Nidec Control Techniques HVAC Drive H300 HMI... User manual

HMI Bypass
Controller
HVAC Drive H300
Installation and
Commissioning Guide
Part Number: PSD-H300HMIBP-ICG
Issue: 2.0

2 HMI Bypass Controller Installation and Commissioning Guide
Contents
Section 1 - Introduction ........................................................................................5
Section 2 - Installation Instructions .....................................................................6
2.1 Receiving ......................................................................................................6
2.2 Nameplate Information ................................................................................6
2.2.1 Labels ...................................................................................................6
2.2.1.1 HMI Bypass Package Label............................................................6
2.2.1.2 Typical Standard VFD Rating Label ...............................................7
2.3 Part Number Identication ............................................................................8
2.4 Mounting & Clearances .................................................................................9
2.5 Wiring and Precautions ..............................................................................10
2.5.1 General ..............................................................................................10
2.5.2 Input Wiring .......................................................................................10
2.5.3 Output Wiring ....................................................................................11
2.5.4 Control Circuit Wiring .........................................................................12
2.5.4.1 Analog Input ..............................................................................12
2.5.4.2 Digital Inputs .............................................................................12
2.5.4.3 Relay Outputs ............................................................................12
2.5.4.4 Digital Output............................................................................13
2.5.4.5 Additional HVAC H300 VFD Connections....................................13
2.5.4.6 Additional SI-I/O Connections ....................................................13
2.5.5 Grounding .........................................................................................14
2.5.6 Customer Connection Terminals.........................................................14
2.5.6.1 Emergency Bypass Operation.....................................................14
2.5.7 Customer Connection Diagram ..........................................................15
2.5.8 HVAC Drive H300 HMI Bypass Schematic ............................................16
2.6 Inspection ..................................................................................................18
Section 3 – Overview of the HMI bypass ..........................................................18
3.1 HMI Bypass Touchscreen Functions .............................................................18
3.1.1 Splash Screen......................................................................................18
3.1.2 Main Control Screen ...........................................................................19
3.1.3 Drive Status and System Diagnostics...................................................20
3.1.3.1 General Status............................................................................20
3.1.3.2 Additional Drive Status ....................................................................21
3.1.3.3 Trip Log............................................................................................21
3.1.3.4 Graphical Trend Viewer ..............................................................22
3.1.3.5 I/O Status ...................................................................................23
3.2 System Settings...........................................................................................23
3.2.1 Motor Map..........................................................................................24
3.2.3 Advanced VFD Settings.......................................................................26
3.2.4 Skip Frequencies.................................................................................27
3.2.5 Motor Ramp/Limits.............................................................................27
3.2.6 I/O Settings.........................................................................................28

HMI Bypass Controller Installation and Commissioning Guide 3
3.2.7 Auto-Reset Setup................................................................................28
3.2.8 Remote Control ..................................................................................29
3.2.10 Modbus RTU Conguration...............................................................30
3.2.10.1 Serial Data Format....................................................................31
3.2.11 Alarm Response................................................................................31
3.2.12 Alarm Response - Fireman’s Override................................................32
3.2.13 Advanced I/O Settings ......................................................................32
3.2.14 PID Setup..........................................................................................33
3.2.14.1 PID Setup - Sleep/Wake Function..............................................33
3.2.15 Miscellaneous ...................................................................................34
3.3 Touchscreen HMI Settings ...........................................................................34
3.3.1 Setting the Date and Time ..................................................................35
3.4 Touchscreen LCD HMI Software Update Procedure......................................36
Section 4 – Startup...............................................................................................37
4.1 Setup Wizard Process ..................................................................................38
4.2 Setup Wizard - Step-by-Step Instructions ....................................................38
4.3 Checking Motor Rotation ............................................................................42
4.3.1 Check #1: Rotation on VFD power .....................................................42
4.3.2 Check #2: Rotation on Bypass power ..................................................42
4.4 Normal Operation .......................................................................................43
4.4.1 Current System Status ........................................................................43
4.4.2 Starting Operation .............................................................................44
4.4.3 Ending Operation ...............................................................................44
Section 5 - Troubleshooting ................................................................................45
Section 6 - Additional Information ....................................................................47
6.1 Specications - HVAC Drive H300 HMI Bypass .............................................47
6.1.1 Approvals ...........................................................................................47
6.1.2 Design ................................................................................................47
6.1.3 Operating Conditions .........................................................................47
6.1.4 Options ..............................................................................................48
6.2 Maintenance & Inspection ...........................................................................48
6.3 VFD Parameter Access.................................................................................49
6.4 VFD Replacement........................................................................................49
6.5 HVAC Drive H300 HMI Bypass Parameter Defaults.......................................50

4 HMI Bypass Controller Installation and Commissioning Guide
Safety and Precautions
1. Read this manual in its entirety before installing or operating the HMI
bypass package. This manual applies to HMI bypass packages with the
Nidec Control Techniques HVAC Drive H300 variable frequency drive.
2. Do not connect or disconnect wiring, or perform signal checks while the
power supply is turned ON.
3. The internal capacitor of the installed drive may be charged even after the
power supply has been turned OFF. To prevent electrical shock, disconnect
all power before servicing the HMI bypass. Wait at least 10 minutes
after the power supply has been disconnected and all LEDs have been
extinguished.
4. Do not perform a voltage withstand test on the HMI bypass or the
installed drive. This electronic equipment uses semiconductors and is
vulnerable to high voltage. Severe damage to the equipment may occur.
5. The HMI bypass is suitable for use on a circuit capable of delivering not
more than 100,000 RMS symmetrical Amperes, 240 volts maximum (230
Volt class units), 480 Volts maximum (460 Volt Class units), 600 Volts
maximum (575 Volt Class units).
6. Static sensitive printed circuit boards are installed in the HMI bypass
package. Damage may occur due to Electrostatic Discharge (ESD). DO NOT
handle any components without following proper ESD precautions.
Failure to observe these and other precautions highlighted in this manual
will expose the user to high voltages, resulting in equipment damage, serious
injury or death.
The information contained within this document is proprietary to Nidec
Control Techniques and may not be copied, reproduced or transmitted
to other parties without the expressed written consent of Nidec Control
Techniques.
No patent liability is assumed with respect to the use of information
contained herein. Moreover, because Nidec Control Techniques is constantly
improving its high quality products, the information contained in the manual
is subject to change without notice. Every precaution has been taken in
the preparation of the manual. Nevertheless, the manufacturer assumes no
responsibility for errors or omissions. Neither is liability assumed for damages
resulting from the use of the information contained in this publication.
WARNING

HMI Bypass Controller Installation and Commissioning Guide 5
Section 1 - Introduction
Thank you for purchasing your Nidec Control Techniques HMI bypass
package. This manual provides information concerning the installation,
wiring and general startup procedures for the HVAC Drive H300 line of HMI
bypass packages. The HMI bypass is a complete integrated HVAC control
system which employs the latest Variable Frequency Drive (VFD) technology
and incorporates a dedicated micro-processor based controller for HVAC
applications. The HMI bypass package uses a dedicated LCD touchscreen
Human Machine Interface (HMI) that clearly shows the system operating
status. The HMI bypass is designed for ease of installation and startup.
Please follow this instruction manual’s guidelines for proper installation and
programming of your HMI bypass package.
HVAC Drive H300
LCD touchscreen HMI bypass
Lower enclosure
Disconnect handle
(padlockable)

6 HMI Bypass Controller Installation and Commissioning Guide
Section 2 - Installation Instructions
2.1 Receiving
After unpacking the HMI bypass package:
3Verify that the part numbers on the package match the numbers on your
purchase order, packing slip or tagging information.
3Check the unit for physical damage which may have occurred during
shipping. If any part of the package is missing or damaged, notify the
carrier and your Nidec Control Techniques representative immediately.
3Verify that all internal hardware (i.e. components, screws, etc.) is properly
seated and fastened securely.
2.2 Nameplate Information
The HMI bypass package has two nameplates for identification. The main
label is located on the inside of the enclosure. This nameplate provides
information on the entire package. The second nameplate is located on
the VFD. This nameplate contains information related to the VFD only. The
nameplate information should be recorded and kept in a safe location. This
information is required for any service or repair.
2.2.1 Labels
2.2.1.1 HMI Bypass Package Label

HMI Bypass Controller Installation and Commissioning Guide 7
2.2.1.2 Typical Standard VFD Rating Label
* This label is only applicable to VFD size 7 and above.
Refer to the following page Section 2.3 Part Number Identification for further
information relating to the labels.

8 HMI Bypass Controller Installation and Commissioning Guide
2.3 Part Number Identification
www.hvacr-drives.com Page 21
Order from Eden Prairie, MN:
[email protected]
P: 952-995-8111, F: 952-995-8129 PLH 2018 v1.0
Order Code Configurator
HVAC/R Packaged Drives
BASE ORDER CODE POWER & DOOR OPERATOR OPTIONS CONTROL OPTIONS
P X XXXX N X X X -X 0 X X X X X 0 -XXXX0XXXXX
1 2 3 - 6 7 8 910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
[Order Code
digit number]
Packaged HVAC/R Drives from 1 to 600 hp
[27] Basin Heater**
0 = None
1 = 1 kW
2 = 2 kW
3 = 3 kW
4 = 4 kW
5 = 5 kW
6 = 6 kW
7 = 7 kW
8 = 8 kW
9 = 9 kW
A = 10 kW
B = 11 kW
C = 12 kW
D = 13 kW
E = 14 kW
F = 15 kW
G = 16 kW
H = 17 kW
I = 18 kW
J = 19 kW
K = 20 kW
[28] Spray Pump***
0 = None
1 = 1 HP
2 = 2 HP
3 = 3 HP
5 = 5 HP
7 = 7 HP
A = 10 HP
B = 15 HP
[29] De-icer / Sun Shield***
0 = None
1 = De-icer
2 = Sun Shield
3 = De-icer & Sun Shield
[30] Siemens FLN
0 = None
1 = Yes
[12] Bypass Options
0 = No Bypass
1 = Electronic 3-Contactor Bypass
2 = Manual Bypass
3 = HMI 2-Contactor Bypass
with VFD Service Swtich
4 = HMI 2-Contactor Bypass
6 = Soft Starter 3-Contactor Bypass
[14] Door-Mounted Keypad/HMI
0 = None
C = LCD Keypad
E = LED Keypad
H = Door-mounted Touchscreen HMI
E = LED Keypad
Unidrive M200 includes LED keypad as standard.
Afnity BA includes LCD keypad as standard.
[15] Input Filtering
0 = None
1 = Input Reactor 3%
2 = Input Reactor 5%
3 = RFI Filter
4 = Input Reactor 3% + RFI Filter
5 = Input Reactor 5% + RFI Filter
6 = Matrix AP Filter
Enclosure size considerations. Addition of one or
multiple ltering options may change the size
and/or style of the enclosure.
Matrix lter - consult factory.
[16] Output Filtering
0 = None
1 = Output Reactor 3%
2 = dV/dt Filter
3 = Sine Filter
4 = Output Reactor 1.5%
[17] Multiple Motors
0 = None Drive Protected
2 = Two Manual Motor Protectors (MMP)
3 = Three Manual Motor Protectors
4 = Four Manual Motor Protectors
5 = Five Manual Motor Protectors
6 = Six Manual Motor Protectors
Cumulative amp ratings of motors must not
exceed the drive rating. Each motor must have its
own overload protection. Multiple Manual Motor
Protectors are of equal size.
[18] Space Heater**
0 = None
2 = 200 W
4 = 400 W
Larger heaters can be chosen for extremely cold
ambient temperatures.
[21] - [23] Option Modules
0 = None
A = SM-APPS-LITE-V2
C = SM-BIPOLAR
D = SM-CANOPEN
E = SM-DEVICENET
H = SM-ETHERCAT
I = SM-ETHERNET
K = SM-I/O-120V
L = SM-I/O-24V
M = SM-I/O-32
N = SM-I/O-LITE
P = SM-I/O-PLUS
Q = SM-I/O-TIMER
R = SM-INTERBUS
S = SM-LON
T = SM-PROFIBUS-DP
V = SM-REGISTER
W = SI-I/O*
Y = AI-485-ADAPTOR*
Z = KI-485-ADAPTOR*
1 = SI-PROFIBUS*
2 = SI-ETHERNET*
3 = SI-DEVICENET*
4 = SI-CANOPEN*
5 = SI-PROFINET-V2*
6 = SI-ETHERCAT*
Unidrive M200 has 1 option
module slot only, Afnity has 2
option module slots, HVAC Drive
H300 has 3 option slots
[24] Phase Loss Monitor
0 = None
1 = Yes
[26] Temperature Controller***
0 = None
1 = Thermocouple
2 = RTD
[1] Package Types
G = Pre-Engineered, New Generation
P = Pre-Engineered
S = Seismic*
C = Custom*
*Contact Factory
[2] Voltage Ratings
8 = 208 Vac
2 = 230 Vac
4 = 460 Vac
5 = 575 Vac
[3] - [6] Horsepower Ratings
0001 = 1 HP 0060 = 60 HP
01P5 = 1.5 HP 0075 = 75 HP
0002 = 2 HP 0100 = 100 HP
0003 = 3 HP 0125 = 125 HP
0005 = 5 HP 0150 = 150 HP
0007 = 7.5 HP 0200 = 200 HP
0010 = 10 HP 0250 = 250 HP
0015 = 15 HP 0300 = 300 HP
0020 = 20 HP 0350 = 350 HP
0025 = 25 HP 0400 = 400 HP
0030 = 30 HP 0450 = 450 HP
0040 = 40 HP 0500 = 500 HP
0050 = 50 HP 0600 = 600 HP
[7] Duty Ratings
N = Normal Duty
[8] Enclosure Styles
1 = NEMA 1
2 = NEMA 12
3 = NEMA 3R
4 = NEMA 4X
B = NEMA 1 (Bypass Only)
F = NEMA 1 (Disconnect with Fusing)
[9] Input Power Connections
1 = Circuit Breaker (25 kAIC)
2 = Disconnect Switch with Fusing
3 = Circuit Breaker (65 kAIC)
4 = Circuit Breaker (100 kAIC)
5 = Fused Disconnect (100 kAIC)
Input fuses for drives are included as
standard for all input power options
[10] Products
A = Afnity Active Front End
B = Afnity Drive
2 = Unidrive M200
3 = HVAC Drive H300
X = HVAC Drive H300 AFE
*SI options used with Unidrive M200 & HVAC Drive H300
**Available with NEMA 3R enclosure only
***Selection of options 26-29 require a cooling tower NEMA 3R enclosure.
NOTE:
For options not included in the Order Code Congurator, please consult
factory for a custom quote.

HMI Bypass Controller Installation and Commissioning Guide 9
2.4 Mounting & Clearances
Install the HMI bypass package on a vertical surface and allow the following
minimum clearances for normal heat dissipation.
WARNING
WARNING
Potentially hazardous voltage
canexistwithin this device. Only fully trained, qualied personnel should
servicethisequipment.
Pressingthestop button will not remove power from this equipment.
Neverservicethis equipment without rst being sure all power is safely
removed.Hazardousvoltage levels may exist forup to 5 minutes after
powerisdisconnected!
WARNING
WARNING
Potentially hazardous voltage
canexistwithin this device. Only fully trained, qualied personnel should
servicethisequipment.
Pressingthestop button will not remove power from this equipment.
Neverservicethis equipment without rst being sure all power is safely
removed.Hazardousvoltage levels may exist for up to 5 minutes afte r
powerisdisconnected!
12 in
6 in 12 in 6 in
TOP SIDE-TO-SIDE
Air Flow
Notes:
• Ambient operating temperature; 32 °F to 104 °F (0 °C to 40 °C)
• Install the unit in a dry environment free from oil mist and dust
• Install the unit in a location free from radioactive materials, combustible
materials, harmful gases or liquids
• Do not install the unit in a location susceptible to excessive vibrations
• Do not install in direct sunlight
• During installation, protect the unit from foreign particles such as metal
shavings produced by drilling
• Failure to follow these notes could void the warranty

10 HMI Bypass Controller Installation and Commissioning Guide
2.5 Wiring and Precautions
2.5.1 General
1. DO NOT connect or disconnect wiring or perform signal checks while the
power supply is turned ON.
2. Connect the power supply wiring to the HMI bypass input terminals L1, L2
and L3 on the main circuit disconnect device.
3. Connect the motor wiring to the bypass output terminals T1, T2 and T3 at
the Class 20 Motor O/L or the output reactor if installed.
4. Never touch the output circuit directly or place the output line in contact
with the package enclosure.
5. DO NOT connect power factor correction capacitors on the output circuit.
6. Power supply wiring and motor wiring must be in separate conduits with
separate ground conductors. (DO NOT use conduits as ground).
7. Control wiring must be in conduit separate from both power supply and
motor wiring.
8. Tighten the screws on the main circuit disconnect (if provided) and control
circuit terminals.
9. Observe national and local codes when wiring electrical devices.
Failure to observe these precautions may result in equipment damage or
improper operation and may not be covered under warranty.
2.5.2 Input Wiring
The HMI bypass package may be supplied with several different input device
options. These input options include protective devices as well as non–
protective devices. It is the responsibility of the installing parties to ensure
that requirements for branch circuit protection of the appropriate size and
location are observed. All incoming power is connected to terminals L1, L2,
and L3. The following input options are available.
»Fused disconnect
»Circuit breaker
»Input line reactor
»Input RFI filter

HMI Bypass Controller Installation and Commissioning Guide 11
Connect the main power supply, motor and control wiring using the following
recommended conduit locations. The input phase sequence does not affect
the output phase sequence of the VFD. It will affect bypass sequence and
motor rotation direction.
control wiring
motor connection
WARNING
WARNING
Potentially hazardous voltage
canexistwithin this device. Only fully trained, qualied personnel should
servicethisequipment.
Pressingthestop button will not remove power from this equipment.
Neverservicethis equipment without rst being sure all power is safely
removed.Hazardousvoltage levels may exist for up to 5 minutes after
powerisdisconnected!
Recommended
conduit entrances
incoming suppl
y
2.5.3 Output Wiring
The HMI bypass package is always supplied with a Class 20 motor O/L on its
output. However, the unit may be supplied with several different output
options. The following output options are available.
• Single motor O/L (Terminals T1, T2, and T3)
• Dual motor O/L (Terminals (Motor 1 – T1, T2, and T3)
(Motor 2 – T4, T5, and T6))
• Output reactor
Note: All contactors and relays supplied in the HMI bypass package are
suppressed with R/C snubbers. If adding additional inductive loads (i.e.
magnetic contactors, magnetic relays, magnetic valves, solenoids, magnetic
brakes, etc.) in or near the HMI bypass package, use an appropriate surge
suppressor across the coils to limit the transients on the supply lines.

12 HMI Bypass Controller Installation and Commissioning Guide
2.5.4 Control Circuit Wiring
2.5.4.1 Analog Input
A 4 to 20 mA analog input signal is available by connecting to the customer
terminals 5 (+) and 4 (-).
Terminal No. Description
4 0V Common Analog
5 Speed/Frequency Reference
2.5.4.2 Digital Inputs
The HMI bypass combines digital inputs from the HVAC H300 VFD and SI-I/O
option module. As per the following table, the HMI bypass control provides
ten (10) digital inputs.
There are ten (10) digital inputs. (24 Vdc).
Terminal No. Description
1 (3 positions) 0V Common
22 Fireman’s Override
23 Damper Feedback
24 Fire Alarm
25 Customer Reset
27 Auto Run
29 Enable
203 Safety
204 Relay Output Select (223)
207 Remote Bypass Select
208 Remote VFD Select
Terminal 204 is used as an input signal to control terminal 223 relay output
when terminal 223 is set to “T204 24V Input”. All digital inputs are dry
contacts (voltage free).
2.5.4.3 Relay Outputs
There are two (2) form A relay outputs.
Terminal No. Description
221 System Fault
222 0V Common for dry contacts 221 & 223
223 System On or 204 24V Input
When Relay Output Select is set up for “204 24V Input” terminal 223 will be
controlled by the input on terminal 204.

HMI Bypass Controller Installation and Commissioning Guide 13
There is one (1) form C relay output.
Terminal No. Description
71 0V Damper Control Contact Common
74 Damper Control Contact (NO)
2.5.4.4 Digital Output
There is one (1) digital output. (24 Vdc).
Terminal No. Description
202 Auto Mode Selected
2.5.4.5 Additional HVAC H300 VFD Connections
Additional analog inputs and outputs are available by making connections
directly to the HVAC H300 VFD. The following connections are located on the
VFD and not the customer connection terminal block.
VFD Terminal No. Description
4 0V Common Analog Input
6 Analog PID Feedback
VFD Terminal No. Description
7 Speed/Frequency Output
8 Analog Torque Output
9 0V Common Analog Output
For further information see HVAC Drive H300 User Guide.
2.5.4.6 Additional SI-I/O Connections
Additional Analog I/O and Digital I/O can be made by making connections
directly to the SI-I/O module mounted in slot 3 of the HVAC Drive H300. The
following connections are not found on the customer connection terminal
block.
SI-I/O Terminal No. Description
205 Digital Input/Output 4
206 0V Common SI-I/O
209 Analog Input 3/Digital Input 7
210 0V Common SI-I/O
211 Analog Output 1/Digital Input 8

14 HMI Bypass Controller Installation and Commissioning Guide
2.5.5 Grounding
Never ground the HMI bypass package in common with welding machines,
motors or other high current electrical equipment. Run all ground wires in a
separate conduit.
When using several electronic bypass packages side by side, ground as shown
below.
(a) Acceptable (b) Acceptable (c) Not Acceptable
2.5.6 Customer Connection Terminals
All control circuit connections are made through the Customer Connection
terminal block. There are connections between the Customer Terminal block,
the HVAC Drive H300, and the SI-I/O module. These connections are made at
the factory and are for reference only. DO NOT change this wiring as it will
cause the HMI bypass to operate improperly or not at all.
See following page for Customer Connection Terminal diagram.
2.5.6.1 Emergency Bypass Operation
In situations requiring Emergency Bypass operation (i.e. drive removal or +24
Vdc supply failure) bypass contactor can be engaged to run the motor across
the line by moving Jumper (41-100) to (44-EB). Note the thermal overload
protection is protecting the motor.
x
√ √

HMI Bypass Controller Installation and Commissioning Guide 15
2.5.7 Customer Connection Diagram
NOTE: For Emergency Bypass
Operation (i.e. drive removal
or +24 Vdc supply failure) bypass
contactor can be engaged to run
the motor across the line by
moving Jumper (41-100) to (44-
EB). Note the thermal overload
protection is protecting the motor.

16 HMI Bypass Controller Installation and Commissioning Guide
2.5.8 HVAC Drive H300 HMI Bypass Schematic

HMI Bypass Controller Installation and Commissioning Guide 17

18 HMI Bypass Controller Installation and Commissioning Guide
2.6 Inspection
Once all wiring is complete, verify that:
1. All wiring is installed.
2. Excess screws, metal filings and wire clippings are removed from inside the
unit(s).
3. Screws and fasteners are securely tightened.
4. Exposed wiring has no contact with other wiring or terminals.
Section 3 – Overview of the HMI bypass
All start/stop, safety, fire alarm inputs and VFD analog output are routed to the
inputs of the VFD and IO module via customer terminal connections.
The analog input is factory set to accept a 4–20 mA speed reference signal.
All control wiring must be run in a separate conduit from ANY high voltage or
power wiring. The wiring should also be properly grounded and shielded when
necessary to ensure proper operation.
3.1 HMI Bypass Touchscreen Functions
3.1.1 Splash Screen
Upon initial power-up or any power cycle the LCD touchscreen HMI will
reset to the splash screen. If the HMI Bypass has been setup, operation will
continue in the same state as it was before shutdown/power loss.
4.1.1 Splash Screen
CONTINUE: Navigate to the main control screen.
SETUP WIZARD: Begins the bypass configuration process. Users must enter the
security pin number before changing system settings. See section 4.1 for HMI
bypass commissioning using the setup wizard.

HMI Bypass Controller Installation and Commissioning Guide 19
3.1.2 Main Control Screen
From the main screen, users can control the state of the bypass system and
navigate to system configuration (settings) and status menus.
HAND: Pressing this icon will put the bypass system in Hand Mode. In VFD and
Hand Mode, the system will run at a manually selected frequency and the
bypass contactor will automatically close if BYP (Bypass Mode) is selected and
the VFD output is off.
AUTO: Pressing this icon puts the bypass system in Auto Mode. In Auto Mode,
the system will require the “Auto Run Input” on terminal 27 to be active in
order to run the motor. If VFD Mode is also selected, the system will follow
the analog speed reference on terminal 5 (4-20 mA). If BYP is selected, the
system will run at line frequency, but still requires the “Auto Run Input”
(terminal 27).
STOP: This button will stop the motor and also acts as a reset.
Note: If a Remote Bypass, Remote VFD, or Fireman’s Override command is
present on the digital inputs, the STOP icon will not stop the motor.
VFD: Puts the system in VFD Mode. The output contactor is closed and the
motor is powered by the VFD.
BYP: Puts the system in Bypass Mode. The bypass contactor will close and the
motor will rotate at line frequency.
Note: If you are in Hand|Auto “VFD” Mode and want to switch To Bypass
“BYP” Mode, serlect Bypass Mode “BYP” and then reselect HAND or AUTO.

20 HMI Bypass Controller Installation and Commissioning Guide
3.1.3 Drive Status and System Diagnostics
3.1.3.1 General Status
The drive status screen displays basic VFD information.
Motor RPM: Displays the estimated speed of the motor.
Current Magnitude: The instantaneous drive output current scaled so that it
represents the r.m.s. phase current in Amps under steady-state conditions.
Output Power: Displays the current power output of the VFD.
Output Frequency: Displays the frequency applied to the motor.
Drive Thermal Accumulator: Displays the percentage of the thermal trip level
of the drive.
Motor Thermal Accumulator: Displays the level of the motor overload
accumulator.
Software Version: Displays the current software version of the LCD
touchscreen HMI program.
More: Navigates to an additional Drive Status page.
Trip Log: Navigates to the system fault log.
View Trends: Displays the Graphical Trend Viewer for Motor RPM, Motor Load
%, and Motor Thermal Overload %.
I/O Status: Shows the current status of all digital inputs, outputs and relays.