McQuay MPS 030 Installation Manual

Download

Page 1

Operation and Maintenance Manual OM 844-1

Group: Rooftop Systems

Part Number: OM 844

Date: January 2007

MD2 Variable Speed Drive Controllers

Packaged Rooftop Units RPS, RFS, RDT, RPE, and RDE

Rooftop Air Handler Units RDS and RAH

Vertical Self-Contained Units SWP and SWT

Commercial Packaged Rooftop Units MPS 030 to 050 Tons

Page 2

Introduction.................................................................... 3

Applications With MicroTech II Control (A1a, A2, B1a,

B2, C, and D)............................................................ 4

Applications Without MicroTech II Controls (A1b and

B1b).......................................................................... 4

Replacement VFD .................................................... 4

Hazard Categories and Special Symbols ...................... 5

Before You Begin .......................................................... 6

Bus Voltage Measurement Procedure ..................... 7

Initial Start-Up........................................................... 8

Control Terminals .......................................................... 9

Switch Settings and Terminal Designations ................ 12

Integrated Display Terminal......................................... 13

Programming ............................................................... 15

Mode Access.......................................................... 15

Parameter Groups.................................................. 15

Access to Menus and Parameters ......................... 16

AUF Quick Menu....................................................... 17

AUF Quick Menu Parameters .............................. 18

Setting the Acceleration/Deceleration

Ramp Times ........................................................... 19

Setting the Macro Function .................................... 20

Setting the Mode of Operation ............................... 20

Command Mode Selection ..................................... 21

Frequency Mode Selection..................................... 21

Default Setting........................................................ 22

Forward/Reverse Run Selection ............................ 22

Maximum Frequency.............................................. 23

High Speed and Low Speed................................... 24

Nominal Motor Frequency and Voltage

Settings .................................................................. 24

V/Hz Control Mode Selection ................................. 25

Voltage Boost (Energy Recovery

Application Only) .................................................... 25

Electronic Motor Overload Protection..................... 26

Input Signal Selection ............................................ 28

Terminal Function Selection................................... 28

Jump Frequency (Jumping

Resonant Frequencies).......................................... 29

Switching Frequency.............................................. 30

Auto Restart ........................................................... 31

Drive Controller Fault Retention............................. 33

Output Phase Loss Detection ................................ 33

Input Phase Loss Detection ................................... 34

Avoiding Overvoltage Tripping ............................... 34

Undervoltage Fault................................................. 35

Changing the Display Parameter ........................... 36

Troubleshooting Fault and Alarm Codes..................... 37

Resetting the Drive Controller After a

Fault Condition ....................................................... 44

Appendix A—Input Terminal Functions....................... 45

Appendix B—Output Terminal Functions .................... 49

Appendix C—Receiving and Preliminary Inspection... 53

Storing and Shipping.............................................. 53

Lifting and Handling ............................................... 54

Precautions ............................................................ 54

Appendix D—Wiring Recommendations ..................... 60

Power Terminals .................................................... 63

Appendix E—Wiring Diagrams and

Parameter Settings...................................................... 65

LL (Lower Limit Frequency) ................................... 65

MODE KEY (LOCAL or REMOTE Keypad) ........... 65

MPS Rooftop with MicroTech II Controls for SAF and

EAF Applications.................................................... 66

Rooftop and Self-Contained with MicroTech II Controls

for SAF, RAF, and EAF Applications ..................... 69

Rooftop Controls by Others for SAF, RAF, and EAF

Applications............................................................ 72

Rooftop Energy Recovery Wheel Speed Control... 74

Page 3

Introduction

This manual provides information about the McQuay MD2 variable speed drive (VFD) that was originally factory installed within a McQuay HVAC unit. The manual describes operation of the VFD along with descriptions and functions of the VFD parameters for the models and applications listed below.

Specific packaged equipment wiring schematics and parameter settings can be found in Appendix E—Wiring Diagrams and Parameter Settings on page 65. Please refer to the rooftop or self-contained installation manual and/or operation manual for information on the unit controller and its control of the variable speed drive.

A. Packaged Rooftop models RPS, RFS, RDT, RPE, and RDE

1. VFDs for supply, return and exhaust air fan speed control

a. Units with Mircotech II control

b. Units without Microtech II control

2. VFDs for energy recovery wheel speed control

B. Rooftop Air Handler models RDS and RAH

1. VFDs for supply, return and exhaust air fan speed control

a. Units with Mircotech II control

b. Units without Microtech II control

2. VFDs for energy recovery wheel speed control

C. Vertical Self-Contained models SWP and SWT, supply fan speed control

D. Commercial Packaged Rooftop Model MPS

1. For supply and exhaust air fan speed control

WARNING

UNINTENDED EQUIPMENT OPERATION

• Modifying or changing parameters whose function is not described in this manual will affect drive controller operation. Some register changes will take effect as soon as they are entered.

• Do not modify or change parameters whose function is not described in this instruction bulletin.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

McQuay OM 844-1 3

Page 4

Introduction

Applications With MicroTech II Control (A1a, A2, B1a, B2, C, and D)

The variable speed drive has been selected and coordinated with the McQuay air conditioning equipment’s unit controller. The drive that is installed on the McQuay packaged equipment has the parameters modified for the HVAC application. For the standard HVAC system design, no further modifications should need to be made to the drive.

Applications Without MicroTech II Controls (A1b and B1b)

The McQuay variable speed drive parameters must be changed to coordinate the drive with the unit controls and the system it is being installed on. This manual describes the parameters that should be reviewed and adjusted. Other parameters should not be adjusted.

Replacement VFD

When replacing a VFD, the owner/installer must determine which of the above listed applications applies and follow the appropriate procedures within this manual.

4 McQuay OM 844-1

Page 5

Hazard Categories and Special Symbols

Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service, or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.

The addition of a lightning bolt or ANSI man symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed.

The exclamation point symbol is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

Symbol Name

Lightning Bolt

ANSI Man

Exclamation Point

DANGER

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation which, if not avoided, can result in death, serious injury, or equipment damage.

CAUTION

CAUTION indicates a potentially hazardous situation which, if not avoided, can result in minor or moderate injury.

CAUTION

CAUTION, used without the safety alert symbol, indicates a potentially hazardous situation which, if not avoided, can result in property damage.

McQuay OM 844-1 5

Page 6

Before You Begin

Read and understand these instructions before performing any procedure on this drive controller.

DANGER

HAZARDOUS VOLTAGE

• Read and understand this manual before installing or operating the MD2 drive controller. Installation, adjustment, repair, and maintenance must be performed by qualified personnel.

• The user is responsible for compliance with all international and national electrical code requirements with respect to grounding of all equipment.

• Many parts of this drive controller, including the printed circuit boards, operate at the line voltage. DO NOT TOUCH. Use only electrically insulated tools.

• Before servicing the drive controller:

— Disconnect all power.

— Place a “DO NOT TURN ON” label on all power disconnects.

— Lock all power disconnects in the open/off position.

• DO NOT touch unshielded components or terminal strip screw connections with voltage present.

• DO NOT short across terminals PA/+ and PC/- or across the DC bus capacitors.

• Install and close all covers before applying power or starting and stopping the drive controller.

• Disconnect all power, including external control power that may be present, before servicing the drive controller. WAIT 10 MINUTES to allow the DC bus capacitors to discharge. Then follow the DC bus voltage measurement procedure on page 7 to verify that the DC voltage is less than 45 V. The drive LEDs are not accurate indicators of the absence of DC bus voltage.

Failure to follow these instructions will result in death or serious injury.

CAUTION

IMPROPER DRIVE CONTROLLER OPERATION

• If the drive controller is de-energized for a prolonged period, the performance of the electrolytic capacitors will be reduced.

• Once a year, apply power to the drive controller for at least 5 hours to restore the performance of the capacitors, then check its operation.

• If the drive has not been powered for more than a year, do not connect the drive controller to the line voltage. Gradually increase the voltage using an adjustable AC source.

Failure to follow these instructions can result in injury and equipment damage.

6 McQuay OM 844-1

Page 7

Before You Begin

DANGER

AUTOMATIC RESTART ENABLED

• This drive controller can restart under fault conditions.

• Equipment must be shut down, locked out and tagged out to perform servicing or maintenance.

Failure to follow this instruction will result in death or serious injury.

Bus Voltage Measurement Procedure

Before working on the drive controller, turn it off and wait 10 minutes to allow the DC bus to discharge and then measure the DC bus voltage.

DANGER

HAZARDOUS VOLTAGE

Read and understand the precautions in “Before You Begin” on page 6 before performing this procedure.

Failure to follow this instruction will result in death or serious injury.

The DC bus voltage can exceed 1,000 Vdc. Use a properly rated voltage-sensing device when performing this procedure. To measure the DC bus voltage:

1. Disconnect all power and wait 10 minutes to allow the DC bus to discharge.

2. Measure the voltage of the DC bus between the PA/+ and PC/– terminals to ensure that the voltage is less than 45 Vdc.

3. If the DC bus capacitors do not discharge completely, contact your local McQuay representative. Do not repair or operate the drive controller.

Figure 1: Capacitor Charging LED

Capacitor charging LED

RUN

PRG

MON

RUN STOP

Loc Rem

MODE

ENT

McQuay OM 844-1 7

Page 8

Before You Begin

Initial Start-Up

Before providing power to the VFD, refer to the appropriate unit installation/maintenance manual(s) listed below:

• IM 738 for packaged rooftops with air-cooled condensers (RPS, RFS, and RDT)

• IM 487 for rooftop air handlers (RDS and RAH)

• IM 791 for packaged rooftops with evaporative condensers (RPE and RDE)

• IM 708 for one-piece self-contained units

• IM 709 for modular self-contained units

Perform the following (RPS/RDT example) general procedures on the specific unit purchased (yours may differ slightly depending on the unit)

1. Before closing (connecting) the power disconnect switch, open (disconnect) the following unit control circuit switches:

a. Turn system switch S1 to OFF

b. Turn system switch S7 to OFF

2. Confirm duct static pressure sensor SPS1 is connected to the ductwork.

3. Confirm the VFD lugs for the line voltage are tight.

4. Confirm the horsepower (hp) of the drive matches that of the motor.

Before starting the fan and VFD

1. Close the unit disconnect switch. With the control system switch S1 in the OFF position, power should be available only to the control circuit transformer (TI) and the compressor crankcase heaters.

2. Turn the Switch S1 to ON. Power should now be supplied to the control panel, and the LEDs on MCB1 should follow the normal startup sequence (refer to the “MCB LED Power-Up Sequence” of IM 696).

3. Verify all duct isolation dampers are open. Unit mounted isolation dampers may be mounted in the supply or return sections.

4. Place the unit into the “Fan Only” mode through the keypad menu System Summary\System\Ctrl Mode= Fan Only.

5. Confirm the power supply matches the setting of the J7J parameter.

6. Confirm the power supply frequency matches that of the J7 parameter.

7. Confirm the thermal protection level, tHr (or amps), matches that of the motor.

NOTE: All of the above parameters can be quickly found in the AUF Quick menu.

Start the fan and VFD

1. Turn Switch S7 to ON. The controller should enter the “Startup Initial” operating state. If the fan does not run:

a. Check fuses F1 and F3.

b. Check that the manual motor protectors or circuit breakers have not tripped.

c. Check the optional phase monitor.

2. If the fans are equipped with optional spring isolators, check the fan spring mount adjustment. When the fans are running they should be level.

3. Verify the rotation is correct.

4. Verify the DHL safety is opening at a pressure compatible with duct working pressure limits.

NOTE: Refer to the unit IMs for additional non-VFD instructions.

8 McQuay OM 844-1

Page 9

Control Terminals

The control terminals are illustrated in Figure 2 (refer to Appendix E—Wiring Diagrams and Parameter Settings for more details).

Figure 2: Control Terminals

SOURCE

PLC

SINK

SW4

PLC

P24 CC

SW4

F R RES FM

Connector (RJ45)

FLA FLB FLC R Y RC

FM VIA

VIV

SW2 SW3

PP VIA VIB CC

Factory settings:

SW4:

FM: V side

VIA: V side

•

• Tightening torque: 0.6 Nm

SOURCE side (positive)

Maximum wire size: 2.5 mm² (AWG 14)

(5.3 lb.in)

DANGER

UNINTENDED EQUIPMENT OPERATION

• The accidental grounding of logic inputs configured for Sink Logic can result in unintended activation of drive controller functions.

• Protect the signal conductors against damage that could result in unintentional conductor grounding.

• Follow NFPA 79 and EN 60204 guidelines for proper control circuit grounding practices.

Failure to follow these instructions will result in death or serious injury.

WARNING

RISK OF IMPROPER OPERATION

The MD2 logic input selector switch (SW4) is factory-set to the source position. The switch should never be moved to the PLC or sink position.

Failure to follow this instruction can result in death or serious injury.

McQuay OM 844-1 9

Page 10

Control Terminals

Table 1: Control Terminal Characteristics

Terminals Function Characteristics

External

PLC

power supply input

P24

Internal supply

CC Common 0 V common (2 terminals)

FLA, FLB, FLC

Configurable relay outputs

RY, RC

Logic inputs

RES

Analog output

Internal

supply available

+24 Vdc input for external power supply for logic inputs Max. permissible voltage: 50 Vac

Short-circuit and overload protection:

24 Vdc supply (min. 21 V, max. 27 V), maximum current: 200 mA

One relay logic output, one N/C contact, and one N/O contact with common point Minimum switching capacity: 3 mA for 24 Maximum switching capacity:

• On resistive load: 5 A for 250 Vac or 30

• On inductive load: 2 A for 250 Vac or 30

Max. response time: 7ms ± 0.5ms Electrical service life: 100,000 operations

One relay logic output, one N/O contact Minimum switching capacity: 3 mA for 24 Maximum switching capacity:

• On resistive load: 5 A for 250 Vac or 30

• On inductive load: 2 A for 250 Vac or 30

Max. response time: 7ms ± 0.5ms Electrical service life: 100,000 operations

Three programmable logic inputs, 24 level 1 PLC, IEC 65A-68 standard Impedance: 3.5 kΩ Maximum voltage: 30 V Max. sampling time: 2 ms ± 0.5 ms Multiple assignment makes it possible to configure several functions on one input

Positive logic (Source): State 0 if ≤ 5 V or logic input not wired, state 1 if ≥ 11 V

Negative logic (Sink): State 0 if ≥ 16 V or logic input not wired, state 1 if ≤ 10 V

One switch-configurable voltage or current analog output:

• Voltage analog output 0–10 Vdc, minimum load impedance 470 Ω

• Current analog output X–Y mA by programming X and Y from 0 to

20 mA, maximum load impedance: 500 Ω

Max. sampling time: 2 ms ± 0.5 ms Resolution: 10 bits Accuracy: ± 1% for a temperature variation of 60°C Linearity: ± 0.2%

Short-circuit and overload protection:

One 10.5 Vdc ± 5% supply for the reference potentiometer (1 to 10 kΩ), maximum current: 10 mA

Vdc

, compatible with

10 McQuay OM 844-1

Page 11

Table 1: Control Terminal Characteristics (continued)

Terminals Function Characteristics

Switch-configurable voltage or current analog input:

• Voltage analog input 0–10 Vdc, impedance 30 kΩ (max. safe

voltage: 27 Vdc +/- 3 Vdc)

• Analog current input X–Y mA by programming X and Y from 0 to

20 mA, with impedance 242 Ω

Max. sampling time: 2 ms ± 0.5 ms Resolution: 11 bits Accuracy: ± 0.6% for a temperature variation of 60°C Linearity: ± 0.15% of the maximum value

•

0–10

Vdc

, impedance 30 kΩ (max. safe voltage 27 Vdc)

• Max. sampling time: 2 ms ± 0.5 ms

• Resolution: 11 bits

• Accuracy: ± 0.6% for a temperature variation of 60°C

• Linearity: ± 0.15% of the maximum value

VIA

VIB

Analog/logic input

Analog input Voltage analog input:

Control Terminals

McQuay OM 844-1 11

Page 12

Switch Settings and Terminal Designations

Figure 3: Switches

Voltage/current selection for analog I/O (FM and VIA)

SW4

Source (positive logic)

PLC Sink (negative logic)

SW4

V (voltage)

Selection of logic

type

FM VIA

V (voltage)

I (current)I (current)

SW2 SW3

NOTE: Refer to Appendix E—Wiring Diagrams and Parameter Settings on page 65 for your specific HVAC application and switch settings.

NOTE: The logic input switch SW4 is set to the source position. The switch should never be moved to the PLC or sink position.

DANGER

UNINTENDED EQUIPMENT OPERATION

• The accidental grounding of logic inputs configured for Sink Logic can result in unintended activation of drive controller functions.

• Protect the signal conductors against damage that could result in unintentional conductor grounding.

• Follow NFPA 79 and EN 60204 guidelines for proper control circuit grounding practices.

Failure to follow these instructions will result in death or serious injury.

Table 2: Drive Controller Default Terminal Function Assignments

Terminal Function

FLA-FLB-FLC relay

RY-RC relay

F Forward (2-wire control)

R Preset speed

RES Fault reset

VIA Speed reference 0-10 Vdc

VIB Not assigned

FM Output frequency

De-energized in the event of a fault or when the power supply is disconnected

Energized when the speed is greater than or equal to low speed (LL)

12 McQuay OM 844-1

Page 13

Integrated Display Terminal

The LEDs and keys on the integrated display terminal are illustrated in Figure 4.

Figure 4: Description of Display Terminal

RUN

PRG

MON

Loc Rem

RUN STOP

MODE

ENT

NOTE: Display terminal functions described above reflect VFD default settings.

Table 3: Display Terminal Features

LED/Key Characteristics

1 Display RUN LED

2 Display PRG LED

3 Display MON LED

4 Display unit Four digits, seven segments

5 Display unit LED

6 Navigation arrows

7 Arrow LED

8 Loc/Rem LED Illuminates when Local mode is selected

9Mode

10 Loc/Rem key Switches between Local and Remote modes

11 ENT

12 RUN LED Illuminates when the Run key is enabled

• Illuminates when a run command is applied to the drive controller

• Flashes when there is a speed reference present

• Illuminates when Adjustment mode is active

• Flashes in AUF–Gr.U modes

• Illuminates when Monitoring mode is active

• Flashes in fault record display mode

• The % LED illuminates when a displayed numeric value is a

percentage

• The Hz LED illuminates when a displayed numeric value is in hertz

Depending on the mode, you can use the arrows to:

• Navigate between the menus

• Change a value

• Change the speed reference when the Arrow LED (7) is lit

Illuminates when the navigation arrows are controlling the speed reference

Press to select the Mode (see Figure 5)

• Display mode (default)

• Adjustment mode

• Monitoring mode

Can also be used to go back to the previous menu

Press to display a parameter’s value or to save a changed value

McQuay OM 844-1 13

Page 14

Integrated Display Terminal

Table 3: Display Terminal Features (continued)

LED/Key Characteristics

13 RUN

14 STOP

Pressing this key when the RUN LED is illuminated starts the drive controller

Stop/reset key

In Local mode (see table item #10), pressing the STOP key decelerates the drive to a stop

In Remote mode (see table item #10), while the VFD is being controlled by the unit controller, pressing the STOP key will allow the drive to freewheel stop (drive display will indicate a flashing “E”)

If F735 is set to 0 (default setting), pressing the stop key twice will reset the flashing “E” fault and other resettable faults if the fault condition has been resolved

DANGER

STOP BUTTON CAN CAUSE MOTOR RESTART

• The Stop Button on this drive controller can reset faults and restart the motor if an active run command is present.

• Disable all run commands and inspect the drive system for the cause of the fault before activating a fault reset.

• Disable the panel reset operation (F735) to remove this hazard.

Failure to follow these instructions will result in death or serious injury.

14 McQuay OM 844-1

Page 15

Programming

Mode Access

MD2 drive controllers have three modes of operation described in Table 4.

Table 4: Mode Descriptions

Display mode (default)

Adjustment mode

Monitoring mode

• Active when power is applied to the drive controller

• Use to display drive controller parameters, alarms, and faults

• Use to modify drive controller parameters

• Use to monitor drive controller status

Figure 5 illustrates how to access the modes with the display terminal MODE key.

Figure 5: Mode Access

RUN

Display mode

(default)

60.0

MODE

PROG

Adjustment

mode

AUF

Monitoring

MODE MODE

mode

Fr-F

MON

Parameter Groups

MD2 drive controllers are factory programmed per your HVAC application (refer to Appendix E—Wiring Diagrams and Parameter Settings for your application options and settings).To restore McQuay factory settings, use parameter “tYp” (see Default Setting on page 22).

WARNING

UNINTENDED EQUIPMENT OPERATION

• Any parameter values altered from the VFD control panel will affect the operation of the drive.

• If parameter “ parameters will be transferred into the VFD memory and may affect safe operation of the equipment.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

tYp” is selected and changed, altered

Table 5: MD2 Parameter Groups

Parameter Type Description

Basic parameters Parameters that need validation before using the drive controller.

Extended Parameters (menu F---)

User Parameters (menu Gr.U.)

Quick menu (menu AUF) Subset of Basic and Extended parameters frequently used.

History Parameters (menu AUH)

McQuay OM 844-1 15

Parameters for special settings and applications.

Subset of Basic and Extended parameters whose values have changed from the VFD default settings.

Subset of Basic and Extended parameters displaying the five parameters that were last changed, displayed in reverse chronological order.

Page 16

Programming

Access to Menus and Parameters

Figure 6 illustrates how to access menus.

Figure 6: Menu Access

Display

Mode

RUN

MOD

60.0

Adjustment

Mode

AUH

PROG

MOD

AUF

Monitoring

Mode

Fr-F

Figure 7: Access to Parameters

AU1

ENT

ACCAUF

GrU

F---

Basic

Parameters

AUF

AU1

10.1

NOTE: Press the MODE key to go back to the previous level. For example:

— To go from 9.9 to

dEC

— To go from

AUF

dEC

ENT

dEC

9.9

ENT

Confirm value

16 McQuay OM 844-1

Page 17

AUF Quick Menu

Figure 8 illustrates the parameters accessible from the AUF Quick menu.

Figure 8: AUF Quick Menu Parameters

ENT

HEAD

AU1

ACCAUF

dEC

tHr

Top of list

Automatic ramp adaptation

Acceleration ramp times

Deceleration ramp times

Minimum motor frequency

Maximum motor frequency

Motor thermal protection

Analog output scaling

Motor control profile

uLu

END

Nominal motor frequency

Nominal motor voltage

End of list

McQuay OM 844-1 17

Page 18

AUF Quick Menu

AUF Quick Menu Parameters

Table 6 describes the parameters that can be accessed from the AUF Quick menu. With the exception of ACC and dEC, the parameters cannot be modified while the drive controller is running.

Table 6: AUF Quick Menu Parameters

Code Description Unit Adjustment Range

ACC Acceleration time Seconds 0.0 to 3200

dEC Deceleration time Seconds 0.0 to 3200

tHr

FN Analog output scaling — Do not use

uLu

Frequency lower limit (minimum motor frequency)

Frequency upper limit (maximum motor frequency)

Motor electronic thermal protection level in amperes. Adjust tHr to the nominal current value which appears on the motor nameplate.

Selection of Volts/Hz control mode (motor control profile)

Base frequency (nominal motor frequency)

Voltage at base frequency (nominal motor voltage)

In is the nominal drive current shown on the drive controller nameplate.

Hz 0.0 to uL

Hz 0.5 to 200.0

A 0.1 to 1 times In

0: V/Hz profile constant torque 1: V/Hz profile variable torque 2: Automatic voltage boost

—

Hz 25 to 200.0

3: Flux vector control 4: Energy saving 6: Permanent magnet synchronous motor

50 to 330 (230 V drive controllers) 50 to 660 (460 V drive controllers)

NOTE: With the exception of drive controller is running.

18 McQuay OM 844-1

ACC

and

dEC

, the parameters cannot be modified while the

Page 19

Setting the Acceleration/Deceleration

O f

Output

Ramp Times

AUF Quick Menu

-<$

Acceleration/deceleration ramp adaptation. Automatically adjusts the acceleration/deceleration ramp times to match the inertia of the load.

-//

Programs the time it takes for the drive controller output frequency to go from 0 Hz to the maximum frequency (parameter FH).

@1/

Programs the time it takes for drive controller output frequency to go from maximum frequency (parameter FH), to 0 Hz.

Table 7: Setting Ramp Time Parameters

Parameter Name Range

AU1

Automatic Acceleration/ Deceleration Ramp Adaptation

0: Disabled 1: Automatic 2: Automatic acceleration only (Do not use)

ACC Acceleration Time 1 0.0 to 3200 s

dEC Deceleration Time 1 0.0 to 3200 s

See Appendix E—Wiring Diagrams and Parameter Settings on page 65 for McQuay settings.

Acceleration/Deceleration Ramp Adaptation

• AU1 = 0: Function is disabled.

• AUI = 1: Automatically adjusts the acceleration and deceleration ramp times

from 1/8–8 times the value set in the ACC or dEC parameters, depending on the current rating of the drive controller.

• AUI = 2: Do not use.

Figure 9: Automatic Ramp Adaptation

utput

requency (Hz)

When load is small ... When load is large ...

Acceleration

Time

shorten acceleration/deceleration time. lengthen acceleration/deceleration time.

Deceleration

Time

frequency (Hz)

Time (seconds)

Acceleration

Time

Deceleration

Time

Time (second

McQuay OM 844-1 19

Page 20

AUF Quick Menu

Manually Setting Acceleration/Deceleration Ramp Times

During startup, confirm parameters ACC and dEC match the parameters in Appendix E—Wiring Diagrams and Parameter Settings.

Figure 10: Manually Setting the Acceleration/Deceleration Ramp Times

Output frequency (Hz)

ACC dEC

AUI=0 (Manual)

Time (seconds)

Setting the Macro Function

-<'

Table 8: Parameter AU4

Parameter Name

AU4 Macro Function

NOTE: The current setting of this parameter is shown on the left side of the display. The number 0 is always displayed on the right. For example, indicates that the freewheel stop setting is enabled.

Sets the drive controller to one of four macro configurations. The macro configuration selection automatically determines the settings of the following parameters: CMOd, FMOd, F110–F113, and F201.

Range (refer to Appendix E—Wiring Diagrams and Parameter Settings for values)

0: Disabled 1: Freewheel stop 2: 3-wire operation 3: + - speed from logic input(s) 4: 4–20 mA current input operation

Setting the Mode of Operation

In Remote mode, start and stop commands and the frequency are determined by the settings of CMOd (Command mode) and FMOd (Frequency Setting mode).

LOC

When Local mode is selected with the key, start/stop commands and frequency settings can only be made from the display terminal. The Local LED illuminates while Local mode is selected. See page 13 for Local/Remote key operation and Local LED.

When service is complete, return the VFD to the remote mode.

WARNING

UNINTENDED EQUIPMENT OPERATION

• Modifying or changing parameters whose function is not described in this manual will affect drive controller operation. Some register changes will take effect as soon as they are entered.

• Do not modify or change parameters whose function is not described in this instruction bulletin.

Failure to follow this instruction can result in death or serious injury.

20 McQuay OM 844-1

REM

Page 21

Command Mode Selection

AUF Quick Menu

CNOd

Specifies which command source has priority in issuing Start and stop commands.

NOTE: You must stop the drive controller before changing the setting of

CMOd

Table 9: Parameter CMOd

Parameter Name Range

0: Terminal board 1: Display terminal 2: Serial communication

CNOd

Command Mode Selection

• CMOd = 0: Start and stop commands via the logic inputs on the control terminal board.

• CMOd = 1: The and keys on the display terminal start and stop the drive controller.

• CMOd = 2: The serial link sends start and stop commands to the drive controller.

Some functions, when assigned to an input terminal, are commanded by the input terminal even if CMOd is set to 1 (display terminal).

Priority commands via a serial link can take precedence over the setting of CMOd.

Frequency Mode Selection

289@

command.

Table 10: Parameter FMOd

Specifies which input device has priority in issuing a speed reference

Parameter Name Range

1: VIA 2: VIB (not used with McQuay

FNOd

NOTE: You must stop the drive controller before changing the setting of operation is allowed with all settings of

Frequency Mode Selection

controls) 3: Display terminal 4: Serial communication (not used with McQuay controls) 5: +/- speed from logic input(s)

FMOd

. Preset speed

• FMOd = 1: Speed Reference command via analog input terminal VIA (0-10 Vdc or 4-20 mAdc).

• FMOd = 2: Speed Reference command via analog input terminal VIB (0-10 Vdc)

- not used with McQuay controls.

• FMOd = 3: Speed reference via the and arrow keys on the display terminal or the optional remote keypad.

• FMOd = 4: Speed reference via serial communication link - not used with McQuay controls.

• FMOd = 5: Speed reference from +/- speed from logic input(s)

McQuay OM 844-1 21

Page 22

AUF Quick Menu

Default Setting

tYp

This parameter provides a variety of functions to reset, restore and save

parameter settings.

WARNING

UNINTENDED EQUIPMENT OPERATION

• Drive controller default parameter settings will be substituted for the present settings when value 3 (standard default settings) of thetYP parameter is selected.

• Drive controller default parameter settings may not be compatible with the application.

• Contact McQuay product support before initiating standard default settings.

Failure to follow these instructions can result in death, serious injury, or equipment damage

Table 11: Parameter tYP

Parameter Name Range

0: 1: 50 Hz default 2: 60 Hz default 3: Standard default settings (Initialization)

tYp Default Setting

4: Clear the fault record 5: Clear the cumulative operation time 6: Initialize the type information 7: Save the user-defined parameters (do not use)* 8: Recalls your McQuay defined parameters 9: Clear the cumulative fan operation time

* You may replace McQuay parameters if this is used.

NOTE: You must stop the drive controller before changing the setting of

NOTE: The following parameters are not affected by settings 1, 2, and 3:

FN, FNSL, F109, F470F473

NOTE: The setting display of this parameter contains two numbers. The left-most number displays the last operation performed. The right-most number indicates the pending operation and should be adjusted for the action desired.

, and

F880

tYP

Forward/Reverse Run Selection

keypad display.

Table 12: Parameter 2H

Parameter Name Range

NOTE: For more information, contact your McQuay representative.

22 McQuay OM 844-1

Programs the direction of motor rotation when starting the drive from the

Forward/ Reverse Run Selection

0: Forward run 1: Reverse run (do not use) 2: Forward run with forward/ reverse switching (do not use) 3: Reverse run with forward/reverse switching (do not use)

Page 23

Maximum Frequency

AUF Quick Menu

Programs the maximum output frequency of the drive controller. This value is used as the maximum frequency reference for the acceleration and deceleration ramps.

CAUTION

UNINTENDED EQUIPMENT OPERATION

• Do not use above 60Hz.

Failure to follow this instruction can result in equipment damage.

Table 13: Parameter FH

Parameter Name Range

NOTE: You must stop the drive controller before changing the setting of FH.

Figure 11: Maximum Frequency

Output frequency (Hz)

Maximum Frequency

80 Hz

60 Hz

30–200 (Hz)

When FH = 80 Hz

When FH = 60 Hz

NOTE:

can not be adjusted during operation

value can not exceed FH value.

100 % Frequency setting signal (%)

McQuay OM 844-1 23

Page 24

AUF Quick Menu

High Speed and Low Speed

Programs the high speed.

Programs the low speed.

Table 14: Parameters UL and LL

Parameter Name Range

UL High Speed 0.5–FH (Hz)

LL Low Speed 0.0–UL (Hz)

Figure 12: High speed and low speed

High Speed Low Speed

Output frequency (Hz) Output frequency (Hz)

0 100 %

Speed Reference signal Speed Reference signal

100 %

Nominal Motor Frequency and Voltage Settings

J7, J7J

Table 15: Parameters J7 and J7u

Parameter Name Range

uLu Voltage Setting

Figure 13: Nominal motor frequency and voltage settings

uLu

Output voltage (V)

Use these parameters to set the nominal motor frequency (uL) and voltage settings (uLu) to the motor nameplate values.

Nominal Motor Frequency

Output frequency

25.0–200.0 Hz

50.0–330 V: 200 V Class

50.0–660 V: 400 V Class

24 McQuay OM 844-1

Page 25

V/Hz Control Mode Selection

AUF Quick Menu

Use this parameter to set the V/Hz control mode.

Table 16: Parameter Pt

Parameter Name Range

0: V/Hz constant (do not use) 1: Variable torque 2: Automatic voltage boost control 3: Vector control (do not use) 4: Energy saving (do not use) 5: No assignment (do not use) 6: PM motor control (do not use)

V/Hz Control Mode Selection

Voltage Boost (Energy Recovery Application Only)

Table 17: Parameter ub

Parameter Name Range

ub Voltage Boost 0.0–30.0%

Use this parameter to increases the voltage boost rate. This function is useful for applications where the torque is not adequate at low speeds.

Figure 14: Voltage Boost

uLu

(V)/(%)

Output voltage

Output frequency (Hz)

V/Hz Control Mode (Pt) must be set to 0 (V/Hz constant) or 1 (variable torque) to use this function.

The optimum setting for Voltage Boost depends on the drive controller capacity. Increasing Voltage Boost too much can cause the drive controller to fault on an overcurrent at start up.

McQuay OM 844-1 25

Page 26

AUF Quick Menu

OLN

Electronic Motor Overload Protection

tHr

Motor rated current value (FLA)

Electronic motor overload characteristics

F632

Electronic motor overload memory

These parameters must be set to match the rating and characteristics of the motor (refer to the motor nameplate, full load amps).

Table 18: Electronic Thermal Protection Parameter Settings

Parameter Name Adjustment Range

tHr

OLN

F632

“In.” corresponds to the drive rated current indicated on the drive controller nameplate.

Motor Electronic Thermal Protection

Electronic Thermal Protection Characteristic

Electronic Motor Thermal State Memory

0.1–1.0 In.1 Set to the rated current indicated on the motor nameplate.

Setting Value

1 Enabled Enabled

2 Disabled Disabled

3 Disabled Enabled

(do not use)

Cooled

Motor

Forced

Cooled

Motor

0: Disabled

1: Enabled

Overload

Protection

Enabled Disabled

Self

Enabled Disabled

Enabled Enabled

Disabled Disabled

Disabled Enabled

Overload

Stall

CAUTION

MOTOR OVERHEATING

This drive controller does not provide direct thermal protection for the motor. Use of a thermal sensor in the motor may be required for protection at all speeds and load conditions. Consult the motor manufacturer for thermal capability of the motor when operated over the desired speed range.

Failure to follow this instruction can result in injury or equipment damage.

26 McQuay OM 844-1

Page 27

AUF Quick Menu

Setting tHr, and OLM

Use electronic thermal protection characteristics (OLM) to enable or disable the motor overload fault function (97%) and the overload stall function.

While the drive controller overload fault (OL1, see page 26) is always enabled, motor overload fault (97%) can be selected using parameter OLM.

Overload stall is used with variable torque loads such as fans, pumps, and blowers, in which the load current decreases as the operating speed decreases. When the drive controller detects an overload, overload stall automatically lowers the output frequency before the motor overload fault, OL2, is activated. This function maintains the motor at frequencies that allow the load current to remain balanced so that the drive controller can continue operation without tripping.

NOTE: Do not use overload stall with constant torque loads such as conveyor belts in which load current is fixed with no relation to speed.

Self Cooled Motors

To set electronic thermal protection characteristics, OLM, for a self-cooled motor, refer to Table 18.

If the capacity of the motor is smaller than the capacity of the drive controller, or the rated current of the motor is smaller than the rated current of the drive controller, set the electronic thermal protection level, tHr, to the motor's nominal rated current value.

Figure 15: Motor Electronic Thermal Protection:

Self-cooled motor

Output current factor

(%)/(A)

tHr

x 1.0

tHr

x 0.55

Output frequency (Hz)30 Hz

Motor Electric Thermal Protection Retention, 2)&%

The setting of this parameter determines whether electric thermal calculation values are retained when power is removed. Enabling the parameter (F632 = 1) causes the electric thermal calculation values to be retained when power is removed.

NOTE: For installations to meet Article 430 of the National Electric Code, parameter F632 must be set to 1.

McQuay OM 844-1 27

Page 28

AUF Quick Menu

Input Signal Selection

2$#,

VIA terminal function selection

This parameter allows you to select an analog or digital input for the VIA terminal.

Table 19: Parameter F109

Parameter Name Range

0: Analog input 1: Do not use (sinking input assignment) 2: Digital (sourcing) input

F109

Analog/Digital Input Function Selection (VIA Terminal)

When using the VIA terminal as a digital input terminal, set the VIA slide switch to the V position. For switch location see Figure 2.

DANGER

UNINTENDED EQUIPMENT OPERATION

• The accidental grounding of logic inputs configured for Sink Logic can result in unintended activation of drive controller functions.

• Protect the signal conductors against damage that could result in unintentional conductor grounding.

• Follow NFPA 79 and EN 60204 guidelines for proper control circuit grounding practices.

Failure to follow these instructions will result in death or serious injury.

Terminal Function Selection

Modifying Input Terminal Functions

Table 20: Parameters F110, F111, F112, F113, and F118

Terminal Symbol

— F110

F F111 Logic Input

R F112 Logic Input

RES F113 Logic Input

VIA F118 Input Terminal

The functions selected with parameters F110 are always active.

Parameter Name Range

Always-Active Function (the control input function assigned to this parameter will always be active).

(refer to Appendix E—

Wiring Diagrams and

0–71

Parameter Settings)

28 McQuay OM 844-1

Page 29

Modifying Output Terminal Functions

Jumping width 1 (

F271

)

Jumping width 2 (

F273

)

Jumping width 3 (

F275

)

Jump frequency 3 (

F274

)

Jump frequency 1 (

F270

)

Jump frequency 2 (

F272

)

Output command frequency

(Hz)

Frequenc y setting si gnal

AUF Quick Menu

2$&#

Output terminal selection 1A (RY-RC)

Figure 16: Application Example

Function of RY-RC: Can be set using parameter F130

Table 21: Assigning One Function to an Output Terminal

Terminal Symbol

RY-RC F130

Parameter Name Range

0–255

(Refer to Appendix Output Terminal Selection 1A

E—Wiring Diagrams

and Parameter

Settings on page 65,

for McQuay settings)

Jump Frequency (Jumping Resonant Frequencies)

2%*#

2%*$

2%*%

2%*&

2%*'

2%*(

Resonance due to the natural frequency of the mechanical system can be avoided by jumping the resonant frequency during operation.

Figure 17: Jump Frequency Timing Diagram

Jump Frequency 1

Jumping Width 1

Jump Frequency 2

Jumping Width 2

Jump Frequency 3

Jumping Width 3

McQuay OM 844-1 29

Page 30

AUF Quick Menu

Table 22: Jump Frequency Parameter Setting

Parameter Name Range

F270 Jump Frequency 1 0.0–FH (Hz)

F271 Jump Width 1 0.0–30.0 (Hz)

F272 Jump Frequency 2 0.0–FH (Hz)

F273 Jump Width 2 0.0–30.0 (Hz)

F274 Jump Frequency 3 0.0–FH (Hz)

F275 Jump Width 3 0.0–30.0 (Hz)

NOTE: The jump frequency plus jump width may not overlap another jump frequency plus jump width.

NOTE: During acceleration or deceleration, the jumping function is disabled for the operation frequency.

Switching Frequency

2&##

2&$%

Switching Frequency

Random Mode

The F300 parameter allows the audible noise from the motor to be changed by altering the switching frequency.

In addition, the F300 parameter reduces the electromagnetic noise generated by the drive controller. Decrease the switching frequency to reduce electromagnetic noise.

NOTE: Although the electromagnetic noise level is reduced when decreasing switching frequency, the acoustic noise of the motor is increased.

The F312 parameter (random mode) reduces motor electromagnetic and acoustic noise by changing the pattern of the switching frequency.

Table 23: Parameters F300, F312

Parameter Name Range

F300 Switching Frequency 6.0–16.0 (kHz)

F312 Random Mode

0: Disabled 1: Enabled

30 McQuay OM 844-1

Page 31

Auto Restart

AUF Quick Menu

2&#&

Select the number of restarts

DANGER

AUTOMATIC RESTART ENABLED

• This drive controller can restart under fault conditions.

• Equipment must be shut down, locked out and tagged out to perform servicing or maintenance.

Failure to follow these instructions will result in death or serious injury.

This parameter resets the drive controller automatically if it is in an alarm state.

Table 24: Parameter F303

Parameter Name Range

F303 Number of Restarts

Table 25: Causes of Tripping and Corresponding Restart Processes

Cause of Tripping

Momentary power failure

Overcurrent

Overvoltage

Overload

Overheating

Restart Process Canceling Conditions

Up to 10 restarts in succession

1st restart: 1 second after tripping

2nd restart: 2 seconds after tripping

3rd restart: 3 seconds after tripping

10th restart: About 10 seconds after tripping

0: Disabled 1–10: 1 to 10 restarts

Auto restart is possible only after the following faults: momentary power failure, overcurrent, overvoltage, or overload.

The restart function will be canceled if restarting is not successful within the specified number of times.

Restart is disabled when the faults or errors listed in Table 26 occur.

Table 26: Faults Which Cannot Be Automatically Reset

OCA Motor overcurrent at start up

OCL Overcurrent on load side at start up

EPHO Output phase loss

OH2 External thermal fault

Ot Overtorque fault

E External fault stop

UC Low-current operation fault

UPI Undervoltage fault (main circuit)

EF2 Ground fault

EPH1 Input phase loss

EtYP Drive controller error

Err2 Main unit RAM fault

Err3 Main unit ROM fault

Err4 CPU fault

McQuay OM 844-1 31

Page 32

AUF Quick Menu

Table 26: Faults Which Cannot Be Automatically Reset

OCA Motor overcurrent at start up

OCL Overcurrent on load side at start up

EPHO Output phase loss

OH2 External thermal fault

Ot Overtorque fault

E External fault stop

UC Low-current operation fault

UPI Undervoltage fault (main circuit)

EF2 Ground fault

EPH1 Input phase loss

EtYP Drive controller error

Err2 Main unit RAM fault

Err5 Remote control error

Err7 Current detector fault

Err8 Control circuit board format error

EEP1 EEPROM fault 1

EEP2 EEPROM fault 2

EEP3 EEPROM fault 3

Etn1 Auto-tuning error

E-18 VIA input detection error

E-19 Main unit CPU communication error

E-20 Excessive voltage boost

E-21 CPU fault 2

CAUTION

MOTOR OVERHEATING

• Repeated reset of the thermal overload can result in thermal stress to the motor.

• When faults occur, promptly inspect the motor and driven equipment for problems such as locked shaft and mechanical overload before restarting. Also check the power supplied to the motor for abnormal conditions such as phase loss and phase imbalance.

Failure to follow these instructions can result in equipment damage.

When using Auto Restart, observe the following:

• By default, protective operation detection relay signals (FLA-FLB-FLC terminal signals) are not sent during an auto restart process. To allow a signal to be sent to the protective operation detection relay (FLA-FLB-FLC terminals) during an auto restart process, assign value 36 or 37 to parameter F132.

• A calculated cooling time is provided for overload tripping (OL1, OL2, OLr). In this case, the auto restart function operates after the calculated cooling time and the restart time.

• In the event of an overvoltage fault (OP1–OP3), the auto restart function is not activated until the voltage in the DC section comes down to a normal level.

• In the event of an overheating fault (OH), the auto restart function is not activated until the drive controller temperature is low enough to restart operation.

32 McQuay OM 844-1

Page 33

AUF Quick Menu

• When F602 is set to 1 (fault retained), the restart function is not performed, regardless of the setting of F303.

• During an auto restart process, the display alternates between “rtry” and the setting specified by display mode selection parameter F710.

• The number of auto restarts is cleared if the drive controller does not fault for the specified period of time after a successful restart. A successful restart means that the drive controller output frequency reaches the command frequency without causing the drive controller to fault again.

Drive Controller Fault Retention

2)#%

Drive controller fault retention

This parameter can be set to retain fault information for display after power has been cycled.

Table 27: Parameter F602

Parameter Name Range

0: Clear the fault information when power

F602

Drive Controller Fault Retention Selection

is removed 1: Retain the fault information when the power is removed

The causes of up to four trips can be displayed in status monitor mode.

Output Phase Loss Detection

2)#(

The setting of this parameter determines how the drive controller responds after detecting an output phase loss. If the phase loss status persists for one second or more, the drive controller will fault, the FL relay will be activated, and fault code EPHO will be displayed.

Output phase loss detection mode

Table 28: Parameter F605

Parameter Name Range

0: Disabled 1: At start-up (only one time after power is

Output Phase Loss

F605

NOTE: If the drive controller detects an all-phase loss (i.e. contactor opening), it will restart on completion of recondition. The drive controller does not check for output phase loss when restarting after a momentary power loss.

McQuay OM 844-1 33

Detection (one second or greater).

turned on) 2: At start-up (each time) 3: During operation 4: At start-up and during operation 5: Detection of cutoff on output side

Page 34

AUF Quick Menu

DC Voltage

Output Frequency

F626

Over-voltage stall protection level

Input Phase Loss Detection

2)#+

Input phase loss detection mode selection

Setting this parameter to 1 (default) enables Input Phase Loss Detection. During a complete input phase loss event the drive controller will fault (code EPHI) and the FL relay will be activated.

NOTE: The drive controller may not fault on all input phase imbalance conditions.

Input phase loss nuisance tripping on low source impedance power systems may indicate the need to install an AC input line reactor.

Table 29: Parameter F608

Parameter Name Range

F608 Input Phase Loss Detection

0: Disabled 1: Enabled

Setting F608 to 0 (input phase loss detection disabled) may result in damage to the drive controller if operation is continued under a heavy load during an input phase loss.

Avoiding Overvoltage Tripping

2&#(

2)%)

Overvoltage limit operation

Overvoltage stall protection level

Use these parameters to keep the output frequency constant, or to increase it to prevent overvoltage tripping should the voltage in the DC section rise during deceleration or varying speed operation. The deceleration time during overvoltage limit operation may increase above the designated time. Overvoltage stall protection level sets the percentage of the nominal DC bus level where the drive will modify the output frequency to prevent an Overvoltage fault.

Figure 18: Overvoltage Limit Operation Level

CAUTION

MOTOR OVERHEATING

• Repetitive braking can cause motor overheating and damage if the Quick Deceleration or Dynamic Quick Deceleration features are active.

• Use of a thermal sensor in the motor is recommended to protect the motor during repetitive braking.

Failure to follow these instructions can result in injury or equipment damage.

34 McQuay OM 844-1

Page 35

AUF Quick Menu

Table 30: Parameters F305, F626

Parameter Name Range

0: Enabled

F305

F626

* McQuay setting = 140%. If power transients are more common than normal, increase toward 150%.

Overvoltage Limit Operation

Overvoltage Stall Protection Level

1: Disabled 2: Enabled (quick deceleration - do not use) 3: Enabled (dynamic quick deceleration - do not use)

100–150%*

If F305 is set to 2 (quick deceleration), the drive controller will increase the voltage to the motor (over-excitation control) to increase the amount of energy consumed by the motor when the voltage reaches the overvoltage protection level. The motor can therefore be decelerated more quickly than with normal deceleration.

If F305 is set to 3 (dynamic quick deceleration), the drive controller will increase the voltage to the motor (over-excitation control) to increase the amount of energy consumed by the motor as soon as the motor begins to slow down. The motor can therefore be decelerated even more quickly than with quick deceleration.

Undervoltage Fault

2)%*

The setting of this parameter determines how the drive controller responds when it detects an undervoltage. The fault code displayed is UPI.

Table 31: Parameter F627

Parameter Name Range

F627

Undervoltage fault/alarm selection

0: Alarm only (input voltage level below 60%) The drive controller stops but does not fault (the FL relay is not activated).

1: Fault (detection level below 60%)

The drive controller stops and faults when Undervoltage Fault/Alarm Selection

the input voltage is less than 60% of it's

rating.

2: Alarm only (input voltage level below 50%,

input reactor needed)

The drive controller stops but does not fault

when the input voltage is less than 50% of it's

rating. A line reactor must be used with this

setting.

McQuay OM 844-1 35

Page 36

AUF Quick Menu

Changing the Display Parameter

2*$#

Display selection

When power is applied to the drive controller, it is in display mode. The display terminal shows operation frequency as the default setting.

Table 32: Parameter F710

Parameter Name Range

0: Operation frequency (Hz/free unit/step) 1: Frequency command (Hz/free unit/step) 2: Output current (%/A) 3: Drive controller rated current (A) 4: Drive controller load factor (%) 5: Output power 6: Frequency command after PID control (Hz/free unit/step) 7: Optional item specified from an external control unit 8: Output speed of fan motor 9: Communication counter 10: Normal state communication counter

F710

Display Selection

36 McQuay OM 844-1

Page 37

Troubleshooting Fault and Alarm Codes

When an alarm or fault occurs, use Tables 33 and 34 to diagnose and resolve the problem.

If the problem cannot be resolved by any of the actions described in the tables, refer to the programming guide or contact your McQuay representative.

Drive Controller Fault Conditions

Table 33: Fault Codes

Error Code

OC1

OC1p

OC2

OC2P

OC3

OC3P

0C1p

0C2p

0C3p

Failure Code

0001

0025

0002

0026

0003

0027

0025

0026

0027

Problem Possible Causes Remedies

• Increase the acceleration

time, ACC.

Overcurrent during acceleration

Transistor overcurrent

Overcurrent during deceleration

Transistor overcurrent

Overcurrent during constant speed operation

Transistor overcurrent

Ground fault

Motor overcurrent at start-up

(for 15 and 20 hp models only)

• The acceleration time

ACC is too short.

• The V/Hz setting is

improper.

• A restart signal is input to

the rotating motor after a momentary stop, etc.

• A special motor (e.g.

motor with a small impedance) is used.

• Possible ground fault.

• The deceleration time

dECis too short.

• Possible ground fault.

• The load fluctuates

abruptly.

• Mechanical blockage

• A current leaked from an

output cable or the motor to ground.

• A main circuit elements

is defective.

• Check the V/Hz

parameter.

• Use F301 (auto-

restart) and F302(ride- through control).

• Adjust the switching

frequency F300.

• Set the switching

frequency control mode selection parameter F316 to 1 or 3 (switching frequency decreased automatically).

• Increase the deceleration

time dEC.

• Set the switching

frequency control mode selection parameter F316 to 1 or 3 (switching frequency decreased automatically).

• Reduce the load

fluctuation.

• Check the load (operated

machine).

• Set the switching

frequency control mode selection parameter F316 to 1 or 3 (switching frequency decreased automatically).

• Contact your Mcquay

representative.

• Check the cables

connecting the drive controller to the motor, and check the motor insulation.

• Reduce the switching

frequency.

• Connect output filters in

series with the motor.

McQuay OM 844-1 37

Page 38

Troubleshooting Fault and Alarm Codes

Table 33: Fault Codes (continued)

Error Code

Failure Code

Problem Possible Causes Remedies

Overcurrent (an

OCL 0004

overcurrent on the load side at start-up)

Motor

OCA 0005

overcurrent at start-up

EpH1* 0008 Input phase loss

EPH0* 0009

Output phase loss

Overvoltage

Op1 000A

during acceleration

Overvoltage

Op2 000B

during deceleration

• The insulation of the

output main circuit or motor is defective.

• Motor impedance is too

low

• Current is leaked from an

output cable or the motor to ground.

• A main circuit elements

is defective.

• Possible ground fault

• Input phase loss, blown

fuse

• Three-phase drive

controller used on a single phase line supply

• Input phase imbalance

• Transient phase fault

• Loss of phase at drive

controller output

• Downstream contactor

open

• Motor not connected

• Instability in the motor

current

• Drive controller

oversized for motor

• Line voltage too high

• Line supply transients

• A restart signal is input to

the rotating motor after a momentary stop, etc.

• There is possibility of

output phase loss.

• The deceleration time

dEC is too short. (regenerative energy is too large.)

• F305 (overvoltage

limit operation) is off.

• The input voltage

fluctuates abnormally:

• Overhauling load

• There is possibility of

output phase loss.

• Check the cables and

wires for defective insulation.

• Check cables,

connectors, and so on for ground faults.

• Check the cables

connecting the drive controller to the motor, and check the motor insulation.

• Reduce the switching

frequency.

• Connect output filters in

series with the motor.

• Contact your McQuay

representative.

• Check the main circuit

input line for phase loss.

• Enable F608 (input

phase loss detection).

• Check the main circuit

output line, motor, etc. for phase loss.

• Enable F605 (output

phase loss detection).

• Check the line voltage.

Compare with the drive controller nameplate rating.

• Reset the drive controller.

• Install a line reactor

• Use F301 (auto-

restart) and F302 (ridethrough control).

• Check the main circuit

output line, motor, etc. for phase loss.

• Increase the deceleration

time dEC.

• Enable F305

(overvoltage limit operation).

• Check the main circuit

output line, motor, etc. for phase loss.

38 McQuay OM 844-1

Page 39

Table 33: Fault Codes (continued)

Troubleshooting Fault and Alarm Codes

Error Code

Failure Code

Problem Possible Causes Remedies

Overvoltage

Op3 000C

during constantspeed operation

OL1 000D

Drive controller overload

OL2 000E Motor overload

Ot*

0020

Over-torque fault

Drive controller

0010

over temperature

OH2

002E

External thermal fault

E 0011 Emergency stop

• The input voltage

fluctuates abnormally.

• The motor is in a

regenerative state because the load causes the motor to run at a frequency higher than the drive controller output frequency.

• There is possibility of

output phase loss.

• The acceleration time

ACC is too short.

• The DC braking level is

too large.

• The V/Hz setting is

improper.

• A restart signal is input to

the rotating motor after a momentary stop, etc.

• The load is too large.

• The V/Hz setting is

improper.

• The motor is locked.

• Low-speed operation is

performed continuously.

• An excessive load is

applied to the motor during operation.

• Over-torque during

operation.

• The cooling fan does not

rotate.

• The ambient

temperature is too high.

• The vent is blocked.

• A heat generating device

is installed close to the drive controller.

• The thermistor in the unit

is broken.

• External thermal fault.

• External PTC probe

fault.

• During automatic

operation or remote operation, a stop command is entered from the operation panel or a remote input device.

• Check the main circuit

output line, motor, etc. for phase loss.

• Increase the acceleration

time ACC.

• Reduce the DC braking

amount F251 and the DC braking timeF252.

• Check the V/Hz

parameter setting.

• Use F301 (auto-

restart) and F302 (ridethrough control).

• Use an drive controller

with a larger rating.

• Check the V/Hz

parameter setting.

• Check the load (operated

machine).

• Adjust OLN to the

overload that the motor can withstand during operation in a low speed range.

• Enable F615 (over-

torque fault selection).

• Check system error.

• Restart the operation by

resetting the drive controller after it has cooled down.

• The fan requires

replacement if it does not rotate during operation.

• Ensure sufficient space

around the drive controller.

• Do not place any heat

generating device near the drive controller.

• Contact your McQuay

representative.

• Check the external

thermal input.

• Check the PTC in the

motor.

• Reset the drive controller.

McQuay OM 844-1 39

Page 40

Troubleshooting Fault and Alarm Codes

Table 33: Fault Codes (continued)

Error Code

Failure Code

Problem Possible Causes Remedies

EEp1 0012 EEPROM fault 1

EEp2 0013 EEPROM fault 2

EEp3 0014 EEPROM fault 3

Err2 0015

Err3 0016

Main unit RAM fault

Main unit ROM fault

Err4 0017 CPU fault 1

Err5*

0018

Err7 001A

Communication error

Current detector fault

Err8 001B Network error

UC* 001D

Low-current operation fault

Undervoltage

Up1* 001E

fault

(main circuit)

EF2 0022 Ground fault

Etn* 0054

EtYp 0029

Auto-tuning error

Drive controller type error

• Turn off the drive

controller, then turn it

• Data writing error.

• Power supply is cut off

during tYp operation and data writing is aborted.

• A data reading error

occurred.

• The control RAM is

defective.

• The control ROM is

defective.

• The control CPU is

defective.

• An error arises during

serial communication.

• The current detector is

defective.

• The error has occurred

during Network communication.

• The output current

decreased to a lowcurrent detection level during operation.

• The input voltage (in the

main circuit) is too low.

• A ground fault occurs in

the output cable or the motor.

• Check the motor parameter F401 to F494.

• The motor with the capacity of 2 classes or less than

the drive controller is used.

• The output cable is improperly sized.

• The motor is rotating.

• The drive controller is used for loads other than those of

three-phase induction motors.

• Circuit board is changed.

(or main circuit/drive circuit board)

again. If it does not recover from the error, contact your McQuay representative.

• Turn the power off

temporarily and turn it back on, and then try tYp operation again.

• Turn off the drive

controller, then turn it again. If it does not recover from the error, contact your McQuay representative.

• Contact your McQuay

representative.

• Contact your McQuay

representative.

• Contact your McQuay

representative.

• Check the remote control

device, cables, etc.

• Contact your McQuay

representative.

• Check the Network

device and wiring.

• Enable F610 (low-

current detection).

• Check the suitable

detection level for the system (F611, F612).

• Check the input voltage.

• Enable F627

(undervoltage fault selection).

• To cope with a

momentary stop due to undervoltage, enable F302 (ride-through control) and F301 (auto-restart).

• Check the cable and the

motor for ground faults.

• Contact your McQuay

representative.

40 McQuay OM 844-1

Page 41

Table 33: Fault Codes (continued)

Troubleshooting Fault and Alarm Codes

Error Code

E-18* 0032

E-19 0033

E-20 0034

E-21 0035 CPU fault 2

SOUt 002F

Failure Code

Problem Possible Causes Remedies

Break in analog signal cable

CPU communication error

Excessive voltage boost

Step-out (for PM motor only)

• The signal input via VIA

is below the analog signal detection level set with F633.

• A communications error

occurs between control CPUs.

• The voltage boost

parameter F402 is set too high.

• Impedance of the motor

is too low

• The control CPU is

defective.

• The motor shaft is

locked.

• One output phase is

open.

• An impact load is

applied.

* You can select a trip ON/OFF by parameters.

• Check the cables for

breaks. And check the setting of input signal or setting value of F633.

• Contact your McQuay

representative.

• Decrease the setting of

the voltage boost parameter F402.

• Contact your McQuay

representative.

• Unlock the motor shaft.

• Check the interconnect

cables between the drive controller and the motor.

McQuay OM 844-1 41

Page 42

Troubleshooting Fault and Alarm Codes

Drive Controller Alarm Conditions

Alarms do not cause the drive controller to fault.

Table 34: Alarm Codes

Error Code

OFF

Problem Possible Causes Remedies

ST terminal OFF

Undervoltage

NOFF

in main circuit

rtrY

Restart in process

Frequency

Err1

point setting error alarm

Clear

CLr

command acceptable

Emergency

EOFF

stop command acceptable

Setting error alarm /

H1 LO

An error code and data are displayed alternately twice each.

HEAd End

Display of first/last data items

db DC braking

Flowing out

of excess number of digits

Momentary power failure slowdown

StOp

stop prohibition function activated.

Auto-stop because of continuous

LStp

operation at the lowerlimit frequency

• The ST-CC circuit is opened. • Close the ST-CC circuit.

• Measure the main circuit supply

• The supply voltage between R,

S and T is under voltage.

• The drive controller is in the

process of restart.

• A momentary stop occurred.

• The frequency setting signals

at points 1 and 2 are set too close to each other.

• This message is displayed

when pressing the STOP key while an error code is displayed.

• The operation panel is used to

stop the operation in automatic control or remote control mode.

• An error is found in a setting

when data is reading or writing.

• The first and last data item in

the auh data group is displayed.

• DC braking in process

• The number of digits such as

frequencies is more than 4. (The upper digits have a priority.)

• The slowdown stop prohibition

function set with F302 (momentary power failure ridethrough operation) is activated.

• The automatic stop function

selected with F256 was activated.

voltage. If the voltage is at a normal level, the drive controller requires repairing.

• The drive controller is operating

normally if it restarts after several tens of seconds.

• Set the frequency setting signals

at points 1 and 2 apart from each other.

• Press the STOP key again to

clear the fault.

• Press the STOP key for an

emergency stop. To cancel the emergency stop, press any other key.

• Check whether the setting is

made correctly.

• Press MODE key to exit the data

group.

• The message goes off in several

tens of seconds if no problem occurs.

• Lower the frequency free unit

magnification F702.

• To restart operation, reset the

drive controller or input an operation signal again.

• To deactivate the automatic stop

function, increase the frequency command above the lower-limit frequency (LL) + 0.2 Hz or turn off the operation command.

42 McQuay OM 844-1

Page 43

Table 34: Alarm Codes (continued)

Troubleshooting Fault and Alarm Codes

Error Code

Problem Possible Causes Remedies

Parameters

InIt

in the process of initialization

Operation

E-17

panel key fault

Atn1 Auto-tuning

h999

H999

Integral input power

Integral output power

• Parameters are being

initialized to default values.

• The RUN or STOP key is held

down for more than 20 seconds.

• The RUN or STOP key is

faulty.

• Auto-tuning in process

• Integral input power is more

than 999.99 kWh.

• Integral output power is more

than 999.99 kWh.

• Normal if the message

disappears after a while (several seconds to several tens of seconds).

• Check the operation panel.

• Normal if it the message

disappears after a few seconds.

• Press and hold down the key for

3 seconds or more when power is off or when the input terminal function CKWH is turned on or displayed.

• Press and hold down the key for

3 seconds or more when power is off or when the input terminal function CKWH is turned on or displayed.

McQuay OM 844-1 43

Page 44

Troubleshooting Fault and Alarm Codes

Pre-Alarm Displays

Table 35: Pre-alarm codes

L Overload alarm

Overcurrent alarm

Overvoltage alarm

Overheating alarm

Same as OC (overcurrent)

Same as OP (overvoltage)

Same as OL1 and OL2 (overload)

Same as OH (overheating)

The pre-alarms are displayed, blinking, in the following order from left to right: C, P, L, 4.

If two or more problems arise simultaneously, one of the following alarms appears and blinks: CP, PL, CPL.

Resetting the Drive Controller After a Fault Condition

Do not reset the drive controller when faulted because of a failure or error before eliminating the cause of the fault. Resetting the tripped drive controller before eliminating the problem causes it to fault again.

The drive controller can be reset after a fault with any of the following operations:

1. Turning off the power.

2. Using external signal.

3. Using the Stop key on the display terminal:

a. Press the STOP key and make sure that CLr is displayed.

b. Eliminate the cause of the fault.

c. Press the STOP key again to reset the drive controller.

4. Inputting a fault clear signal from a remote communication device.

When any overload function (OL1 or OL2) is active, the drive controller cannot be reset by inputting a reset signal from an external device or with the Stop key on the display terminal if the calculated cooling time has not expired. Calculated cooling time:

• OL1: 30 seconds after the fault has occurred

• OL2: 120 seconds after the fault has occurred

CAUTION

MOTOR OVERHEATING

• Repeated reset of the thermal state after a thermal overload can result in thermal stress to the motor.

• When faults occur, promptly inspect motor and driven equipment for problems (locked shaft, mechanical overload, etc.) before restarting. Also check power supplied to the motor for abnormal conditions (phase loss, phase imbalance, etc.).

Failure to follow these instructions can result in equipment damage.

44 McQuay OM 844-1

Page 45

Appendix A—Input Terminal Functions

The input terminals F, R, and RES can be configured with the settings in Table 36.

Table 36: Input Terminal Functions

Function

No.

# - No function is assigned Disabled

$* ST Standby terminal

% F Forward run command

& R Reverse run command

( AD2

) SS1 Preset-speed command 1 * SS2 Preset-speed command 2 + SS3 Preset-speed command 3

$#* RES Reset command

$$* EXT

$& DB DC braking command ON: DC braking

$' PID PID control prohibited

$( PWENE

$)*ST+RES

%# F+AD2

%$ R+AD2

%% F+SS1

%& R+SS1

%' F+SS2

%( R+SS2

%) F+SS3

Code Function Action

ON: Ready for operation

OFF: Coast stop (gate off)

ON: Forward run OFF: Slowdown stop

ON: Reverse run OFF: Slowdown stop

Acceleration/deceleration 2 pattern selection

Fault stop command from external input device

Permission of parameter editing

Combination of standby and reset commands

Combination of forward run and acceleration/deceleration 2

Combination of reverse run and acceleration/deceleration 2

Combination of forward run and preset-speed command 1

Combination of reverse run and preset-speed command 1

Combination of forward run and preset-speed command 2

Combination of reverse run and preset-speed command 2

Combination of forward run and preset-speed command 3

ON: Acceleration/deceleration 2

OFF: Acceleration/deceleration 1 or 3

Selection of 7-speed with SS1 to SS3 (3 bits)

ON: Acceptance of reset command

ON → OFF: Fault reset

ON: E Fault stop

ON: PID control prohibited

OFF: PID control permitted

ON: Parameter editing permitted

OFF: Parameter editing prohibited (IfF700=1)

ON: Simultaneous input from ST and RES

ON: Simultaneous input from F and AD2

ON: Simultaneous input from R and AD2

ON: Simultaneous input from F and SS1

ON: Simultaneous input from R and SS1

ON: Simultaneous input from F and SS2

ON: Simultaneous input from R and SS2

ON: Simultaneous input from F and SS3

McQuay OM 844-1 45

Page 46

Appendix A—Input Terminal Functions

Table 36: Input Terminal Functions (continued)

Function

No.

%* R+SS3

&# F+SS1+AD2

&$ R+SS1+AD2

&% F+SS2+AD2

&& R+SS2+AD2

&' F+SS3+AD2

&( R+SS3+AD2

&+*FCHG

&, VF2

'# MOT2

'$*UP

'%*DOWN

'&*CLR

''*CLR+RES

Code Function Action

Combination of reverse run and preset-speed command 3

Combination of forward run, preset-speed command 1 and acceleration/deceleration 2

Combination of reverse run, preset-speed command 1 and acceleration/deceleration 2

Combination of forward run, preset-speed command 2 and acceleration/deceleration 2

Combination of reverse run, preset-speed command 2 and acceleration/deceleration 2

Combination of forward run, preset-speed command 3 and acceleration/deceleration 2

Combination of reverse run, preset-speed command 3 and acceleration/deceleration 2

Frequency command forced switching

No.2 Switching of V/Hz setting

No.2 motor switching

(VF2 + AD2 + OCS2)

Frequency UP signal input from external contacts

Frequency DOWN signal input from external contacts

Frequency UP/DOWN cancellation signal input from external contacts

Combination of frequency UP/DOWN cancellation and reset by means of external contacts

ON: Simultaneous input from R and SS3

ON: Simultaneous input from F, SS1 and AD2

ON: Simultaneous input from R, SS1 and AD2

ON: Simultaneous input from F, SS2 and AD2

ON: Simultaneous input from R, SS2 and AD2

ON: Simultaneous input from F, SS3 and AD2

ON: Simultaneous input from R, SS3 and AD2

ON: F207 (if F200=0) OFF: FNOd

ON: No.2 V/Hz setting (pt=0, F170, F171, F172, F173)

OFF: No.1 V/Hz setting (Set value of pt, uL, ulu, ub, tHr)

ON: No.2 motor (pt=0, F170, F171,

F172, F173, F185, F500, F501, F503)

OFF: No.1 motor (set value of pt, uL, uLu, ub, tHr, ACC, dEC, F502, F601)

ON: Increase in frequency

ON: Reduction in frequency

OFF → ON: Resetting of UP/DOWN frequency by means of external contacts

ON: Simultaneous input from CLR and RES

46 McQuay OM 844-1

Page 47

Appendix A—Input Terminal Functions

Table 36: Input Terminal Functions (continued)

Function

No.

'(* EXTN

')*OH

'**OHN

'+ SC/LC

', HD

($*CKWH

(%* FORCE

(&* FIRE Fire-speed control

('* STN Freewheel stop (gate off) ON: Freewheel stop (gate off)

((* RESN Inversion of RES

() F+ST

(* R+ST

)$ OCS2

)%* HDRY

)'* PRUN

)( ICLR

Code Function Action

Inversion of fault stop command from external device

Thermal fault stop signal input from external device

Inversion of thermal fault stop command from external device

Forced switching from remote to local control

Operation holding (stop of 3-wire operation)

Display cancellation of the cumulative power amount (kWh)

Forced operation (factory configuration required)

Combination of forward run and standby

Combination of reverse run and standby

Forced switching of stall prevention level 2

Holding of RY-RC terminal output

Cancellation (clearing) of operation command from panel

PID control integral value clear

OFF: E Fault stop

ON: OH2Fault stop

OFF: OH2 Fault stop

Enabled when remote control is exercised

ON: Local control (setting of CNOd, FNOd and F207)

OFF: Remote control

ON: F (forward run)/R: (reverse run) held, 3-wire operation

OFF: Slowdown stop

ON: Monitor display cancellation of the cumulative power amount (kWh)

ON: Forced operation mode in which operation is not stopped in the event of the occurrence of a soft fault (preset speed operation frequency

15) To use this function, the inverter needs to be so configured at the factory.

OFF: Normal operation

ON: Fire-speed operation (F244) Forced fire speed setting frequency

OFF: Normal operation

ON: Acceptance of reset command

OFF→ ON: Fault reset

ON: Simultaneous input from F and ST

ON: Simultaneous input from R and ST

ON: Enabled at the value of F185

OFF: Enabled at the value of F601

ON: Once turned on, RY-RC are held on.

OFF: The status of RY-RC changes in real time according to conditions.

0: Operation command canceled (cleared)

1: Operation command retained

ON: PID control integral value always zero

OFF: PID control permitted

McQuay OM 844-1 47

Page 48

Appendix A—Input Terminal Functions

Table 36: Input Terminal Functions (continued)

Function

No.

)) ST+F+SS1

)* ST+R+SS1

)+ ST+F+SS2

), ST+R+SS2

*# ST+F+SS3

*$ ST+R+SS3

* When function

(', ((, )%

enabled even if the parameter command mode selection

Code Function Action

Combination of standby, forward run and presetspeed command 1

Combination of standby, reverse run and presetspeed command 1

Combination of standby, forward run and presetspeed command 2

Combination of standby, reverse run and presetspeed command 2

Combination of standby, forward run and presetspeed command 3

Combination of standby, reverse run and presetspeed command 3

ON: Simultaneous input from ST, F and SS1

ON: Simultaneous input from ST, R and SS1

ON: Simultaneous input from ST, F and SS2

ON: Simultaneous input from ST, R and SS2

ON: Simultaneous input from ST, F and SS3

ON: Simultaneous input from ST, R and SS3

$, $#, $$, $), &+, '$, '%, '&, '', '(, '), '*, ($, (%, (&

, or )' is assigned to an input terminal board, the input terminal board is

CNOd

is set at 1 (panel).

48 McQuay OM 844-1

Page 49

Appendix B—Output Terminal Functions

The output terminals FLA, FLB, FLC, RY, and RC can be configured with the settings in Table 37.

Table 37: Output Terminal Functions

Function

No.

# LL Low speed

$ LLN Inversion of low speed Inversion of LL setting

% UL High speed

& ULN Inversion of high speed Inversion of UL setting

' LOW

( LOWN

) RCH

* RCHN

+ RCHF

, RCHFN

$# FL

$$ FLN

Code Function Action

ON: The output frequency is above the LL set value.

OFF: The output frequency is equal to or less than the LL set value.

ON: Output frequency is equal to or higher than UL value.

OFF: Output frequency is lower than UL value.

ON: Output frequency is equal to or

Low-speed detection signal

Inversion of low-speed detection signal

Designated frequency attainment signal (completion of acceleration/deceleration)

Inversion of designated frequency attainment signal (inversion of completion of acceleration/deceleration)

Set frequency attainment signal

Inversion of set frequency attainment signal

Failure signal (fault output)

Inversion of failure signal (inversion of fault output)

higher than F100value.

OFF: Output frequency is lower than F100 value.

Inversion of LOW setting

ON: The output frequency is equal to or less than the specified frequency ± frequency set with F102.

OFF: The output frequency is above the specified frequency ± frequency set with F102.

Inversion of RCH setting

ON: The output frequency is equal to or less than the frequency set with F101 ± F102.

OFF: The output frequency is above the frequency set with F101 ± F102.

Inversion of RCHF setting

ON: When inverter is tripped

OFF: When inverter is not tripped

Inversion of FL setting

McQuay OM 844-1 49

Page 50

Appendix B—Output Terminal Functions

Table 37: Output Terminal Functions (continued)

Function

No.

$% OT Over-torque detection

$& OTN

$' RUN Start/Stop

$( RUNN Inversion of RUN/STOP Inversion of RUN setting

$) POL OL pre-alarm

$* POLN Inversion of OL pre-alarm Inversion of POL setting

%# POT

%$ POTN

%% PAL Pre-alarm

%& PALN Inversion of pre-alarm Inversion of PAL setting

%' UC Low-current detection

%( UCN

%) HFL Significant failure

%* HFLN

Code Function Action

ON: Torque current is equal to or larger than set value and longer than F618 set time.

OFF: The torque current is equal to or less than (F616 set value F619 set value).

Inversion of over-torque detection

Over-torque detection pre-alarm

Inversion of over-torque detection pre-alarm

Inversion of low-current detection

Inversion of significant failure

Inversion of OT

ON: When operation frequency is output or during (db)

OFF: Operation stopped

ON: 50% or more of calculated value of overload protection level

OFF: Less than 50% of calculated value of overload protection level

ON: Torque current is equal to or larger than 70% of F616 set value.

OFF: The torque current is below (F616 set value x 70% - F619 set value).

Inversion of POT setting

One of the following is turned on: ON POL, POHR, POT, MOFF, UC, OT, LL, stop, COT, and momentary power failure slowdown stop.

Or C, p, or H issues an alarm

All the following are turned off: OFF POL, POHR, POT, MOFF, UC, OT, LL, stop, COT, and momentary power failure slowdown stop.

Or C, p, or H issues no alarm

ON: The output current is equal to or less than F611 (set value) for F612 (set time).

Inversion of UC setting

ON: OCA, OCL, Ot, E,

EEP1, Etn, EPHO, Err2– 5, OH2, UP1, EF2, UC, EtYP, or EPH1)

OFF: Failure other than the above

Inversion of HFL setting

50 McQuay OM 844-1

Page 51

Appendix B—Output Terminal Functions

Table 37: Output Terminal Functions (continued)

Function

No.

%+ LFL Insignificant failure

%, LFLN

&# RDY1

&$ RDY1N

&% RDY2

&& RDY2N

&' FCVIB Frequency VIB selection

&( FCVIBN

&) FLR

&* FLRN

&+ OUT0 Specified data output 1

&, OUT0N

'% COT

'& COTN

'' LTA Parts replacement alarm

'( LTAN

Code Function Action

Inversion of insignificant failure

Ready for operation (including ST/RUN)

Inversion of ready for operation (including ST/RUN)

Ready for operation (excluding ST/RUN)

Inversion of ready for operation (excluding ST/RUN)

Inversion of frequency VIB selection

Fault signal (put out also at the time of a restart)

Inversion of failure signal (put out also at the time of a restart)

Inversion of specified data output 1

Cumulative operation time alarm

Inversion of cumulative operation time alarm

Inversion of replacement alarm

ON: (OC1–3, OP1–3, OH, OL1–2, OLr)

OFF: Failure other than the above

Inversion of LFL setting

ON: Ready for operation (ST and RUN are also ON)

OFF: Others

Inversion of RDY1 setting

ON: Ready for operation (ST and RUN are not ON)

OFF: Others

Inversion of RDY2

ON: VIB selected as frequency command

OFF: Terminal other than VIB selected as frequency command

Inversion of FCVIB

ON: When inverter trips or restarts

OFF: When inverter does not trip or restart

Inversion of FLR

ON: Specified data from remote control FA50: BIT0= 1

OFF: Specified data from remote control FA50: BIT0= 0

Inversion of OUT0 setting

ON: Cumulative operation time is equal to or longer than F621

OFF: Cumulative operation time is shorter than F621

Inversion of COT

ON: Calculation for parts replacement time is equal to or longer than the preset time

ON: Calculation for parts replacement time is shorter than the preset time

Inversion of LTA

McQuay OM 844-1 51

Page 52

Appendix B—Output Terminal Functions

Table 37: Output Terminal Functions (continued)

Function

No.

'+ LI1 F terminal input signal

', LI1N

(# LI2 R terminal input signal

($ LI2N

(% PIDF

(& PIDFN

(' MOFF Undervoltage detection

(( MOFFN

() LOC Local/remote switching

(* LOCN

(+ PTC PTC thermal alarm

(, PTCN

)# PIDFB

)$ PIDFBN

)%! %(&

%(' AOFF Always OFF Always OFF %(( AON Always ON Always ON

Code Function Action

ON: The signal input to F terminal is ON

OFF: The signal input to F terminal is OFF

Disabled

Inversion of F terminal input signal

Inversion of R terminal input signal

Signal in accordance of frequency command (VIA)

Inversion of signal in accordance of frequency command (VIA)

Inversion of undervoltage detection

Inversion of local/remote switching

Inversion of PTC thermal alarm

Signal in accordance of frequency command (VIB)

Inversion of signal in accordance of frequency command (VIB)

Invalid settings, always OFF (ignored)

Inversion of LI1

ON: The signal input to R terminal is ON

OFF: The signal input to R terminal is OFF

Inversion of LI2

ON: Frequency commanded by FNOd or F207 and that by VIA show the same value.

OFF: Frequency commanded by FNOd or F207 and that by VIA show different values.

Inversion of PIDF setting

ON: Undervoltage detected

OFF: Other than undervoltage

Inversion of MOFF

ON: Local mode

OFF: Remote mode

Inversion of LOC

ON: 60% and over the protection level by PTC

OFF: Normal condition

Inversion of PTC

ON: Frequency commanded by FNOdor F207 and that by VIB show the same value.

OFF: Frequency commanded by FNOd or F207 and that by VIB show different values.

Inversion of PIDFB setting

Invalid settings, always OFF (ignored)

52 McQuay OM 844-1

Page 53

Appendix C—Receiving and Preliminary Inspection

This appendix only applies to replacing VFD drives on existing equipment.

WARNING

DAMAGED PACKAGING

If the packaging appears damaged, it can be dangerous to open it or handle it.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

WARNING

DAMAGED EQUIPMENT

Do not operate or install any drive controller that appears damaged.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

Before installing the drive controller, read pages 7–54 and follow all precautions.

Before removing the drive controller from its packaging, verify that the carton is not damaged from shipping. Damage to the carton usually indicates improper handling. If any damage is found, notify the carrier and your McQuay representative.

Storing and Shipping

If the drive controller is not immediately installed, store it in a clean, dry area where the ambient temperature is between -25 drive controller must be shipped to another location, use the original shipping material and carton to protect the drive controller.

°F and +158°F (-32°C and +70°C). If the

McQuay OM 844-1 53

Page 54

Appendix C—Receiving and Preliminary Inspection

Lifting and Handling

HANDLING AND LIFTING HAZARD

Keep the area below any equipment being lifted clear of all personnel and property. Use the lifting method illustrated in the figure below.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

WARNING

45° max.

• MD2 drive controllers up to 25 hp can be removed from their packaging and installed without a handling device.

• A hoist must be used for handling and lifting drive controllers of higher ratings.

• After removing the drive controller from its packaging, inspect it for damage. If any damage is found, notify the carrier and your sales representative.

• Verify that the drive controller nameplate and label conform to the packing slip and corresponding purchase order.

WARNING

RISK OF TOPPLING

• Do not stand the drive upright.

• Keep the drive on pallet until ready to install.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Precautions

DANGER

UNINTENDED EQUIPMENT OPERATION

Before turning on the drive controller or upon exiting the configuration menus, ensure that the inputs assigned to the Run command are in a state that will not cause the drive controller to run. Otherwise, the motor can start immediately

Failure to follow this instruction will result in death or serious injury.

CAUTION

INCOMPATIBLE LINE VOLTAGE

Before turning on and configuring the drive controller, ensure that the line voltage is compatible with the line voltage range specified on the drive controller nameplate. line voltage is not compatible.

Failure to follow this instruction can result in injury or equipment damage.

54 McQuay OM 844-1

The drive controller can be damaged if the

Page 55

Appendix C—Receiving and Preliminary Inspection

The symbols used in Table 38 are as follows:

• W: Width

• H: Height

• D: Depth

• W1: Mounting dimension (horizontal)

• H1: Mounting dimension (vertical)

• H2: Height of EMC plate mounting area

Table 38: Outside Dimensions and Weight

Voltage

class

3-phase 230 V

3-phase 460 V

Applicable

motor

7.5

100

Dimensions in. (mm)

WHDW1H1H2

(105)

5.5

(140)

(180)

9.6

(245)

9.4

(240)

12.5

(320)

(105)

5.5

(140)

(180)

9.6

(245)

9.4

(240)

9.4

(240)

12.5

(320)

5.6

(143)

7.2

(184)

9.1

(232)

(329.5)

16.5

(420)

24.8

(630)

5.6

(143)

7.2

(184)

9.1

(232)

(329.5)

16.5

(420)

21.7

(550)

24.8

(630)

5.9

(150)

5.9

(150)

6.7

(170)

7.5

(190)

8.4

(214)

11.4

(290)

5.9

(150)

5.9

(150)

6.7

(170)

7.5

(190)

8.4

(214)

11.4

(290)

11.4

(290)

3.6

(93)

4.9

(126)

6.3

(160)

8.8

(225)

8.1

(206)

(280)

3.6

(93)

4.9

(126)

6.3

(160)

8.8

(225)

8.1

(206)

8.1

(206)

11.0

(280)

4.7

(121.5)2(50)

6.1

(157)

8.2

(210)

11.6

(295)

15.8

(403)

23.8

(604.5)

4.7

(121.5)2(50)

6.1

(157)

8.2

(210)

11.6

(295)

15.8

(403)

20.8

(529)

23.8

(604.5)

1.8

(48)

2.95 (75)

4.8

(122)

4.7

(118)

1.8

(48)

2.95 (75)

4.8

(122)

5.29

(113)

4.7

(118)

Refer to

drawing:

Approx.

weight lb

(kg)

4.0

(1.8)

6.7

(3.1)

13.5 (6.1)

25.4

(11.5)

60.6

(27.4)

85.3

(38.7)

4.4

(2.0)

7.4

(3.4)

14.3 (6.5)

25.75 (11.7)

51.81 (23.5)

58.3

(26.4)

87.5

(39.7)

McQuay OM 844-1 55

Page 56

Appendix C—Receiving and Preliminary Inspection

NOTE: In the following figures, dimensions common to all drive controllers are shown with numeric values, not with symbols. The model shown in Drawing A is fixed at two points: in the upper left and lower right corners.

Drawing A

Ø0.2 (

(Installation dimension)

3.7 (93)

5.1 (130)

4.8 (121.5)

(Installation dimension)

0.51

R 0.1 (2.5)

5.9 (150)

(13)

3.7 (95)

4-M4

2.5 (64.5)

2.0 (50)

EMC plate

Drawing B

2-Ø1.0 (25)

5.0 (126)

(Installation dimension)

5.5 (140)

2.6

(65)

6.7 (170)

6.2 (157)

(Installation dimension)

0.6

(14)

2-R 0.1 (2.5)

5.9 (150)

3.7 (95)

4-M4

2.4 (62)

1.9 (48)

EMC plate

56 McQuay OM 844-1

Page 57

Drawing C

7.1 (180)

7.0 (178)

2-R 0.1 (2.5)

6.3 (160)

(Installation dimension)

8.7 (220)

6.7 (170)

3.4 (87)

3.0 (75)

0.5

(12)

8.3 (210)

(Installation dimension)

0.2

(5)

R 0.1 (2.5)

0.3

(8)

4-M4

EMC plate

0.5 (13)

9.6 (245)

7.8 (198)

8.9 (225)

(Installation dimension)

7.5 (190)

12.2 (310)

0.8 (19.5)

11.6 (295)

(Installation dimension)

0.3

(7)

0.6 (14)

R 0.1 (3)

0.4

(9)

3.7 (94.5)

3.0 (75)

4-M4

EMC plate

2-R 0.1 (3)

Appendix C—Receiving and Preliminary Inspection

0.5 (13)

R 0.1 (2.5)

(8)

0.3

(5)

0.2

8.3 (210)

8.7 (220)

(Installation dimension)

6.3 (160)

(Installation dimension)

7.1 (180)

0.5

2-R 0.1 (2.5)

6.7 (170)

EMC plate

(12)

7.0 (178)

4-M4

3.0 (75)

3.4 (87)

Drawing D

0.6 (14)

R 0.1 (3)

(9)

0.4

(7)

0.3

11.6 (295)

12.2 (310)

(Installation dimension)

McQuay OM 844-1 57

8.9 (225)

(Installation dimension)

9.6 (245)

0.8 (19.5)

2-R 0.1 (3)

7.5 (190)

EMC plate

7.8 (198)

4-M4

3.0 (75)

3.7 (94.5)

Page 58

Appendix C—Receiving and Preliminary Inspection

9.4 (240)

0.1 (3)

8 (206)

(Installation dimension)

8.4 (214)

17 (420)

16 (403)

(Installation dimension)

0.6 (15)

R 0.1 (3)

0.5

(12)

2-R 0.1 (3)

0.6(16)

12.6 (320)

0.1 (3)

11 (280)

(Installation dimension)

11.4 (290)

24.8 (630)

23.8 (604.5)

(Installation dimension)

0.6 (15)

R 0.1 (3)

0.5

(12)

2-R 0.1 (3)

0.6 (16)

Drawing E

0.6 (15)

8 (206)

(Installation dimension)

0.1 (3)

9.4 (240)

R 0.1 (3)

0.5

(12)

16 (403)

17 (420)

(Installation dimension)

0.1 (3)

2-R 0.1 (3)

0.6(16)

8.4 (214)

Drawing F

0.6 (15)

R 0.1 (3)

0.5

(12)

0.1 (3)

11 (280)

(Installation dimension)

12.6 (320)

24.8 (630)

23.8 (604.5)

(Installation dimension)

2-R 0.1 (3)

0.1 (3)

0.6 (16)

58 McQuay OM 844-1

11.4 (290)

Page 59

Drawing G

Appendix C—Receiving and Preliminary Inspection

McQuay OM 844-1 59

Page 60

Appendix D—Wiring Recommendations

No field wiring is required except in the following instances:

Controls by others - McQuay provides examples of typical control wiring (see Appendix E—Wiring Diagrams and Parameter Settings), but control wiring ultimately is the customer’s responsibility. All power wiring is factory installed and must not be changed.

Replacing a drive in an existing unit - Any replacement VFD must be wired exactly as the original VFD. This applies to power and control wiring. Carefully examine the original wiring and the wiring schematic before removing the original VFD.

Field Control Wiring and General Background for Reconnecting Wiring to a Replacement VFD

Good wiring practice requires the separation of control wiring from all power (line) wiring. In addition, power wiring to the motor must have the maximum possible separation from all other power wiring, whether from the same drive controller or other drive controllers. Do not run power and control wiring, or multiple power wiring, in the same conduit. This separation reduces the possibility of coupling electrical transients from power circuits into control circuits or from motor power wiring into other power circuits.

WARNING

IMPROPER WIRING PRACTICES

• Follow the wiring practices described in this document in addition to those already required by the National Electrical Code and local electrical codes.

• The drive controller will be damaged if input line voltage is applied to the output terminals (U/T1, V/T2, W/T3).

• Check the power connections before energizing the drive controller.

• If replacing another drive controller, verify that all wiring connections to the MD2 drive controller comply with all wiring instructions in this manual.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Follow the practices below when wiring MD2 drive controllers:

• Verify that the voltage and frequency of the input supply line and the voltage, frequency, and current of the motor match the rating on the drive controller nameplate.

• Use metallic conduit for all drive controller wiring. Do not run control and power wiring in the same conduit.

• Separate the metallic conduits carrying power wiring or low-level control wiring by at least 76 mm (3 in.).

• Separate the non-metallic conduits or cable trays carrying power wiring from the metallic conduit carrying control wiring by at least 305 mm (12 in.).

60 McQuay OM 844-1

Page 61

Appendix D—Wiring Recommendations

• Whenever power and control wiring cross, the metallic conduits and non-metallic conduits or trays must cross at right angles.

• Equip all inductive circuits near the drive (such as relays, contactors, and solenoid valves) with noise suppressors, or connect them to a separate circuit.

Branch Circuit Protection and General Background for Reconnecting a Replacement VFD

McQuay factory installed all necessary branch circuit protection and grounding wires for the original VFD and fan motor. No further wiring is required except for field control wiring on “controls by others” (see page 60) applications.

Factory branch circuit protection, ground wiring, or any factory wiring, must not be changed.

The motor size must not be changed and any replacement motor nameplate amps must not exceed the original motor nameplate amps.

Refer to NEC Article 430 for sizing of branch circuit conductors. Ensure that all branch circuit components and equipment (such as transformers, feeder cables, disconnect devices, and protective devices) are rated for the input current of the MD2 drive controller, or for the rated output current, whichever value is larger. Rated input and output current values are shown on the drive controller nameplate.

NOTE: Ensure that the branch circuit feeder protection rating is not less than the rated output current of the drive controller.

WARNING

INADEQUATE OVERCURRENT PROTECTION

• Overcurrent protective devices must be properly coordinated.

• The National Electrical Code and the Canadian Electricity Code require branch circuit protection. Use the fuses recommended on the drive controller nameplate to achieve published fault withstand current ratings.

• Do not connect the drive controller to a power feeder whose short circuit capacity exceeds the drive controller withstand fault rating listed on the drive controller nameplate.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Grounding

For safe, dependable operation, ground the drive controller according to the National Electrical Code and all local codes.

• To comply with current regulations concerning high leakage currents (above

3.5 mA), use at least a 10 mm² (6 AWG) protective conductor, or two protective conductors with the same cross-section as the power section AC supply conductors.

• Verify that resistance to ground is one ohm or less. Improper grounding causes intermittent and unreliable operation.

McQuay OM 844-1 61

Page 62

Appendix D—Wiring Recommendations

HAZARDOUS VOLTAGE

Ground the equipment using the provided ground connecting point as shown in Figure 19. The drive controller panel must be properly grounded before power is applied.

Failure to follow this instruction will result in death or serious injury.

Make certain McQuay factory installed grounding is maintained (see “Proper Grounding” in Figure 19). Do not loop the ground cables or connect them in series (see “Improper Grounding” in Figure 19).

Figure 19: Grounding Multiple Drive Controllers

DANGER

Proper

Grounding

YES

Drive Controller

Improper

Grounding

Drive Controller

208 - 230 Volt, 7.5 - 10 HP VFDs

208 - 230 V, 7.5 -10 HP VFD nameplate amps may be rated 1 amp less than the motor nameplate amps. Amp disparity between VFD and motor nameplates is normal for this application.

62 McQuay OM 844-1

Page 63

Appendix D—Wiring Recommendations

Power Terminals

To access the power terminals, open the cover using one of the methods illustrated in Figure 20.

Figure 20: Power Terminal Access

Example MD2, 2 hp

Table 39: Power Terminal Functions

Terminals Function

Ground terminal

Example MD2, 30 hp

R/L1 S/L2 T/L3

U/T1 V/T2 W/T3

PO DC bus (+) polarity (do not use)

PA/+ DC bus (+) polarity

PB DC bus connection (do not use)

PC/- DC bus (–) polarity

NOTE: The PA/+, and PC/- terminals can only be used to measure the DC bus voltage. Do not remove the jumper between PA/+ and PO.

Power supply

Outputs to the motor

McQuay OM 844-1 63

Page 64

Appendix D—Wiring Recommendations

Table 40: Power Terminal Characteristics

Voltage hp

230 V

460 V

MD2H Maximum Wire Size Tightening Torque

mm² AWG Nm (lb-in)

1–3 6 10 1.3 (10.7)

4 6 10 1.3 (10.7)

5 6 10 1.3 (10.7)

7.5 16 6 2.5 (22.3)

10 16 6 2.5 (22.3)

15 25 3 4.5 (40.1)

20 25 3 4.5 (40.1)

25 25 3 2.5 (22.3)

30 50 1/0 12 (106.2)

40 150 300 kcmil 41 (362.9)

1–7.5 6 10 1.3 (10.7)

10 16 6 2.5 (22.3)

15 16 6 2.5 (22.3)

20 25 3 4.5 (40.1)

25 25 3 4.5 (40.1)

30 50 1/0 12 (106.2)

40 50 1/0 12 (106.2)

50 50 1/0 12 (106.2)

60 50 1/0 12 (106.2)

75–100 150 300 kcmil 41 (360)

64 McQuay OM 844-1

Page 65

Appendix E—Wiring Diagrams and Parameter Settings

Table 42, Table 43, and Table 44 indicate McQuay factory settings that deviate from VFD defaults or are parameters that normally require field adjustment. Adjusting other parameters is not recommended.

WARNING

UNINTENDED EQUIPMENT OPERATION

• Any parameter values altered from the VFD control panel will affect the operation of the drive.

• If parameter “ parameters will be transferred into the VFD memory and may affect safe operation of the equipment.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

tYp” is selected and changed, altered

LL (Lower Limit Frequency)

If the VFD is placed into LOCAL control mode, local or remote keypad can alter the Lower Limit Frequency to a value above the 20.0 Hz setting as determined by parameter LL (McQuay Factory Value = 20.0 Hz). The altered value can be placed into Memory.

MODE KEY (LOCAL or REMOTE Keypad)

If the MODE key is pressed once or twice, the keypad panel display will not positively indicate the frequency output that the motor is running at, or not running. The redcolored RUN LED light indicates that the drive is in a mode enabled to run. Pressing the mode key a third time will restore the digital display to the frequency output monitoring condition. Only then will the motor run speed be indicated.

Always assume that the drive is operating, even when a motor run speed is not displayed.

WARNING

UNINTENDED EQUIPMENT OPERATION

• The fan and VFD may be operating even though motor run speed is not displayed.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

McQuay OM 844-1 65

Page 66

Appendix E—Wiring Diagrams and Parameter Settings

MPS Rooftop with MicroTech II Controls for SAF and EAF Applications

Figure 21: VFD Control Wiring and Switch Settings

SW4

SOURCE

PLC

SINK

SW4

F R RES FM

PLC

P24 CC

VFD Enable Relay (MPS control panel)

FLA FLB FLC RY RC

FM VIA

VIV

SW2 SW3

PP VIA VIB CC

Common from Unit Controlle

Analog Signal

(from Unit Controller)

NOTE: Contacts and wire terminations are in the unit control panel.

Switch Settings:

SW 4: Source (up)

FM: Voltage (up)

VIA: Voltage (up)

Parameter Settings:

The MD2 VFD has been made to McQuay specifications. All factory installed MD2 VFDs with MicroTech II controls are also factory configured and started. Table 42 lists the parameters that have been specifically configured for McQuay or else may need owner adjustment as described in this manual.

• “VFD Default” settings are the vendor defaults (see page 70 for more information)

• “McQuay Settings” are the recommended settings for McQuay units.

• No other parameters should be needed or adjusted.

66 McQuay OM 844-1

Page 67

Appendix E—Wiring Diagrams and Parameter Settings

WARNING

UNINTENDED EQUIPMENT OPERATION

• Modifying or changing parameters whose function is not described in this manual will affect drive controller operation. Some register changes will take effect as soon as they are entered.

• Do not modify or change parameters whose function is not described in this instruction bulletin.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

Table 41: Parameter Settings

Parameter Description

AU1 Automatic acceleration/deceleration 1 1

AU4 Automatic function setting 1 0

FMOd Frequency setting mode selection 1 1 1

tYP Default setting Last Entry 0

FM Meter adjustment 318 0

Fr Forward/reverse run selection (Operation panel) 0 0

ACC Acceleration time 1 60 10

DEC Deceleration time 1 60 10

FH Maximum frequency 60 50

UL Upper limit frequency 60 50

LL Lower limit frequency 15 0

J7 Base frequency 1 Fan Motor 50 J7J Base frequency voltage 1 Fan Motor Fan Motor

Pt V/F control mode selection 1 1 1

J> Torque boost 1 5 5

tHr Motor electronic-thermal protection level 1 Fan Motor Fan Motor

OLM Electric-thermal protection characteristic selection 1 0

F109 Analog/contact input function selection (VIA/VIB) 0 0

F110 Always-active function selection 1 1

F111 Input terminal selection1 (F) 56 2

F112 Input terminal selection 2 (R) 6 6

F113 Input terminal selection 3 (RES) 10 10

F118 Input terminal selection 8 (VIA) 7 7

F130 Output terminal selection 1A (RY-RC) 4 4

F270 Jump frequency 1 0 0

F271 Jump width 1 0 0

F272 Jump frequency 2 0 0

F273 Jump width 2 0 0

F274 Jump frequency 3 0 0

F275 Jump width 3 0 0

F300 PWM carrier frequency 6 Fan Motor

F303 Retry selection (number of times) 5 3

F312 Random mode 1 0

McQuay Setting

VFD Default

McQuay OM 844-1 67

Page 68

Appendix E—Wiring Diagrams and Parameter Settings

Table 41: Parameter Settings

Parameter Description

McQuay Setting

VFD Default

F602 Inverter trip retention selection 0 0

F605 Output phase failure detection mode selection 3 4

F608 Input phase failure detection mode selection 1 1

F626 Over-voltage stall protection level 140 140

F627 Under-voltage trip/alarm selection 0 0

F632 Thermal memory selection 1 0

F710 Standard monitor display selection 0 0

F880 Rooftop or self-contained application 107 0

NOTE: Fan Motor = Varies with the fan motor.

68 McQuay OM 844-1

Page 69

Appendix E—Wiring Diagrams and Parameter Settings

Rooftop and Self-Contained with MicroTech II Controls for SAF, RAF, and EAF Applications

Figure 22: VFD Control Wiring and Switch Settings

SW4

PLC

SOURCE

P24 CC

PLC

SINK

SW4

F R RES FM

FLA FLB FLC RY RC

FM VIA

VIV

SW2 SW3

Factory Wiring to Terminal Strip in Main Control Box

Bypass Contact

Decrease

Run

Enable

Contact

NOTE: Contacts and wire terminations are in the unit control panel.

Speed

Contact

Increase

Speed

Contact

Speed

Feedback

Signal

PP VIA VIB CC

Common to

Unit Controller

Switch Settings:

SW 4: Source (up)

FM: Voltage (up)

VIA: Voltage (up)

Parameter Settings:

• “VFD Default” settings are the vendor defaults (see page 70 for more information)

• “McQuay Settings” are the recommended settings for McQuay units that control

the speed of an energy recovery wheel.

• No other parameters should be needed or adjusted.

McQuay OM 844-1 69

Page 70

Appendix E—Wiring Diagrams and Parameter Settings

UNINTENDED EQUIPMENT OPERATION

• Modifying or changing parameters whose function is not described in this manual will affect drive controller operation. Some register changes will take effect as soon as they are entered.

• Do not modify or change parameters whose function is not described in this instruction bulletin.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

Table 42: Parameter Settings

WARNING

Parameter Description

AU1 Automatic acceleration/deceleration 1 1

AU4 Automatic function setting 1 0

FMOd Frequency setting mode selection 1 5 1

tYP Default setting Last Entry 0

FM Meter adjustment 318 0

Fr Forward/reverse run selection (Operation panel) 0 0

ACC Acceleration time 1 60 10

DEC Deceleration time 1 60 10

FH Maximum frequency 60 50

UL Upper limit frequency 60 50

LL Lower limit frequency 15 0

J7 Base frequency 1 Fan Motor 50 J7J Base frequency voltage 1 Fan Motor Fan Motor

Pt V/F control mode selection 1 1 1

J> Torque boost 1 5 5

tHr Motor electronic-thermal protection level 1 Fan Motor Fan Motor

OLM Electric-thermal protection characteristic selection 1 0

F109 Analog/contact input function selection (VIA/VIB) 2 0

F110 Always-active function selection 0 1

F111 Input terminal selection1 (F) 56 2

F112 Input terminal selection 2 (R) 41 6

F113 Input terminal selection 3 (RES) 42 10

F118 Input terminal selection 8 (VIA) 43 7

F130 Output terminal selection 1A (RY-RC) 14 4

F132 Output terminal selection 5 11

F268 Initial up/down frequency 15 0

F269 Change of initial up/down frequency 0 1

F270 Jump frequency 1 0 0

F271 Jump width 1 0 0

F272 Jump frequency 2 0 0

F273 Jump width 2 0 0

F274 Jump frequency 3 0 0

F275 Jump width 3 0 0

McQuay Setting

VFD Default

70 McQuay OM 844-1

Page 71

Table 42: Parameter Settings

Appendix E—Wiring Diagrams and Parameter Settings

Parameter Description

McQuay Setting

VFD Default

F300 PWM carrier frequency 6 Fan Motor

F303 Retry selection (number of times) 5 3

F312 Random mode 1 0

F602 Inverter trip retention selection 0 0

F605 Output phase failure detection mode selection 4 4

F608 Input phase failure detection mode selection 1 1

F626 Over-voltage stall protection level 140 140

F627 Under-voltage trip/alarm selection 0 0

F632 Thermal memory selection 1 0

F710 Standard monitor display selection 0 0

F880 Rooftop or self-contained application 108 0

NOTE: Fan Motor = Varies with the fan motor.

McQuay OM 844-1 71

Page 72

Appendix E—Wiring Diagrams and Parameter Settings

Rooftop Controls by Others for SAF, RAF, and EAF Applications

The MD2 has been made to McQuay’s specifications. However, McQuay assumes no responsibility for field installed controls. Commonly used control connections and switch positions are shown in Figure 23. Table 43 lists parameters settings that are often used with analog control or often require field adjustment. The user or installer should consult the OEM vendor’s operation and maintenance manual for more details at www.us.schneider-electric.com.

Figure 23: VFD Control Wiring and Switch Settings

SW4

SOURCE

PLC

SINK

SW4

F R RES FM

PLC

P24 CC

FLA FLB FLC RY RC

FM VIA

VIV

SW2 SW3

PP VIA VIB CC

Run

Field Wiring

Factory Wiring to Terminal Strip

in Main Control Box (use shielded cable and common drain in main control box)

Fault

(change the connection from

VIAtoVIBfor4-20mAcontrol)

Switch Settings:

SW 4: Source (up)

FM: Voltage (0 - 10 = up)

VIA: Voltage (0 (adjustable) - 20 = down)

Common to

Unit Controller

0 - 10 Vdc Control

72 McQuay OM 844-1

Page 73

Parameter Settings:

Table 43: Parameter Settings

Appendix E—Wiring Diagrams and Parameter Settings

Parameter Description

AU1 Automatic acceleration/deceleration 1 1

AU4 Automatic function setting 1 0

FMOd Frequency setting mode selection 1 1 1

tYP Default setting Last Entry 0

FM Meter adjustment 318 0

Fr Forward/reverse run selection (Operation panel) 0 0

ACC Acceleration time 1 60 10

DEC Deceleration time 1 60 10

FH Maximum frequency 60 50

UL Upper limit frequency 60 50

LL Lower limit frequency 15 0

J7 Base frequency 1 Fan Motor 50 J7J Base frequency voltage 1 Fan Motor Fan Motor

Pt V/F control mode selection 1 1 1

J> Torque boost 1 5 5

tHr Motor electronic-thermal protection level 1 Fan Motor Fan Motor

OLM Electric-thermal protection characteristic selection 1 0

F109 Analog/contact input function selection (VIA/VIB) 0 0

F110 Always-active function selection 0 1

F111 Input terminal selection1 (F) 2 2

F112 Input terminal selection 2 (R) 1 6

F113 Input terminal selection 3 (RES) 10 10

F118 Input terminal selection 8 (VIA) 7 7

F130 Output terminal selection 1A (RY-RC) 4 4

F270 Jump frequency 1 0 0

F271 Jump width 1 0 0

F272 Jump frequency 2 0 0

F273 Jump width 2 0 0

F274 Jump frequency 3 0 0

F275 Jump width 3 0 0

F300 PWM carrier frequency 6 Fan Motor

F303 Retry selection (number of times) 5 3

F312 Random mode 1 0

F602 Inverter trip retention selection 0 0

F605 Output phase failure detection mode selection 4 4

F608 Input phase failure detection mode selection 1 1

F626 Over-voltage stall protection level 140 140

F627 Under-voltage trip/alarm selection 0 0

F632 Thermal memory selection 1 0

F710 Standard monitor display selection 0 0

F880 Rooftop or self-contained application 110 0

Suggested McQuay Setting*

VFD Default

* Unit ships with VFD default parameter settings. NOTE: Fan Motor = Varies with the fan motor.

McQuay OM 844-1 73

Page 74

Appendix E—Wiring Diagrams and Parameter Settings

Rooftop Energy Recovery Wheel Speed Control

Figure 24: VFD Control Wiring and Switch Settings

SW4

SOURCE

PLC

SINK

SW4

F R RES FM

PLC

P24 CC

FLA FLB FLC RY RC

FM VIA

VIV

SW2 SW3

Factory Wiring to Terminal Strip in Main Control Box

Bypass Contact

Run

Enable

Contact

Decrease

Speed

Contact

Increase

Speed

Contact

Speed

Feedback

Signal

PP VIA VIB CC

Common to

Unit Controller

Switch Settings:

SW 4: Source (up)

FM: Voltage (up)

VIA: Voltage (down)

Parameter Settings:

The MD2 VFD has been made to McQuay specifications. All factory installed MD2 VFDs that control the speed of an energy recovery wheel are also factory configured and started. Table 44 lists the parameters that have been specifically configured for McQuay or else may need owner adjustment as described in this manual.

• “VFD Default” settings are the vendor defaults (see page 75 for more information)

• “McQuay Settings” are the recommended settings for McQuay units that control

the speed of an energy recovery wheel.

• No other parameters should be needed or adjusted.

74 McQuay OM 844-1

Page 75

Appendix E—Wiring Diagrams and Parameter Settings

WARNING

UNINTENDED EQUIPMENT OPERATION

• Modifying or changing parameters whose function is not described in this manual will affect drive controller operation. Some register changes will take effect as soon as they are entered.

• Do not modify or change parameters whose function is not described in this instruction bulletin.

Failure to follow this instruction can result in death, serious injury, or equipment damage.

Table 44: Parameter Settings

Parameter Description

AU1 Automatic acceleration/deceleration 0 1

AU4 Automatic function setting 1 0

FMOd Frequency setting mode selection 1 5 1

tYP Default setting Last Entry 0

FM Meter adjustment 318 0

Fr Forward/reverse run selection (Operation panel) 0 0

ACC Acceleration time 1 90 10

DEC Deceleration time 1 90 10

FH Maximum frequency 60 50

UL Upper limit frequency 60 50

LL Lower limit frequency 5 0

J7 Base frequency 1 Fan Motor 50 J7J Base frequency voltage 1 Fan Motor Fan Motor

Pt V/F control mode selection 1 1 1

J> Torque boost 1 5 5

tHr Motor electronic-thermal protection level 1 Fan Motor Fan Motor

OLM Electric-thermal protection characteristic selection 2 0

F109 Analog/contact input function selection (VIA/VIB) 2 0

F110 Always-active function selection 0 1

F111 Input terminal selection1 (F) 56 2

F112 Input terminal selection 2 (R) 41 6

F113 Input terminal selection 3 (RES) 42 10

F118 Input terminal selection 8 (VIA) 43 7

F130 Output terminal selection 1A (RY-RC) 14 4

F132 Output terminal selection 5 11

F268 Initial up/down frequency 15 0

F269 Change of initial up/down frequency 0 1

F270 Jump frequency 1 0 0

F271 Jump width 1 0 0

F272 Jump frequency 2 0 0

F273 Jump width 2 0 0

F274 Jump frequency 3 0 0

McQuay Setting

VFD Default

McQuay OM 844-1 75

Page 76

Appendix E—Wiring Diagrams and Parameter Settings

Table 44: Parameter Settings

Parameter Description

McQuay Setting

VFD Default

F275 Jump width 3 0 0

F300 PWM carrier frequency 6 Fan Motor

F303 Retry selection (number of times) 5 3

F312 Random mode 1 0

F602 Inverter trip retention selection 0 0

F605 Output phase failure detection mode selection 4 4

F608 Input phase failure detection mode selection 1 1

F626 Over-voltage stall protection level 140 140

F627 Under-voltage trip/alarm selection 0 0

F632 Thermal memory selection 1 0

F710 Standard monitor display selection 0 0

F880 Rooftop or self-contained application 111 0

NOTE: Fan Motor = Varies with the fan motor.

76 McQuay OM 844-1

Page 77

Appendix E—Wiring Diagrams and Parameter Settings

Figure 25: Typical VFD Control Wiring

/2.68

T2_115VAC

203E

+PP

PL7

/3.11 /3.11

T3_24V T3_COM

303A

SRC

207

SOURCE 9-16

9-169-169-169-169-16

WIRED INTERNAL

TO MOTHERBOARD

TB2 TB2

MJ45

45 42

MCB

207

SUPPLYFAN

MCB

207

RETURN FAN

MCB

207

MCB

207

MCB

207

MCB

207

MCB

207

+BB

MMP30

133

+PP

7675

PL7

+PP PL8

+BB

MMP40

145

+PP

PL8

7675

SIG_1/6.01

BO1

1NO1

BO2

2NO2

BO13

13NO13

BO14

14NO14

BO15

15NO15

BO16

16NO16

BO11

11NO11

jprs

24V SRC

jprs

24V SRC

jprs

24V SRC

jprs

24V SRC

jprs

24V SRC

jprs

24V SRC

jprs

24V SRC

SUPPLY

AIR

RETURN

AIR

R67

+PP

PL18

R68

R46_47

R48_49

H1C

+BB M30I

+BB

M30B

+BB M40I

+BB

M40B

H425-2

A2A1

H429-11

A2A1

R25

604

H1DN

H1UP

H1DN

H1UP

+PP

PL18

(INVERTER)

1NC

(OFF)

1NO

(BYPASS)

427A

R67

401

(INVERTER)

2NC

(OFF)

2NO

(BYPASS)

431A

R68

404

+GB R20

+PP

PL7

H425-12

+PP

PL7

427B

H427-9

R69

+PP

PL8

+PP

PL8

H429-10

H431-7

303B

/1.68

T1_N

168C

+PP

PL7

+PP

PL8

+NB

FLA FLC FLA FLC

H443A

H443-7

+PP

PL7

+BB

443A

H443-14

+PP

PL7

AFD10

SAF

SQD21

NCVIA

R67M30I

445A 443C

461413

401425

R46_47

405

H443-4

PL7

+PP

137

261

RESP24NC

H443C

H2DNH2VH2UP

H443-1

PL7

443D

+PP

PL8

443E

+BB M40I

H443-12

H443-15

1413

+PP

PL8

445C 443G

DECRINCR

+NB

AFD20

PL8

RESP24NC

+PP

149

264

H443-2

PL8

+PP

RAF

SQD21

VIARF

H443-5

R68

404430

R48_49

409

443H

H2DNH2VH2UP

DECRINCR

McQuay OM 844-1 77

Page 78

Appendix E—Wiring Diagrams and Parameter Settings

Figure 26: Typical VFD Power Wiring

PB11

L1-3

L2-3

L3-3

108

137

138

139

CB10

L1L1

L2L2

L3L3

H137

H138

H139

GND10

133A 137A

134A 138A

135A 139A

H140

+BB

MMP30

L1A

L1B

L2A

L2B

L3A

L3B

426

T1A

T1B

T2A

T2B

T3A

T3B

+NB

AFD10

GND

440

+BB

M30B

427

+BB M30I

425

HSAF-1

HSAF-2

HSAF-3

SUPPLY-FAN

+NB

MTR

PB11

L1-5

L2-5

L3-5

108

+BB

MMP40

L1A

L1B

L2A

L2B

L3A

L3B

426

149

150

151

CB20

L1L1

L2L2

L3L3

H149

H150

H151

GND20

145A 149B

146A 150B

147A 151B

H152

T1A

T1B

T2A

T2B

T3A

T3B

+NB

AFD20

UTI

VT2

GND

WT3

440

+BB

M40B

432

+BB M40I

430

HRAF-1

HRAF-2

HRAF-3

RETURN-FAN

+NB

MTR

78 McQuay OM 844-1

Page 79

Page 80

McQuay Training and Development

Now that you have made an investment in modern, efficient McQuay equipment, its care should be a high priority. For training information on all McQuay HVAC products, please visit us at www.mcquay.com and click on training, or call 540-248-9646 and ask for the Training Department.

Warranty

All McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your local McQuay Representative, go to www.mcquay.com.

This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.mcquay.com.

McQuay MPS 030 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Applications With MicroTech II Control (A1a, A2, B1a, B2, C, and D)

Applications Without MicroTech II Controls (A1b and B1b)

Replacement VFD

Hazard Categories and Special Symbols

Before You Begin

Bus Voltage Measurement Procedure

Initial Start-Up

Control Terminals

Switch Settings and Terminal Designations

Integrated Display Terminal

Programming

Mode Access

Parameter Groups

Access to Menus and Parameters

AUF Quick Menu

AUF Quick Menu Parameters

Setting the Macro Function

Setting the Mode of Operation

Command Mode Selection

Frequency Mode Selection

Default Setting

Forward/Reverse Run Selection

Maximum Frequency

High Speed and Low Speed

Nominal Motor Frequency and Voltage Settings

V/Hz Control Mode Selection

Voltage Boost (Energy Recovery Application Only)

Electronic Motor Overload Protection

Input Signal Selection

Terminal Function Selection

Jump Frequency (Jumping Resonant Frequencies)

Switching Frequency

Auto Restart

Drive Controller Fault Retention

Output Phase Loss Detection

Input Phase Loss Detection

Avoiding Overvoltage Tripping

Undervoltage Fault

Changing the Display Parameter

Troubleshooting Fault and Alarm Codes

Resetting the Drive Controller After a Fault Condition

Storing and Shipping

Lifting and Handling

Precautions

Power Terminals

LL (Lower Limit Frequency)

MODE KEY (LOCAL or REMOTE Keypad)

MPS Rooftop with MicroTech II Controls for SAF and EAF Applications

Rooftop and Self-Contained with MicroTech II Controls for SAF, RAF, and EAF Applications

Rooftop Controls by Others for SAF, RAF, and EAF Applications

Rooftop Energy Recovery Wheel Speed Control