Controls ................................................................................................ 5-88
5.6.7.3 Monitor Customized Logic (CLogic)........................................................................................ 5-91
5.6.7.4 Resonance Avoidance................................................................................................................ 5-92
5.6.7.5 Load Factor Measurement......................................................................................................... 5-93
5.6.7.6 Communication Debug ............................................................................................................. 5-96
5.7 Alarm Mode.............................................................................................................................................. 5-97
5.7.1 Releasing the alarm and switching to Running mode ....................................................................... 5-97
5.7.2 Displaying the alarm history ............................................................................................................. 5-97
5.7.3 Displaying the status of inverter at the time of alarm ....................................................................... 5-97
5.7.4 Test run procedure............................................................................................................................. 5-98

viii
5.7.5 Checking prior to powering ON........................................................................................................ 5-99
5.7.6 Powering ON and checking............................................................................................................. 5-100
5.7.7 Selecting a desired motor drive control........................................................................................... 5-100
5.7.8 Function code basic settings < 1 > .................................................................................................. 5-101
5.7.9 Function code basic settings and tuning < 2 > ................................................................................ 5-103
5.7.10 Running the inverter for motor operation check ............................................................................. 5-106
5.7.11 Preparation for practical operation .................................................................................................. 5-107
Chapter 6 FUNCTION CODES
6.1 Overview of Function Codes ...................................................................................................................... 6-1
6.2 Function Code Tables.................................................................................................................................. 6-2
6.3 Details of Function Codes......................................................................................................................... 6-41
6.3.1 F codes (Fundamental functions) ...................................................................................................... 6-41
6.3.2 E codes (Extension terminal functions)............................................................................................. 6-84
6.3.3 C codes (Control functions) ............................................................................................................ 6-125
6.3.4 P codes (Motor 1 parameters) ......................................................................................................... 6-137
6.3.5 H codes (High performance functions) ........................................................................................... 6-141
6.3.6 H1 codes (High performance functions) ......................................................................................... 6-174
6.3.7 J codes (Application functions 1).................................................................................................... 6-181
6.3.8 J1 codes (PID control 1).................................................................................................................. 6-182
6.3.9 J2 codes (PID control 2).................................................................................................................. 6-215
6.3.10 J5 codes (External PID control 1) ................................................................................................... 6-217
6.3.11 J6 codes (External PID control 2, 3) ............................................................................................... 6-245
6.3.12 d codes (Application functions 2) ................................................................................................... 6-249
6.3.13 U codes (Customizable logic functions) ......................................................................................... 6-249
6.3.14 U1 codes (Customizable logic functions) ....................................................................................... 6-270
6.3.15 y codes (Link functions).................................................................................................................. 6-275
6.3.16 T codes (Timer functions) ............................................................................................................... 6-280
6.3.17 K codes (Keypad functions)............................................................................................................ 6-284
Chapter 7 BLOCK DIAGRAMS FOR CONTROL LOGIC
7.1 Symbols Used in Block Diagrams and their Meanings............................................................................... 7-1
7.2 Frequency Command Block........................................................................................................................ 7-2
7.3 Drive Command Block ............................................................................................................................... 7-4
7.4 V/f Control Block ....................................................................................................................................... 7-5
7.5 PID Process Control Block ......................................................................................................................... 7-7
7.6 External PID Process Control Block........................................................................................................... 7-9
7.7 FM1/FM2 Output Selector........................................................................................................................ 7-11
Chapter 8 RUNNING THROUGH RS-485 COMMUNICATION
8.1 Overview on RS-485 Communication ........................................................................................................ 8-1
8.1.1RS-485 common specifications........................................................................................................... 8-2
8.1.2 Terminal specifications for RS-485 communication ........................................................................... 8-3
8.1.3 Connection method ............................................................................................................................. 8-4
8.1.4 Communications support devices........................................................................................................ 8-6
8.1.5 Noise suppression ............................................................................................................................... 8-7
8.2 Overview of FRENIC Loader ..................................................................................................................... 8-8
8.2.1 Specifications ...................................................................................................................................... 8-8
8.2.2 USB port on the inverter unit .............................................................................................................. 8-9
Chapter 9 TROUBLESHOOTING

ix
9.1 Protective Functions.................................................................................................................................... 9-1
9.2 Before Proceeding with Troubleshooting.................................................................................................... 9-2
9.3 If an Alarm Code Appears on the Monitor.................................................................................................. 9-3
9.3.1 Alarm Codes ....................................................................................................................................... 9-3
9.3.2 If the "Light Alarm" Indication Appears ........................................................................................... 9-22
9.4 Nothing appears on the monitor................................................................................................................ 9-24
9.4.1 Abnormal motor operation ................................................................................................................ 9-24
9.4.2 Problems with inverter settings ......................................................................................................... 9-31
9.5 If Other than an Alarm Code is Displayed ................................................................................................ 9-33
Chapter 10 MAINTENANCE AND INSPECTION
10.1 Daily Inspection ........................................................................................................................................ 10-1
10.2 Periodic Inspection.................................................................................................................................... 10-1
10.3 List of Periodic Replacement Parts ........................................................................................................... 10-3
10.3.1 Judgment on service life.................................................................................................................... 10-4
10.4 Measurement of Electrical Amounts in Main Circuit ............................................................................... 10-8
10.5 Insulation Test ........................................................................................................................................... 10-9
10.6 Cooling Fan Replacement Procedure...................................................................................................... 10-10
Chapter 11 CONFORMITY WITH STANDARDS
11.1 Compliance with European Standards ...................................................................................................... 11-1
11.1.1 Conformity to the Low Voltage Directive in the EU......................................................................... 11-2
11.1.2 Compliance with EMC Standards ..................................................................................................... 11-8
11.1.2.1 General ...................................................................................................................................... 11-8
11.1.2.2 Recommended installation procedure ....................................................................................... 11-8
11.1.2.3 Leakage current of the EMC filter........................................................................................... 11-10
11.1.3 Harmonic Component Regulation in the EU .................................................................................. 11-14
11.1.3.1 General .................................................................................................................................... 11-14
11.1.3.2 Compliance with IEC/EN 61000-3-2 ...................................................................................... 11-14
11.1.3.3 Compliance with IEC/EN 61000-3-12 .................................................................................... 11-14
11.2 Conformity with UL Standards and cUL-listed for Canada.................................................................... 11-15
11.2.1 General............................................................................................................................................ 11-15
11.2.2 Conformity with UL standards and cUL-listed for Canada............................................................. 11-15
Appendices
App. A Advantageous Use of Inverters (Notes on electrical noise) ................................................................... 1
A.1 Effect of inverters on other devices........................................................................................................ 1
A.2 Noise ...................................................................................................................................................... 3
A.3 Noise prevention .................................................................................................................................... 5
App. B Effect on Insulation of General-purpose Motors Driven with 400 V Class Inverters .......................... 13
B.1 Generating mechanism of surge voltages............................................................................................. 13
B.2 Effect of surge voltages........................................................................................................................ 14
B.3 Countermeasures against surge voltages .............................................................................................. 14
B.4 Regarding existing equipment.............................................................................................................. 15
App. C Inverter Generating Loss...................................................................................................................... 16
App. D Connection Notes at Inverter Replacement Time
(Using the high power factor PWM converter, RHC series)........................................................................ 18

Chapter 1
About FRENIC-HVAC
This chapter describes the features, control system, outer appearance and recommended configuration of
peripheral equipment for FRENIC-HVAC.
Contents
1.1 Features...................................................................................................................................................... 1-1
1.2 Inspection of goods and product appearance ........................................................................................... 1-13
1.2.1 Inspection of goods......................................................................................................................... 1-13
1.2.2 Product appearance ......................................................................................................................... 1-15

1.1 Features
1-1
Chap. 1
About FRENIC
-HVAC
1.1 Features
Overview
FRENIC-HVAC is Fuji Electric’s first “slim-type inverter specially designed for saving energy.”
The device is ideal for all kinds of applications related to systems for supplying water and treating
wastewater.
Achieving significant energy savings in HVAC by the optimal control.

Wide capacity range
∙1 to 125 HP / 230V
∙1 to 1000 HP / 460V
∙1 to 300 HP / 575V

Protective structure
∙NEMA UL type1/ type12
∙Open type

Equipped with DC reactor (DCR) / EMC filter
Inverter capacity EMC filter DC reactor Enclosure
1 to 60 HP ( Three-phase 230V series )
1 to 125 HP ( Three-phase 460V series )
1 to 150 HP ( Three-phase 575V series )
Built-in Built-in NEMA UL
type1 / type12
075 to 125 HP ( Three-phase 230V series )
150 to 1000 HP ( Three-phase 460V series )
200 to 300 HP ( Three-phase 575V series )
Built-in Standard
accessory Open
DCR：IEC/EN 61000-3-2, IEC/EN 61000-3-12
■
Functions suitable for HVAC use
●4PID control
●Password function
●Fire mode (Forced operation)
●Filter clogging prevention function
●Pick-up operation function
●Automatic energy-saving operation
●Customizable logic
●Wet-bulb temperature presumption control
●Regenerative avoidance control
●Linearization function
●Real time clock
●Torque vector control
●Overload avoidance control
●Commercial operation switching
●Command loss detection
●Low torque detection
●Low torque detection
●Slow flowrate stop function

1-2

4PID control (standardly equipped with 4PID)
∙PID control (for process)
Can be used by switching 2 types of process commands and feedback value. “Filter clogging /
anti-jam, deviation alarm / absolute value alarm output” have been added to PID regulator that
conducts temperature, pressure or flow rate control, etc. An anti-reset wind-up function to
prevent PID control overshoot and PID control function that can be easily adjusted by PID
limiter or integral fold / reset signal are furthermore employed.
PID control (process) block diagram
∙External PID control (process)
Equipped with 3 built-in external PID controllers. You can independently control external
actuators such as dampers and valves. An externally mounted PID controller is no longer
required, thereby enabling cost reduction.
External PID control (process) block diagram
PID１ PV
+
-
PID１ SV
偏差
最大選択
最小選択
プ ロ セス指令値
フィードバック値
SV：Set Value
PV：Process Value
PID
調節器
正動作/
逆動作
演算器
速度指令
選択
PID制御
キャン セル
外部PID1出力
積分・微分リセット
積分ホールド
アン チリセットワイ ン ドアップ
+
-
フィードバック
選択
PID2 PV
PID2 SV
プ ロ セス指令値
PID
調節器
速度指令
選択
PID制御
キャン セル
外部PID2出力
正動作/
逆動作
積分・微分リセット
積分ホールド
アン チリセットワイ ン ドアップ
+
-
フィードバック
選択
PID3 PV
PID3 SV
プ ロ セス指令値
PID
調節器
正動作/
逆動作
PID制御
キャン セル
外部PID3出力
積分・微分リセット
積分ホールド
アン チリセットワイ ン ドアップ
速度指令
選択
External PID output
∙
Y1-Y4 pins
⇒Pulse output
∙
FM1/FM2 pins
⇒Analog output
Feedback value
Computing
unit
Process command
value
Feedback
selection
Process command value
Integral hold
Integral/differential reset
Anti
-reset wind-up
Integral hold
Integral/differential reset
Anti
-reset wind-up
Integral hold
Integral/differential reset
Anti
-reset wind-up
Speed
command
selection
PID
regulator
Forward/
reverse
Deviation
Max. selection
Min. selection
External PID1 output
Cancel PID
control 1
Feedback
selection
Cancel PID
control 2
Cancel PID
control 3
Speed
command
selection
Forward/
reverse
Forward/
reverse
External PID1 output
External PID1 output
PID
regulator
PID
regulator
SV: Set Value
PV: Process Value
Process command value
Speed
command
selection
PID１ PV
演算器
+
-
PID１ SV
+
-
フィード バック
選択
偏差
最大選択
最小選択
PID制御2/1切換
PID
調節器
アン チリセットワイ ン ドアップ
積分ホールド
積分・微分リセット
速度指令
選択
渇水保護
少水量停止機能
大水量保護
高頻度運転保護
フィルタ目詰まり/噛み込み防止
正動作/
逆動作
PID制御
キャン セル
周波数指令
PID2 PV
PID2 SV
プ ロ セス指令値
フィード バック値
プ ロ セス指令値
SV：Set Value PV：Process Value
フィード バック値
PID
1 SV
Speed
command
selection
PID
1
PV
PID2
SV
Computing
unit
Process command value
Feedback
selection
Process
command value
Feedback value
Feedback value
PID control 2/1 switching
PID control
cancel
Frequency
command
PID
regulator
Forward/
reverse
Integral hold
Integral/differential reset
Anti
-reset wind-
up
Filter clogging / anti-jam
Dry pump
detection
Slow flow rate
stop function
End of curve
detection
Control of maximum
starts per hour
PID2
PV

1.1 Features
1-3
Chap. 1
About FRENIC
-HVAC
●Fire Mode (forced operation)
Alarm is ignored and operation continues
until the inverter is damaged, and evacuation
route is secured without smoke permeation.
Pick-up operation function (speed sensor)
Smooth start by pick-up function.
If operating fan while operating without a load
when the inverter is not operating, pick-up is
executed smoothly by searching for speed
regardless of rotation direction. Convenient
function when instantaneously switching from
commercial power supply to inverter or
restarting from instantaneous power failure.
Power
source
voltage
Rotation
speed
Output
frequency
Current
Instantaneous
power failure

1-4
●Customizable logic
The customizable logic interface function is provided to the inverter body. This enables forming
of logic circuit and arithmetic circuit to the digital and analog input and output signals, allowing
simple relay sequence to be built while processing the signals freely.
Item
Content
Logic function
<Digital>
AND, OR, XOR, flip-flop, rise/fall detection, counter, etc.
<Analog>
Addition, subtraction, multiplication, limiter, absolute value, inverted
addition, comparison, max. value selection, min. value selection, avg.,
scale conversion
General-purpose
timer
On-delay, off-delay, pulse train, etc.
Time setting: 0.0–600s
Input/output signal
Terminal input/output, inverter control function
Others
Can comprise up to 14 steps, with each step input/output occurring in
combination
You can check the input/output status of the various steps by the keypad
having the LCD monitor.
< LCD monitor example >
* Numerical values of the screen display are not the same as in actual circumstances.
Digital + digital + timer
(AND circuit + on-delay timer)
Analog + analog + limiter
(Multiplication circuit + vertical limiter)
Analog + analog + comparison
(Deviation comparison 2)
Digital + digital + counter
(Up counter)
Function code + scale conversion Analog + 1 input + conversion
(Conversion 1)
Y3 pin
output
12 pin
C1 pin
U04
U05
+
-
U09
Step 2
Step 1
Step 2
Example: Digital (AND + on
-delay timer)
Example: Analog (subtraction + comparison 5)
Fref 0.00Hz
PRG>6>4
Step01:0021
RESET:Back to M
RESET:Back to M
Fref 0.00Hz
PRG>6>4
Step01:2052
RESET:Back to M
Fref 0.00Hz
PRG>6>4
Step01:0110
RESET:Back to M
Fref 0.00Hz
PRG>6>4
Step01:2151
RESET:Back to M
Fref 0.00Hz
PRG>6>4
Step01:3001
RESET:Back to M
Fref 0.00Hz
PRG>6>4
Step01:2003