Honeywell LonWorks, Инструкция по установке и эксплуатации

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Honeywell
• 18 LonWorks interface
6.3 Input Network Variables
nviRequest
This input network variable provides the mechanism to request a particular mode for the Node
object or the Variable Speed 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.
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 nviDrvSpeed-
Scale -150%, then the actual speed setpoint is -75%, or 0.75 times the nominal speed in re-
verse 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 set point 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
Table 8.
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
Table 9.