LonWorks Option Board User Manual
MN04003008E
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www.eatonelectrical.com
6-3
April 2004
Input Network Variables
Table 6-1: Input Network Variables
nviRequest
This input network variable provides the mechanism to request a particular mode for the
Node object or the Adjustable Frequency Motor Drive object within a node. Supported
requests are RQ_NORMAL, RQ_UPDATE_STATUS, RQ_CLEAR_STATUS, RQ_REPORT_MASK,
RQ_DISABLED, RQ_ENABLE and RQ_CLEAR_ALARM.
nviDrvSpeedStpt
This input network variable provides control and a low resolution speed setpoint.
Table 6-2: Speed Setpoint Variable Parameters
nviDrvSpeedScale
This input network variable provides scaling for nviDrvSpeedStpt. Negative values indicate a
motor direction in reverse. For example, if the nviDrvSpeedStpt value is 50% and
nviDrvSpeedScale -150%, then the actual speed setpoint is -75%, or 0.75 times the nominal
speed in reverse direction. The valid range is -163,840% to 163,830. The value 0x7FFF
(+163,835%) will be handled as an invalid value. Default value is determined by
nciDrvSpeedScale. This value will be adopted at power-up and in case of not receiving an
update within the specified Receive Heartbeat time.
Function
Variable Name
SNVT Type
Min. Value
Max. Value
Node Object request
nviRequest
SNVT_obj_request
—
—
Driver speed setpoint
nviDrvSpeedStpt
SNVT_switch
n/a
n/a
Driver setpoint speed
scaling
nviDrvSpeedScale
SNVT_lev_percent
-163.840%
163.830%
Reset fault
nviRstFault
SNVT_switch
n/a
n/a
Clear kWh trip or Drive
total running hours trip
counters
nviClrCntr
SNVT_switch
1
2
Process In Data
nviProcessIn1-8
SNVT_lev_percent
0
65535
Digital Inputs
nviDigitalIn1-8
SNVT_switch
0
4
Parameter Set
nviParCmd
SNVT_preset
n/a
n/a
State
Value
Command
0
NA
Stop
1
0
0%
1
1 to 200
0.5 to 100%
1
201 to 255
100.0%
0xFF
NA
Auto
