Lenze AC Tech LonWorks MCH Series Use and care manual

MCH Series Drives
LonWorks Communications Guide

This documentation applies to the use of an MCH Series Variable Frequency Drive with LonWorks protocol and
should be used in conjunction with the MCH Series Installation and Operation Manual (Document MH01) that
shipped with the drive. These documents should be read in their entirety as they contain important technical data
and describe the installation and operation of the drive.
LON®, LonTalk® and LonWorks® are registered trademarks of the Echelon Corporation, San Jose CA 95126,
http://www.echelon.com; [email protected].
Anybus® and ABS-S® are registered trademarks of HMS Industrial Networks AB, Sweden, USA, Germany and
other countries, http://www.anybus.com.
Modbus ™ is a registered trademark of Schneider Electric, founder of Modbus-IDA, http://www.modbus-IDA.org.
© 2003 AC Technology Corporation
No part of this documentation may be copied or made available to third parties without the explicit written approval
of AC Technology Corporation. All information given in this documentation has been carefully selected and tested
for compliance with the hardware and software described. Nevertheless, discrepancies cannot be ruled out. AC
Tech does not accept any responsibility nor liability for damages that may occur. Any necessary corrections will be
implemented in subsequent editions.
About These Instructions

i RG-MHLON
Contents
1 Safety Information.............................................................................................................1
1.1 Warnings, Cautions and Notes ..............................................................................1
1.1.1 General ....................................................................................................1
1.1.2 Application ...............................................................................................1
1.1.3 Installation ...............................................................................................1
1.1.4 Electrical Connection................................................................................2
1.1.5 Operation .................................................................................................2
2 Introduction.......................................................................................................................3
2.1 Hardware Description ...........................................................................................3
2.2 LED Status Indicators............................................................................................4
2.3 Serial Communications Wiring ..............................................................................5
3 Drive Setup and Programming...........................................................................................6
3.1 Added Programming Parameters ..........................................................................6
3.2 Bus Configuration Parameters...............................................................................7
3.3 Omitted Parameters and Selections ......................................................................9
3.4 Modified Parameters and Selections .....................................................................9
3.5 Serial Communication Setup.................................................................................10
4 MCH LonWorks® Network Variables .................................................................................12
4.1 LonWorks® Network Variable Map.......................................................................12
4.2 Supported Input Network Variables .......................................................................13
4.3 Supported Output Network Variables.....................................................................15
4.4 Supported Configuration Network Variables ..........................................................19
4.5 LonWorks XIF Files ...............................................................................................23

1 RG-MHLON
Safety Information
1 Safety Information
1.1 Warnings, Cautions and Notes
1.1.1 General
Some parts of Lenze controllers (frequency inverters, servo inverters, DC controllers) can be live, moving
and rotating. Some surfaces can be hot.
Non-authorized removal of the required cover, inappropriate use, and incorrect installation or operation
creates the risk of severe injury to personnel or damage to equipment.
All operations concerning transport, installation, and commissioning as well as maintenance must be
carried out by qualified, skilled personnel (IEC 364 and CENELEC HD 384 or DIN VDE 0100 and IEC report
664 or DIN VDE0110 and national regulations for the prevention of accidents must be observed).
According to this basic safety information, qualified skilled personnel are persons who are familiar with
the installation, assembly, commissioning, and operation of the product and who have the qualifications
necessary for their occupation.
1.1.2 Application
Drive controllers are components designed for installation in electrical systems or machinery. They are
not to be used as appliances. They are intended exclusively for professional and commercial purposes
according to EN 61000-3-2. The documentation includes information on compliance with EN 61000-3-2.
When installing the drive controllers in machines, commissioning (i.e. the starting of operation as directed)
is prohibited until it is proven that the machine complies with the regulations of the EC Directive 98/37/EC
(Machinery Directive); EN 60204 must be observed.
Commissioning (i.e. starting drive as directed) is only allowed when there is compliance to the EMC Directive
(89/336/EEC).
The drive controllers meet the requirements of the Low Voltage Directive 73/23/EEC. The harmonised
standards of the series EN 50178/DIN VDE 0160 apply to the controllers.
The availability of controllers is restricted according to EN 61800-3. These products can cause
radio interference in residential areas. In the case of radio interference, special measures may be
necessary for drive controllers.
1.1.3 Installation
Ensure proper handling and avoid excessive mechanical stress. Do not bend any components and do not
change any insulation distances during transport or handling. Do not touch any electronic components
and contacts. Controllers contain electrostatically sensitive components, which can easily be damaged by
inappropriate handling. Do not damage or destroy any electrical components since this might endanger
your health! When installing the drive ensure optimal airflow by observing all clearance distances in the
drive's user manual. Do not expose the drive to excessive: vibration, temperature, humidity, sunlight, dust,
pollutants, corrosive chemicals or other hazardous environments.

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Safety Information
1.1.4 Electrical Connection
When working on live drive controllers, applicable national regulations for the prevention of accidents (e.g.
VBG 4) must be observed.
The electrical installation must be carried out in accordance with the appropriate regulations (e.g.
cable cross-sections, fuses, PE connection). Additional information can be obtained from the regulatory
documentation.
The regulatory documentation contains information about installation in compliance with EMC (shielding,
grounding, filters and cables). These notes must also be observed for CE-marked controllers.
The manufacturer of the system or machine is responsible for compliance with the required limit values
demanded by EMC legislation.
1.1.5 Operation
Systems including controllers must be equipped with additional monitoring and protection devices according
to the corresponding standards (e.g. technical equipment, regulations for prevention of accidents, etc.).
You are allowed to adapt the controller to your application as described in the documentation.
DANGER!
• After the controller has been disconnected from the supply voltage, do not touch the live
components and power connection until the capacitors have discharged. Please observe the
corresponding notes on the controller.
• Do not continuously cycle input power to the controller more than once every three minutes.
• Close all protective covers and doors during operation.
WARNING!
Network control permits automatic starting and stopping of the inverter drive. The system design
must incorporate adequate protection to prevent personnel from accessing moving equipment
while power is applied to the drive system.
Table 1: Pictographs used in these instructions
Pictograph Signal word Meaning Consequences if ignored
DANGER! Warning of Hazardous Electrical
Voltage.
Reference to an imminent danger that may
result in death or serious personal injury if the
corresponding measures are not taken.
WARNING! Impending or possible danger
for persons
Death or injury
STOP! Possible damage to equipment Damage to drive system or its surroundings
NOTE Useful tip: If observed, it will
make using the drive easier

3 RG-MHLON
Introduction
2 Introduction
This document explains how to connect an MCH Drive to a LonWorks® network. It is intended as a serial
communications supplement only and will not discuss normal drive operations. For more information
regarding normal drive setup and functionality, refer to the MCH Installation and Operation Manual (MH01).
LonWorks® technology is a complete platform for implementing control network systems. These networks
consist of intelligent control devices or nodes that interact with their environment and communicate with
each other using a common, message based protocol (LonTalk®). A LonWorks® network can consist of
up to 32,385 nodes divided into 255 subnets (127 nodes/subnet).
2.1 Hardware Description
To connect to a LonWorks® network, the MCH Drive utilizes an Anybus-S® Drive Profile Embedded
Interface Card that supports Version 1.1 of the LonMark® 6010 Functional Profile for Variable Speed Motor
Drives. This Anybus-S LonWorks (ABS-LON®) module is located inside of the bypass or option box that is
attached to the MCH Drive.
The ABS-LON® module communicates according to the LonTalk® protocol. This means that it can
communicate with all LonWorks® nodes that comply with this protocol, but it does not necessarily mean
that all services available in the LonTalk® protocol are supported.
The ABS-LON® module uses the FTT-10A (Free Topology Twisted Pair) transceiver from Echelon Corporation.
This is the most commonly used twisted-pair media in building automation and this architecture supports
star, bus and loop wiring. The FTT-10A transceiver connects to a twisted pair cable with a baud rate of 78
kbit/s. The FTT-10A transceiver appears as a high impedance to the network when unpowered, and does
not interfere with network communications when powered down.
Figure 1 identifies the components of the communications module intended for user interaction.
Watchdog LED
LED Status Indicators
Service Pin Pushbutton
Socket for LonWorks
Bus Connector
1
4
2
3
Figure 1: MCH LonWorks® Comm Module

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Drive Setup & Programming
2.2 LED Status Indicators
LED 1 - Drive Communication
This LED indicates the communication status between the comm module and the drive.
LED State Indicates:
Steady Green Link OK
Steady Red Link lost, permanent
Flashing Red Link lost, temporary
LED 2 - Service
This LED indicates the node configuration and application status.
LED State Indicates:
Steady OFF Node configured and installed in network
Steady Green Node not configured, has no application; Error detected by Neuron Self Test routine
Flashing Green Node not configured and not installed in network but node has an application
LED 3 - Wink
This LED indicates receipt of a wink command.
LED State Indicates:
Flashing Red Wink command received on LonWorks®network
Steady OFF Normal state
LED 4 - Network Status
This LED indicates the communication status between the module and the LonWorks® network.
LED State Indicates:
Steady OFF No power
Flashing Red Receive heartbeat timeout occurred; Fieldbus communication loss indicated to host: RX_FAIL
Steady Green Module and network are communicating correctly
Watchdog LED (WD)
This LED indicates module, drive and software status.
LED State Indicates:
Flashing Green 1Hz Module initialized and running properly
Flashing Green 2Hz Module not initialized
Flashing Red 1Hz Hardware check fault
Flashing Red 4Hz Drive initialization failed
Steady Orange Software download enabled

5 RG-MHLON
Drive Setup & Programming
2.3 Serial Communications Wiring
Figure 2 illustrates one method of wiring the MCH Series LonWorks® Bus Connector with an optional
switch to provide remote operation of the service pin.
Optional Switch MCH LonWorks Bus Connector
1
2
3
4
5
Shield
Ground
Remote Service Pin
Net A
Net B
(For remote
operation of
service pin)
Figure 2: Wiring the MCH LonWorks® Bus Connector
Net A, Net B This is the 2-wire LonWorks bus designed according to the LonMark® design guidelines.
The bus is of non-polarization character and supports line-powered networks.
Service Pin This pin is used for the (optional) remote functionality of the Service Pin pushbutton. Refer
to Figure 2 for an illustration on how to wire this.
Ground This pin is used for the remote Service Pin functionality. Refer to Figure 2.
Shield This pin should be connected to the shield of the LonWorks cable, in cases where such
cable is to be used. The pin is connected to the Ground terminal (2) on the communications
module through an RC-filter.

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Drive Setup & Programming
3 Drive Setup and Programming
Most drive parameters (including those required for serial communications) are not accessible through the
LonWorks® interface. They can only be accessed by entering the Programming Mode of the drive itself.
Refer to the MCH Installation and Operation Manual (MH01) for more information. The parameter information
in manual MH01 is based on the standard MCH Series Modbus™ Drive. The differences between the drive
programming parameters described in the manual and those that exist in the MCH Series LonWorks®
Drive are explained in sections 3.1-3.4 herein.
3.1 Added Programming Parameters
60 SERIAL TIMEOUT This parameter makes the serial watchdog timeout period selectable.
(Section 3.5)
86 MOTOR RATED SPEED This parameter allows the user to enter the nominal speed of the motor
in RPM. This value is required for LON parameter nvoSpeedActRpm to
function properly. This parameter has a minimum value of 1 RPM and a
maximum value of 65000 RPM. The default is 1800 RPM.
89 MOTOR RATED FREQUENCY This parameter allows the user to enter the nominal frequency of the
motor in Hz. This value is required for many LON parameters (including
nviDrvSpeedStpt and nvoDrvSpeed) to function properly. This parameter
has a minimum value of 0.00 Hz and a maximum value of 650.00 Hz. The
default is 60.00 Hz.
125 APP REVISION This parameter allows the user to view the version of the application
software installed in the ABS_LON module. This parameter is used for
troubleshooting and to establish compatibility between the drive software
and the ABS_LON module. If this parameter is displaying a value of 0104
or 9999, contact AC Tech.
126 CPI REVISION This parameter allows the user to view the version of the common profile
interface software installed in the ABS_LON module. This parameter is
used for troubleshooting and to establish compatibility between the drive
software and the ABS_LON module. If this parameter is displaying a value
of 0124 or 9999, contact AC Tech.
127 CFG REVISION This parameter allows the user to view the version of the AC Tech
configuration software installed in the ABS_LON module. This parameter
is used for troubleshooting and to establish compatibility between the
drive software and the ABS_LON module. If this parameter is displaying a
value of 0001 or 9999, contact AC Tech.

7 RG-MHLON
Drive Setup & Programming
3.2 Bus Configuration Parameters
The Bus configuration parameters are only used to provide additional information about the installation
state of the drive. As the address information usually is assigned from the network side in a LonWorks
network, in the programming mode of the drive, these parameters are read-only.
100 NODE STATE This parameter contains the current state of the network interface. Configured
Online is the normal run-time mode and means that the drive is commissioned
and online. Soft/Bypass/Hard Offline means the node is not participating actively
on the network.
Value Node State
0Unknown State
1Unconfigured
2Applicationless
3Configured Online
4Configured Offline
5Soft Offline
6Configured Bypass Offline
7Hard Offline, Bypass Offline
101 NEURON ID [5] Byte 6 of the unique Neuron ID (MSB)
102 NEURON ID [4] Byte 5 of the unique Neuron ID
103 NEURON ID [3] Byte 4 of the unique Neuron ID
104 NEURON ID [2] Byte 3 of the unique Neuron ID
105 NEURON ID [1] Byte 2 of the unique Neuron ID
106 NEURON ID [0] Byte 1 of the unique Neuron ID (LSB)
107 NODE ADDRESS 1 Indicates the ID of the node within this subnet. A value of 0 means that it is not
assigned.
108 NODE SUBNET 1 Indicates to which subnet this node belongs. A value of 0 means that it is not
assigned.

RG-MHLON 8
Drive Setup & Programming
Each domain in a LonWorks network has a unique ID of 0, 1, 3 or 6 bytes in length. If the ID is shorter than
6 bytes, it is left justified in the following parameters (109-114).
109 DOMAIN ID 1 [5] Byte 6 of the domain ID (MSB)
110 DOMAIN ID 1 [4] Byte 5 of the domain ID
111 DOMAIN ID 1 [3 Byte 4 of the domain ID
112 DOMAIN ID 1 [2] Byte 3 of the domain ID
113 DOMAIN ID 1 [1] Byte 2 of the domain ID
114 DOMAIN ID 1 [0] Byte 1 of the domain ID (LSB)
115 NODE ADDRESS 2 Indicates the ID of the node within this subnet. A value of 0 means that it is not
assigned.
116 NODE SUBNET 2 Indicates to which subnet this node belongs. A value of 0 means that it is not
assigned.
Each domain in a LonWorks network has a unique ID of 0,1,3 or 6 bytes in length. If the ID is shorter than
6 bytes, it is left justified in the following parameters (117-122).
117 DOMAIN ID 2 [5] Byte 6 of the domain ID (MSB)
118 DOMAIN ID 2 [4] Byte 5 of the domain ID
119 DOMAIN ID 2 [3] Byte 4 of the domain ID
120 DOMAIN ID 2 [2] Byte 3 of the domain ID
121 DOMAIN ID 2 [1] Byte 2 of the domain ID
122 DOMAIN ID 2 [0] Byte 1 of the domain ID (LSB)
123 XMIT ERRORS The number of CRC errors detected during packet reception. These may be due
to collisions or noise on the transceiver input.
124 TRANS TIMEOUTS The number of times that the node failed to receive expected acknowledgements
or responses after retrying the configured number of times. These may be due
to destination nodes being inaccessible on the network, transmission failures
because of noise on the channel, or if any destination node has insufficient
buffers or receive transaction records.

9 RG-MHLON
Drive Setup & Programming
3.3 Omitted Parameters and Selections
36 SLEEP THRESHOLD Sleep Mode functionality has not been added to the MCH Series LonWorks®
drive so these drive parameters do not exist.
37 SLEEP DELAY
38 SLEEP BANDWIDTH
41 ANALOG INPUT FILTER
52 TB14 OUT The following options have not been added to these parameters in the MCH
Series LonWorks® drive:
53 TB15 OUT
54 RELAY INV MIN/MAX A
MIN ALARM
INV MIN ALARM
MAX ALARM
INV MAX ALARM
58 SERIAL ADDRESS The ABS_LON module only communicates with one MCH Drive so there is
no need for the drive to have a unique serial address and this parameter has
been removed.
3.4 Modified Parameters and Selections
8 ACCEL This parameter defines the time that it will take for the drive to ramp the motor up
from 0.00Hz to Drive Parameter #11 (Max Frequency).
9 DECEL This parameter defines the time that it will take for the drive to ramp the motor down
from Drive Parameter #11 (Max Frequency) to 0.00Hz.
24 AUTO SOURCE The default selection for this parameter is KEYPAD. This setting is required if the
drive speed is to be modified over the LonWorks® network.
32 HZ MULTIPLIER The default setting for this parameter is 30.00.
56 SERIAL LOSS The selections for this parameter are FAULT (default) and PRESET#3. The functionality
of this parameter is described in Section 3.5 Serial Communications Setup.

RG-MHLON 10
Drive Setup & Programming
3.5 Serial Communication Setup
The factory default values of the drive parameters have been set to allow immediate serial communications
(without serial stop/start and serial speed commands). For serial speed and/or serial start/stop control,
modify the setting of Drive Parameter #30 (Control). The drive parameters that are required for serial
communications, including Drive Parameter #30, are described herein.
24 AUTO SOURCE This parameter must be set to KEYPAD for the drive speed or setpoint to be modified
over the network.
30 CONTROL This parameter should be set to accommodate the specific application intent:
NORMAL Serial start/stop and serial speed commands are invalid.
NORM NO HAND Same as NORMAL except the HAND/OFF/AUTO, herein referred to
as H/O/A, is limited to settings of OFF and AUTO.
SERIAL SPEED Serial start commands are invalid. Serial speed commands are
valid in AUTO.
S SPD/NO HAND Same as SERIAL SPEED except H/O/A is limited to settings of OFF
and AUTO.
SERIAL AUTO Serial start/stop and serial speed commands are valid in AUTO.
This setting forces the drive to be started via the serial link when
in AUTO.
S AUTO/NO HND Same as SERIAL AUTO except H/O/A is limited to settings of OFF
and AUTO.
The STOP command issued when LonWorks (LON) parameter nviEmrgOvrd is set to EMERG_SHUTDOWN
is accepted regardless of the H/O/A switch position.

11 RG-MHLON
Drive Setup & Programming
56 SERIAL LOSS This parameter sets the action to be taken in the event that the LON has modified
the speed command or started the drive and a serial watchdog timeout occurs. The
options for this parameter are FAULT (default) and PRESET#3.
If FAULT is selected and the drive is running when a serial watchdog timeout occurs
the drive will trip into a SERIAL FAULT stopping the drive and taking it out of serial
control. A fault reset command (issued via LON parameter nviResetFault), a keypad
stop or a terminal stop is required to clear the fault.
If PRESET#3 is selected and a timeout occurs the drive will continue to run at the
speed defined in Drive Parameter #3 (PRESET #3). If the drive is stopped (KSTOP,
RSTOP, SSTOP or FAULT) or a valid speed command is received from the LON, the
drive will return to its normal speed reference.
When Drive Parameter #30 (CONTROL) is set to SERIAL SPEED, the speed reference
MUST be the drive keypad (-KEY or -MKB) for the serial loss action to take effect.
When CONTROL is set to SERIAL AUTO the serial loss action will take effect with any
speed reference.
This parameter also defines the action to be taken in the event that the drive is
placed OFFLINE or a Receive Heartbeat timeout (RX_FAIL) occurs.
57 SERIAL This parameter needs to be set to either WITH TIMER (default) or W/O TIMER for the
drive to communicate through the serial link. Serial communications will not work if
this parameter is set to DISABLED.
60 SERIAL TIMEOUT This parameter makes the serial watchdog timeout period selectable. It has a
minimum value of 10 seconds and maximum value of 255 seconds. The default is
30 seconds. If no action is to be taken when a serial watchdog timeout occurs, Drive
Parameter #57 (Serial) should be set to W/O TIMER. This will disable the watchdog
timer. Otherwise Drive Parameter #57 (Serial) should be set to WITH TIMER. The
action to be taken when a timeout occurs is then determined by Drive Parameter
#56 (Serial Loss).
NOTE: Receive heartbeat timeouts and OFFLINE occurrences are not affected by the
setting of Parameter 60.

RG-MHLON 12
LonWorks Network Variables
4 MCH LonWorks® Network Variables
The MCH LonWorks® Network Variables (nv) are divided into three types: input, output and configuration.
Sections 4.2 - 4.5 describe each of these variable types and the individual supported variables within each.
4.1 LonWorks® Network Variable Map
Figure 3 is a visual map of the supported LonWorks® network variables for the MCH Series drive.
Variable Speed Motor Drive: 6010
Mandatory
Network
Variables
Optional
Network
Variables
Manufacturer-Defined
Network
Variables
Manufacturer-Defined Configuration Properties
ncMFR1 - nciStopMode (UCPT)
ncMFR2 - nciStopLevel (UCPT)
ncMFR3 - nciPIDGain (UCPT) (Not supported)
ncMFR4 - nciPIDIntTime (UCPT) (Not supported)
ncMFR5 - nciPidDerTime (UCPT) (Not supported)
ncMFR6 - nciParValue (UCPT)
ncMFR7 - nciParRead (UCPT)
ncMFR8 - nciParWrite (UCPT)
Configuration Properties
nc17 - nciLocation
nc50 - nciMaxSpeed (mandatory)
nc53 - nciMinSpeed (mandatory)
nc48 - nciRcvHrtBt
nc49 - nciSndHrtBt (mandatory)
nc52 - nciMinOutTm
nc158 - nciNmlSpeed (mandatory)
nc159 - nciNmlFreq (mandatory)
nc160 - nciRampUpTm (mandatory)
nc161 - nciRampDownTm (mandatory)
nc162 - nciDrvSpeedScale
nvoDrvSpeed
SNVT_lev_percent
nv4
nvoDrvCurnt
SNVT_amp
nv3
nvoDrvVolt
SNVT_volt
nv5
nvoDrvPwr (Not supported)
SNVT_power_kilo
nv6
nvoDrvRunHours
SNVT_time_hour
nv7
nviDrvSpeedStpt
SNVT_switch
nv2
nv1
nviDrvSpeedScale
SNVT_lev_percent
nviResetFault
SNVT_switch
nv8
nviEmergOverride
SNVT_hvac_emerg
nv9
nviDigOutput1 (Not supported)
SNVT_switch
nv10
nviDigOutput2 (Not supported)
SNVT_switch
nv11
nviAnlgOutput (Not supported)
SNVT_lev_percent
nv12
nvoSpeedActRpm
SNVT_count_inc
nv12
nvoTorqueAct (Not supported)
SNVT lev percent
nv12
nvoDrvTemp (Not supported)
SNVT_temp_p
nv12
nvoFreqAct
SNVT_freq_hz
nv12
nvoDrvStatus
SNVT_count
nv12
nvoRunning
SNVT_switch
nv12
nvoFaulted
SNVT_switch
nv12
nvoPIDAct (Not supported)
SNVT_lev_percent
nv12
nvoEmergOvrStat
SNVT_hvac_emerg
nv12
nvoDigInput1 (Not supported)
SNVT_switch
nv12
nvoDigInput2 (Not supported)
SNVT_switch
nv12
nvoAnlgInput (Not supported)
SNVT_lev_percent
nv12
nvoParValue
SNVT_count
nv12
Figure 3: LonWorks® Network Variable Map for MCH Series Drives

13 RG-MHLON
LonWorks Network Variables
4.2 Supported Input Network Variables
NviObjRequest
Definition Network input SNVT_obj_request nviObjRequest;
Explanation This input is used to enable control commands and updates from the network. The
status of the node is reported in nvoObjStatus.
Valid range:
Object Request Function
RQ_UPDATE_STATUS Updates nvoObjStatus
RQ_CLEAR_STATUS Clears nvoObjStatus
RQ_CLEAR_ALARM Resets a drive fault
RQ_REPORT_MASK Reports supported requests in nvoObjStatus
RQ_NORMAL The normal request. Sets object to default state
RQ_DISABLE Stops the drive with the selected stop mode and disables
the operation and object
RQ_ENABLE Enables the drive for operation and enables the object
Commands not listed above will be reported as invalid_request in nvoObjStatus.
NviDrvSpeedStpt
Definition Network input SNVT_switch nviDrvSpeedStpt.
Explanation This input network variable provides a low-resolution speed setpoint. It may also
use the receive heartbeat function. The speed setpoint is the result of multiplication
of nviDrvSpeedStpt and nviDrvSpeedScl.
Valid Range:
State Valid Range
0 Stop the drive
1 Start the drive
-1 (0xff) Auto (Invalid)
Value (% Nominal) Internal Value
-100.0% to -0.5% -200 to -1
0.0% 0
0.5% to 100.0% 1 to 200
Default value The default value is AUTO (state = 0xFF). This value will be adopted at power-up.
This network variable input may use the Receive Heartbeat function if the Receive
Heartbeat function is setup for use. The actual value of drive speed also depends
on the setting of nviDrvSpdScl.

RG-MHLON 14
LonWorks Network Variables
NviDrvSpdScl
Definition Network input SNVT_lev_percent nviDrvSpeedScale
Explanation This input network variable provides scaling for nviDrvSpeedStpt (0.005%
resolution).
For example, if the value of nviDrvSpeedStpt is 100% and nviDrvSpdScl value
is 150%, then the actual speed setpoint value is 150% meaning that the drive
should run at 1.5 times nominal speed in the forward direction. A negative value
for nviDrvSpdScl sets the drive direction to reverse.
For example if nviDrvSpeedStpt value is 100% and nviDrvSpdScl value is -150%,
then actual speed setpoint value is -150%, meaning that he drive should run at
1.5 times nominal speed in the reverse direction.
Valid Range -163.840% to 0.00 % or 0.00% to +163.835%
The value 0x7FFF represents invalid data.
Default Value Defined by nciDrvSpdScl.
NviResetFault
Definition Network input SNVT_switch nviResetFault
Explanation This input network variable provides a mechanism to clear a fault status in the
drive.
Valid Range:
State Value Command
0 0.0% Reset Fault Ready
1 100.0% Reset Fault
On a transition from 0 to 1, this input network variable clears the fault condition in the drive.
Following a fault reset, this variable must be set back to 0 to enable the next fault
reset.
Default Value The drive will power-up in the ‘Reset Fault Ready’ state.

15 RG-MHLON
LonWorks Network Variables
NviEmrgOvrd
Definition Network input SNVT_hvac_emerg nviEmrgOvrd
Explanation HVAC Emergency Mode. This input network variable provides the ability to stop the
motor in case of an emergency.
Valid Range:
Setting Function
EMERG_NORMAL Not emergency mode, motor control enabled
EMERG_PRESSURIZE No functionality in this implementation
EMERG_DEPRESSURIZE No functionality in this implementation
EMERG_PURGE No functionality in this implementation
EMERG_SHUTDOWN Emergency shutdown mode. Stops motor
EMERG_FIRE No functionality in this implementation
EMERG_NUL Value not available
Default Value EMERG_NORMAL
4.3 Supported Output Network Variables
NvoObjStatus
Definition Network output SNVT_obj_status nvoObjStatus
Explanation This nvo reports the node object status.
Valid Range:
Bit Setting Function
Invalid_id Invalid node ID requested
report_mask Reporting supported fields
Disabled (20) RQ_DISABLED is active
electrical_fault (5) Same as the faulted bit in nvoDrvStatus
In_alarm Same as the alarm bit in nvoDrvStatus
NvoDrvSpeed
Definition Network output SNVT_lev_percent nvoDrvSpeed
Explanation This output network variable provides the speed of the drive as a percentage of the
nominal speed.
Valid Range -163.830% to 0.000 % or 0.000% to +163.830%.
The value 0x7FFF represents invalid data.
Default Value 0.000%.

RG-MHLON 16
LonWorks Network Variables
NvoDrvCurnt
NOTE: This parameter is not supported in drives with software version MC11101 or MC11102.
Definition Network output SNVT_amp nvoDrvCurnt
Explanation This output network variable provides the drive output current in Amps.
Valid Range 0.0 to 3276.7 A
Default Value 0.0 A
NvoDrvRunHours
NOTE: This parameter is not supported in drives with software version MC11101 or MC11102.
Definition Network output SNVT_time_hour nvoDrvRunHours
Explanation This output network variable provides total operation time of the motor in hours.
Valid Range 0 to 65535 hours
Default Value 0 hours
NvoDrvVolt
NOTE: This parameter is not supported in drives with software version MC11101 or MC11102.
Definition Network output SNVT_volt nvoDrvVolt
Explanation This output network variable provides the drive output voltage in Volts.
Valid Range 0 – 700 V
Default Value 0 V
NvoSpeedActRpm
Definition Network output SNVT_count_inc nvoSpeedActRpm
Explanation This output network variable provides the speed of the drive in RPM’s
Valid Range -32768 to 0 or 0 to 32767
Default Value 0 RPM

17 RG-MHLON
LonWorks Network Variables
NvoFreqAct
Definition Network output SNVT_freq_hz nvoFreqAct
Explanation This output network variable provides the speed of the drive in Hz.
Valid Range 0.0 - 120.00 Hz
Default Value 0.00 Hz
NvoDrvStatus
Definition Network output SNVT_state nvoDrvStatus
Explanation This output network variable provides the status of the drive.
Valid Range
Bit Name Description
0 FWD The drive is currently running the motor in forward motion
1 REV The drive is currently running the motor in reverse motion
2 NETCTRL The network is the active source for start/stop control
3 NETREF The network is the active source for the speed reference
4 RTSO Not used
5 FAULT The drive is currently faulted
6 ALARM Not used
7 REF The drive is running the motor at the speed defined by the
speed reference of the active control source (i.e. actual drive
speed = commanded drive speed)
8 FORN Not used
9 ZERO SPEED The drive is running at zero speed
10 LIMIT Not used
11 ACC The drive is currently ramping up to its commanded speed
12 DEC The drive is currently ramping down to its commanded speed
13-15 Not used Not used
Default Value 0