Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 29)

4-2 Description of Features
1503-UM054C-EN-P – June 2013
TDUV Programmability With the IntelliVAC Plus unit TDUV settings will be altered via a
parameter which has the following range/resolution:
0.2 Sec to Maximum 2.000 Sec. with 1 mSec. resolution
Therefore for a 400A contactor this would be from 0.2 sec to 2.000
sec and for an 800A contactor this would be from 0.2 sec to 2.000
sec.
The default value of the TDUV time will be dependant on the TDUV
settings from the Basic module, in the following manner. If the
TDUV Configuration is set to disabled (see TDUV Configuration
Table 8.D) then the TDUV time will be set to 0.2 Sec. If the TDUV
Configuration is set to enabled (see TDUV Configuration Table 8.D)
then the TDUV time will be set to the time from the TDUV Hold-up
Time sent from the IB DIP switches (0.200, 0.500, 1.000 or 2.000
Sec). This will only occur for the first time, after power up, that the
TDUV Configuration bit and TDUV Hold-up Time is read from the
Basic module. From then on, the source of the TDUV Hold-up Time
will be determined from a parameter that indicates if the source of
the TDUV Hold-up Time is derived from the Base module DIP
switch or from a DeviceNet setting. The parameter which is used to
determine the source of the TDUV Hold-up Time will be set on
DeviceNet in the following manner:

‘TDUV Hold-up Time Source = ‘‘IB’ or ‘DeviceNet’
This parameter will affect all five of the IB units in an MC system
This scheme will allow having a TDUV time value from the IB and
IE units, with both values being visible and a third parameter which
indicates which of the two parameters will be used for control of the
contactor.
The TDUV data will be available, for each of the five (5) IB units,
on DeviceNet in the following manner:

‘IB1 TDUV time = ‘‘0.2 Sec’ to ‘2.000 Sec’ (resolution is 1mS)

‘IB2 TDUV time = ‘‘0.2 Sec’ to ‘2.000 Sec’ (resolution is 1mS)

‘IB3 TDUV time = ‘‘0.2 Sec’ to ‘2.000 Sec’ (resolution is 1mS)

‘IB4 TDUV time = ‘‘0.2 Sec’ to ‘2.000 Sec’ (resolution is 1mS)

‘IB5 TDUV time = ‘‘0.2 Sec’ to ‘2.000 Sec’ (resolution is 1mS)
Default value is 0.2 Sec.
The TDUV Hold-up Time values transferred from the IB units will
be available on DeviceNet in the following manner: